[PATCH 10/23] xfs: more reflink tests

From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: david@fromorbit.com, darrick.wong@oracle.com
Cc: linux-btrfs@vger.kernel.org, fstests@vger.kernel.org, xfs@oss.sgi.com
Subject: [PATCH 10/23] xfs: more reflink tests
Date: Mon, 08 Feb 2016 17:12:50 -0800	[thread overview]
Message-ID: <20160209011250.23099.50000.stgit@birch.djwong.org> (raw)
In-Reply-To: <20160209011145.23099.95354.stgit@birch.djwong.org>

Create a couple of XFS-specific tests -- one to check that growing
and shrinking the refcount btree works and a second one to check
what happens when we hit maximum refcount.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/xfs/169     |   90 ++++++++++++++++++++++++++++++++++++++++
 tests/xfs/169.out |    8 ++++
 tests/xfs/179     |  119 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/179.out |   10 ++++
 tests/xfs/group   |    4 +-
 5 files changed, 230 insertions(+), 1 deletion(-)
 create mode 100755 tests/xfs/169
 create mode 100644 tests/xfs/169.out
 create mode 100755 tests/xfs/179
 create mode 100644 tests/xfs/179.out

diff --git a/tests/xfs/169 b/tests/xfs/169
new file mode 100755
index 0000000..e0fcc44
--- /dev/null
+++ b/tests/xfs/169
@@ -0,0 +1,90 @@
+#! /bin/bash
+# FS QA Test No. 169
+#
+# Ensure that we can create enough distinct reflink entries to force creation
+# of a multi-level refcount btree.  Delete and recreate a few times to
+# exercise the refcount btree grow/shrink functions.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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 /
+    umount "$SCRATCH_MNT" > /dev/null 2>&1
+    rm -rf "$tmp".*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_supported_fs xfs
+_require_scratch_reflink
+
+rm -f "$seqres.full"
+
+_scratch_mkfs >/dev/null 2>&1
+_scratch_mount
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf "$testdir"
+mkdir "$testdir"
+
+echo "Create the original file blocks"
+blksz="$(stat -f "$testdir" -c '%S')"
+nr_blks=$((8 * blksz / 12))
+
+for i in 1 2 x; do
+	_pwrite_byte 0x61 0 $((blksz * nr_blks)) "$testdir/file1" >> "$seqres.full"
+
+	echo "$i: Reflink every other block"
+	seq 1 2 $((nr_blks - 1)) | while read nr; do
+		_reflink_range  "$testdir/file1" $((nr * blksz)) \
+				"$testdir/file2" $((nr * blksz)) $blksz >> "$seqres.full"
+	done
+	umount "$SCRATCH_MNT"
+	_check_scratch_fs
+	_scratch_mount
+
+	test "$i" = "x" && break
+
+	echo "$i: Delete both files"
+	rm -rf "$testdir/file1" "$testdir/file2"
+	umount "$SCRATCH_MNT"
+	_check_scratch_fs
+	_scratch_mount
+done
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/169.out b/tests/xfs/169.out
new file mode 100644
index 0000000..263f696
--- /dev/null
+++ b/tests/xfs/169.out
@@ -0,0 +1,8 @@
+QA output created by 169
+Create the original file blocks
+1: Reflink every other block
+1: Delete both files
+2: Reflink every other block
+2: Delete both files
+x: Reflink every other block
+Check for damage
diff --git a/tests/xfs/179 b/tests/xfs/179
new file mode 100755
index 0000000..4cdf862
--- /dev/null
+++ b/tests/xfs/179
@@ -0,0 +1,119 @@
+#! /bin/bash
+# FS QA Test No. 179
+#
+# See how well reflink handles overflowing reflink counts.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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 "$tmp".*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/attr
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+
+test -x "$here/src/punch-alternating" || _notrun "punch-alternating not built"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs -d agcount=1 > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf "$testdir"
+mkdir "$testdir"
+
+blksz=65536
+
+echo "Create original files"
+_pwrite_byte 0x61 0 $blksz "$testdir/file1" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+
+echo "Change reference count"
+umount "$SCRATCH_MNT"
+echo "set refcount to -4" >> "$seqres.full"
+"$XFS_DB_PROG" -x -c 'agf 0' -c 'addr refcntroot' -c 'write recs[1].refcount 4294967292' "$SCRATCH_DEV" >> "$seqres.full"
+echo "check refcount after setting to -4" >> "$seqres.full"
+"$XFS_DB_PROG" -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' "$SCRATCH_DEV" >> "$seqres.full"
+_scratch_mount >> "$seqres.full"
+
+echo "Reflink the overlinked file"
+_cp_reflink "$testdir/file1" "$testdir/file3" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file4" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file5" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file6" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file7" >> "$seqres.full"
+
+echo "Check scratch fs"
+umount "$SCRATCH_MNT"
+echo "check refcount after reflinking 5 more times" >> "$seqres.full"
+"$XFS_DB_PROG" -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' "$SCRATCH_DEV" >> "$seqres.full"
+_scratch_mount >> "$seqres.full"
+
+echo "CoW a couple files"
+_pwrite_byte 0x62 0 $blksz "$testdir/file3" >> "$seqres.full"
+_pwrite_byte 0x62 0 $blksz "$testdir/file5" >> "$seqres.full"
+_pwrite_byte 0x62 0 $blksz "$testdir/file7" >> "$seqres.full"
+
+echo "Check scratch fs"
+umount "$SCRATCH_MNT"
+echo "check refcount after cowing 3 files" >> "$seqres.full"
+"$XFS_DB_PROG" -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' "$SCRATCH_DEV" >> "$seqres.full"
+_scratch_mount >> "$seqres.full"
+
+echo "Remove reflinked files"
+rm -rf "$testdir"/file*
+
+echo "Check scratch fs"
+umount "$SCRATCH_MNT"
+echo "check refcount after removing all files" >> "$seqres.full"
+"$XFS_DB_PROG" -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' "$SCRATCH_DEV" >> "$seqres.full"
+"$XFS_REPAIR_PROG" -o force_geometry -n "$SCRATCH_DEV" >> "$seqres.full" 2>&1
+res=$?
+if [ $res -eq 0 ]; then
+	# If repair succeeds then format the device so that the post-test
+	# check doesn't fail due to the single AG.
+	_scratch_mkfs >> "$seqres.full" 2>&1
+else
+	_fail "xfs_repair fails"
+fi
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/179.out b/tests/xfs/179.out
new file mode 100644
index 0000000..4d3e605
--- /dev/null
+++ b/tests/xfs/179.out
@@ -0,0 +1,10 @@
+QA output created by 179
+Format and mount
+Create original files
+Change reference count
+Reflink the overlinked file
+Check scratch fs
+CoW a couple files
+Check scratch fs
+Remove reflinked files
+Check scratch fs
diff --git a/tests/xfs/group b/tests/xfs/group
index 2db3520..f0c1c2b 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -127,7 +127,7 @@
 127 auto quick clone
 128 auto quick clone
 129 auto quick clone
-130 fuzzers
+130 fuzzers clone
 131 auto quick clone
 132 auto quick clone
 133 auto quick quota
@@ -166,6 +166,7 @@
 166 rw metadata auto quick
 167 rw metadata auto stress
 168 dmapi
+169 auto quick clone
 170 rw filestreams auto quick
 171 rw filestreams
 172 rw filestreams
@@ -175,6 +176,7 @@
 176 dmapi
 177 dmapi
 178 mkfs other auto
+179 auto quick clone
 181 log auto quick
 183 rw other auto quick
 185 dmapi

