Re: Weird behaviour with project quotas

[Emmanuel Florac <eflorac@intellique.com>]

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Le Fri, 29 Nov 2024 08:07:09 +1100
Dave Chinner <david@fromorbit.com> écrivait:

> > As far as I understand, and from my tests, on folders on which a
> > project quota is applied, either the available quota or the actually
> > avialable space should be reported when using "df".  
> 
> Only if you are using project quotas as directories quotas. i.e.
> the directory you are querying with df needs to have the
> XFS_DIFLAG_PROJINHERIT flag set on it for df to behave this way.

Interesting, and how is this set ? I basically set up quotas using
something like

xfs_quota -x -c 'project -s -p /mnt/raid/project1 10' /mnt/raid

xfs_quota -x -c "limit -p bhard=30000g 10" /mnt/raid


> > However on a
> > running system (Debian 12, kernel 6.1 Debian) I have incoherent
> > results:  
> 
> 32 bit or 64 bit architecture?

AMD64, the most common one.
 
> > The volume /mnt/raid is 100 TB and has 500GB free.
> > 
> > There are several folders like /mnt/raid/project1,
> > /mnt/raid/project2 etc with various quotas (20TB, 30TB, etc).  
> 
> Output of df and a project quota report showing usage and limits
> would be useful here.
> 
> Then, for each of the top level project directories you are querying
> with df, also run `xfs_io -rxc "stat" <dir>` and post the output.
> This will tell us if the project quota is set up correctly for df to
> report quota limits for them.
> 
> It would also be useful to know if the actual quota usage is correct
> - having the output of `du -s /mnt/raid/project1` to count the
> blocks and `find /mnt/raid/project1 -print |wc -l` to count the
> files in quota controlled directories. That'll give us some idea if
> there's a quota accounting issue.
> 

OK, I'll run these as soon as I have a connection to the system. There
seemed to be no error with the reported used space though, only
available remaining space in quota'ed directories; however df reports
actually available space for directories without quota set.


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   Emmanuel Florac     |   Direction technique
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