Re: [nfsv4] [FedFS] Multiple FSL resolution

[Nicolas Williams <[e-mail]>]

On Thu, Dec 10, 2009 at 11:05:23AM -0500, Everhart, Craig wrote:
> As a quick shot, I believe that section 3.2, step 5, is in error, at
> least for the case of NFSv4{,.1}, which is the domain of discourse here.
> All the FSL's for a given FSN should be converted and sent to the file
> server client, and the client can choose among them.
> 
> There are possible opportunities for introduction of policy-controlled
> behavior if there are more FSL's than a given server can convert or than
> it can communicate to the file server client, but the idea is that the
> file servers take all locations from the NSDB and present them all to
> the client for its choice.

Indeed, you might not want the server to take too long resolving a
junction.  So if there's 10 FSLs the server might return as many as it
can resolve in, say, 10 seconds.

An implementation guideline should be included encouraging server
implementors to make junction resolution as parallel as possible.

Nico
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