Sometimes g/648 fail to unmount dmerror with this error: umount: /mnt/xfstests/scratch: target is busy. Even worse, it will cause all later test cases fail as: mount: bad usage Try 'mount --help' for more information. check: failed to mount $SCRATCH_DEV using specified options Interrupted! So we shouldn't _fail directly if dmerror_unmount fails, use a while loop to try to make sure it's unmounted. Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx> --- tests/generic/648 | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tests/generic/648 b/tests/generic/648 index 83dd111d..218f207b 100755 --- a/tests/generic/648 +++ b/tests/generic/648 @@ -104,7 +104,7 @@ for i in $(seq 1 $((25 * TIME_FACTOR)) ); do wait > /dev/null 2>&1 ps -e | grep fsstress > /dev/null 2>&1 done - for ((i = 0; i < 10; i++)); do + for ((j = 0; j < 10; j++)); do test -e "$snap_aliveflag" || break sleep 1 done @@ -112,7 +112,11 @@ for i in $(seq 1 $((25 * TIME_FACTOR)) ); do # Mount again to replay log after loading working table, so we have a # consistent fs after test. $UMOUNT_PROG $loopmnt - _dmerror_unmount || _fail "iteration $i scratch unmount failed" + _dmerror_unmount > /dev/null 2>&1 + while [ $? -ne 0 ]; do + sleep 1 + _dmerror_unmount > /dev/null 2>&1 + done _dmerror_load_working_table if ! _dmerror_mount; then _metadump_dev $DMERROR_DEV $seqres.scratch.$i.md -- 2.31.1