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

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Message-ID: <44CB158B.1050209@profihost.com>
Date:	Sat, 29 Jul 2006 10:00:11 +0200
From:	ProfiHost - Stefan Priebe <s.priebe@...fihost.com>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
CC:	Nathan Scott <nathans@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alexey Dobriyan <adobriyan@...il.com>
Subject: Re: XFS / Quota Bug in  2.6.17.x and 2.6.18x

Hi!

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.

Stefan

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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