Andrew Deason wrote: > On Fri, 9 Oct 2009 15:12:14 +0100 > Simon Wilkinson <[email protected]> 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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