[PATCH 1/2] xfs: fix filestreams tests when rtinherit=1

["Darrick J. Wong" <djwong@kernel.org>]

From: Darrick J. Wong <djwong@kernel.org>

The filestreams allocator can only be selected for files that reside on
the data volume.  In commit ee3e0010, we sprinkled calls to
_require_no_rtinherit in the filestreams tests so that there wouldn't be
regressions reported if the filesystem is formatted with -d rtinherit=1.

This unnecessarily limits test coverage because userspace can control
the device selection parameters quite easily with xfs_io chattr.  Make
the filestreams tests unset SCRATCH_RTDEV so that the allocator isn't
thrown off by the rtbitmap consuming space on the data device.

Fixes: ee3e0010 ("xfs/realtime: add _require_no_rtinherit function")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 common/filestreams |    5 +++++
 tests/xfs/170      |    1 -
 tests/xfs/171      |    1 -
 tests/xfs/172      |    1 -
 tests/xfs/173      |    1 -
 tests/xfs/174      |    1 -
 tests/xfs/445      |    5 +++++
 7 files changed, 10 insertions(+), 5 deletions(-)


diff --git a/common/filestreams b/common/filestreams
index 267dcb3c..8165effe 100644
--- a/common/filestreams
+++ b/common/filestreams
@@ -90,6 +90,11 @@ _test_streams() {
 	local use_directio="$7"
 	local expected_result="$8"	# "fail" if failure is expected
 
+	# Disable the scratch rt device to avoid test failures relating to the
+	# rt bitmap consuming free space in our small data device and throwing
+	# off the filestreams allocator.
+	unset SCRATCH_RTDEV
+
 	local size=`expr $agsize \* 1024 \* 1024 \* $agcount`
 	_scratch_mkfs_xfs -dsize=$size,agcount=$agcount >/dev/null 2>&1 \
 		|| _fail "mkfs failed"
diff --git a/tests/xfs/170 b/tests/xfs/170
index f7f0dd27..84023e4d 100755
--- a/tests/xfs/170
+++ b/tests/xfs/170
@@ -33,7 +33,6 @@ _cleanup()
 _supported_fs xfs
 
 _require_scratch
-_require_no_rtinherit
 
 _check_filestreams_support || _notrun "filestreams not available"
 
diff --git a/tests/xfs/171 b/tests/xfs/171
index 35503b23..0239081a 100755
--- a/tests/xfs/171
+++ b/tests/xfs/171
@@ -32,7 +32,6 @@ _cleanup()
 _supported_fs xfs
 
 _require_scratch
-_require_no_rtinherit
 
 _check_filestreams_support || _notrun "filestreams not available"
 
diff --git a/tests/xfs/172 b/tests/xfs/172
index 36b4e650..56c34e69 100755
--- a/tests/xfs/172
+++ b/tests/xfs/172
@@ -32,7 +32,6 @@ _cleanup()
 _supported_fs xfs
 
 _require_scratch
-_require_no_rtinherit
 
 _check_filestreams_support || _notrun "filestreams not available"
 
diff --git a/tests/xfs/173 b/tests/xfs/173
index 8ed86d96..f37d2719 100755
--- a/tests/xfs/173
+++ b/tests/xfs/173
@@ -32,7 +32,6 @@ _cleanup()
 _supported_fs xfs
 
 _require_scratch
-_require_no_rtinherit
 
 _check_filestreams_support || _notrun "filestreams not available"
 
diff --git a/tests/xfs/174 b/tests/xfs/174
index 58038939..fc3de04f 100755
--- a/tests/xfs/174
+++ b/tests/xfs/174
@@ -32,7 +32,6 @@ _cleanup()
 _supported_fs xfs
 
 _require_scratch
-_require_no_rtinherit
 
 _check_filestreams_support || _notrun "filestreams not available"
 
diff --git a/tests/xfs/445 b/tests/xfs/445
index 7215fa59..d35010a9 100755
--- a/tests/xfs/445
+++ b/tests/xfs/445
@@ -57,6 +57,11 @@ _require_xfs_io_command "falloc"
 # check for filestreams
 _check_filestreams_support || _notrun "filestreams not available"
 
+# Disable the scratch rt device to avoid test failures relating to the rt
+# bitmap consuming free space in our small data device and throwing off the
+# filestreams allocator.
+unset SCRATCH_RTDEV
+
 # use small AGs for frequent stream switching
 _scratch_mkfs_xfs -d agsize=20m,size=2g >> $seqres.full 2>&1 ||
 	_fail "mkfs failed"