Re: [PATCH 10/18] nfsd: implement pNFS layout recalls

This bothers me a little: cl_addr is just the address that the
exchange_id came from.  In theory there's no one-to-one relationship
between NFSv4 clients and IP addresses.  Is it likely the iscsi traffic
could use a different interface than the MDS traffic?

If this is the best we can do, then maybe this should at least be
documented.

The pNFS block fencing protocol bothers me a lot, it seems like very
little thought went into that part of the standard.

I proposed a new SCSI layout type that fixes those issues on the
NFSv4 WG list, but there's been zero interest in it:

http://www.ietf.org/mail-archive/web/nfsv4/current/msg13469.html