[AFS3-std] Re: Hackathon Summary

[Jeffrey Altman]

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Andrew Deason wrote:
> On Fri, 9 Oct 2009 15:12:14 +0100
> Simon Wilkinson <sxw@inf.ed.ac.uk> wrote:
>
>> Generic Quotas
>> --------------
>>
>> Christof had raised the issue of providing a more generic quota
>> mechanism, which allows more flexible definitions of what quota might
>> be (rxosd would like to be able to apply a separate quota to files
>> under a certain size, for example)
>>
>> We discussed implementing this as a set of tag value pairs, with each
>> pair having a globally defined meaning. Individual tags need not be
>> implemented on every fileserver - there should be an RPC by which
>> clients can determine which tags a fileserver supports. We want to
>> implement this by revising existing RPCs which take quota values, and
>> use it to replace the quota values that those RPCs already contain.
>>
>> Christof will write a document describing this, but we won't block
>> the RPC refresh on it
>
> Upon reading this, I thought, why should we limit this to quotas? Should
> we have a more generic extensible volume metadata RPC that can be used
> for any volume-related purpose? I would imagine an xattr-like
> functionality at the volume level could be potentially useful for
> numerous things.
>   
I believe that is what is being described by implementation via a set of
tag-value pairs where the set of tag names can be queried.

Jeffrey Altman


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