[OpenAFS-devel] Re: Initial implementation of RestrictedQuery, please comment

[Jeffrey Hutzelman]

On Wed, 2014-03-19 at 00:21 -0400, Jeffrey Altman wrote:

>  2. FIDs can be exposed from the cache manager and the volume
>     can be accessed by the volume ID.   This is what happens on
>     Windows where the afs redirector driver does not access file
>     data by cell name, volume name, vnode but instead queries the
>     cache manager by File ID.

At least in theory, this can happen in UNIX, too.  Entries in the vnode
cache are indexed by VenusFID (cell,volume,vnode,uniq), and can refer to
volumes which have been evicted from the volume cache, if there is
sufficient pressure.