This test tests log recovery by kicking off fstress on the scratch fs, then switching out the underlying the device with dm-error to see what happens when the disk goes down. But when there is an external log device writes to the log device still succeed, while writes to the rest of the file system fail, and this leads to file system corruption. So skip this test when there is an external log. Signed-off-by: Theodore Ts'o <tytso@xxxxxxx> --- tests/generic/475 | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tests/generic/475 b/tests/generic/475 index c426402e..43c26303 100755 --- a/tests/generic/475 +++ b/tests/generic/475 @@ -34,6 +34,10 @@ _require_scratch _require_dm_target error _require_command "$KILLALL_PROG" "killall" +if test "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ; then + _notrun "Cannot have external log device" +fi + echo "Silence is golden." _scratch_mkfs >> $seqres.full 2>&1 -- 2.31.0