[OpenAFS] AFS suggestions

[David Bear]

On Wed, Jul 27, 2005 at 09:41:07PM +0200, Chris Huebsch wrote:
> On Wed, 27 Jul 2005, ERIC K. CHEU wrote:
> 
> >
> >thanks... I'm actually not a novice AFS administrator.  But my bosses have 
> >just asked me to ask what other people to provide for more redandant 
> >storage and for charge back model.
> >We are already going to have a raid 5 system implemented to hold our AFS 
> >volumes.  And my boss was trying to think of ways to make AFS volumes more 
> >redundant while at the same time being available for change (something 
> >that is hard to do when you only can make read-only replicas).  Now
> >if there were such a thing as read-write replicas, then that'd solve a lot
> >of our problems...
> 
> But there are not (yet). There are some strategies using ro-clones,
> which can be transformed to rw-volumes if worse things happen.

something I find intriguing is a program called rsnapshot. It uses
rsync and some other tools (gnu cp) to create time sliced snapshots.
They use hard links so that the N snapshots of M size don't occument
N X M space. Now, if openafs supported hardlinks.. this would be a
very efficient way of making a RO replica a near hot swappable clone
if the RW volume went away suddenly. Suggestions?

> 
> And a further hint from me: Do never trust Raid 5. The disks are like
> twins. They have the same histroy, they lived the same live, they die
> the same day.
> 
> 
> Chris
> -- 
> Chris Huebsch    www.huebsch-gemacht.de | TU Chemmnitz, Informatik, RNVS
> GPG-Encrypted mail welcome! ID:7F2B4DBA |   Str. d. Nationen 62, B204
>  Chemnitzer Linux-Tage 2006, 4.-5.Maerz |       D-09107 Chemnitz
>     http://chemnitzer.linux-tage.de/    |  +49 371 531-1377, Fax -1803
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info

-- 
David Bear
phone: 	480-965-8257
fax: 	480-965-9189
College of Public Programs/ASU
Wilson Hall 232
Tempe, AZ 85287-0803
 "Beware the IP portfolio, everyone will be suspect of trespassing"