[PATCH] xfs/126: make blocktrash work reliably on attrleaf blocks

From: Anthony Iliopoulos <ailiop@suse.com>
To: Eryu Guan <guaneryu@gmail.com>
Cc: fstests@vger.kernel.org, linux-xfs@vger.kernel.org,
	"Darrick J . Wong" <darrick.wong@oracle.com>
Subject: [PATCH] xfs/126: make blocktrash work reliably on attrleaf blocks
Date: Tue, 21 Apr 2020 13:36:43 +0200	[thread overview]
Message-ID: <20200421113643.24224-2-ailiop@suse.com> (raw)

Running xfs/126 sometimes fails due to output mismatch. Due to the
randomized nature of the test, periodically the selected bits are not
relevant to the test, or the selected bits are not flipped. Supply an
offset that is close to the start of the metadata block, so that the
test will reliably corrupt the header.

Suggested-by: Darrick J. Wong <darrick.wong@oracle.com>
Link: https://lore.kernel.org/linux-xfs/20200116160323.GC2149943@magnolia
Signed-off-by: Anthony Iliopoulos <ailiop@suse.com>
---
 tests/xfs/126 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/xfs/126 b/tests/xfs/126
index 4f9f8cf9..d01338c9 100755
--- a/tests/xfs/126
+++ b/tests/xfs/126
@@ -72,7 +72,7 @@ echo "+ corrupt xattr"
 loff=1
 while true; do
 	_scratch_xfs_db -x -c "inode ${inode}" -c "ablock ${loff}" -c "stack" | grep -q 'file attr block is unmapped' && break
-	_scratch_xfs_db -x -c "inode ${inode}" -c "ablock ${loff}" -c "stack" -c "blocktrash -x 32 -y $((blksz * 8)) -z ${FUZZ_ARGS}" >> $seqres.full
+	_scratch_xfs_db -x -c "inode ${inode}" -c "ablock ${loff}" -c "stack" -c "blocktrash -o 4 -x 32 -y $((blksz * 8)) -z ${FUZZ_ARGS}" >> $seqres.full
 	loff="$((loff + 1))"
 done
 
-- 
2.26.2

