[PATCH 9/9] xfs/547: fix problems with realtime

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

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

This test needs to fragment the free space on the data device so that
each block added to the attr fork gets its own mapping.  If the test
configuration sets up a rt device and rtinherit=1 on the root dir, the
test will erroneously fragment space on the *realtime* volume.  When
this happens, attr fork allocations are contiguous and get merged into
fewer than 10 extents and the test fails.

Fix this test to force all allocations to be on the data device, and fix
incorrect variable usage in the error messages.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 tests/xfs/547 |   14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)


diff --git a/tests/xfs/547 b/tests/xfs/547
index 9d4216ca..60121eb9 100755
--- a/tests/xfs/547
+++ b/tests/xfs/547
@@ -33,6 +33,10 @@ for nrext64 in 0 1; do
 		      >> $seqres.full
 	_scratch_mount >> $seqres.full
 
+	# Force data device extents so that we can fragment the free space
+	# and force attr fork allocations to be non-contiguous
+	_xfs_force_bdev data $SCRATCH_MNT
+
 	bsize=$(_get_file_block_size $SCRATCH_MNT)
 
 	testfile=$SCRATCH_MNT/testfile
@@ -76,13 +80,15 @@ for nrext64 in 0 1; do
 	acnt=$(_scratch_xfs_get_metadata_field core.naextents \
 					       "path /$(basename $testfile)")
 
-	if (( $dcnt != 10 )); then
-		echo "Invalid data fork extent count: $dextcnt"
+	echo "nrext64: $nrext64 dcnt: $dcnt acnt: $acnt" >> $seqres.full
+
+	if [ -z "$dcnt" ] || (( $dcnt != 10 )); then
+		echo "Invalid data fork extent count: $dcnt"
 		exit 1
 	fi
 
-	if (( $acnt < 10 )); then
-		echo "Invalid attr fork extent count: $aextcnt"
+	if [ -z "$acnt" ] || (( $acnt < 10 )); then
+		echo "Invalid attr fork extent count: $acnt"
 		exit 1
 	fi
 done