Hi,
Recently, I hit lots of fstests cases fail on overlayfs (xfs underlying, no
specific mount options), e.g.
FSTYP -- overlay
PLATFORM -- Linux/s390x s390x-xxxx 6.12.0-rc4+ #1 SMP Fri Oct 25 14:29:18 EDT 2024
MKFS_OPTIONS -- -m crc=1,finobt=1,rmapbt=0,reflink=1,inobtcount=1,bigtime=1 /mnt/fstests/SCRATCH_DIR
MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 /mnt/fstests/SCRATCH_DIR /mnt/fstests/SCRATCH_DIR/ovl-mnt
generic/294 [failed, exit status 1]- output mismatch (see /var/lib/xfstests/results//generic/294.out.bad)
--- tests/generic/294.out 2024-10-25 14:38:32.098692473 -0400
+++ /var/lib/xfstests/results//generic/294.out.bad 2024-10-25 15:02:34.698605062 -0400
@@ -1,5 +1,5 @@
QA output created by 294
-mknod: SCRATCH_MNT/294.test/testnode: File exists
-mkdir: cannot create directory 'SCRATCH_MNT/294.test/testdir': File exists
-touch: cannot touch 'SCRATCH_MNT/294.test/testtarget': Read-only file system
-ln: creating symbolic link 'SCRATCH_MNT/294.test/testlink': File exists
+mount: /mnt/fstests/SCRATCH_DIR/ovl-mnt: fsconfig system call failed: overlay: No changes allowed in reconfigure.
+ dmesg(1) may have more information after failed mount system call.
...
(Run 'diff -u /var/lib/xfstests/tests/generic/294.out /var/lib/xfstests/results//generic/294.out.bad' to see the entire diff)
Ran: generic/294
Failures: generic/294
Failed 1 of 1 tests
Similar failures happened on g/294, g/306, g/417, g/599, overlay/035,
o/103~109, o/114, etc.
They all looks like related with new mount APIs of util-linux package.
Not sure if this's an issue of overlay, or overlay test cases, or new mount.
So report to get more attention/review, as some new linux distributions might
start to use new util-linux with new mount APIs.
Thanks,
Zorro
