Re: XFS / Quota Bug in 2.6.17.x and 2.6.18x

From: ProfiHost - Stefan Priebe
Date: Sat Jul 29 2006 - 03:58:08 EST


This only happens, if your partition is the root partition of the whole system and it is mounted read only on system start up. The pre barrier check for normal mount works without any problems.


Jan Engelhardt schrieb:
The crash only occurs if you use quota and IDE without barrier support.

I don't quite get this. I do use quota, and have barriers turned off (either explicitly or because the drive does not support it),
but yet no error message like you posted. Do I just have luck?

Heh, no - its more likely you just haven't needed to do a quotacheck
on a filesystem thats initially mounted readonly (like root often is).

Well I "sometimes" do that, i.e. intentionally turning off quota on the running system, to force a recheck on boot. The mount options essentially
are /bin/mount /dev/hda2 / -o ro,usrquota,grpquota and then /bin/mount / -o remount,rw
No breakage so far, which is why I wondered. Is it limited to a specific kernel version?

I'm guessing you had quota enabled from earlier barrier-unaware kernels
and quotacheck only needs to be run during that initial mount.

Jan Engelhardt
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