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IDProjectCategoryView StatusLast Update
0000431Rocky-Linux-9kernelpublic2022-10-04 08:33
ReporterTaketo Kabe Assigned To 
Status newResolutionopen 
Platformx86_64OSRocky LinuxOS Version9
Summary0000431: Writing to ext3 filesystem created by CentOS 6 will freeze the whole system
DescriptionThe release kernel freezes up when writing to ext3 filesystem created by CentOS 6.

When the problem occurs,
- the shell responds with [Enter] key, but
- anything involving disk I/O will not return. (ls, sync etc)
- there are no kernel traceback.

Kernels with problem:

Kernels with no problem observed:
kernel-5.14.0-168.el9.x86_64 (CentOS Stream 9)
Steps To ReproduceReproduction:

- Install a CentOS 6 machine. 6.10 suffices.
  Install using "ext3" filesystem as the root partition.
  Use the installed image as the test disk, or mkfs.ext3 a separate disk for test disk.

- Mount the test disk on Rocky 9 machine:
mount /dev/sdb3 /mnt

- Copy over a large directory, such as kernel build directory:
  rsync -av -H /mnt/var/tmp/
  cp -v -pr /mnt/var/tmp/

- After a couple of minutes, the copy will halt.
Ctrl+C could be sent, but often no feedback.
Additional InformationNobody uses ext3 nowadays, so the fix priority may be low.

On one occation I managed to get a ps axlww of the process:

[kabe@rocky9 ~]$ ps axlww|grep rsync
0 1001 1213 1167 20 0 238612 11172 conges D+ pts/0 0:00 rsync -av -H /home/kabe/r9builds/kernel-r9 /mnt/
1 1001 1214 1213 20 0 238236 9388 do_sel S+ pts/0 0:00 rsync -av -H /home/kabe/r9builds/kernel-r9 /mnt/
1 1001 1215 1214 20 0 238820 8300 do_sel S+ pts/0 0:00 rsync -av -H /home/kabe/r9builds/kernel-r9 /mnt/
0 1001 1246 1222 20 0 221680 2396 pipe_r S+ pts/1 0:00 grep --color=auto rsync

kernel-5.14.0-168.el9.x86_64 (CentOS Stream 9) seems to have lots of
ext4 related fixes since kernel-5.14.0-70.
It may be fixed on next major release...
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Issue History

Date Modified Username Field Change
2022-10-04 08:33 Taketo Kabe New Issue