[Linux-cachefs] Re: [PATCH 5/6] NFS: Unify NFS superblocks per-protocol per-server [try #7]

[Trond Myklebust]

On Wed, 2006-03-08 at 20:30 +0000, David Howells wrote:
> The attached patch makes NFS share superblocks between mounts from the same
> server over the same protocol.

We want to make NFS share superblocks on a per-filesystem basis, rather
than forcing it into a per-server basis. Cachefs may like the latter,
but POSIX does not like a filesystem where inode numbers are not
guaranteed to be unique.
A unique per-server superblock also makes it hard to support features
like failover onto replicated filesystems and/or migration of individual
filesystems onto another server.

Cheers,
  Trond