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_check_xfs_filesystem: sync fs before running scrub

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Tests can create a scenario in which a call to syncfs() issued at the end of
the execution of the test script would return an error code. xfs_scrub
internally calls syncfs() before starting the actual online consistency check
operation. Since this call to syncfs() fails, xfs_scrub ends up returning
without performing consistency checks on the test filesystem. This can mask a
possible on-disk data structure corruption.

To fix the above stated problem, this commit invokes syncfs() prior to
executing xfs_scrub.

Suggested-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
This commit is contained in:
Chandan Babu R
2021-03-09 10:31:12 +05:30
committed by Eryu Guan
parent 9fb30a9500
commit 1066be0dd6
1 changed files with 11 additions and 0 deletions
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common/xfs
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@@ -503,6 +503,17 @@ _check_xfs_filesystem()
# Run online scrub if we can.
mntpt="$(_is_dev_mounted $device)"
if [ -n "$mntpt" ] && _supports_xfs_scrub "$mntpt" "$device"; then
# Tests can create a scenario in which a call to syncfs() issued
# at the end of the execution of the test script would return an
# error code. xfs_scrub internally calls syncfs() before
# starting the actual online consistency check operation. Since
# such a call to syncfs() fails, xfs_scrub ends up returning
# without performing consistency checks on the test
# filesystem. This can mask a possible on-disk data structure
# corruption. Hence consume such a possible syncfs() failure
# before executing a scrub operation.
$XFS_IO_PROG -c syncfs $mntpt >> $seqres.full 2>&1
"$XFS_SCRUB_PROG" $scrubflag -v -d -n $mntpt > $tmp.scrub 2>&1
if [ $? -ne 0 ]; then
_log_err "_check_xfs_filesystem: filesystem on $device failed scrub"