[OpenAFS] Re: afs vs nfs

Derek Atkins warlord@MIT.EDU
Wed, 23 Nov 2005 11:22:23 -0500

"Neulinger, Nathan" <nneul@umr.edu> writes:

> Something as simple as having an alternative namei that would look the
> same down below, but would have the top level directory be the RW volume
> id corresponding to whatever data is being stored.

Um, the top-level directory (well, two top-level dirs) already is
(are) the volume id.  It's just encoded in base64, and split into
two sets of bits.  But it's still the volumeID.  E.g.


These are in two different volumes.

> This would allow the top level dirs and volume header to be backed up
> and restored as regular files. Granted you would not have the true
> snapshot like you can get with vos, but even that is subject to timing
> as far as high level file access goes. 

Current namei already gives you that, actually.

       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
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