nfsv4 server patches and status

[J. Bruce Fields]

On Tue, Jul 10, 2007 at 11:08:38AM -0400, Jeff Layton wrote:
> I've been looking over this problem a bit and have a sparse few
> brainstorming notes in the following RH BZ:
> 
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=237108
> 
> I've checked out Bryce's work above. I'm curious as to why he decided
> to use a loopback mount here rather than something simple like tmpfs?
> In some cursory checking, tmpfs seems to work fine when exported with a
> fsid, and for this we know it would be exported with fsid=0.

It would be nice if we could use something like tmpfs instead.  Is there
any way to get it to give out stable filehandles?  We could just declare
the filehandles to be volatile, but I don't think clients deal well with
volatile filehandles in practice.

We don't really need to handle renames on the pseudofilesystem, so it'd
be sufficient if it'd just give us the same filehandle as long as the
path name stayed the same.

--b.