From: Darrick J. Wong <djwong@xxxxxxxxxx>
Zorro complained that the next patch caused him a regression:
generic/251 249s ... [failed, exit status 1]- output mismatch (see /root/git/xfstests/results//generic/251.out.bad)
--- tests/generic/251.out 2022-04-29 23:07:23.263498297 +0800
+++ /root/git/xfstests/results//generic/251.out.bad 2023-10-22 14:17:07.248059405 +0800
@@ -1,2 +1,5 @@
QA output created by 251
Running the test: done.
+5838a5839
+> aa60581221897d3d7dd60458e1cca2fa ./results/generic/251.full
+!!!Checksums has changed - Filesystem possibly corrupted!!!\n
...
(Run 'diff -u /root/git/xfstests/tests/generic/251.out /root/git/xfstests/results//generic/251.out.bad' to see the entire diff)
Ran: generic/251
Failures: generic/251
Failed 1 of 1 tests
The next patch writes some debugging information into $seqres.full,
which is a file underneat $RESULT_BASE. If the test operator does not
set RESULT_BASE, it will be set to a subdir of $here by default. Since
this test also snapshots the contents of $here before starting its loop,
any logging to $seqres.full on such a system will cause the post-copy
checksum to fail due to a mismatch.
Fix all this by copying $here to $SCRATCH_DEV and checksumming the copy
before the FITRIM stress test begins to avoid problems with $seqres.full.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
tests/generic/251 | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tests/generic/251 b/tests/generic/251
index 8ee74980cc..3b807df5fa 100755
--- a/tests/generic/251
+++ b/tests/generic/251
@@ -130,7 +130,13 @@ function run_process() {
}
nproc=20
-content=$here
+
+# Copy $here to the scratch fs and make coipes of the replica. The fstests
+# output (and hence $seqres.full) could be in $here, so we need to snapshot
+# $here before computing file checksums.
+content=$SCRATCH_MNT/orig
+mkdir -p $content
+cp -axT $here/ $content/
mkdir -p $tmp
