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Re: is quotacheck fast with xfs?

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Subject: Re: is quotacheck fast with xfs?
From: Louis-David Mitterrand <vindex+lists-xfs@xxxxxxxxxxx>
Date: Fri, 6 Oct 2006 09:52:26 +0200
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On Fri, Oct 06, 2006 at 08:15:01AM +1000, Nathan Scott wrote:
> On Thu, 2006-10-05 at 22:42 +0200, Louis-David Mitterrand wrote:
> > 
> > We have a 500GB mail server with 200 users presently with reiserfs. At 
> > boot time quotacheck takes close to one hour.
> > 
> > Would quotacheck be faster on xfs?
> 
> Yes, typically - XFS uses its internal "bulkstat" code to speed up
> the inode scanning process (and it only needs to be done once, on the
> initial mount, and then XFS "remembers" that the check has been done,
> for subsequent mounts and it journals all updates to the quota files),
> whereas the userspace quotacheck(1) program is filesystem independent
> (IIRC) and doesn't implement such optimisations.
> 
> FWIW, quotacheck time is a function of the number of inodes in the
> filesystem, not the number of users.

What you are saying is that userspace quotacheck is not needed with xfs 
(or only once)?


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