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Bug
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Resolution: Unresolved
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Undefined
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None
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False
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False
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None
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rhel-se-kernel
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we hit this on 9.2 :
FSTYP -- xfs (non-debug) PLATFORM -- Linux/ppc64le rdma-cert-03-lp9 5.14.0-284.154.1.el9_2.ppc64le #1 SMP Fri Jan 16 00:37:12 EST 2026 MKFS_OPTIONS -- -f /dev/loop1 MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 /dev/loop1 /mnt/fstests/SCRATCH_DIR generic/388 _check_xfs_filesystem: filesystem on /dev/loop1 is inconsistent (r) (see /var/lib/xfstests/results//generic/388.full for details) Ran: generic/388 Failures: generic/388 Failed 1 of 1 tests
a leftover CoW extent apparently :
_check_xfs_filesystem: filesystem on /dev/loop1 is inconsistent (r)
*** xfs_repair -n output ***
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- zero log...
- scan filesystem freespace and inode maps...
leftover CoW extent (3/469002) len 26
- found root inode chunk
Phase 3 - for each AG...
- scan (but don't clear) agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
- agno = 2
- agno = 3
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
- check for inodes claiming duplicate blocks...
- agno = 0
- agno = 1
- agno = 2
- agno = 3
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
- traversing filesystem ...
- traversal finished ...
- moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
No modify flag set, skipping filesystem flush and exiting.
*** end xfs_repair output
filesystem indeed seems unstable:
[ 3915.639915] loop1: writeback error on inode 1786312, offset 65536, sector 1789216 [ 3915.639930] loop1: writeback error on inode 26869912, offset 1114112, sector 17580800 [ 3915.639903] XFS (loop1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xf8/0x160 [xfs] (fs/xfs/xfs_fsops.c:504). Shutting down filesystem. [ 3915.639936] loop1: writeback error on inode 18643688, offset 28692480, sector 12433968 [ 3915.639946] loop1: writeback error on inode 26869912, offset 50860032, sector 17594432 [ 3915.639964] loop1: writeback error on inode 1781551, offset 50167808, sector 2002744 [ 3915.639975] XFS (loop1): Please unmount the filesystem and rectify the problem(s) [ 3915.639991] loop1: writeback error on inode 18643679, offset 111276032, sector 12596672 [ 3915.640006] loop1: writeback error on inode 18643679, offset 28499968, sector 12455176 [ 3915.640037] loop1: writeback error on inode 26828078, offset 16773120, sector 17594264
maybe some ENOSPC condition as backing storage for this is a file, unclear
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