[AFS3-std] [RPC Request] 64-bit volume IDs, quotas, and block usages

[Russ Allbery]

Jeffrey Altman <jaltman@secure-endpoints.com> writes:

> As such I believe any proposal to increase the size of the volumeId
> must be combined with a rationale for why the volumeId name space must
> be increased by growing the size of the volumeId.  From my perspective
> the volumeId space is sufficiently large.

windlord:~> vos examine ls.trip.www-liv1
ls.trip.www-liv1                 2005330094 RW       1793 K  On-line
    afssvr36.Stanford.EDU /vicepg 
    RWrite 2005330094 ROnly          0 Backup 2005330096 
    MaxQuota      10000 K 
    Creation    Wed Jun 17 19:59:22 2009
    Copy        Wed Jun 17 19:59:22 2009
    Backup      Sat Jun 20 01:25:48 2009
    Last Update Wed Jun 17 20:01:24 2009
    10 accesses in the past day (i.e., vnode references)

    RWrite: 2005330094    Backup: 2005330096
    number of sites -> 1
       server afssvr36.Stanford.EDU partition /vicepg RW Site 

It's not feeling particularly spacious to us, although that problem
would be solved in specific implementations by allowing volume IDs to
wrap.  (I think we looked at this a while back and decided that they
don't currently in OpenAFS.)

There was an old bug in Transarc AFS that could cause one to consume a
spectacular number of volume IDs.  I've heard of other sites with the
same problem.

-- 
Russ Allbery (rra@stanford.edu)             <http://www.eyrie.org/~eagle/>