[Lustre-devel] Moving forward on Quotas

Peter Braam Peter.Braam at Sun.COM
Thu Jun 5 04:09:41 PDT 2008

Quota are determined by the owner of the file, not by the uid of the

We have been propagating owners / gid of files from MDS to OSS for this

I don't understand the issue.


> I've discussed with Fanyong and imo, the uid mapping issue is clearly a
> showstopper for now. On HEAD, the client-side uid/gid packed by GSS is
> translated to a sevice-side uid/gid. This mapping exists on the MDS, but not
> on the OSSs. The problem is that for quotas, OSSs must be aware of this
> mapping.
> We should find a solution to this problem (not straightforward) which needs to
> be addressed anyway even for DMU support.
> In general, I don't think that much of this work will be "throw away".
> Cheers,
> Johann

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