[PATCH v4 00/11] xfstests: test the nfs/cifs/btrfs/xfs reflink/dedupe ioctls

[PATCH v4 00/11] xfstests: test the nfs/cifs/btrfs/xfs reflink/dedupe ioctls

[Darrick J. Wong]

Hi all,

This is a small patch set against the reflink/dedupe test cases in
xfstests.  The first patch is a rewrite of the tools to find the
lowest vacant ID number and to move a test case.  These two programs
are useful for staging a lot of new tests at a high number and moving
them to lower numbers when the maintainer wants to accept the new
tests.

The second patch fixes some reflink tests that didn't clean up after
themselves.

Patch 3 updates the golden output for the test that examines the
results of feeding bad inputs to the two ioctls.  The new error values
are based on a discussion of how to react to bad file types on the
mailing lists and the ongoing work to hoist the ioctls to the VFS
level.

Patches 4-5 fix some minor errors found while testing with different
kernel config and block size options.

Patch 6 introduces new tests to check the behavior of unaligned CoW,
punch-while-CoWd, and ensures that passing len == 0 to reflink
actually runs to EOF.

Patch 7 introduces some XFS-specific ENOSPC testing, wherein we try to
crash the filesystem by allocating all the blocks in an AG and then
expanding the refcount and rmap btrees until the AG runs out of space.

Patch 8 introduces checks that CoW works with a variety of different
neighbor blocks -- delalloc, unwritten, hole, and regular.

Patch 9 introduces checks for CoW when blocksize < pagesize.

Patch 10 tries some large CoW operations to ensure that it works
correctly.

Patch 11 creates a 'dedupe' group for testing specifically dedupe
functionality.

If you're going to start using this mess, you probably ought to just
pull from my github trees for kernel[1], xfsprogs[2], xfstests[3],
xfs-docs[4], and man-pages[5].  They should just work with the btrfs
that's in 4.4...  and somewhat buggily with the 4.4 XFS patched with
[1].  The relevant xfs_io support will be in xfsprogs 4.3 though it
still needs a patch to fix len == 0 support.  Probably easier just to
grab [2] and build that.

Comments and questions are, as always, welcome.

--D

[1] https://github.com/djwong/linux/tree/for-dave
[2] https://github.com/djwong/xfsprogs/tree/for-dave
[3] https://github.com/djwong/xfstests/tree/for-dave
[4] https://github.com/djwong/xfs-documentation/tree/for-dave
[5] https://github.com/djwong/man-pages/commits/for-mtk

[PATCH v4 00/11] xfstests: test the nfs/cifs/btrfs/xfs reflink/dedupe ioctls

[Darrick J. Wong]

Hi all,

This is a small patch set against the reflink/dedupe test cases in
xfstests.  The first patch is a rewrite of the tools to find the
lowest vacant ID number and to move a test case.  These two programs
are useful for staging a lot of new tests at a high number and moving
them to lower numbers when the maintainer wants to accept the new
tests.

The second patch fixes some reflink tests that didn't clean up after
themselves.

Patch 3 updates the golden output for the test that examines the
results of feeding bad inputs to the two ioctls.  The new error values
are based on a discussion of how to react to bad file types on the
mailing lists and the ongoing work to hoist the ioctls to the VFS
level.

Patches 4-5 fix some minor errors found while testing with different
kernel config and block size options.

Patch 6 introduces new tests to check the behavior of unaligned CoW,
punch-while-CoWd, and ensures that passing len == 0 to reflink
actually runs to EOF.

Patch 7 introduces some XFS-specific ENOSPC testing, wherein we try to
crash the filesystem by allocating all the blocks in an AG and then
expanding the refcount and rmap btrees until the AG runs out of space.

Patch 8 introduces checks that CoW works with a variety of different
neighbor blocks -- delalloc, unwritten, hole, and regular.

Patch 9 introduces checks for CoW when blocksize < pagesize.

Patch 10 tries some large CoW operations to ensure that it works
correctly.

Patch 11 creates a 'dedupe' group for testing specifically dedupe
functionality.

If you're going to start using this mess, you probably ought to just
pull from my github trees for kernel[1], xfsprogs[2], xfstests[3],
xfs-docs[4], and man-pages[5].  They should just work with the btrfs
that's in 4.4...  and somewhat buggily with the 4.4 XFS patched with
[1].  The relevant xfs_io support will be in xfsprogs 4.3 though it
still needs a patch to fix len == 0 support.  Probably easier just to
grab [2] and build that.

Comments and questions are, as always, welcome.

--D

[1] https://github.com/djwong/linux/tree/for-dave
[2] https://github.com/djwong/xfsprogs/tree/for-dave
[3] https://github.com/djwong/xfstests/tree/for-dave
[4] https://github.com/djwong/xfs-documentation/tree/for-dave
[5] https://github.com/djwong/man-pages/commits/for-mtk

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[PATCH 01/11] test-scripts: test migration scripts

[Darrick J. Wong]

Add two scripts: "nextid" finds the next available test ID number in a
group, and "mvtest" relocates a test, fixes the golden output, and
moves the group entry for that test.

v2: sorting group files should preserve group order; nextid should use
the same algorithm as new; move both tools to tools/.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tools/mvtest     |   55 +++++++++++++++++++++++++++
 tools/nextid     |    1 
 tools/sort-group |  112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 168 insertions(+)
 create mode 100755 tools/mvtest
 create mode 120000 tools/nextid
 create mode 100755 tools/sort-group


diff --git a/tools/mvtest b/tools/mvtest
new file mode 100755
index 0000000..af601d6
--- /dev/null
+++ b/tools/mvtest
@@ -0,0 +1,55 @@
+#!/bin/sh
+
+# Renumber a test
+dir="$(dirname "$0")"
+
+if [ -z "$1" ] || [ "$1" = "--help" ]; then
+	echo "Usage: $0 path_to_test new_path_to_test"
+	exit 1
+fi
+
+src="$1"
+dest="$2"
+
+die() {
+	echo "$@"
+	exit 1
+}
+
+append() {
+	out="$1"
+	shift
+	echo "$@" >> "${out}"
+}
+
+test "${src}" != "${dest}" || die "Test \"${src}\" is the same as dest."
+test -e "tests/${src}" || die "Test \"${src}\" does not exist."
+test ! -e "tests/${dest}" || die "Test \"${src}\" already exists."
+
+sid="$(basename "${src}")"
+did="$(basename "${dest}")"
+
+sgroup="$(basename "$(dirname "tests/${src}")")"
+dgroup="$(basename "$(dirname "tests/${dest}")")"
+
+sgroupfile="tests/${sgroup}/group"
+dgroupfile="tests/${sgroup}/group"
+
+git mv "tests/${src}" "tests/${dest}"
+git mv "tests/${src}.out" "tests/${dest}.out"
+sed -e "s/^# FS QA Test No. ${sid}$/# FS QA Test No. ${did}/g" -i "tests/${dest}"
+sed -e "s/^QA output created by ${sid}$/QA output created by ${did}/g" -i "tests/${dest}.out"
+sed -e "s/test-${sid}/test-${did}/g" -i "tests/${dest}.out"
+
+grpline="$(grep "^${sid} " "${sgroupfile}")"
+newgrpline="$(echo "${grpline}" | sed -e "s/^${sid} /${did} /g")"
+
+sed -e "/^${sid}.*$/d" -i "${sgroupfile}"
+cp "${dgroupfile}" "${dgroupfile}.new"
+append "${dgroupfile}.new" "${newgrpline}"
+"${dir}/sort-group.py" "${dgroupfile}.new"
+mv "${dgroupfile}.new" "${dgroupfile}"
+
+echo "Moved \"${src}\" to \"${dest}\"."
+
+exit 0
diff --git a/tools/nextid b/tools/nextid
new file mode 120000
index 0000000..5c31d60
--- /dev/null
+++ b/tools/nextid
@@ -0,0 +1 @@
+sort-group
\ No newline at end of file
diff --git a/tools/sort-group b/tools/sort-group
new file mode 100755
index 0000000..84944ed
--- /dev/null
+++ b/tools/sort-group
@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+import sys
+
+# Sort a group list, carefully preserving comments.
+
+def xfstest_key(key):
+	'''Extract the numeric part of a test name if possible.'''
+	k = 0
+
+	assert type(key) == str
+
+	# No test number at all...
+	if not key[0].isdigit():
+		return key
+
+	# ...otherwise extract as much number as we can.
+	for digit in key:
+		if digit.isdigit():
+			k = k * 10 + int(digit)
+		else:
+			return k
+	return k
+
+def read_group(fd):
+	'''Read the group list, carefully attaching comments to the next test.'''
+	tests = {}
+	comments = None
+
+	for line in fd:
+		sline = line.strip()
+		tokens = sline.split()
+		if len(tokens) == 0 or tokens[0] == '#':
+			if comments == None:
+				comments = []
+			comments.append(sline)
+		else:
+			tests[tokens[0]] = (comments, tokens[1:])
+			comments = None
+	return tests
+
+def sort_keys(keys):
+	'''Separate keys into integer and non-integer tests.'''
+	int_keys = []
+	int_xkeys = []
+	str_keys = []
+
+	# Sort keys into integer(ish) tests and other
+	for key in keys:
+		xkey = xfstest_key(key)
+		if type(xkey) == int:
+			int_keys.append(key)
+			int_xkeys.append(xkey)
+		else:
+			str_keys.append(key)
+	return (int_keys, int_xkeys, str_keys)
+
+def write_sorted(tests, fd):
+	def dump_xkey(xkey):
+		(comments, tokens) = tests[key]
+		if comments:
+			for c in comments:
+				fd.write('%s\n' % c)
+		fd.write('%s %s\n' % (key, ' '.join(tokens)))
+	'''Print tests (and comments) in number order.'''
+
+	(int_keys, ignored, str_keys) = sort_keys(tests.keys())
+	for key in sorted(int_keys, key = xfstest_key):
+		dump_xkey(key)
+	for key in sorted(str_keys):
+		dump_xkey(key)
+
+def sort_main():
+	if '--help' in sys.argv[1:]:
+		print('Usage: %s groupfiles' % sys.argv[0])
+		sys.exit(0)
+
+	for arg in sys.argv[1:]:
+		with open(arg, 'r+') as fd:
+			x = read_group(fd)
+			fd.seek(0, 0)
+			write_sorted(x, fd)
+
+def nextid_main():
+	if '--help' in sys.argv[1:]:
+		print('Usage: %s group[/startid] ' % sys.argv[0])
+		sys.exit(0)
+
+	if len(sys.argv) != 2:
+		print('Specify exactly one group name.')
+		sys.exit(1)
+
+	c = sys.argv[1].split('/')
+	if len(c) > 1:
+		startid = int(c[1])
+	else:
+		startid = 1
+	group = c[0]
+
+	with open('tests/%s/group' % group, 'r') as fd:
+		x = read_group(fd)
+		xkeys = {int(x) for x in sort_keys(x.keys())[1]}
+
+		xid = startid
+		while xid in xkeys:
+			xid += 1
+		print('%s/%d' % (group, xid))
+
+if __name__ == '__main__':
+	if 'nextid' in sys.argv[0]:
+		nextid_main()
+	else:
+		sort_main()

[PATCH 01/11] test-scripts: test migration scripts

[Darrick J. Wong]

Add two scripts: "nextid" finds the next available test ID number in a
group, and "mvtest" relocates a test, fixes the golden output, and
moves the group entry for that test.

v2: sorting group files should preserve group order; nextid should use
the same algorithm as new; move both tools to tools/.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tools/mvtest     |   55 +++++++++++++++++++++++++++
 tools/nextid     |    1 
 tools/sort-group |  112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 168 insertions(+)
 create mode 100755 tools/mvtest
 create mode 120000 tools/nextid
 create mode 100755 tools/sort-group


diff --git a/tools/mvtest b/tools/mvtest
new file mode 100755
index 0000000..af601d6
--- /dev/null
+++ b/tools/mvtest
@@ -0,0 +1,55 @@
+#!/bin/sh
+
+# Renumber a test
+dir="$(dirname "$0")"
+
+if [ -z "$1" ] || [ "$1" = "--help" ]; then
+	echo "Usage: $0 path_to_test new_path_to_test"
+	exit 1
+fi
+
+src="$1"
+dest="$2"
+
+die() {
+	echo "$@"
+	exit 1
+}
+
+append() {
+	out="$1"
+	shift
+	echo "$@" >> "${out}"
+}
+
+test "${src}" != "${dest}" || die "Test \"${src}\" is the same as dest."
+test -e "tests/${src}" || die "Test \"${src}\" does not exist."
+test ! -e "tests/${dest}" || die "Test \"${src}\" already exists."
+
+sid="$(basename "${src}")"
+did="$(basename "${dest}")"
+
+sgroup="$(basename "$(dirname "tests/${src}")")"
+dgroup="$(basename "$(dirname "tests/${dest}")")"
+
+sgroupfile="tests/${sgroup}/group"
+dgroupfile="tests/${sgroup}/group"
+
+git mv "tests/${src}" "tests/${dest}"
+git mv "tests/${src}.out" "tests/${dest}.out"
+sed -e "s/^# FS QA Test No. ${sid}$/# FS QA Test No. ${did}/g" -i "tests/${dest}"
+sed -e "s/^QA output created by ${sid}$/QA output created by ${did}/g" -i "tests/${dest}.out"
+sed -e "s/test-${sid}/test-${did}/g" -i "tests/${dest}.out"
+
+grpline="$(grep "^${sid} " "${sgroupfile}")"
+newgrpline="$(echo "${grpline}" | sed -e "s/^${sid} /${did} /g")"
+
+sed -e "/^${sid}.*$/d" -i "${sgroupfile}"
+cp "${dgroupfile}" "${dgroupfile}.new"
+append "${dgroupfile}.new" "${newgrpline}"
+"${dir}/sort-group.py" "${dgroupfile}.new"
+mv "${dgroupfile}.new" "${dgroupfile}"
+
+echo "Moved \"${src}\" to \"${dest}\"."
+
+exit 0
diff --git a/tools/nextid b/tools/nextid
new file mode 120000
index 0000000..5c31d60
--- /dev/null
+++ b/tools/nextid
@@ -0,0 +1 @@
+sort-group
\ No newline at end of file
diff --git a/tools/sort-group b/tools/sort-group
new file mode 100755
index 0000000..84944ed
--- /dev/null
+++ b/tools/sort-group
@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+import sys
+
+# Sort a group list, carefully preserving comments.
+
+def xfstest_key(key):
+	'''Extract the numeric part of a test name if possible.'''
+	k = 0
+
+	assert type(key) == str
+
+	# No test number at all...
+	if not key[0].isdigit():
+		return key
+
+	# ...otherwise extract as much number as we can.
+	for digit in key:
+		if digit.isdigit():
+			k = k * 10 + int(digit)
+		else:
+			return k
+	return k
+
+def read_group(fd):
+	'''Read the group list, carefully attaching comments to the next test.'''
+	tests = {}
+	comments = None
+
+	for line in fd:
+		sline = line.strip()
+		tokens = sline.split()
+		if len(tokens) == 0 or tokens[0] == '#':
+			if comments == None:
+				comments = []
+			comments.append(sline)
+		else:
+			tests[tokens[0]] = (comments, tokens[1:])
+			comments = None
+	return tests
+
+def sort_keys(keys):
+	'''Separate keys into integer and non-integer tests.'''
+	int_keys = []
+	int_xkeys = []
+	str_keys = []
+
+	# Sort keys into integer(ish) tests and other
+	for key in keys:
+		xkey = xfstest_key(key)
+		if type(xkey) == int:
+			int_keys.append(key)
+			int_xkeys.append(xkey)
+		else:
+			str_keys.append(key)
+	return (int_keys, int_xkeys, str_keys)
+
+def write_sorted(tests, fd):
+	def dump_xkey(xkey):
+		(comments, tokens) = tests[key]
+		if comments:
+			for c in comments:
+				fd.write('%s\n' % c)
+		fd.write('%s %s\n' % (key, ' '.join(tokens)))
+	'''Print tests (and comments) in number order.'''
+
+	(int_keys, ignored, str_keys) = sort_keys(tests.keys())
+	for key in sorted(int_keys, key = xfstest_key):
+		dump_xkey(key)
+	for key in sorted(str_keys):
+		dump_xkey(key)
+
+def sort_main():
+	if '--help' in sys.argv[1:]:
+		print('Usage: %s groupfiles' % sys.argv[0])
+		sys.exit(0)
+
+	for arg in sys.argv[1:]:
+		with open(arg, 'r+') as fd:
+			x = read_group(fd)
+			fd.seek(0, 0)
+			write_sorted(x, fd)
+
+def nextid_main():
+	if '--help' in sys.argv[1:]:
+		print('Usage: %s group[/startid] ' % sys.argv[0])
+		sys.exit(0)
+
+	if len(sys.argv) != 2:
+		print('Specify exactly one group name.')
+		sys.exit(1)
+
+	c = sys.argv[1].split('/')
+	if len(c) > 1:
+		startid = int(c[1])
+	else:
+		startid = 1
+	group = c[0]
+
+	with open('tests/%s/group' % group, 'r') as fd:
+		x = read_group(fd)
+		xkeys = {int(x) for x in sort_keys(x.keys())[1]}
+
+		xid = startid
+		while xid in xkeys:
+			xid += 1
+		print('%s/%d' % (group, xid))
+
+if __name__ == '__main__':
+	if 'nextid' in sys.argv[0]:
+		nextid_main()
+	else:
+		sort_main()

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[PATCH 02/11] tests: don't leave cruft behind on the TEST_MNT

[Darrick J. Wong]

Don't leave cruft behind on the test device's filesystem, so as to
avoid filling it with debris.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/110 |    2 +-
 tests/generic/111 |    2 +-
 tests/generic/115 |    2 +-
 tests/generic/159 |    2 +-
 tests/generic/160 |    2 +-
 tests/xfs/129     |    2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)


diff --git a/tests/generic/110 b/tests/generic/110
index 468d859..fffadbc 100755
--- a/tests/generic/110
+++ b/tests/generic/110
@@ -37,7 +37,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
-    rm -f $tmp.*
+    rm -f $tmp.* "$TESTDIR"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/111 b/tests/generic/111
index 1797233..98077d8 100755
--- a/tests/generic/111
+++ b/tests/generic/111
@@ -37,7 +37,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
-    rm -f $tmp.*
+    rm -f $tmp.* "$TESTDIR"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/115 b/tests/generic/115
index b5c64ec..6c8d92d 100755
--- a/tests/generic/115
+++ b/tests/generic/115
@@ -35,7 +35,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
-    rm -f $tmp.*
+    rm -f $tmp.* "$TESTDIR"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/159 b/tests/generic/159
index 7944267..369663d 100755
--- a/tests/generic/159
+++ b/tests/generic/159
@@ -32,7 +32,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
- #   rm -rf "$tmp".* "$TESTDIR1"
+    rm -rf "$tmp".* "$TESTDIR1"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/160 b/tests/generic/160
index e8c43df..4dfee12 100755
--- a/tests/generic/160
+++ b/tests/generic/160
@@ -32,7 +32,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
- #   rm -rf "$tmp".* "$TESTDIR1"
+    rm -rf "$tmp".* "$TESTDIR1"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/xfs/129 b/tests/xfs/129
index 6279d69..6fb9bac 100755
--- a/tests/xfs/129
+++ b/tests/xfs/129
@@ -35,7 +35,7 @@ _cleanup()
 {
     cd /
     umount "$SCRATCH_MNT" > /dev/null 2>&1
-    rm -rf "$tmp".* "$TESTDIR" "$METADUMP_FILE"
+    rm -rf "$tmp".* "$TESTDIR" "$METADUMP_FILE" "$TEST_DIR/image"
 }
 
 # get standard environment, filters and checks

[PATCH 02/11] tests: don't leave cruft behind on the TEST_MNT

[Darrick J. Wong]

Don't leave cruft behind on the test device's filesystem, so as to
avoid filling it with debris.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/110 |    2 +-
 tests/generic/111 |    2 +-
 tests/generic/115 |    2 +-
 tests/generic/159 |    2 +-
 tests/generic/160 |    2 +-
 tests/xfs/129     |    2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)


diff --git a/tests/generic/110 b/tests/generic/110
index 468d859..fffadbc 100755
--- a/tests/generic/110
+++ b/tests/generic/110
@@ -37,7 +37,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
-    rm -f $tmp.*
+    rm -f $tmp.* "$TESTDIR"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/111 b/tests/generic/111
index 1797233..98077d8 100755
--- a/tests/generic/111
+++ b/tests/generic/111
@@ -37,7 +37,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
-    rm -f $tmp.*
+    rm -f $tmp.* "$TESTDIR"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/115 b/tests/generic/115
index b5c64ec..6c8d92d 100755
--- a/tests/generic/115
+++ b/tests/generic/115
@@ -35,7 +35,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
-    rm -f $tmp.*
+    rm -f $tmp.* "$TESTDIR"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/159 b/tests/generic/159
index 7944267..369663d 100755
--- a/tests/generic/159
+++ b/tests/generic/159
@@ -32,7 +32,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
- #   rm -rf "$tmp".* "$TESTDIR1"
+    rm -rf "$tmp".* "$TESTDIR1"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/generic/160 b/tests/generic/160
index e8c43df..4dfee12 100755
--- a/tests/generic/160
+++ b/tests/generic/160
@@ -32,7 +32,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _cleanup()
 {
     cd /
- #   rm -rf "$tmp".* "$TESTDIR1"
+    rm -rf "$tmp".* "$TESTDIR1"
 }
 
 # get standard environment, filters and checks
diff --git a/tests/xfs/129 b/tests/xfs/129
index 6279d69..6fb9bac 100755
--- a/tests/xfs/129
+++ b/tests/xfs/129
@@ -35,7 +35,7 @@ _cleanup()
 {
     cd /
     umount "$SCRATCH_MNT" > /dev/null 2>&1
-    rm -rf "$tmp".* "$TESTDIR" "$METADUMP_FILE"
+    rm -rf "$tmp".* "$TESTDIR" "$METADUMP_FILE" "$TEST_DIR/image"
 }
 
 # get standard environment, filters and checks

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[PATCH 03/11] generic/15[78]: fix error messages in the golden output

[Darrick J. Wong]

Fix the error messages in the golden output for generic/15[78], which
examine the responses to invalid inputs as returned by the
clone/clone_range/extent_same ioctls.  Also fix a filtering omission.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/157     |   18 +++++++++++++-----
 tests/generic/157.out |    6 +++---
 tests/generic/158     |   18 +++++++++++++-----
 tests/generic/158.out |    8 ++++----
 4 files changed, 33 insertions(+), 17 deletions(-)


diff --git a/tests/generic/157 b/tests/generic/157
index a43fb0d..f68ff52 100755
--- a/tests/generic/157
+++ b/tests/generic/157
@@ -75,10 +75,18 @@ mkdir "$TESTDIR1/dir1"
 seq 1 $((2 * BLKSZ / 250)) | while read f; do
 	touch "$TESTDIR1/dir1/$f"
 done
-mknod "$TESTDIR1/dev1" b 8 0
+mknod "$TESTDIR1/dev1" c 1 3
 mkfifo "$TESTDIR1/fifo1"
 sync
 
+_filter_enotty() {
+	sed -e 's/Inappropriate ioctl for device/Invalid argument/g'
+}
+
+_filter_einval() {
+	sed -e 's/Invalid argument/Bad file descriptor/g'
+}
+
 echo "Try cross-device reflink"
 _reflink_range "$TESTDIR1/file1" 0 "$TESTDIR2/file1" 0 $BLKSZ
 
@@ -98,16 +106,16 @@ echo "Try to reflink a device"
 _reflink_range "$TESTDIR1/dev1" 0 "$TESTDIR1/file2" 0 $BLKSZ
 
 echo "Try to reflink to a dir"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ 2>&1 | _filter_test_dir
 
 echo "Try to reflink to a device"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ 2>&1 | _filter_enotty
 
 echo "Try to reflink to a fifo"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n 2>&1 | _filter_enotty
 
 echo "Try to reflink an append-only file"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/file3" 0 $BLKSZ -a
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/file3" 0 $BLKSZ -a 2>&1 | _filter_einval
 
 echo "Reflink two files"
 _reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/file2" 0 $BLKSZ >> "$seqres.full"
diff --git a/tests/generic/157.out b/tests/generic/157.out
index 177e7f8..ac3c440 100644
--- a/tests/generic/157.out
+++ b/tests/generic/157.out
@@ -14,11 +14,11 @@ XFS_IOC_CLONE_RANGE: Is a directory
 Try to reflink a device
 XFS_IOC_CLONE_RANGE: Invalid argument
 Try to reflink to a dir
-/mnt/test-157/dir1: Is a directory
+TEST_DIR/test-157/dir1: Is a directory
 Try to reflink to a device
-XFS_IOC_CLONE_RANGE: Operation not supported
+XFS_IOC_CLONE_RANGE: Invalid argument
 Try to reflink to a fifo
-XFS_IOC_CLONE_RANGE: Operation not supported
+XFS_IOC_CLONE_RANGE: Invalid argument
 Try to reflink an append-only file
 XFS_IOC_CLONE_RANGE: Bad file descriptor
 Reflink two files
diff --git a/tests/generic/158 b/tests/generic/158
index a499b21..749b186 100755
--- a/tests/generic/158
+++ b/tests/generic/158
@@ -76,10 +76,18 @@ mkdir "$TESTDIR1/dir1"
 seq 1 $((2 * BLKSZ / 250)) | while read f; do
 	touch "$TESTDIR1/dir1/$f"
 done
-mknod "$TESTDIR1/dev1" b 8 0
+mknod "$TESTDIR1/dev1" c 1 3
 mkfifo "$TESTDIR1/fifo1"
 sync
 
+_filter_enotty() {
+	sed -e 's/Inappropriate ioctl for device/Invalid argument/g'
+}
+
+_filter_eperm() {
+	sed -e 's/Permission denied/Invalid argument/g'
+}
+
 echo "Try cross-device dedupe"
 _dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR2/file1" 0 $BLKSZ
 
@@ -96,16 +104,16 @@ echo "Try to dedupe a dir"
 _dedupe_range "$TESTDIR1/dir1" 0 "$TESTDIR1/file2" 0 $BLKSZ
 
 echo "Try to dedupe a device"
-_dedupe_range "$TESTDIR1/dev1" 0 "$TESTDIR1/file2" 0 $BLKSZ
+_dedupe_range "$TESTDIR1/dev1" 0 "$TESTDIR1/file2" 0 $BLKSZ 2>&1 | _filter_enotty
 
 echo "Try to dedupe to a dir"
-_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ
+_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ 2>&1 | _filter_test_dir
 
 echo "Try to dedupe to a device"
-_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ
+_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ 2>&1 | _filter_eperm
 
 echo "Try to dedupe to a fifo"
-_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n
+_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n 2>&1 | _filter_eperm
 
 echo "Try to dedupe an append-only file"
 _dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/file3" 0 $BLKSZ -a >> "$seqres.full"
diff --git a/tests/generic/158.out b/tests/generic/158.out
index 36a3f1f..dff3692 100644
--- a/tests/generic/158.out
+++ b/tests/generic/158.out
@@ -12,13 +12,13 @@ dedupe: Invalid argument
 Try to dedupe a dir
 XFS_IOC_FILE_EXTENT_SAME: Is a directory
 Try to dedupe a device
-XFS_IOC_FILE_EXTENT_SAME: Permission denied
+XFS_IOC_FILE_EXTENT_SAME: Invalid argument
 Try to dedupe to a dir
-/mnt/test-158/dir1: Is a directory
+TEST_DIR/test-158/dir1: Is a directory
 Try to dedupe to a device
-dedupe: Permission denied
+dedupe: Invalid argument
 Try to dedupe to a fifo
-dedupe: Permission denied
+dedupe: Invalid argument
 Try to dedupe an append-only file
 Dedupe two files
 Check scratch fs

[PATCH 03/11] generic/15[78]: fix error messages in the golden output

[Darrick J. Wong]

Fix the error messages in the golden output for generic/15[78], which
examine the responses to invalid inputs as returned by the
clone/clone_range/extent_same ioctls.  Also fix a filtering omission.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/157     |   18 +++++++++++++-----
 tests/generic/157.out |    6 +++---
 tests/generic/158     |   18 +++++++++++++-----
 tests/generic/158.out |    8 ++++----
 4 files changed, 33 insertions(+), 17 deletions(-)


diff --git a/tests/generic/157 b/tests/generic/157
index a43fb0d..f68ff52 100755
--- a/tests/generic/157
+++ b/tests/generic/157
@@ -75,10 +75,18 @@ mkdir "$TESTDIR1/dir1"
 seq 1 $((2 * BLKSZ / 250)) | while read f; do
 	touch "$TESTDIR1/dir1/$f"
 done
-mknod "$TESTDIR1/dev1" b 8 0
+mknod "$TESTDIR1/dev1" c 1 3
 mkfifo "$TESTDIR1/fifo1"
 sync
 
+_filter_enotty() {
+	sed -e 's/Inappropriate ioctl for device/Invalid argument/g'
+}
+
+_filter_einval() {
+	sed -e 's/Invalid argument/Bad file descriptor/g'
+}
+
 echo "Try cross-device reflink"
 _reflink_range "$TESTDIR1/file1" 0 "$TESTDIR2/file1" 0 $BLKSZ
 
@@ -98,16 +106,16 @@ echo "Try to reflink a device"
 _reflink_range "$TESTDIR1/dev1" 0 "$TESTDIR1/file2" 0 $BLKSZ
 
 echo "Try to reflink to a dir"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ 2>&1 | _filter_test_dir
 
 echo "Try to reflink to a device"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ 2>&1 | _filter_enotty
 
 echo "Try to reflink to a fifo"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n 2>&1 | _filter_enotty
 
 echo "Try to reflink an append-only file"
-_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/file3" 0 $BLKSZ -a
+_reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/file3" 0 $BLKSZ -a 2>&1 | _filter_einval
 
 echo "Reflink two files"
 _reflink_range "$TESTDIR1/file1" 0 "$TESTDIR1/file2" 0 $BLKSZ >> "$seqres.full"
diff --git a/tests/generic/157.out b/tests/generic/157.out
index 177e7f8..ac3c440 100644
--- a/tests/generic/157.out
+++ b/tests/generic/157.out
@@ -14,11 +14,11 @@ XFS_IOC_CLONE_RANGE: Is a directory
 Try to reflink a device
 XFS_IOC_CLONE_RANGE: Invalid argument
 Try to reflink to a dir
-/mnt/test-157/dir1: Is a directory
+TEST_DIR/test-157/dir1: Is a directory
 Try to reflink to a device
-XFS_IOC_CLONE_RANGE: Operation not supported
+XFS_IOC_CLONE_RANGE: Invalid argument
 Try to reflink to a fifo
-XFS_IOC_CLONE_RANGE: Operation not supported
+XFS_IOC_CLONE_RANGE: Invalid argument
 Try to reflink an append-only file
 XFS_IOC_CLONE_RANGE: Bad file descriptor
 Reflink two files
diff --git a/tests/generic/158 b/tests/generic/158
index a499b21..749b186 100755
--- a/tests/generic/158
+++ b/tests/generic/158
@@ -76,10 +76,18 @@ mkdir "$TESTDIR1/dir1"
 seq 1 $((2 * BLKSZ / 250)) | while read f; do
 	touch "$TESTDIR1/dir1/$f"
 done
-mknod "$TESTDIR1/dev1" b 8 0
+mknod "$TESTDIR1/dev1" c 1 3
 mkfifo "$TESTDIR1/fifo1"
 sync
 
+_filter_enotty() {
+	sed -e 's/Inappropriate ioctl for device/Invalid argument/g'
+}
+
+_filter_eperm() {
+	sed -e 's/Permission denied/Invalid argument/g'
+}
+
 echo "Try cross-device dedupe"
 _dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR2/file1" 0 $BLKSZ
 
@@ -96,16 +104,16 @@ echo "Try to dedupe a dir"
 _dedupe_range "$TESTDIR1/dir1" 0 "$TESTDIR1/file2" 0 $BLKSZ
 
 echo "Try to dedupe a device"
-_dedupe_range "$TESTDIR1/dev1" 0 "$TESTDIR1/file2" 0 $BLKSZ
+_dedupe_range "$TESTDIR1/dev1" 0 "$TESTDIR1/file2" 0 $BLKSZ 2>&1 | _filter_enotty
 
 echo "Try to dedupe to a dir"
-_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ
+_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dir1" 0 $BLKSZ 2>&1 | _filter_test_dir
 
 echo "Try to dedupe to a device"
-_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ
+_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/dev1" 0 $BLKSZ 2>&1 | _filter_eperm
 
 echo "Try to dedupe to a fifo"
-_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n
+_dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/fifo1" 0 $BLKSZ -n 2>&1 | _filter_eperm
 
 echo "Try to dedupe an append-only file"
 _dedupe_range "$TESTDIR1/file1" 0 "$TESTDIR1/file3" 0 $BLKSZ -a >> "$seqres.full"
diff --git a/tests/generic/158.out b/tests/generic/158.out
index 36a3f1f..dff3692 100644
--- a/tests/generic/158.out
+++ b/tests/generic/158.out
@@ -12,13 +12,13 @@ dedupe: Invalid argument
 Try to dedupe a dir
 XFS_IOC_FILE_EXTENT_SAME: Is a directory
 Try to dedupe a device
-XFS_IOC_FILE_EXTENT_SAME: Permission denied
+XFS_IOC_FILE_EXTENT_SAME: Invalid argument
 Try to dedupe to a dir
-/mnt/test-158/dir1: Is a directory
+TEST_DIR/test-158/dir1: Is a directory
 Try to dedupe to a device
-dedupe: Permission denied
+dedupe: Invalid argument
 Try to dedupe to a fifo
-dedupe: Permission denied
+dedupe: Invalid argument
 Try to dedupe an append-only file
 Dedupe two files
 Check scratch fs

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[PATCH 04/11] xfs/128: allow larger margin for disk space usage

[Darrick J. Wong]

The free blocks count can vary from our calculations by up to 8% on a
1k-block filesystem, so permit that.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/xfs/128 |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


diff --git a/tests/xfs/128 b/tests/xfs/128
index 49652cb..f461c1a 100755
--- a/tests/xfs/128
+++ b/tests/xfs/128
@@ -59,7 +59,7 @@ FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f')
 
 echo "Create the original file and reflink to file2, file3"
 BLKS=2000
-MARGIN=100
+MARGIN=160
 BLKSZ=65536
 REAL_BLKSZ="$(stat -f $TESTDIR -c '%S')"
 BLKSZ_FACTOR=$((BLKSZ / REAL_BLKSZ))

[PATCH 04/11] xfs/128: allow larger margin for disk space usage

[Darrick J. Wong]

The free blocks count can vary from our calculations by up to 8% on a
1k-block filesystem, so permit that.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/xfs/128 |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


diff --git a/tests/xfs/128 b/tests/xfs/128
index 49652cb..f461c1a 100755
--- a/tests/xfs/128
+++ b/tests/xfs/128
@@ -59,7 +59,7 @@ FREE_BLOCKS0=$(stat -f "$TESTDIR" -c '%f')
 
 echo "Create the original file and reflink to file2, file3"
 BLKS=2000
-MARGIN=100
+MARGIN=160
 BLKSZ=65536
 REAL_BLKSZ="$(stat -f $TESTDIR -c '%S')"
 BLKSZ_FACTOR=$((BLKSZ / REAL_BLKSZ))

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[PATCH 05/11] xfs/129: require loop

[Darrick J. Wong]

Missed a _require_loop for xfs/129.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/xfs/129 |    1 +
 1 file changed, 1 insertion(+)


diff --git a/tests/xfs/129 b/tests/xfs/129
index 6fb9bac..c8c47a2 100755
--- a/tests/xfs/129
+++ b/tests/xfs/129
@@ -46,6 +46,7 @@ _cleanup()
 # real QA test starts here
 _supported_os Linux
 _supported_fs xfs
+_require_loop
 _require_scratch_reflink
 
 rm -f "$seqres.full"

[PATCH 05/11] xfs/129: require loop

[Darrick J. Wong]

Missed a _require_loop for xfs/129.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/xfs/129 |    1 +
 1 file changed, 1 insertion(+)


diff --git a/tests/xfs/129 b/tests/xfs/129
index 6fb9bac..c8c47a2 100755
--- a/tests/xfs/129
+++ b/tests/xfs/129
@@ -46,6 +46,7 @@ _cleanup()
 # real QA test starts here
 _supported_os Linux
 _supported_fs xfs
+_require_loop
 _require_scratch_reflink
 
 rm -f "$seqres.full"

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[PATCH 06/11] reflink: more tests

[Darrick J. Wong]

Add more tests for unaligned copy-on-write things, and explicitly
test the ability to pass "len == 0" to mean reflink/dedupe all
the way to the end of the file".

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/820     |   77 ++++++++++++++++++++++++++++++++
 tests/generic/820.out |    8 +++
 tests/generic/847     |   96 ++++++++++++++++++++++++++++++++++++++++
 tests/generic/847.out |   11 +++++
 tests/generic/848     |   96 ++++++++++++++++++++++++++++++++++++++++
 tests/generic/848.out |   11 +++++
 tests/generic/849     |   80 ++++++++++++++++++++++++++++++++++
 tests/generic/849.out |    6 +++
 tests/generic/850     |  117 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/850.out |   17 +++++++
 tests/generic/group   |    5 ++
 11 files changed, 524 insertions(+)
 create mode 100755 tests/generic/820
 create mode 100644 tests/generic/820.out
 create mode 100755 tests/generic/847
 create mode 100644 tests/generic/847.out
 create mode 100755 tests/generic/848
 create mode 100644 tests/generic/848.out
 create mode 100755 tests/generic/849
 create mode 100644 tests/generic/849.out
 create mode 100755 tests/generic/850
 create mode 100644 tests/generic/850.out


diff --git a/tests/generic/820 b/tests/generic/820
new file mode 100755
index 0000000..e475f71
--- /dev/null
+++ b/tests/generic/820
@@ -0,0 +1,77 @@
+#! /bin/bash
+# FS QA Test No. 820
+#
+# Ensure that punch-hole doesn't clobber CoW.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fpunch"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+NR=512
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+
+echo "Write and punch"
+_pwrite_byte 0x62 0 $((BLKSZ * 256)) "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "fpunch $BLKSZ $((BLKSZ * 254))" "$TESTDIR/file2"
+_test_remount
+
+echo "Compare results"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/820.out b/tests/generic/820.out
new file mode 100644
index 0000000..527617d
--- /dev/null
+++ b/tests/generic/820.out
@@ -0,0 +1,8 @@
+QA output created by 820
+Create the original files
+bc3d7c2ff64219e33239f2e13c2d21db  TEST_DIR/test-820/file1
+bc3d7c2ff64219e33239f2e13c2d21db  TEST_DIR/test-820/file2
+Write and punch
+Compare results
+bc3d7c2ff64219e33239f2e13c2d21db  TEST_DIR/test-820/file1
+95cfd19ce56010430dc2057413d7efc5  TEST_DIR/test-820/file2
diff --git a/tests/generic/847 b/tests/generic/847
new file mode 100755
index 0000000..ee8b53b
--- /dev/null
+++ b/tests/generic/847
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 847
+#
+# Ensure that unaligned punch-hole steps around reflinked ranges:
+#   - Create a reflink clone of a file
+#   - Perform an unaligned punch in the middle of the file.
+#   - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fpunch"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ - 17)) $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+
+echo "fpunch files"
+"$XFS_IO_PROG" -f -c "fpunch $((BLKSZ - 17)) $((BLKSZ + 17))" "$TESTDIR/file2"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/847.out b/tests/generic/847.out
new file mode 100644
index 0000000..8139857
--- /dev/null
+++ b/tests/generic/847.out
@@ -0,0 +1,11 @@
+QA output created by 847
+Create the original files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-847/file1
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-847/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-847/file2.chk
+fpunch files
+Compare files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-847/file1
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-847/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-847/file2.chk
+Compare against check files
diff --git a/tests/generic/848 b/tests/generic/848
new file mode 100755
index 0000000..cb848fb
--- /dev/null
+++ b/tests/generic/848
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 848
+#
+# Ensure that unaligned zero-range steps around reflinked ranges:
+#   - Create a reflink clone of a file
+#   - Perform an unaligned zero-range in the middle of the file.
+#   - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fzero"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ - 17)) $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+
+echo "fzero files"
+"$XFS_IO_PROG" -f -c "fzero $((BLKSZ - 17)) $((BLKSZ + 17))" "$TESTDIR/file2"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/848.out b/tests/generic/848.out
new file mode 100644
index 0000000..94c674b
--- /dev/null
+++ b/tests/generic/848.out
@@ -0,0 +1,11 @@
+QA output created by 848
+Create the original files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-848/file1
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-848/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-848/file2.chk
+fzero files
+Compare files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-848/file1
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-848/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-848/file2.chk
+Compare against check files
diff --git a/tests/generic/849 b/tests/generic/849
new file mode 100755
index 0000000..76f1e70
--- /dev/null
+++ b/tests/generic/849
@@ -0,0 +1,80 @@
+#! /bin/bash
+# FS QA Test No. 849
+#
+# Test the convention that reflink with length == 0 means "to the end of fileA"
+#   - Create a file.
+#   - Try to reflink "zero" bytes.
+#   - Check that the reflink happened.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 256)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 2)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $((BLKSZ * 255)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/849.out b/tests/generic/849.out
new file mode 100644
index 0000000..159305a
--- /dev/null
+++ b/tests/generic/849.out
@@ -0,0 +1,6 @@
+QA output created by 849
+Create the original files
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-849/file1
+dc881c004745c49f7f4e9cc766f57bc8  TEST_DIR/test-849/file2
+dc881c004745c49f7f4e9cc766f57bc8  TEST_DIR/test-849/file2.chk
+Compare against check files
diff --git a/tests/generic/850 b/tests/generic/850
new file mode 100755
index 0000000..954d41d
--- /dev/null
+++ b/tests/generic/850
@@ -0,0 +1,117 @@
+#! /bin/bash
+# FS QA Test No. 850
+#
+# Test the convention that reflink with length == 0 means "to the end of fileA"
+#   - Create a file.
+#   - Try to reflink "zero" bytes (which means reflink to EOF).
+#   - Check that the reflink happened.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 257)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 257)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_dedupe_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "Make the original file almost dedup-able"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_dedupe_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "Make the original file dedup-able"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 257)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 257)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_dedupe_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/850.out b/tests/generic/850.out
new file mode 100644
index 0000000..126187e
--- /dev/null
+++ b/tests/generic/850.out
@@ -0,0 +1,17 @@
+QA output created by 850
+Create the original files
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-850/file1
+69ad53078a16243d98e21d9f8704a071  TEST_DIR/test-850/file2
+69ad53078a16243d98e21d9f8704a071  TEST_DIR/test-850/file2.chk
+Compare against check files
+Make the original file almost dedup-able
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-850/file1
+158d4e3578b94b89cbb44493a2110fb9  TEST_DIR/test-850/file2
+158d4e3578b94b89cbb44493a2110fb9  TEST_DIR/test-850/file2.chk
+Compare against check files
+Make the original file dedup-able
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-850/file1
+113c7055ffe3d24d2dec27e82ab55abd  TEST_DIR/test-850/file2
+113c7055ffe3d24d2dec27e82ab55abd  TEST_DIR/test-850/file2.chk
+file1 and file2 should match
+Compare against check files
diff --git a/tests/generic/group b/tests/generic/group
index 355603f..bf33541 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -257,3 +257,8 @@
 323 auto aio stress
 324 auto fsr quick
 325 auto quick data log
+820 auto quick clone
+847 auto quick clone
+848 auto quick clone
+849 auto quick clone
+850 auto quick clone

[PATCH 06/11] reflink: more tests

[Darrick J. Wong]

Add more tests for unaligned copy-on-write things, and explicitly
test the ability to pass "len == 0" to mean reflink/dedupe all
the way to the end of the file".

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/820     |   77 ++++++++++++++++++++++++++++++++
 tests/generic/820.out |    8 +++
 tests/generic/847     |   96 ++++++++++++++++++++++++++++++++++++++++
 tests/generic/847.out |   11 +++++
 tests/generic/848     |   96 ++++++++++++++++++++++++++++++++++++++++
 tests/generic/848.out |   11 +++++
 tests/generic/849     |   80 ++++++++++++++++++++++++++++++++++
 tests/generic/849.out |    6 +++
 tests/generic/850     |  117 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/850.out |   17 +++++++
 tests/generic/group   |    5 ++
 11 files changed, 524 insertions(+)
 create mode 100755 tests/generic/820
 create mode 100644 tests/generic/820.out
 create mode 100755 tests/generic/847
 create mode 100644 tests/generic/847.out
 create mode 100755 tests/generic/848
 create mode 100644 tests/generic/848.out
 create mode 100755 tests/generic/849
 create mode 100644 tests/generic/849.out
 create mode 100755 tests/generic/850
 create mode 100644 tests/generic/850.out


diff --git a/tests/generic/820 b/tests/generic/820
new file mode 100755
index 0000000..e475f71
--- /dev/null
+++ b/tests/generic/820
@@ -0,0 +1,77 @@
+#! /bin/bash
+# FS QA Test No. 820
+#
+# Ensure that punch-hole doesn't clobber CoW.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fpunch"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+NR=512
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+
+echo "Write and punch"
+_pwrite_byte 0x62 0 $((BLKSZ * 256)) "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "fpunch $BLKSZ $((BLKSZ * 254))" "$TESTDIR/file2"
+_test_remount
+
+echo "Compare results"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/820.out b/tests/generic/820.out
new file mode 100644
index 0000000..527617d
--- /dev/null
+++ b/tests/generic/820.out
@@ -0,0 +1,8 @@
+QA output created by 820
+Create the original files
+bc3d7c2ff64219e33239f2e13c2d21db  TEST_DIR/test-820/file1
+bc3d7c2ff64219e33239f2e13c2d21db  TEST_DIR/test-820/file2
+Write and punch
+Compare results
+bc3d7c2ff64219e33239f2e13c2d21db  TEST_DIR/test-820/file1
+95cfd19ce56010430dc2057413d7efc5  TEST_DIR/test-820/file2
diff --git a/tests/generic/847 b/tests/generic/847
new file mode 100755
index 0000000..ee8b53b
--- /dev/null
+++ b/tests/generic/847
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 847
+#
+# Ensure that unaligned punch-hole steps around reflinked ranges:
+#   - Create a reflink clone of a file
+#   - Perform an unaligned punch in the middle of the file.
+#   - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fpunch"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ - 17)) $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+
+echo "fpunch files"
+"$XFS_IO_PROG" -f -c "fpunch $((BLKSZ - 17)) $((BLKSZ + 17))" "$TESTDIR/file2"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/847.out b/tests/generic/847.out
new file mode 100644
index 0000000..8139857
--- /dev/null
+++ b/tests/generic/847.out
@@ -0,0 +1,11 @@
+QA output created by 847
+Create the original files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-847/file1
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-847/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-847/file2.chk
+fpunch files
+Compare files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-847/file1
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-847/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-847/file2.chk
+Compare against check files
diff --git a/tests/generic/848 b/tests/generic/848
new file mode 100755
index 0000000..cb848fb
--- /dev/null
+++ b/tests/generic/848
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 848
+#
+# Ensure that unaligned zero-range steps around reflinked ranges:
+#   - Create a reflink clone of a file
+#   - Perform an unaligned zero-range in the middle of the file.
+#   - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fzero"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+
+_pwrite_byte 0x61 0 $((BLKSZ * 3)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ - 17)) $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+
+echo "fzero files"
+"$XFS_IO_PROG" -f -c "fzero $((BLKSZ - 17)) $((BLKSZ + 17))" "$TESTDIR/file2"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/848.out b/tests/generic/848.out
new file mode 100644
index 0000000..94c674b
--- /dev/null
+++ b/tests/generic/848.out
@@ -0,0 +1,11 @@
+QA output created by 848
+Create the original files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-848/file1
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-848/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-848/file2.chk
+fzero files
+Compare files
+998b4ba52f2940dc515001e75926b19f  TEST_DIR/test-848/file1
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-848/file2
+8cdf70c9cfb33bdc7397806b87e7c7ea  TEST_DIR/test-848/file2.chk
+Compare against check files
diff --git a/tests/generic/849 b/tests/generic/849
new file mode 100755
index 0000000..76f1e70
--- /dev/null
+++ b/tests/generic/849
@@ -0,0 +1,80 @@
+#! /bin/bash
+# FS QA Test No. 849
+#
+# Test the convention that reflink with length == 0 means "to the end of fileA"
+#   - Create a file.
+#   - Try to reflink "zero" bytes.
+#   - Check that the reflink happened.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 256)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 2)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $((BLKSZ * 255)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/849.out b/tests/generic/849.out
new file mode 100644
index 0000000..159305a
--- /dev/null
+++ b/tests/generic/849.out
@@ -0,0 +1,6 @@
+QA output created by 849
+Create the original files
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-849/file1
+dc881c004745c49f7f4e9cc766f57bc8  TEST_DIR/test-849/file2
+dc881c004745c49f7f4e9cc766f57bc8  TEST_DIR/test-849/file2.chk
+Compare against check files
diff --git a/tests/generic/850 b/tests/generic/850
new file mode 100755
index 0000000..954d41d
--- /dev/null
+++ b/tests/generic/850
@@ -0,0 +1,117 @@
+#! /bin/bash
+# FS QA Test No. 850
+#
+# Test the convention that reflink with length == 0 means "to the end of fileA"
+#   - Create a file.
+#   - Try to reflink "zero" bytes (which means reflink to EOF).
+#   - Check that the reflink happened.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 257)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * 257)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_dedupe_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "Make the original file almost dedup-able"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_dedupe_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "Make the original file dedup-able"
+_pwrite_byte 0x61 0 $((BLKSZ * 256)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 257)) "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 0 $((BLKSZ * 257)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_dedupe_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) 0 >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/850.out b/tests/generic/850.out
new file mode 100644
index 0000000..126187e
--- /dev/null
+++ b/tests/generic/850.out
@@ -0,0 +1,17 @@
+QA output created by 850
+Create the original files
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-850/file1
+69ad53078a16243d98e21d9f8704a071  TEST_DIR/test-850/file2
+69ad53078a16243d98e21d9f8704a071  TEST_DIR/test-850/file2.chk
+Compare against check files
+Make the original file almost dedup-able
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-850/file1
+158d4e3578b94b89cbb44493a2110fb9  TEST_DIR/test-850/file2
+158d4e3578b94b89cbb44493a2110fb9  TEST_DIR/test-850/file2.chk
+Compare against check files
+Make the original file dedup-able
+f4820540fc0ac02750739896fe028d56  TEST_DIR/test-850/file1
+113c7055ffe3d24d2dec27e82ab55abd  TEST_DIR/test-850/file2
+113c7055ffe3d24d2dec27e82ab55abd  TEST_DIR/test-850/file2.chk
+file1 and file2 should match
+Compare against check files
diff --git a/tests/generic/group b/tests/generic/group
index 355603f..bf33541 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -257,3 +257,8 @@
 323 auto aio stress
 324 auto fsr quick
 325 auto quick data log
+820 auto quick clone
+847 auto quick clone
+848 auto quick clone
+849 auto quick clone
+850 auto quick clone

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Re: [PATCH 06/11] reflink: more tests

[Dave Chinner]

On Sat, Dec 19, 2015 at 01:11:31AM -0800, Darrick J. Wong wrote:
> Add more tests for unaligned copy-on-write things, and explicitly
> test the ability to pass "len == 0" to mean reflink/dedupe all
> the way to the end of the file".
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
.....
> +_cleanup()
> +{
> +    cd /
> +    rm -rf "$tmp".* "$TESTDIR"
> +}
.....
> +
> +TESTDIR="$TEST_DIR/test-$seq"
> +rm -rf "$TESTDIR"
> +mkdir "$TESTDIR"

This use of TESTDIR is highly confusing. When I see TESTDIR I think
that it's the mount point of the test device, not potentially some
directory on the scratch device.

I see that this occurs through lots of tests, not just these new
ones. Can you do a pass across the tests with, say, sed and rename
all these to something less confusing? e.g. "testdir", in lower
case, makes it clear that it's a local variable, not the global test
device mount point.... (i.e. test local variables are lower case,
exported test harnes variables are upper case ;)

Separate patch/pull req is fine.

Cheers,

dave.
-- 
Dave Chinner
david@fromorbit.com

Re: [PATCH 06/11] reflink: more tests

[Dave Chinner]

On Sat, Dec 19, 2015 at 01:11:31AM -0800, Darrick J. Wong wrote:
> Add more tests for unaligned copy-on-write things, and explicitly
> test the ability to pass "len == 0" to mean reflink/dedupe all
> the way to the end of the file".
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
.....
> +_cleanup()
> +{
> +    cd /
> +    rm -rf "$tmp".* "$TESTDIR"
> +}
.....
> +
> +TESTDIR="$TEST_DIR/test-$seq"
> +rm -rf "$TESTDIR"
> +mkdir "$TESTDIR"

This use of TESTDIR is highly confusing. When I see TESTDIR I think
that it's the mount point of the test device, not potentially some
directory on the scratch device.

I see that this occurs through lots of tests, not just these new
ones. Can you do a pass across the tests with, say, sed and rename
all these to something less confusing? e.g. "testdir", in lower
case, makes it clear that it's a local variable, not the global test
device mount point.... (i.e. test local variables are lower case,
exported test harnes variables are upper case ;)

Separate patch/pull req is fine.

Cheers,

dave.
-- 
Dave Chinner
david@fromorbit.com

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Re: [PATCH 06/11] reflink: more tests

[Darrick J. Wong]

On Mon, Dec 21, 2015 at 05:31:11PM +1100, Dave Chinner wrote:
> On Sat, Dec 19, 2015 at 01:11:31AM -0800, Darrick J. Wong wrote:
> > Add more tests for unaligned copy-on-write things, and explicitly
> > test the ability to pass "len == 0" to mean reflink/dedupe all
> > the way to the end of the file".
> > 
> > Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> .....
> > +_cleanup()
> > +{
> > +    cd /
> > +    rm -rf "$tmp".* "$TESTDIR"
> > +}
> .....
> > +
> > +TESTDIR="$TEST_DIR/test-$seq"
> > +rm -rf "$TESTDIR"
> > +mkdir "$TESTDIR"
> 
> This use of TESTDIR is highly confusing. When I see TESTDIR I think
> that it's the mount point of the test device, not potentially some
> directory on the scratch device.
> 
> I see that this occurs through lots of tests, not just these new
> ones. Can you do a pass across the tests with, say, sed and rename
> all these to something less confusing? e.g. "testdir", in lower
> case, makes it clear that it's a local variable, not the global test
> device mount point.... (i.e. test local variables are lower case,
> exported test harnes variables are upper case ;)
> 
> Separate patch/pull req is fine.

No problem.  Will give it a spin on the test harness before sending.

(Yikes, it's a 272K patch...)

--D

> 
> Cheers,
> 
> dave.
> -- 
> Dave Chinner
> david@fromorbit.com

Re: [PATCH 06/11] reflink: more tests

[Darrick J. Wong]

On Mon, Dec 21, 2015 at 05:31:11PM +1100, Dave Chinner wrote:
> On Sat, Dec 19, 2015 at 01:11:31AM -0800, Darrick J. Wong wrote:
> > Add more tests for unaligned copy-on-write things, and explicitly
> > test the ability to pass "len == 0" to mean reflink/dedupe all
> > the way to the end of the file".
> > 
> > Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> .....
> > +_cleanup()
> > +{
> > +    cd /
> > +    rm -rf "$tmp".* "$TESTDIR"
> > +}
> .....
> > +
> > +TESTDIR="$TEST_DIR/test-$seq"
> > +rm -rf "$TESTDIR"
> > +mkdir "$TESTDIR"
> 
> This use of TESTDIR is highly confusing. When I see TESTDIR I think
> that it's the mount point of the test device, not potentially some
> directory on the scratch device.
> 
> I see that this occurs through lots of tests, not just these new
> ones. Can you do a pass across the tests with, say, sed and rename
> all these to something less confusing? e.g. "testdir", in lower
> case, makes it clear that it's a local variable, not the global test
> device mount point.... (i.e. test local variables are lower case,
> exported test harnes variables are upper case ;)
> 
> Separate patch/pull req is fine.

No problem.  Will give it a spin on the test harness before sending.

(Yikes, it's a 272K patch...)

--D

> 
> Cheers,
> 
> dave.
> -- 
> Dave Chinner
> david@fromorbit.com

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[PATCH 07/11] reflink: test ENOSPC when expanding btrees during reflink operations

[Darrick J. Wong]

See what happens when we ENOSPC while growing a btree on behalf of
some reflink operation.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/xfs/805     |   82 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/805.out |    8 +++++
 tests/xfs/806     |   89 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/806.out |    7 ++++
 tests/xfs/group   |    2 +
 5 files changed, 188 insertions(+)
 create mode 100755 tests/xfs/805
 create mode 100644 tests/xfs/805.out
 create mode 100755 tests/xfs/806
 create mode 100644 tests/xfs/806.out


diff --git a/tests/xfs/805 b/tests/xfs/805
new file mode 100755
index 0000000..17a7743
--- /dev/null
+++ b/tests/xfs/805
@@ -0,0 +1,82 @@
+#! /bin/bash
+# FS QA Test No. 806
+#
+# Try to ENOSPC while expanding the refcntbt by CoWing every block
+# of a file that eats the whole AG.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs -d agsize=$((32 * 1048576)) > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+BLKSZ="$(stat -f "$TESTDIR" -c '%S')"
+
+echo "Create the original files"
+SZ=$((48 * 1048576))
+NR=$((SZ / BLKSZ))
+_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "CoW every other block"
+_pwrite_byte 0x62 0 $SZ "$TESTDIR/file1" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+#filefrag -v "$TESTDIR/file1" "$TESTDIR/file2"
+
+echo "Check scratch fs"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/805.out b/tests/xfs/805.out
new file mode 100644
index 0000000..d36ab27
--- /dev/null
+++ b/tests/xfs/805.out
@@ -0,0 +1,8 @@
+QA output created by 805
+Format and mount
+Create the original files
+CoW every other block
+Compare files
+673c759fb131ccf3336c4f8c549a497e  /opt/test-805/file1
+dc802351f6717547cbf4c951b294f952  /opt/test-805/file2
+Check scratch fs
diff --git a/tests/xfs/806 b/tests/xfs/806
new file mode 100755
index 0000000..5e96b8a
--- /dev/null
+++ b/tests/xfs/806
@@ -0,0 +1,89 @@
+#! /bin/bash
+# FS QA Test No. 806
+#
+# Try to ENOSPC while expanding the refcntbt by CoWing every other block
+# of a file that eats the whole AG.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs -d agsize=$((32 * 1048576)) > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+BLKSZ="$(stat -f -c '%S' "$TESTDIR")"
+
+echo "Create the original files"
+SZ=$((48 * 1048576))
+NR=$((SZ / BLKSZ))
+_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 0 $SZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || echo "file1 and file2 do not match"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "CoW every other block"
+seq 1 2 $NR | while read f; do
+	_pwrite_byte 0x62 $((f * BLKSZ)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+	_pwrite_byte 0x62 $((f * BLKSZ)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || echo "file1 and file2 must not match"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "Check scratch fs"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/806.out b/tests/xfs/806.out
new file mode 100644
index 0000000..be89ea0
--- /dev/null
+++ b/tests/xfs/806.out
@@ -0,0 +1,7 @@
+QA output created by 806
+Format and mount
+Create the original files
+Compare files
+CoW every other block
+Compare files
+Check scratch fs
diff --git a/tests/xfs/group b/tests/xfs/group
index 9884329..b654005 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -226,3 +226,5 @@
 303 auto quick quota
 304 auto quick quota
 305 auto quota
+805 auto quick clone
+806 auto quick clone

[PATCH 07/11] reflink: test ENOSPC when expanding btrees during reflink operations

[Darrick J. Wong]

See what happens when we ENOSPC while growing a btree on behalf of
some reflink operation.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/xfs/805     |   82 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/805.out |    8 +++++
 tests/xfs/806     |   89 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/806.out |    7 ++++
 tests/xfs/group   |    2 +
 5 files changed, 188 insertions(+)
 create mode 100755 tests/xfs/805
 create mode 100644 tests/xfs/805.out
 create mode 100755 tests/xfs/806
 create mode 100644 tests/xfs/806.out


diff --git a/tests/xfs/805 b/tests/xfs/805
new file mode 100755
index 0000000..17a7743
--- /dev/null
+++ b/tests/xfs/805
@@ -0,0 +1,82 @@
+#! /bin/bash
+# FS QA Test No. 806
+#
+# Try to ENOSPC while expanding the refcntbt by CoWing every block
+# of a file that eats the whole AG.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs -d agsize=$((32 * 1048576)) > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+BLKSZ="$(stat -f "$TESTDIR" -c '%S')"
+
+echo "Create the original files"
+SZ=$((48 * 1048576))
+NR=$((SZ / BLKSZ))
+_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "CoW every other block"
+_pwrite_byte 0x62 0 $SZ "$TESTDIR/file1" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+#filefrag -v "$TESTDIR/file1" "$TESTDIR/file2"
+
+echo "Check scratch fs"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/805.out b/tests/xfs/805.out
new file mode 100644
index 0000000..d36ab27
--- /dev/null
+++ b/tests/xfs/805.out
@@ -0,0 +1,8 @@
+QA output created by 805
+Format and mount
+Create the original files
+CoW every other block
+Compare files
+673c759fb131ccf3336c4f8c549a497e  /opt/test-805/file1
+dc802351f6717547cbf4c951b294f952  /opt/test-805/file2
+Check scratch fs
diff --git a/tests/xfs/806 b/tests/xfs/806
new file mode 100755
index 0000000..5e96b8a
--- /dev/null
+++ b/tests/xfs/806
@@ -0,0 +1,89 @@
+#! /bin/bash
+# FS QA Test No. 806
+#
+# Try to ENOSPC while expanding the refcntbt by CoWing every other block
+# of a file that eats the whole AG.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs -d agsize=$((32 * 1048576)) > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+BLKSZ="$(stat -f -c '%S' "$TESTDIR")"
+
+echo "Create the original files"
+SZ=$((48 * 1048576))
+NR=$((SZ / BLKSZ))
+_pwrite_byte 0x61 0 $SZ "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 0 $SZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || echo "file1 and file2 do not match"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "CoW every other block"
+seq 1 2 $NR | while read f; do
+	_pwrite_byte 0x62 $((f * BLKSZ)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+	_pwrite_byte 0x62 $((f * BLKSZ)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || echo "file1 and file2 must not match"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+
+echo "Check scratch fs"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/806.out b/tests/xfs/806.out
new file mode 100644
index 0000000..be89ea0
--- /dev/null
+++ b/tests/xfs/806.out
@@ -0,0 +1,7 @@
+QA output created by 806
+Format and mount
+Create the original files
+Compare files
+CoW every other block
+Compare files
+Check scratch fs
diff --git a/tests/xfs/group b/tests/xfs/group
index 9884329..b654005 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -226,3 +226,5 @@
 303 auto quick quota
 304 auto quick quota
 305 auto quota
+805 auto quick clone
+806 auto quick clone

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

[PATCH 08/11] reflink: more CoW tests for reflink and dedupe

[Darrick J. Wong]

These tests examine the behavior of advanced and tricky copy on write
situations.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/851     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/851.out |   15 +++++
 tests/generic/852     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/852.out |   15 +++++
 tests/generic/853     |  146 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/853.out |   15 +++++
 tests/generic/854     |  146 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/854.out |   15 +++++
 tests/generic/855     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/855.out |   13 ++++
 tests/generic/856     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/856.out |   13 ++++
 tests/generic/857     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/857.out |   13 ++++
 tests/generic/858     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/858.out |   13 ++++
 tests/generic/859     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/859.out |   13 ++++
 tests/generic/860     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/860.out |   13 ++++
 tests/generic/861     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/861.out |   13 ++++
 tests/generic/862     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/862.out |   13 ++++
 tests/generic/863     |  125 ++++++++++++++++++++++++++++++++++++++++++
 tests/generic/863.out |   13 ++++
 tests/generic/864     |  125 ++++++++++++++++++++++++++++++++++++++++++
 tests/generic/864.out |   13 ++++
 tests/generic/865     |   86 +++++++++++++++++++++++++++++
 tests/generic/865.out |    9 +++
 tests/generic/866     |   86 +++++++++++++++++++++++++++++
 tests/generic/866.out |   13 ++++
 tests/generic/867     |   86 +++++++++++++++++++++++++++++
 tests/generic/867.out |   13 ++++
 tests/generic/group   |   17 ++++++
 35 files changed, 2022 insertions(+)
 create mode 100755 tests/generic/851
 create mode 100644 tests/generic/851.out
 create mode 100755 tests/generic/852
 create mode 100644 tests/generic/852.out
 create mode 100755 tests/generic/853
 create mode 100644 tests/generic/853.out
 create mode 100755 tests/generic/854
 create mode 100644 tests/generic/854.out
 create mode 100755 tests/generic/855
 create mode 100644 tests/generic/855.out
 create mode 100755 tests/generic/856
 create mode 100644 tests/generic/856.out
 create mode 100755 tests/generic/857
 create mode 100644 tests/generic/857.out
 create mode 100755 tests/generic/858
 create mode 100644 tests/generic/858.out
 create mode 100755 tests/generic/859
 create mode 100644 tests/generic/859.out
 create mode 100755 tests/generic/860
 create mode 100644 tests/generic/860.out
 create mode 100755 tests/generic/861
 create mode 100644 tests/generic/861.out
 create mode 100755 tests/generic/862
 create mode 100644 tests/generic/862.out
 create mode 100755 tests/generic/863
 create mode 100644 tests/generic/863.out
 create mode 100755 tests/generic/864
 create mode 100644 tests/generic/864.out
 create mode 100755 tests/generic/865
 create mode 100644 tests/generic/865.out
 create mode 100755 tests/generic/866
 create mode 100644 tests/generic/866.out
 create mode 100755 tests/generic/867
 create mode 100644 tests/generic/867.out


diff --git a/tests/generic/851 b/tests/generic/851
new file mode 100755
index 0000000..62db9a4
--- /dev/null
+++ b/tests/generic/851
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 851
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - directio CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/851.out b/tests/generic/851.out
new file mode 100644
index 0000000..8ca4a05
--- /dev/null
+++ b/tests/generic/851.out
@@ -0,0 +1,15 @@
+QA output created by 851
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-851/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-851/file2
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-851/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-851/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-851/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-851/file2
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-851/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-851/file3.chk
+Check for damage
diff --git a/tests/generic/852 b/tests/generic/852
new file mode 100755
index 0000000..c48ec16
--- /dev/null
+++ b/tests/generic/852
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 852
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/852.out b/tests/generic/852.out
new file mode 100644
index 0000000..02b5854
--- /dev/null
+++ b/tests/generic/852.out
@@ -0,0 +1,15 @@
+QA output created by 852
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-852/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-852/file2
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-852/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-852/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-852/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-852/file2
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-852/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-852/file3.chk
+Check for damage
diff --git a/tests/generic/853 b/tests/generic/853
new file mode 100755
index 0000000..433c1ee
--- /dev/null
+++ b/tests/generic/853
@@ -0,0 +1,146 @@
+#! /bin/bash
+# FS QA Test No. 853
+#
+# Ensuring that copy on write in buffered mode works when free space
+# is heavily fragmented.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - Try to fragment the free space by allocating a huge file and
+#     punching out every other block.
+#   - CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+#    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+test "$FSTYP" = "btrfs" && _notrun "Can't fragment free space on btrfs."
+
+rm -f "$seqres.full"
+
+_fragment_freesp()
+{
+	file="$1"
+
+	# consume nearly all available space (leave ~1MB)
+	avail=`_get_available_space $SCRATCH_MNT`
+	echo "$avail bytes left"
+	filesize=$((avail - 1048576))
+	$XFS_IO_PROG -fc "truncate $filesize" "$file"
+
+	chunks=20
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 1 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / 20"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	chunks=100
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 80 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / $chunks"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	filesizemb=$((filesize / 1048576))
+	$XFS_IO_PROG -fc "falloc -k 0 ${filesizemb}m" "$file"
+
+	# Try again anyway
+	avail=`_get_available_space $SCRATCH_MNT`
+	$XFS_IO_PROG -fc "pwrite -S 0x65 0 $avail" "${file}.${i}"
+
+	# Punch out whatever we need
+	seq 1 $((NR * 4)) | while read f; do
+		$XFS_IO_PROG -f -c "fpunch $((f * 2 * BLKSZ)) $BLKSZ" "$file"
+	done
+}
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=1024
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+_fragment_freesp "$TESTDIR/bigfile" >> "$seqres.full" 2>&1
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW with multiple extents?"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/853.out b/tests/generic/853.out
new file mode 100644
index 0000000..06622de
--- /dev/null
+++ b/tests/generic/853.out
@@ -0,0 +1,15 @@
+QA output created by 853
+Format and mount
+Create the original files
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-853/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-853/file2
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-853/file3
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-853/file3.chk
+CoW with multiple extents?
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-853/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-853/file2
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-853/file3
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-853/file3.chk
+Check for damage
diff --git a/tests/generic/854 b/tests/generic/854
new file mode 100755
index 0000000..9776388
--- /dev/null
+++ b/tests/generic/854
@@ -0,0 +1,146 @@
+#! /bin/bash
+# FS QA Test No. 854
+#
+# Ensuring that copy on write in directio mode works when free space
+# is heavily fragmented.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - Try to fragment the free space by allocating a huge file and
+#     punching out every other block.
+#   - CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+#    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+test "$FSTYP" = "btrfs" && _notrun "Can't fragment free space on btrfs."
+
+rm -f "$seqres.full"
+
+_fragment_freesp()
+{
+	file="$1"
+
+	# consume nearly all available space (leave ~1MB)
+	avail=`_get_available_space $SCRATCH_MNT`
+	echo "$avail bytes left"
+	filesize=$((avail - 1048576))
+	$XFS_IO_PROG -fc "truncate $filesize" "$file"
+
+	chunks=20
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 1 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / 20"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	chunks=100
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 80 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / $chunks"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	filesizemb=$((filesize / 1048576))
+	$XFS_IO_PROG -fc "falloc -k 0 ${filesizemb}m" "$file"
+
+	# Try again anyway
+	avail=`_get_available_space $SCRATCH_MNT`
+	$XFS_IO_PROG -fc "pwrite -S 0x65 0 $avail" "${file}.${i}"
+
+	# Punch out whatever we need
+	seq 1 $((NR * 4)) | while read f; do
+		$XFS_IO_PROG -f -c "fpunch $((f * 2 * BLKSZ)) $BLKSZ" "$file"
+	done
+}
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=1024
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+_fragment_freesp "$TESTDIR/bigfile" >> "$seqres.full" 2>&1
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW with multiple extents?"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/854.out b/tests/generic/854.out
new file mode 100644
index 0000000..a96c8c4
--- /dev/null
+++ b/tests/generic/854.out
@@ -0,0 +1,15 @@
+QA output created by 854
+Format and mount
+Create the original files
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-854/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-854/file2
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-854/file3
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-854/file3.chk
+CoW with multiple extents?
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-854/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-854/file2
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-854/file3
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-854/file3.chk
+Check for damage
diff --git a/tests/generic/855 b/tests/generic/855
new file mode 100755
index 0000000..017be2e
--- /dev/null
+++ b/tests/generic/855
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 855
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file and fallocate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "falloc 0 $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/855.out b/tests/generic/855.out
new file mode 100644
index 0000000..ca3aaab
--- /dev/null
+++ b/tests/generic/855.out
@@ -0,0 +1,13 @@
+QA output created by 855
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-855/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-855/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-855/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-855/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-855/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-855/file3.chk
+Check for damage
diff --git a/tests/generic/856 b/tests/generic/856
new file mode 100755
index 0000000..dfaa491
--- /dev/null
+++ b/tests/generic/856
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 856
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file and fallocate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "falloc 0 $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/856.out b/tests/generic/856.out
new file mode 100644
index 0000000..41675db
--- /dev/null
+++ b/tests/generic/856.out
@@ -0,0 +1,13 @@
+QA output created by 856
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-856/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-856/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-856/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-856/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-856/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-856/file3.chk
+Check for damage
diff --git a/tests/generic/857 b/tests/generic/857
new file mode 100755
index 0000000..ddf7c50
--- /dev/null
+++ b/tests/generic/857
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 857
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some holes, some not.
+#   - Create a file and truncate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/857.out b/tests/generic/857.out
new file mode 100644
index 0000000..b82e365
--- /dev/null
+++ b/tests/generic/857.out
@@ -0,0 +1,13 @@
+QA output created by 857
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-857/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-857/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-857/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-857/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-857/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-857/file3.chk
+Check for damage
diff --git a/tests/generic/858 b/tests/generic/858
new file mode 100755
index 0000000..0a341d0
--- /dev/null
+++ b/tests/generic/858
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 858
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some holes, some not.
+#   - Create a file and truncate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/858.out b/tests/generic/858.out
new file mode 100644
index 0000000..171fb4b
--- /dev/null
+++ b/tests/generic/858.out
@@ -0,0 +1,13 @@
+QA output created by 858
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-858/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-858/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-858/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-858/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-858/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-858/file3.chk
+Check for damage
diff --git a/tests/generic/859 b/tests/generic/859
new file mode 100755
index 0000000..0929c2a
--- /dev/null
+++ b/tests/generic/859
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 859
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some delalloc, some not.
+#   - Create a file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - Buffered write the even blocks of the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+seq 1 2 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/859.out b/tests/generic/859.out
new file mode 100644
index 0000000..120da3c
--- /dev/null
+++ b/tests/generic/859.out
@@ -0,0 +1,13 @@
+QA output created by 859
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-859/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-859/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-859/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-859/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-859/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-859/file3.chk
+Check for damage
diff --git a/tests/generic/860 b/tests/generic/860
new file mode 100755
index 0000000..432f5ad
--- /dev/null
+++ b/tests/generic/860
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 860
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some delalloc, some not.
+#   - Create a file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - Buffered write the even blocks of the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+seq 1 2 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/860.out b/tests/generic/860.out
new file mode 100644
index 0000000..69b3a96
--- /dev/null
+++ b/tests/generic/860.out
@@ -0,0 +1,13 @@
+QA output created by 860
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-860/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-860/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-860/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-860/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-860/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-860/file3.chk
+Check for damage
diff --git a/tests/generic/861 b/tests/generic/861
new file mode 100755
index 0000000..c011ab7
--- /dev/null
+++ b/tests/generic/861
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 861
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create two files.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/861.out b/tests/generic/861.out
new file mode 100644
index 0000000..70154ae
--- /dev/null
+++ b/tests/generic/861.out
@@ -0,0 +1,13 @@
+QA output created by 861
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-861/file1
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-861/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-861/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-861/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-861/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-861/file3.chk
+Check for damage
diff --git a/tests/generic/862 b/tests/generic/862
new file mode 100755
index 0000000..034dfb1
--- /dev/null
+++ b/tests/generic/862
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 862
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create two files.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/862.out b/tests/generic/862.out
new file mode 100644
index 0000000..ad1dc8e
--- /dev/null
+++ b/tests/generic/862.out
@@ -0,0 +1,13 @@
+QA output created by 862
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-862/file1
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-862/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-862/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-862/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-862/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-862/file3.chk
+Check for damage
diff --git a/tests/generic/863 b/tests/generic/863
new file mode 100755
index 0000000..4aa2a42
--- /dev/null
+++ b/tests/generic/863
@@ -0,0 +1,125 @@
+#! /bin/bash
+# FS QA Test No. 863
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file with the following repeating sequence of blocks:
+#     1. reflinked
+#     2. unwritten
+#     3. hole
+#     4. regular block
+#     5. delalloc
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+# 0 blocks are reflinked
+seq 0 5 $NR | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 1 blocks are unwritten
+seq 1 5 $NR | while read f; do
+	$XFS_IO_PROG -f -c "falloc $((BLKSZ * f)) $BLKSZ" "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 2 blocks are holes
+seq 2 5 $NR | while read f; do
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# 3 blocks are regular
+seq 3 5 $NR | while read f; do
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+# 4 blocks are delalloc (do later)
+seq 4 5 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# now cow
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/863.out b/tests/generic/863.out
new file mode 100644
index 0000000..7cd4b2e
--- /dev/null
+++ b/tests/generic/863.out
@@ -0,0 +1,13 @@
+QA output created by 863
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-863/file1
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-863/file3
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-863/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-863/file1
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-863/file3
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-863/file3.chk
+Check for damage
diff --git a/tests/generic/864 b/tests/generic/864
new file mode 100755
index 0000000..899cf90
--- /dev/null
+++ b/tests/generic/864
@@ -0,0 +1,125 @@
+#! /bin/bash
+# FS QA Test No. 864
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file with the following repeating sequence of blocks:
+#     1. reflinked
+#     2. unwritten
+#     3. hole
+#     4. regular block
+#     5. delalloc
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+# 0 blocks are reflinked
+seq 0 5 $NR | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 1 blocks are unwritten
+seq 1 5 $NR | while read f; do
+	$XFS_IO_PROG -f -c "falloc $((BLKSZ * f)) $BLKSZ" "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 2 blocks are holes
+seq 2 5 $NR | while read f; do
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# 3 blocks are regular
+seq 3 5 $NR | while read f; do
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+# 4 blocks are delalloc (do later)
+seq 4 5 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# now cow
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/864.out b/tests/generic/864.out
new file mode 100644
index 0000000..b62ab33
--- /dev/null
+++ b/tests/generic/864.out
@@ -0,0 +1,13 @@
+QA output created by 864
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-864/file1
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-864/file3
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-864/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-864/file1
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-864/file3
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-864/file3.chk
+Check for damage
diff --git a/tests/generic/865 b/tests/generic/865
new file mode 100755
index 0000000..1527971
--- /dev/null
+++ b/tests/generic/865
@@ -0,0 +1,86 @@
+#! /bin/bash
+# FS QA Test No. 865
+#
+# See what happens if we dirty a lot of pages via CoW and immediately
+# unlink the file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+rm "$TESTDIR/file3"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/865.out b/tests/generic/865.out
new file mode 100644
index 0000000..c4837a1
--- /dev/null
+++ b/tests/generic/865.out
@@ -0,0 +1,9 @@
+QA output created by 865
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-865/file1
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-865/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-865/file3.chk
+CoW and unmount
+Check for damage
diff --git a/tests/generic/866 b/tests/generic/866
new file mode 100755
index 0000000..3ebfb91
--- /dev/null
+++ b/tests/generic/866
@@ -0,0 +1,86 @@
+#! /bin/bash
+# FS QA Test No. 866
+#
+# See what happens if we CoW across not-block-aligned EOF.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) 17" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) 17" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/866.out b/tests/generic/866.out
new file mode 100644
index 0000000..7782c58
--- /dev/null
+++ b/tests/generic/866.out
@@ -0,0 +1,13 @@
+QA output created by 866
+Format and mount
+Create the original files
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file1
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file2
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file2.chk
+CoW and unmount
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file1
+7cd112044b63b2c979f45e7c1e7cc85f  SCRATCH_MNT/test-866/file2
+7cd112044b63b2c979f45e7c1e7cc85f  SCRATCH_MNT/test-866/file2.chk
+Check for damage
diff --git a/tests/generic/867 b/tests/generic/867
new file mode 100755
index 0000000..87f220c
--- /dev/null
+++ b/tests/generic/867
@@ -0,0 +1,86 @@
+#! /bin/bash
+# FS QA Test No. 867
+#
+# See what happens if we DIO CoW across not-block-aligned EOF.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $BLKSZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/867.out b/tests/generic/867.out
new file mode 100644
index 0000000..9489e93
--- /dev/null
+++ b/tests/generic/867.out
@@ -0,0 +1,13 @@
+QA output created by 867
+Format and mount
+Create the original files
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file1
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file2
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file2.chk
+CoW and unmount
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file1
+227f44bb2dcf251ebf0217edaeb1e365  SCRATCH_MNT/test-867/file2
+227f44bb2dcf251ebf0217edaeb1e365  SCRATCH_MNT/test-867/file2.chk
+Check for damage
diff --git a/tests/generic/group b/tests/generic/group
index bf33541..ea4901b 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -262,3 +262,20 @@
 848 auto quick clone
 849 auto quick clone
 850 auto quick clone
+851 auto quick clone
+852 auto quick clone
+853 auto quick clone
+854 auto quick clone
+855 auto quick clone
+856 auto quick clone
+857 auto quick clone
+858 auto quick clone
+859 auto quick clone
+860 auto quick clone
+861 auto quick clone
+862 auto quick clone
+863 auto quick clone
+864 auto quick clone
+865 auto quick clone
+866 auto quick clone
+867 auto quick clone

[PATCH 08/11] reflink: more CoW tests for reflink and dedupe

[Darrick J. Wong]

These tests examine the behavior of advanced and tricky copy on write
situations.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/851     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/851.out |   15 +++++
 tests/generic/852     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/852.out |   15 +++++
 tests/generic/853     |  146 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/853.out |   15 +++++
 tests/generic/854     |  146 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/854.out |   15 +++++
 tests/generic/855     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/855.out |   13 ++++
 tests/generic/856     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/856.out |   13 ++++
 tests/generic/857     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/857.out |   13 ++++
 tests/generic/858     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/858.out |   13 ++++
 tests/generic/859     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/859.out |   13 ++++
 tests/generic/860     |  101 ++++++++++++++++++++++++++++++++++
 tests/generic/860.out |   13 ++++
 tests/generic/861     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/861.out |   13 ++++
 tests/generic/862     |   96 ++++++++++++++++++++++++++++++++
 tests/generic/862.out |   13 ++++
 tests/generic/863     |  125 ++++++++++++++++++++++++++++++++++++++++++
 tests/generic/863.out |   13 ++++
 tests/generic/864     |  125 ++++++++++++++++++++++++++++++++++++++++++
 tests/generic/864.out |   13 ++++
 tests/generic/865     |   86 +++++++++++++++++++++++++++++
 tests/generic/865.out |    9 +++
 tests/generic/866     |   86 +++++++++++++++++++++++++++++
 tests/generic/866.out |   13 ++++
 tests/generic/867     |   86 +++++++++++++++++++++++++++++
 tests/generic/867.out |   13 ++++
 tests/generic/group   |   17 ++++++
 35 files changed, 2022 insertions(+)
 create mode 100755 tests/generic/851
 create mode 100644 tests/generic/851.out
 create mode 100755 tests/generic/852
 create mode 100644 tests/generic/852.out
 create mode 100755 tests/generic/853
 create mode 100644 tests/generic/853.out
 create mode 100755 tests/generic/854
 create mode 100644 tests/generic/854.out
 create mode 100755 tests/generic/855
 create mode 100644 tests/generic/855.out
 create mode 100755 tests/generic/856
 create mode 100644 tests/generic/856.out
 create mode 100755 tests/generic/857
 create mode 100644 tests/generic/857.out
 create mode 100755 tests/generic/858
 create mode 100644 tests/generic/858.out
 create mode 100755 tests/generic/859
 create mode 100644 tests/generic/859.out
 create mode 100755 tests/generic/860
 create mode 100644 tests/generic/860.out
 create mode 100755 tests/generic/861
 create mode 100644 tests/generic/861.out
 create mode 100755 tests/generic/862
 create mode 100644 tests/generic/862.out
 create mode 100755 tests/generic/863
 create mode 100644 tests/generic/863.out
 create mode 100755 tests/generic/864
 create mode 100644 tests/generic/864.out
 create mode 100755 tests/generic/865
 create mode 100644 tests/generic/865.out
 create mode 100755 tests/generic/866
 create mode 100644 tests/generic/866.out
 create mode 100755 tests/generic/867
 create mode 100644 tests/generic/867.out


diff --git a/tests/generic/851 b/tests/generic/851
new file mode 100755
index 0000000..62db9a4
--- /dev/null
+++ b/tests/generic/851
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 851
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - directio CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/851.out b/tests/generic/851.out
new file mode 100644
index 0000000..8ca4a05
--- /dev/null
+++ b/tests/generic/851.out
@@ -0,0 +1,15 @@
+QA output created by 851
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-851/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-851/file2
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-851/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-851/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-851/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-851/file2
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-851/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-851/file3.chk
+Check for damage
diff --git a/tests/generic/852 b/tests/generic/852
new file mode 100755
index 0000000..c48ec16
--- /dev/null
+++ b/tests/generic/852
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 852
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/852.out b/tests/generic/852.out
new file mode 100644
index 0000000..02b5854
--- /dev/null
+++ b/tests/generic/852.out
@@ -0,0 +1,15 @@
+QA output created by 852
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-852/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-852/file2
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-852/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-852/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-852/file1
+b83f9394092e15bdcda585cd8e776dc6  SCRATCH_MNT/test-852/file2
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-852/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-852/file3.chk
+Check for damage
diff --git a/tests/generic/853 b/tests/generic/853
new file mode 100755
index 0000000..433c1ee
--- /dev/null
+++ b/tests/generic/853
@@ -0,0 +1,146 @@
+#! /bin/bash
+# FS QA Test No. 853
+#
+# Ensuring that copy on write in buffered mode works when free space
+# is heavily fragmented.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - Try to fragment the free space by allocating a huge file and
+#     punching out every other block.
+#   - CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+#    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+test "$FSTYP" = "btrfs" && _notrun "Can't fragment free space on btrfs."
+
+rm -f "$seqres.full"
+
+_fragment_freesp()
+{
+	file="$1"
+
+	# consume nearly all available space (leave ~1MB)
+	avail=`_get_available_space $SCRATCH_MNT`
+	echo "$avail bytes left"
+	filesize=$((avail - 1048576))
+	$XFS_IO_PROG -fc "truncate $filesize" "$file"
+
+	chunks=20
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 1 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / 20"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	chunks=100
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 80 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / $chunks"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	filesizemb=$((filesize / 1048576))
+	$XFS_IO_PROG -fc "falloc -k 0 ${filesizemb}m" "$file"
+
+	# Try again anyway
+	avail=`_get_available_space $SCRATCH_MNT`
+	$XFS_IO_PROG -fc "pwrite -S 0x65 0 $avail" "${file}.${i}"
+
+	# Punch out whatever we need
+	seq 1 $((NR * 4)) | while read f; do
+		$XFS_IO_PROG -f -c "fpunch $((f * 2 * BLKSZ)) $BLKSZ" "$file"
+	done
+}
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=1024
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+_fragment_freesp "$TESTDIR/bigfile" >> "$seqres.full" 2>&1
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW with multiple extents?"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/853.out b/tests/generic/853.out
new file mode 100644
index 0000000..06622de
--- /dev/null
+++ b/tests/generic/853.out
@@ -0,0 +1,15 @@
+QA output created by 853
+Format and mount
+Create the original files
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-853/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-853/file2
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-853/file3
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-853/file3.chk
+CoW with multiple extents?
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-853/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-853/file2
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-853/file3
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-853/file3.chk
+Check for damage
diff --git a/tests/generic/854 b/tests/generic/854
new file mode 100755
index 0000000..9776388
--- /dev/null
+++ b/tests/generic/854
@@ -0,0 +1,146 @@
+#! /bin/bash
+# FS QA Test No. 854
+#
+# Ensuring that copy on write in directio mode works when free space
+# is heavily fragmented.
+#   - Create two files
+#   - Reflink the odd blocks of the first file into a third file.
+#   - Reflink the even blocks of the second file into the third file.
+#   - Try to fragment the free space by allocating a huge file and
+#     punching out every other block.
+#   - CoW across the halfway mark.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+#    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+test "$FSTYP" = "btrfs" && _notrun "Can't fragment free space on btrfs."
+
+rm -f "$seqres.full"
+
+_fragment_freesp()
+{
+	file="$1"
+
+	# consume nearly all available space (leave ~1MB)
+	avail=`_get_available_space $SCRATCH_MNT`
+	echo "$avail bytes left"
+	filesize=$((avail - 1048576))
+	$XFS_IO_PROG -fc "truncate $filesize" "$file"
+
+	chunks=20
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 1 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / 20"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	chunks=100
+	chunksizemb=$((filesize / chunks / 1048576))
+	seq 80 $chunks | while read f; do
+		echo "$((f * chunksizemb)) file size $f / $chunks"
+		$XFS_IO_PROG -fc "falloc -k $(( (f - 1) * chunksizemb))m ${chunksizemb}m" "$file"
+	done
+
+	filesizemb=$((filesize / 1048576))
+	$XFS_IO_PROG -fc "falloc -k 0 ${filesizemb}m" "$file"
+
+	# Try again anyway
+	avail=`_get_available_space $SCRATCH_MNT`
+	$XFS_IO_PROG -fc "pwrite -S 0x65 0 $avail" "${file}.${i}"
+
+	# Punch out whatever we need
+	seq 1 $((NR * 4)) | while read f; do
+		$XFS_IO_PROG -f -c "fpunch $((f * 2 * BLKSZ)) $BLKSZ" "$file"
+	done
+}
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=1024
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+seq 1 2 $NR | while read f; do
+	_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+_fragment_freesp "$TESTDIR/bigfile" >> "$seqres.full" 2>&1
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW with multiple extents?"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/854.out b/tests/generic/854.out
new file mode 100644
index 0000000..a96c8c4
--- /dev/null
+++ b/tests/generic/854.out
@@ -0,0 +1,15 @@
+QA output created by 854
+Format and mount
+Create the original files
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-854/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-854/file2
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-854/file3
+8d9ea4925db533da10a45d2919d8d2d9  SCRATCH_MNT/test-854/file3.chk
+CoW with multiple extents?
+Compare files
+6488f52f2d2351fa5ca1f6410df8684d  SCRATCH_MNT/test-854/file1
+35219c511215d00a857243965ea5ed9c  SCRATCH_MNT/test-854/file2
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-854/file3
+1801718b8daeb8d3ad4900bd9137b3e8  SCRATCH_MNT/test-854/file3.chk
+Check for damage
diff --git a/tests/generic/855 b/tests/generic/855
new file mode 100755
index 0000000..017be2e
--- /dev/null
+++ b/tests/generic/855
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 855
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file and fallocate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "falloc 0 $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/855.out b/tests/generic/855.out
new file mode 100644
index 0000000..ca3aaab
--- /dev/null
+++ b/tests/generic/855.out
@@ -0,0 +1,13 @@
+QA output created by 855
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-855/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-855/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-855/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-855/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-855/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-855/file3.chk
+Check for damage
diff --git a/tests/generic/856 b/tests/generic/856
new file mode 100755
index 0000000..dfaa491
--- /dev/null
+++ b/tests/generic/856
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 856
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file and fallocate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "falloc 0 $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/856.out b/tests/generic/856.out
new file mode 100644
index 0000000..41675db
--- /dev/null
+++ b/tests/generic/856.out
@@ -0,0 +1,13 @@
+QA output created by 856
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-856/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-856/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-856/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-856/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-856/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-856/file3.chk
+Check for damage
diff --git a/tests/generic/857 b/tests/generic/857
new file mode 100755
index 0000000..ddf7c50
--- /dev/null
+++ b/tests/generic/857
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 857
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some holes, some not.
+#   - Create a file and truncate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/857.out b/tests/generic/857.out
new file mode 100644
index 0000000..b82e365
--- /dev/null
+++ b/tests/generic/857.out
@@ -0,0 +1,13 @@
+QA output created by 857
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-857/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-857/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-857/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-857/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-857/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-857/file3.chk
+Check for damage
diff --git a/tests/generic/858 b/tests/generic/858
new file mode 100755
index 0000000..0a341d0
--- /dev/null
+++ b/tests/generic/858
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 858
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some holes, some not.
+#   - Create a file and truncate a second file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/858.out b/tests/generic/858.out
new file mode 100644
index 0000000..171fb4b
--- /dev/null
+++ b/tests/generic/858.out
@@ -0,0 +1,13 @@
+QA output created by 858
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-858/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-858/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-858/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-858/file1
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-858/file3
+09101629908f9bdd5d178e7ce20bb1bb  SCRATCH_MNT/test-858/file3.chk
+Check for damage
diff --git a/tests/generic/859 b/tests/generic/859
new file mode 100755
index 0000000..0929c2a
--- /dev/null
+++ b/tests/generic/859
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 859
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some delalloc, some not.
+#   - Create a file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - Buffered write the even blocks of the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+seq 1 2 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/859.out b/tests/generic/859.out
new file mode 100644
index 0000000..120da3c
--- /dev/null
+++ b/tests/generic/859.out
@@ -0,0 +1,13 @@
+QA output created by 859
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-859/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-859/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-859/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-859/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-859/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-859/file3.chk
+Check for damage
diff --git a/tests/generic/860 b/tests/generic/860
new file mode 100755
index 0000000..432f5ad
--- /dev/null
+++ b/tests/generic/860
@@ -0,0 +1,101 @@
+#! /bin/bash
+# FS QA Test No. 860
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some delalloc, some not.
+#   - Create a file.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - Buffered write the even blocks of the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+seq 1 2 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/860.out b/tests/generic/860.out
new file mode 100644
index 0000000..69b3a96
--- /dev/null
+++ b/tests/generic/860.out
@@ -0,0 +1,13 @@
+QA output created by 860
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-860/file1
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-860/file3
+fa50dba51826899c372464a153cb2117  SCRATCH_MNT/test-860/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-860/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-860/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-860/file3.chk
+Check for damage
diff --git a/tests/generic/861 b/tests/generic/861
new file mode 100755
index 0000000..c011ab7
--- /dev/null
+++ b/tests/generic/861
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 861
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create two files.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/861.out b/tests/generic/861.out
new file mode 100644
index 0000000..70154ae
--- /dev/null
+++ b/tests/generic/861.out
@@ -0,0 +1,13 @@
+QA output created by 861
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-861/file1
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-861/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-861/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-861/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-861/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-861/file3.chk
+Check for damage
diff --git a/tests/generic/862 b/tests/generic/862
new file mode 100755
index 0000000..034dfb1
--- /dev/null
+++ b/tests/generic/862
@@ -0,0 +1,96 @@
+#! /bin/bash
+# FS QA Test No. 862
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create two files.
+#   - Reflink the odd blocks of the first file into the second file.
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW across the transition"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/862.out b/tests/generic/862.out
new file mode 100644
index 0000000..ad1dc8e
--- /dev/null
+++ b/tests/generic/862.out
@@ -0,0 +1,13 @@
+QA output created by 862
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-862/file1
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-862/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-862/file3.chk
+CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-862/file1
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-862/file3
+55968a95dfc0120df4e8485576514320  SCRATCH_MNT/test-862/file3.chk
+Check for damage
diff --git a/tests/generic/863 b/tests/generic/863
new file mode 100755
index 0000000..4aa2a42
--- /dev/null
+++ b/tests/generic/863
@@ -0,0 +1,125 @@
+#! /bin/bash
+# FS QA Test No. 863
+#
+# Ensuring that copy on write in direct-io mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file with the following repeating sequence of blocks:
+#     1. reflinked
+#     2. unwritten
+#     3. hole
+#     4. regular block
+#     5. delalloc
+#   - directio CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+# 0 blocks are reflinked
+seq 0 5 $NR | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 1 blocks are unwritten
+seq 1 5 $NR | while read f; do
+	$XFS_IO_PROG -f -c "falloc $((BLKSZ * f)) $BLKSZ" "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 2 blocks are holes
+seq 2 5 $NR | while read f; do
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# 3 blocks are regular
+seq 3 5 $NR | while read f; do
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+# 4 blocks are delalloc (do later)
+seq 4 5 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# now cow
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/863.out b/tests/generic/863.out
new file mode 100644
index 0000000..7cd4b2e
--- /dev/null
+++ b/tests/generic/863.out
@@ -0,0 +1,13 @@
+QA output created by 863
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-863/file1
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-863/file3
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-863/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-863/file1
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-863/file3
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-863/file3.chk
+Check for damage
diff --git a/tests/generic/864 b/tests/generic/864
new file mode 100755
index 0000000..899cf90
--- /dev/null
+++ b/tests/generic/864
@@ -0,0 +1,125 @@
+#! /bin/bash
+# FS QA Test No. 864
+#
+# Ensuring that copy on write in buffered mode works when the CoW
+# range originally covers multiple extents, some unwritten, some not.
+#   - Create a file with the following repeating sequence of blocks:
+#     1. reflinked
+#     2. unwritten
+#     3. hole
+#     4. regular block
+#     5. delalloc
+#   - CoW across the halfway mark, starting with the unwritten extent.
+#   - Check that the files are now different where we say they're different.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fpunch"
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
+# 0 blocks are reflinked
+seq 0 5 $NR | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 1 blocks are unwritten
+seq 1 5 $NR | while read f; do
+	$XFS_IO_PROG -f -c "falloc $((BLKSZ * f)) $BLKSZ" "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+# 2 blocks are holes
+seq 2 5 $NR | while read f; do
+	_pwrite_byte 0x00 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# 3 blocks are regular
+seq 3 5 $NR | while read f; do
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x71 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+sync
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "directio CoW across the transition"
+# 4 blocks are delalloc (do later)
+seq 4 5 $NR | while read f; do
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3" >> "$seqres.full"
+	_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+# now cow
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/864.out b/tests/generic/864.out
new file mode 100644
index 0000000..b62ab33
--- /dev/null
+++ b/tests/generic/864.out
@@ -0,0 +1,13 @@
+QA output created by 864
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-864/file1
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-864/file3
+6366fd359371414186688a0ef6988893  SCRATCH_MNT/test-864/file3.chk
+directio CoW across the transition
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-864/file1
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-864/file3
+36f6b5317a9a921fc91175390ccf7f69  SCRATCH_MNT/test-864/file3.chk
+Check for damage
diff --git a/tests/generic/865 b/tests/generic/865
new file mode 100755
index 0000000..1527971
--- /dev/null
+++ b/tests/generic/865
@@ -0,0 +1,86 @@
+#! /bin/bash
+# FS QA Test No. 865
+#
+# See what happens if we dirty a lot of pages via CoW and immediately
+# unlink the file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+NR=64
+_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3" >> "$seqres.full"
+_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$seqres.full"
+seq 0 2 $((NR-1)) | while read f; do
+	_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file3" | _filter_scratch
+md5sum "$TESTDIR/file3.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2))" "$TESTDIR/file3" >> "$seqres.full"
+rm "$TESTDIR/file3"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/865.out b/tests/generic/865.out
new file mode 100644
index 0000000..c4837a1
--- /dev/null
+++ b/tests/generic/865.out
@@ -0,0 +1,9 @@
+QA output created by 865
+Format and mount
+Create the original files
+Compare files
+bdbcf02ee0aa977795a79d25fcfdccb1  SCRATCH_MNT/test-865/file1
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-865/file3
+d3959a68638c50af07f0258e032cb554  SCRATCH_MNT/test-865/file3.chk
+CoW and unmount
+Check for damage
diff --git a/tests/generic/866 b/tests/generic/866
new file mode 100755
index 0000000..3ebfb91
--- /dev/null
+++ b/tests/generic/866
@@ -0,0 +1,86 @@
+#! /bin/bash
+# FS QA Test No. 866
+#
+# See what happens if we CoW across not-block-aligned EOF.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) 17" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) 17" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/866.out b/tests/generic/866.out
new file mode 100644
index 0000000..7782c58
--- /dev/null
+++ b/tests/generic/866.out
@@ -0,0 +1,13 @@
+QA output created by 866
+Format and mount
+Create the original files
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file1
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file2
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file2.chk
+CoW and unmount
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-866/file1
+7cd112044b63b2c979f45e7c1e7cc85f  SCRATCH_MNT/test-866/file2
+7cd112044b63b2c979f45e7c1e7cc85f  SCRATCH_MNT/test-866/file2.chk
+Check for damage
diff --git a/tests/generic/867 b/tests/generic/867
new file mode 100755
index 0000000..87f220c
--- /dev/null
+++ b/tests/generic/867
@@ -0,0 +1,86 @@
+#! /bin/bash
+# FS QA Test No. 867
+#
+# See what happens if we DIO CoW across not-block-aligned EOF.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_pwrite_byte 0x61 0 $((BLKSZ + 17)) "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $BLKSZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/867.out b/tests/generic/867.out
new file mode 100644
index 0000000..9489e93
--- /dev/null
+++ b/tests/generic/867.out
@@ -0,0 +1,13 @@
+QA output created by 867
+Format and mount
+Create the original files
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file1
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file2
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file2.chk
+CoW and unmount
+Compare files
+75f550706b7d54e6ae59a8220b532285  SCRATCH_MNT/test-867/file1
+227f44bb2dcf251ebf0217edaeb1e365  SCRATCH_MNT/test-867/file2
+227f44bb2dcf251ebf0217edaeb1e365  SCRATCH_MNT/test-867/file2.chk
+Check for damage
diff --git a/tests/generic/group b/tests/generic/group
index bf33541..ea4901b 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -262,3 +262,20 @@
 848 auto quick clone
 849 auto quick clone
 850 auto quick clone
+851 auto quick clone
+852 auto quick clone
+853 auto quick clone
+854 auto quick clone
+855 auto quick clone
+856 auto quick clone
+857 auto quick clone
+858 auto quick clone
+859 auto quick clone
+860 auto quick clone
+861 auto quick clone
+862 auto quick clone
+863 auto quick clone
+864 auto quick clone
+865 auto quick clone
+866 auto quick clone
+867 auto quick clone

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

[PATCH 09/11] reflink: test CoW with blocksize < pagesize

[Darrick J. Wong]

Test CoW operations when blocksize < pagesize and the only reflink
block is in the middle of the page.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 common/reflink        |   30 +++++++++
 tests/generic/868     |  102 +++++++++++++++++++++++++++++++
 tests/generic/868.out |    7 ++
 tests/generic/869     |  102 +++++++++++++++++++++++++++++++
 tests/generic/869.out |    7 ++
 tests/generic/870     |  103 +++++++++++++++++++++++++++++++
 tests/generic/870.out |    7 ++
 tests/generic/871     |  103 +++++++++++++++++++++++++++++++
 tests/generic/871.out |    7 ++
 tests/generic/872     |   97 +++++++++++++++++++++++++++++
 tests/generic/872.out |    7 ++
 tests/generic/873     |   97 +++++++++++++++++++++++++++++
 tests/generic/873.out |    7 ++
 tests/generic/874     |  103 +++++++++++++++++++++++++++++++
 tests/generic/874.out |    7 ++
 tests/generic/875     |  103 +++++++++++++++++++++++++++++++
 tests/generic/875.out |    7 ++
 tests/generic/876     |  163 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/876.out |   83 +++++++++++++++++++++++++
 tests/generic/877     |  163 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/877.out |   83 +++++++++++++++++++++++++
 tests/generic/group   |   10 +++
 22 files changed, 1398 insertions(+)
 create mode 100755 tests/generic/868
 create mode 100644 tests/generic/868.out
 create mode 100755 tests/generic/869
 create mode 100644 tests/generic/869.out
 create mode 100755 tests/generic/870
 create mode 100644 tests/generic/870.out
 create mode 100755 tests/generic/871
 create mode 100644 tests/generic/871.out
 create mode 100755 tests/generic/872
 create mode 100644 tests/generic/872.out
 create mode 100755 tests/generic/873
 create mode 100644 tests/generic/873.out
 create mode 100755 tests/generic/874
 create mode 100644 tests/generic/874.out
 create mode 100755 tests/generic/875
 create mode 100644 tests/generic/875.out
 create mode 100755 tests/generic/876
 create mode 100644 tests/generic/876.out
 create mode 100755 tests/generic/877
 create mode 100644 tests/generic/877.out


diff --git a/common/reflink b/common/reflink
index eab7f66..de8e56d 100644
--- a/common/reflink
+++ b/common/reflink
@@ -183,3 +183,33 @@ _dedupe_range() {
 
 	"$XFS_IO_PROG" $xfs_io_args -f -c "dedupe $file1 $offset1 $offset2 $len" "$file2"
 }
+
+# Create fs of certain blocksize on scratch device
+# _scratch_mkfs_blocksized blocksize
+_scratch_mkfs_blocksized()
+{
+    blocksize=$1
+
+    re='^[0-9]+$'
+    if ! [[ $blocksize =~ $re ]] ; then
+        _notrun "error: _scratch_mkfs_sized: block size \"$blocksize\" not an integer."
+    fi
+
+    case $FSTYP in
+    xfs)
+	# don't override MKFS_OPTIONS that set a block size.
+	echo $MKFS_OPTIONS |egrep -q "b?size="
+	if [ $? -eq 0 ]; then
+		_scratch_mkfs_xfs
+	else
+		_scratch_mkfs_xfs -b size=$blocksize
+	fi
+	;;
+    ext2|ext3|ext4|ocfs2)
+	${MKFS_PROG}.$FSTYP -F $MKFS_OPTIONS -b $blocksize $SCRATCH_DEV
+	;;
+    *)
+	_notrun "Filesystem $FSTYP not supported in _scratch_mkfs_blocksized"
+	;;
+    esac
+}
diff --git a/tests/generic/868 b/tests/generic/868
new file mode 100755
index 0000000..0de4f75
--- /dev/null
+++ b/tests/generic/868
@@ -0,0 +1,102 @@
+#! /bin/bash
+# FS QA Test No. 868
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is a regular block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/868.out b/tests/generic/868.out
new file mode 100644
index 0000000..d4a4e42
--- /dev/null
+++ b/tests/generic/868.out
@@ -0,0 +1,7 @@
+QA output created by 868
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/869 b/tests/generic/869
new file mode 100755
index 0000000..b64407c
--- /dev/null
+++ b/tests/generic/869
@@ -0,0 +1,102 @@
+#! /bin/bash
+# FS QA Test No. 869
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is a regular block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/869.out b/tests/generic/869.out
new file mode 100644
index 0000000..612da46
--- /dev/null
+++ b/tests/generic/869.out
@@ -0,0 +1,7 @@
+QA output created by 869
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/870 b/tests/generic/870
new file mode 100755
index 0000000..3efb2d3
--- /dev/null
+++ b/tests/generic/870
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 870
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is a unwritten block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/870.out b/tests/generic/870.out
new file mode 100644
index 0000000..d67b27c
--- /dev/null
+++ b/tests/generic/870.out
@@ -0,0 +1,7 @@
+QA output created by 870
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/871 b/tests/generic/871
new file mode 100755
index 0000000..f0cc148
--- /dev/null
+++ b/tests/generic/871
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 871
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is a unwritten block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/871.out b/tests/generic/871.out
new file mode 100644
index 0000000..b2e20a4
--- /dev/null
+++ b/tests/generic/871.out
@@ -0,0 +1,7 @@
+QA output created by 871
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/872 b/tests/generic/872
new file mode 100755
index 0000000..9ba0d71
--- /dev/null
+++ b/tests/generic/872
@@ -0,0 +1,97 @@
+#! /bin/bash
+# FS QA Test No. 872
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is a hole.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/872.out b/tests/generic/872.out
new file mode 100644
index 0000000..40eff65
--- /dev/null
+++ b/tests/generic/872.out
@@ -0,0 +1,7 @@
+QA output created by 872
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/873 b/tests/generic/873
new file mode 100755
index 0000000..589d12b
--- /dev/null
+++ b/tests/generic/873
@@ -0,0 +1,97 @@
+#! /bin/bash
+# FS QA Test No. 873
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is a unwritten block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/873.out b/tests/generic/873.out
new file mode 100644
index 0000000..c6a5399
--- /dev/null
+++ b/tests/generic/873.out
@@ -0,0 +1,7 @@
+QA output created by 873
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/874 b/tests/generic/874
new file mode 100755
index 0000000..e89b910
--- /dev/null
+++ b/tests/generic/874
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 874
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is delalloc.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/874.out b/tests/generic/874.out
new file mode 100644
index 0000000..0ded3bf
--- /dev/null
+++ b/tests/generic/874.out
@@ -0,0 +1,7 @@
+QA output created by 874
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/875 b/tests/generic/875
new file mode 100755
index 0000000..d7ac31c
--- /dev/null
+++ b/tests/generic/875
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 875
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is delalloc.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/875.out b/tests/generic/875.out
new file mode 100644
index 0000000..968fe4b
--- /dev/null
+++ b/tests/generic/875.out
@@ -0,0 +1,7 @@
+QA output created by 875
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/876 b/tests/generic/876
new file mode 100755
index 0000000..c38690e
--- /dev/null
+++ b/tests/generic/876
@@ -0,0 +1,163 @@
+#! /bin/bash
+# FS QA Test No. 876
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# surrounding blocks vary between unwritten/regular/delalloc/hole.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+runtest() {
+	echo "runtest $1 $2"
+	b2=$1
+	b4=$2
+	dir=$3
+
+	echo "Create the original files"
+	mkdir -p "$dir"
+	_pwrite_byte 0x61 0 $PAGESZ "$dir/file1" >> "$seqres.full"
+
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2.chk" >> "$seqres.full"
+
+	case "$b2" in
+	"regular")
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+
+
+	case "$b4" in
+	"regular")
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+	_reflink_range "$dir/file1" $BLKSZ "$dir/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+
+	echo "CoW and unmount"
+	if [ "$b2" = "delalloc" ]; then
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	if [ "$b4" = "delalloc" ]; then
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+}
+
+runtest regular delalloc "$TESTDIR/r-d"
+runtest regular unwritten "$TESTDIR/r-u"
+runtest regular hole "$TESTDIR/r-h"
+runtest regular regular "$TESTDIR/r-r"
+
+runtest hole delalloc "$TESTDIR/h-d"
+runtest hole unwritten "$TESTDIR/h-u"
+runtest hole hole "$TESTDIR/h-h"
+runtest hole regular "$TESTDIR/h-r"
+
+runtest unwritten delalloc "$TESTDIR/u-d"
+runtest unwritten unwritten "$TESTDIR/u-u"
+runtest unwritten hole "$TESTDIR/u-h"
+runtest unwritten regular "$TESTDIR/u-r"
+
+runtest delalloc delalloc "$TESTDIR/d-d"
+runtest delalloc unwritten "$TESTDIR/d-u"
+runtest delalloc hole "$TESTDIR/d-h"
+runtest delalloc regular "$TESTDIR/d-r"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/876.out b/tests/generic/876.out
new file mode 100644
index 0000000..b93781d
--- /dev/null
+++ b/tests/generic/876.out
@@ -0,0 +1,83 @@
+QA output created by 876
+Format and mount
+runtest regular delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/877 b/tests/generic/877
new file mode 100755
index 0000000..dc063f9
--- /dev/null
+++ b/tests/generic/877
@@ -0,0 +1,163 @@
+#! /bin/bash
+# FS QA Test No. 877
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the surrounding blocks vary between unwritten/regular/delalloc/hole.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+runtest() {
+	echo "runtest $1 $2"
+	b2=$1
+	b4=$2
+	dir=$3
+
+	echo "Create the original files"
+	mkdir -p "$dir"
+	_pwrite_byte 0x61 0 $PAGESZ "$dir/file1" >> "$seqres.full"
+
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2.chk" >> "$seqres.full"
+
+	case "$b2" in
+	"regular")
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+
+
+	case "$b4" in
+	"regular")
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+	_reflink_range "$dir/file1" $BLKSZ "$dir/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+
+	echo "CoW and unmount"
+	if [ "$b2" = "delalloc" ]; then
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	if [ "$b4" = "delalloc" ]; then
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+}
+
+runtest regular delalloc "$TESTDIR/r-d"
+runtest regular unwritten "$TESTDIR/r-u"
+runtest regular hole "$TESTDIR/r-h"
+runtest regular regular "$TESTDIR/r-r"
+
+runtest hole delalloc "$TESTDIR/h-d"
+runtest hole unwritten "$TESTDIR/h-u"
+runtest hole hole "$TESTDIR/h-h"
+runtest hole regular "$TESTDIR/h-r"
+
+runtest unwritten delalloc "$TESTDIR/u-d"
+runtest unwritten unwritten "$TESTDIR/u-u"
+runtest unwritten hole "$TESTDIR/u-h"
+runtest unwritten regular "$TESTDIR/u-r"
+
+runtest delalloc delalloc "$TESTDIR/d-d"
+runtest delalloc unwritten "$TESTDIR/d-u"
+runtest delalloc hole "$TESTDIR/d-h"
+runtest delalloc regular "$TESTDIR/d-r"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/877.out b/tests/generic/877.out
new file mode 100644
index 0000000..b97ef2f
--- /dev/null
+++ b/tests/generic/877.out
@@ -0,0 +1,83 @@
+QA output created by 877
+Format and mount
+runtest regular delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/group b/tests/generic/group
index ea4901b..f3e3e2c 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -279,3 +279,13 @@
 865 auto quick clone
 866 auto quick clone
 867 auto quick clone
+868 auto quick clone
+869 auto quick clone
+870 auto quick clone
+871 auto quick clone
+872 auto quick clone
+873 auto quick clone
+874 auto quick clone
+875 auto quick clone
+876 auto quick clone
+877 auto quick clone

[PATCH 09/11] reflink: test CoW with blocksize < pagesize

[Darrick J. Wong]

Test CoW operations when blocksize < pagesize and the only reflink
block is in the middle of the page.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 common/reflink        |   30 +++++++++
 tests/generic/868     |  102 +++++++++++++++++++++++++++++++
 tests/generic/868.out |    7 ++
 tests/generic/869     |  102 +++++++++++++++++++++++++++++++
 tests/generic/869.out |    7 ++
 tests/generic/870     |  103 +++++++++++++++++++++++++++++++
 tests/generic/870.out |    7 ++
 tests/generic/871     |  103 +++++++++++++++++++++++++++++++
 tests/generic/871.out |    7 ++
 tests/generic/872     |   97 +++++++++++++++++++++++++++++
 tests/generic/872.out |    7 ++
 tests/generic/873     |   97 +++++++++++++++++++++++++++++
 tests/generic/873.out |    7 ++
 tests/generic/874     |  103 +++++++++++++++++++++++++++++++
 tests/generic/874.out |    7 ++
 tests/generic/875     |  103 +++++++++++++++++++++++++++++++
 tests/generic/875.out |    7 ++
 tests/generic/876     |  163 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/876.out |   83 +++++++++++++++++++++++++
 tests/generic/877     |  163 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/877.out |   83 +++++++++++++++++++++++++
 tests/generic/group   |   10 +++
 22 files changed, 1398 insertions(+)
 create mode 100755 tests/generic/868
 create mode 100644 tests/generic/868.out
 create mode 100755 tests/generic/869
 create mode 100644 tests/generic/869.out
 create mode 100755 tests/generic/870
 create mode 100644 tests/generic/870.out
 create mode 100755 tests/generic/871
 create mode 100644 tests/generic/871.out
 create mode 100755 tests/generic/872
 create mode 100644 tests/generic/872.out
 create mode 100755 tests/generic/873
 create mode 100644 tests/generic/873.out
 create mode 100755 tests/generic/874
 create mode 100644 tests/generic/874.out
 create mode 100755 tests/generic/875
 create mode 100644 tests/generic/875.out
 create mode 100755 tests/generic/876
 create mode 100644 tests/generic/876.out
 create mode 100755 tests/generic/877
 create mode 100644 tests/generic/877.out


diff --git a/common/reflink b/common/reflink
index eab7f66..de8e56d 100644
--- a/common/reflink
+++ b/common/reflink
@@ -183,3 +183,33 @@ _dedupe_range() {
 
 	"$XFS_IO_PROG" $xfs_io_args -f -c "dedupe $file1 $offset1 $offset2 $len" "$file2"
 }
+
+# Create fs of certain blocksize on scratch device
+# _scratch_mkfs_blocksized blocksize
+_scratch_mkfs_blocksized()
+{
+    blocksize=$1
+
+    re='^[0-9]+$'
+    if ! [[ $blocksize =~ $re ]] ; then
+        _notrun "error: _scratch_mkfs_sized: block size \"$blocksize\" not an integer."
+    fi
+
+    case $FSTYP in
+    xfs)
+	# don't override MKFS_OPTIONS that set a block size.
+	echo $MKFS_OPTIONS |egrep -q "b?size="
+	if [ $? -eq 0 ]; then
+		_scratch_mkfs_xfs
+	else
+		_scratch_mkfs_xfs -b size=$blocksize
+	fi
+	;;
+    ext2|ext3|ext4|ocfs2)
+	${MKFS_PROG}.$FSTYP -F $MKFS_OPTIONS -b $blocksize $SCRATCH_DEV
+	;;
+    *)
+	_notrun "Filesystem $FSTYP not supported in _scratch_mkfs_blocksized"
+	;;
+    esac
+}
diff --git a/tests/generic/868 b/tests/generic/868
new file mode 100755
index 0000000..0de4f75
--- /dev/null
+++ b/tests/generic/868
@@ -0,0 +1,102 @@
+#! /bin/bash
+# FS QA Test No. 868
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is a regular block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/868.out b/tests/generic/868.out
new file mode 100644
index 0000000..d4a4e42
--- /dev/null
+++ b/tests/generic/868.out
@@ -0,0 +1,7 @@
+QA output created by 868
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/869 b/tests/generic/869
new file mode 100755
index 0000000..b64407c
--- /dev/null
+++ b/tests/generic/869
@@ -0,0 +1,102 @@
+#! /bin/bash
+# FS QA Test No. 869
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is a regular block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/869.out b/tests/generic/869.out
new file mode 100644
index 0000000..612da46
--- /dev/null
+++ b/tests/generic/869.out
@@ -0,0 +1,7 @@
+QA output created by 869
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/870 b/tests/generic/870
new file mode 100755
index 0000000..3efb2d3
--- /dev/null
+++ b/tests/generic/870
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 870
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is a unwritten block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/870.out b/tests/generic/870.out
new file mode 100644
index 0000000..d67b27c
--- /dev/null
+++ b/tests/generic/870.out
@@ -0,0 +1,7 @@
+QA output created by 870
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/871 b/tests/generic/871
new file mode 100755
index 0000000..f0cc148
--- /dev/null
+++ b/tests/generic/871
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 871
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is a unwritten block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/871.out b/tests/generic/871.out
new file mode 100644
index 0000000..b2e20a4
--- /dev/null
+++ b/tests/generic/871.out
@@ -0,0 +1,7 @@
+QA output created by 871
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/872 b/tests/generic/872
new file mode 100755
index 0000000..9ba0d71
--- /dev/null
+++ b/tests/generic/872
@@ -0,0 +1,97 @@
+#! /bin/bash
+# FS QA Test No. 872
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is a hole.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/872.out b/tests/generic/872.out
new file mode 100644
index 0000000..40eff65
--- /dev/null
+++ b/tests/generic/872.out
@@ -0,0 +1,7 @@
+QA output created by 872
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/873 b/tests/generic/873
new file mode 100755
index 0000000..589d12b
--- /dev/null
+++ b/tests/generic/873
@@ -0,0 +1,97 @@
+#! /bin/bash
+# FS QA Test No. 873
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is a unwritten block.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/873.out b/tests/generic/873.out
new file mode 100644
index 0000000..c6a5399
--- /dev/null
+++ b/tests/generic/873.out
@@ -0,0 +1,7 @@
+QA output created by 873
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/874 b/tests/generic/874
new file mode 100755
index 0000000..e89b910
--- /dev/null
+++ b/tests/generic/874
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 874
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# second block is delalloc.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/874.out b/tests/generic/874.out
new file mode 100644
index 0000000..0ded3bf
--- /dev/null
+++ b/tests/generic/874.out
@@ -0,0 +1,7 @@
+QA output created by 874
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/875 b/tests/generic/875
new file mode 100755
index 0000000..d7ac31c
--- /dev/null
+++ b/tests/generic/875
@@ -0,0 +1,103 @@
+#! /bin/bash
+# FS QA Test No. 875
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the second block is delalloc.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+echo "Create the original files"
+_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "CoW and unmount"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2" >> "$seqres.full"
+_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/875.out b/tests/generic/875.out
new file mode 100644
index 0000000..968fe4b
--- /dev/null
+++ b/tests/generic/875.out
@@ -0,0 +1,7 @@
+QA output created by 875
+Format and mount
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/876 b/tests/generic/876
new file mode 100755
index 0000000..c38690e
--- /dev/null
+++ b/tests/generic/876
@@ -0,0 +1,163 @@
+#! /bin/bash
+# FS QA Test No. 876
+#
+# See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
+# surrounding blocks vary between unwritten/regular/delalloc/hole.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+runtest() {
+	echo "runtest $1 $2"
+	b2=$1
+	b4=$2
+	dir=$3
+
+	echo "Create the original files"
+	mkdir -p "$dir"
+	_pwrite_byte 0x61 0 $PAGESZ "$dir/file1" >> "$seqres.full"
+
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2.chk" >> "$seqres.full"
+
+	case "$b2" in
+	"regular")
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+
+
+	case "$b4" in
+	"regular")
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+	_reflink_range "$dir/file1" $BLKSZ "$dir/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+
+	echo "CoW and unmount"
+	if [ "$b2" = "delalloc" ]; then
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	if [ "$b4" = "delalloc" ]; then
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $((BLKSZ + 17)) $((BLKSZ * 3 - 34))" "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+}
+
+runtest regular delalloc "$TESTDIR/r-d"
+runtest regular unwritten "$TESTDIR/r-u"
+runtest regular hole "$TESTDIR/r-h"
+runtest regular regular "$TESTDIR/r-r"
+
+runtest hole delalloc "$TESTDIR/h-d"
+runtest hole unwritten "$TESTDIR/h-u"
+runtest hole hole "$TESTDIR/h-h"
+runtest hole regular "$TESTDIR/h-r"
+
+runtest unwritten delalloc "$TESTDIR/u-d"
+runtest unwritten unwritten "$TESTDIR/u-u"
+runtest unwritten hole "$TESTDIR/u-h"
+runtest unwritten regular "$TESTDIR/u-r"
+
+runtest delalloc delalloc "$TESTDIR/d-d"
+runtest delalloc unwritten "$TESTDIR/d-u"
+runtest delalloc hole "$TESTDIR/d-h"
+runtest delalloc regular "$TESTDIR/d-r"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/876.out b/tests/generic/876.out
new file mode 100644
index 0000000..b93781d
--- /dev/null
+++ b/tests/generic/876.out
@@ -0,0 +1,83 @@
+QA output created by 876
+Format and mount
+runtest regular delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/877 b/tests/generic/877
new file mode 100755
index 0000000..dc063f9
--- /dev/null
+++ b/tests/generic/877
@@ -0,0 +1,163 @@
+#! /bin/bash
+# FS QA Test No. 877
+#
+# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
+# the surrounding blocks vary between unwritten/regular/delalloc/hole.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_xfs_io_command "falloc"
+
+rm -f "$seqres.full"
+
+PAGESZ=$(getconf PAGE_SIZE)
+BLKSZ=$((PAGESZ / 4))
+
+echo "Format and mount"
+_scratch_mkfs_blocksized $BLKSZ > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
+test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
+
+runtest() {
+	echo "runtest $1 $2"
+	b2=$1
+	b4=$2
+	dir=$3
+
+	echo "Create the original files"
+	mkdir -p "$dir"
+	_pwrite_byte 0x61 0 $PAGESZ "$dir/file1" >> "$seqres.full"
+
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$dir/file2.chk" >> "$seqres.full"
+
+	case "$b2" in
+	"regular")
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+
+
+	case "$b4" in
+	"regular")
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"unwritten")
+		"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+		;;
+	"hole")
+		;;
+	esac
+
+	_reflink_range "$dir/file1" $BLKSZ "$dir/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
+	_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+
+	echo "CoW and unmount"
+	if [ "$b2" = "delalloc" ]; then
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $BLKSZ $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	if [ "$b4" = "delalloc" ]; then
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2" >> "$seqres.full"
+		_pwrite_byte 0x61 $((BLKSZ * 3)) $BLKSZ "$dir/file2.chk" >> "$seqres.full"
+	fi
+
+	"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$dir/file2" >> "$seqres.full"
+	"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$dir/file2.chk" >> "$seqres.full"
+	_scratch_remount
+
+	echo "Compare files"
+	! cmp -s "$dir/file1" "$dir/file2" || _fail "file1 and file2 don't match."
+	cmp -s "$dir/file2" "$dir/file2.chk" || _fail "file2 and file2.chk don't match."
+}
+
+runtest regular delalloc "$TESTDIR/r-d"
+runtest regular unwritten "$TESTDIR/r-u"
+runtest regular hole "$TESTDIR/r-h"
+runtest regular regular "$TESTDIR/r-r"
+
+runtest hole delalloc "$TESTDIR/h-d"
+runtest hole unwritten "$TESTDIR/h-u"
+runtest hole hole "$TESTDIR/h-h"
+runtest hole regular "$TESTDIR/h-r"
+
+runtest unwritten delalloc "$TESTDIR/u-d"
+runtest unwritten unwritten "$TESTDIR/u-u"
+runtest unwritten hole "$TESTDIR/u-h"
+runtest unwritten regular "$TESTDIR/u-r"
+
+runtest delalloc delalloc "$TESTDIR/d-d"
+runtest delalloc unwritten "$TESTDIR/d-u"
+runtest delalloc hole "$TESTDIR/d-h"
+runtest delalloc regular "$TESTDIR/d-r"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/877.out b/tests/generic/877.out
new file mode 100644
index 0000000..b97ef2f
--- /dev/null
+++ b/tests/generic/877.out
@@ -0,0 +1,83 @@
+QA output created by 877
+Format and mount
+runtest regular delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest regular regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest hole regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest unwritten regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc delalloc
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc unwritten
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc hole
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+runtest delalloc regular
+Create the original files
+Compare files
+CoW and unmount
+Compare files
+Check for damage
diff --git a/tests/generic/group b/tests/generic/group
index ea4901b..f3e3e2c 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -279,3 +279,13 @@
 865 auto quick clone
 866 auto quick clone
 867 auto quick clone
+868 auto quick clone
+869 auto quick clone
+870 auto quick clone
+871 auto quick clone
+872 auto quick clone
+873 auto quick clone
+874 auto quick clone
+875 auto quick clone
+876 auto quick clone
+877 auto quick clone

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

[PATCH 10/11] reflink: test a big CoW operation

[Darrick J. Wong]

Test what happens when we send largeish buffers to CoW all at once.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/878     |   99 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/878.out |   13 ++++++
 tests/generic/879     |   99 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/879.out |   13 ++++++
 tests/generic/group   |    2 +
 5 files changed, 226 insertions(+)
 create mode 100755 tests/generic/878
 create mode 100644 tests/generic/878.out
 create mode 100755 tests/generic/879
 create mode 100644 tests/generic/879.out


diff --git a/tests/generic/878 b/tests/generic/878
new file mode 100755
index 0000000..342a94e
--- /dev/null
+++ b/tests/generic/878
@@ -0,0 +1,99 @@
+#! /bin/bash
+# FS QA Test No. 878
+#
+# Reflink two large files and CoW them in big chunks.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+BLKSZ=65536
+NR=6400
+BSZ=1280
+
+FREE_BLOCKS=$(stat -f -c '%a' "$TESTDIR")
+REAL_BLKSZ=$(stat -f -c '%S' "$TESTDIR")
+SPACE_NEEDED=$(((BLKSZ * NR * 3) * 5 / 4))
+SPACE_AVAIL=$((FREE_BLOCKS * REAL_BLKSZ))
+test $SPACE_NEEDED -gt $SPACE_AVAIL && _notrun "Not enough space. $SPACE_AVAIL < $SPACE_NEEDED"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/878.out b/tests/generic/878.out
new file mode 100644
index 0000000..0da5baa
--- /dev/null
+++ b/tests/generic/878.out
@@ -0,0 +1,13 @@
+QA output created by 878
+Format and mount
+Create the original files
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file1
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file2
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file2.chk
+CoW and unmount
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file1
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-878/file2
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-878/file2.chk
+Check for damage
diff --git a/tests/generic/879 b/tests/generic/879
new file mode 100755
index 0000000..83be543
--- /dev/null
+++ b/tests/generic/879
@@ -0,0 +1,99 @@
+#! /bin/bash
+# FS QA Test No. 879
+#
+# Reflink two large files and DIO CoW them in big chunks.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+BLKSZ=65536
+NR=6400
+BSZ=1280
+
+FREE_BLOCKS=$(stat -f -c '%a' "$TESTDIR")
+REAL_BLKSZ=$(stat -f -c '%S' "$TESTDIR")
+SPACE_NEEDED=$(((BLKSZ * NR * 3) * 5 / 4))
+SPACE_AVAIL=$((FREE_BLOCKS * REAL_BLKSZ))
+test $SPACE_NEEDED -gt $SPACE_AVAIL && _notrun "Not enough space. $SPACE_AVAIL < $SPACE_NEEDED"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/879.out b/tests/generic/879.out
new file mode 100644
index 0000000..fc1363a
--- /dev/null
+++ b/tests/generic/879.out
@@ -0,0 +1,13 @@
+QA output created by 879
+Format and mount
+Create the original files
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file1
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file2
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file2.chk
+CoW and unmount
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file1
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-879/file2
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-879/file2.chk
+Check for damage
diff --git a/tests/generic/group b/tests/generic/group
index f3e3e2c..68853b4 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -289,3 +289,5 @@
 875 auto quick clone
 876 auto quick clone
 877 auto quick clone
+878 auto quick clone
+879 auto quick clone

[PATCH 10/11] reflink: test a big CoW operation

[Darrick J. Wong]

Test what happens when we send largeish buffers to CoW all at once.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/878     |   99 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/878.out |   13 ++++++
 tests/generic/879     |   99 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/879.out |   13 ++++++
 tests/generic/group   |    2 +
 5 files changed, 226 insertions(+)
 create mode 100755 tests/generic/878
 create mode 100644 tests/generic/878.out
 create mode 100755 tests/generic/879
 create mode 100644 tests/generic/879.out


diff --git a/tests/generic/878 b/tests/generic/878
new file mode 100755
index 0000000..342a94e
--- /dev/null
+++ b/tests/generic/878
@@ -0,0 +1,99 @@
+#! /bin/bash
+# FS QA Test No. 878
+#
+# Reflink two large files and CoW them in big chunks.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+BLKSZ=65536
+NR=6400
+BSZ=1280
+
+FREE_BLOCKS=$(stat -f -c '%a' "$TESTDIR")
+REAL_BLKSZ=$(stat -f -c '%S' "$TESTDIR")
+SPACE_NEEDED=$(((BLKSZ * NR * 3) * 5 / 4))
+SPACE_AVAIL=$((FREE_BLOCKS * REAL_BLKSZ))
+test $SPACE_NEEDED -gt $SPACE_AVAIL && _notrun "Not enough space. $SPACE_AVAIL < $SPACE_NEEDED"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/878.out b/tests/generic/878.out
new file mode 100644
index 0000000..0da5baa
--- /dev/null
+++ b/tests/generic/878.out
@@ -0,0 +1,13 @@
+QA output created by 878
+Format and mount
+Create the original files
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file1
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file2
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file2.chk
+CoW and unmount
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-878/file1
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-878/file2
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-878/file2.chk
+Check for damage
diff --git a/tests/generic/879 b/tests/generic/879
new file mode 100755
index 0000000..83be543
--- /dev/null
+++ b/tests/generic/879
@@ -0,0 +1,99 @@
+#! /bin/bash
+# FS QA Test No. 879
+#
+# Reflink two large files and DIO CoW them in big chunks.
+#
+# This test is dependent on the system page size, so we cannot use md5 in
+# the golden output; we can only compare to a check file.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1    # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_scratch_reflink
+_require_cp_reflink
+
+rm -f "$seqres.full"
+
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+TESTDIR="$SCRATCH_MNT/test-$seq"
+rm -rf $TESTDIR
+mkdir $TESTDIR
+
+BLKSZ=65536
+NR=6400
+BSZ=1280
+
+FREE_BLOCKS=$(stat -f -c '%a' "$TESTDIR")
+REAL_BLKSZ=$(stat -f -c '%S' "$TESTDIR")
+SPACE_NEEDED=$(((BLKSZ * NR * 3) * 5 / 4))
+SPACE_AVAIL=$((FREE_BLOCKS * REAL_BLKSZ))
+test $SPACE_NEEDED -gt $SPACE_AVAIL && _notrun "Not enough space. $SPACE_AVAIL < $SPACE_NEEDED"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file1" >> "$seqres.full"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_scratch
+md5sum "$TESTDIR/file2" | _filter_scratch
+md5sum "$TESTDIR/file2.chk" | _filter_scratch
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+_check_scratch_fs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/879.out b/tests/generic/879.out
new file mode 100644
index 0000000..fc1363a
--- /dev/null
+++ b/tests/generic/879.out
@@ -0,0 +1,13 @@
+QA output created by 879
+Format and mount
+Create the original files
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file1
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file2
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file2.chk
+CoW and unmount
+Compare files
+01768a16d33c9bd21dc67a7fac006ee1  SCRATCH_MNT/test-879/file1
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-879/file2
+c835fd53fa27b72511b250d51595c053  SCRATCH_MNT/test-879/file2.chk
+Check for damage
diff --git a/tests/generic/group b/tests/generic/group
index f3e3e2c..68853b4 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -289,3 +289,5 @@
 875 auto quick clone
 876 auto quick clone
 877 auto quick clone
+878 auto quick clone
+879 auto quick clone

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[PATCH 11/11] generic: create a dedupe group

[Darrick J. Wong]

Create a group for just the deduplication tests.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/group |   18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)


diff --git a/tests/generic/group b/tests/generic/group
index 68853b4..2c18bce 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -123,8 +123,8 @@
 118 auto quick clone
 119 auto quick clone
 120 other auto quick
-121 auto quick clone
-122 auto quick clone
+121 auto quick clone dedupe
+122 auto quick clone dedupe
 123 perms auto quick
 124 pattern auto quick
 125 other auto
@@ -138,8 +138,8 @@
 133 rw auto
 134 auto quick clone
 135 metadata auto quick
-136 auto quick clone
-137 auto quick clone
+136 auto quick clone dedupe
+137 auto quick clone dedupe
 138 auto quick clone
 139 auto quick clone
 140 auto quick clone
@@ -160,12 +160,12 @@
 155 auto quick clone
 156 auto quick clone
 157 auto quick clone
-158 auto quick clone
+158 auto quick clone dedupe
 159 auto quick clone
-160 auto quick clone
+160 auto quick clone dedupe
 161 auto quick clone
-162 auto quick clone
-163 auto quick clone
+162 auto quick clone dedupe
+163 auto quick clone dedupe
 164 auto quick clone
 165 auto quick clone
 166 auto quick clone
@@ -261,7 +261,7 @@
 847 auto quick clone
 848 auto quick clone
 849 auto quick clone
-850 auto quick clone
+850 auto quick clone dedupe
 851 auto quick clone
 852 auto quick clone
 853 auto quick clone

[PATCH 11/11] generic: create a dedupe group

[Darrick J. Wong]

Create a group for just the deduplication tests.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/group |   18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)


diff --git a/tests/generic/group b/tests/generic/group
index 68853b4..2c18bce 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -123,8 +123,8 @@
 118 auto quick clone
 119 auto quick clone
 120 other auto quick
-121 auto quick clone
-122 auto quick clone
+121 auto quick clone dedupe
+122 auto quick clone dedupe
 123 perms auto quick
 124 pattern auto quick
 125 other auto
@@ -138,8 +138,8 @@
 133 rw auto
 134 auto quick clone
 135 metadata auto quick
-136 auto quick clone
-137 auto quick clone
+136 auto quick clone dedupe
+137 auto quick clone dedupe
 138 auto quick clone
 139 auto quick clone
 140 auto quick clone
@@ -160,12 +160,12 @@
 155 auto quick clone
 156 auto quick clone
 157 auto quick clone
-158 auto quick clone
+158 auto quick clone dedupe
 159 auto quick clone
-160 auto quick clone
+160 auto quick clone dedupe
 161 auto quick clone
-162 auto quick clone
-163 auto quick clone
+162 auto quick clone dedupe
+163 auto quick clone dedupe
 164 auto quick clone
 165 auto quick clone
 166 auto quick clone
@@ -261,7 +261,7 @@
 847 auto quick clone
 848 auto quick clone
 849 auto quick clone
-850 auto quick clone
+850 auto quick clone dedupe
 851 auto quick clone
 852 auto quick clone
 853 auto quick clone

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http://oss.sgi.com/mailman/listinfo/xfs