[Lustre-devel] Moving forward on Quotas

Peter Braam Peter.Braam at Sun.COM
Thu Jun 5 06:45:36 PDT 2008

Well, this protocol hasn't been published yet; why not include the server
side uid / gid then?

But more seriously, how is this encoded in such a way that the OST can trust
the information - it must be in the capability too?


On 6/5/08 5:27 AM, "Johann Lombardi" <johann at sun.com> wrote:

> 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.
> Johann
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