[pnfs] [PATCH 0/2] minorvers option

[Sager, Mike]

(sorry if this appears twice)

These patches add a minorvers option to mount for filesystem type nfs4.
For example:

mount -t nfs4 -o minorvers=0 server:/path /mnt

minorvers defaults to 1.  I went with "minorvers" instead of "nfsvers"
(or "vers") partly because nfsvers isn't a valid option for type nfs4
but mostly because nfsvers is used for major versions.

One sidenote.  If the client tries to mount 4.1 against a 4.0 server, it
won't step back and try 4.0 for now (hopefully soon).  In this case, the
mount actually hangs as there seems to be some recovery issues on the
client when something goes wrong (I've seen this in other instances as
well).  I'll take a look.