Hi all,
I was using the (x)fstest utility on the Kernel 5.11 to try to
reproduce some xfs-related issues:
INFO: task xfs-conv/dm-3:1360 blocked for more than 120 seconds.
Workqueue: xfs-conv/dm-3 xfs_end_io [xfs]
Call Trace:
__schedule+0x44c/0x8a0
schedule+0x4f/0xc0
xlog_grant_head_wait+0xb5/0x1a0 [xfs]
xlog_grant_head_check+0xe1/0x100 [xfs]
When I realized that xfs test n. 311 was passing correctly but every
further attempt to use the block device (e.g. mount it) was failing.
The issue is reproducible after reboot.
Test passed:
./check xfs/311
FSTYP -- xfs (non-debug)
PLATFORM -- Linux/x86_64 test 5.11.0-1021-aws
#22~20.04.2-Ubuntu SMP Wed Oct 27 21:27:13 UTC 2021
MKFS_OPTIONS -- -f /dev/xvdz
MOUNT_OPTIONS -- /dev/xvdz /home/test/z
xfs/311 25s ... 25s
Ran: xfs/311
Passed all 1 tests
Fail:
# mount /dev/xvdz /home/test/z/
mount: /home/test/z: /dev/xvdz already mounted or mount point busy.
[ 2222.028417] /dev/xvdz: Can't open blockdev
lsof does not show anything that is using either /dev/xvdz or /home/test/z
Any idea why is this happening?
The `xlog_grant_head_wait` race issue has been resolved in a later
Kernel version, am I right?
Best regards,
Andrea
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