[Lustre-devel] Moving forward on Quotas

Johann Lombardi johann at sun.com
Thu Jun 5 05:27:08 PDT 2008

On Thu, Jun 05, 2008 at 04:09:41AM -0700, Peter Braam wrote:
> Quota are determined by the owner of the file, not by the uid of the
> process.

In my understanding, the client is not aware of the server-side uid/gid and
the file owner returned to the client is translated too. Please let me know
if I misunderstood how the uid/gid mapping feature works.

> We have been propagating owners / gid of files from MDS to OSS for this
> reason.
> I don't understand the issue.

The problem is that the owner / group is propagated to the OSTs through the
client the first time it sends a bulk write rpc (by setting the
OBD_MD_FLUID/GID flags) and those identifiers - supplied by the client -
must be translated too.


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