[Lustre-discuss] Setting up quotas after the fact

[Sebastien Piechurski]

Just to confirm what Johann said, I ran 2 weeks ago a complete
quotacheck on a 600TB filesystem with ~50 millions inodes in
approximately 5 minutes too. The filesystem is distributed across 28 OSS
(168 OSTs of 3.6TB each).
So you should be able to run your quotacheck quite quickly. 

Version was 1.8.5.

> -----Original Message-----
> From: lustre-discuss-bounces at lists.lustre.org 
> [mailto:lustre-discuss-bounces at lists.lustre.org] On Behalf Of 
> David Noriega
> Sent: jeudi 10 mars 2011 19:31
> To: lustre-discuss at lists.lustre.org
> Subject: Re: [Lustre-discuss] Setting up quotas after the fact
> 
> Well we are running lustre 1.8.4, so thats great to hear. Thanks
> 
> On Thu, Mar 10, 2011 at 12:15 PM, Johann Lombardi 
> <johann at whamcloud.com> wrote:
> > On Thu, Mar 10, 2011 at 11:51:44AM -0600, David Noriega wrote:
> >> I've been reading up on setting up quotas and looks like 
> luster needs
> >> to be shut down for that as it scans the entire 
> filesystem. The thing
> >
> > The problem is that accounting can be wrong if files/blocks 
> are allocated/freed during the scan.
> >
> >> is we already have ours up and running and with quite a 
> bit of data on
> >> it. So any idea on how to estimate how long it would be to setup
> >> quotas on lustre?
> >
> > quotacheck has been greatly improved in 1.8.2 (see bugzilla 
> ticket 19763 for more information). As an example, quotacheck 
> takes approximately 5min to complete when run against a 3.4TB 
> filesystem (2 OSTs) which is 87% full.
> >
> > Cheers,
> > Johann
> >
> 
> 
> 
> -- 
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