[OpenAFS] Using volumes for daemons

Derek Atkins warlord@MIT.EDU
Wed, 28 Jun 2006 11:12:46 -0400


I wouldn't..  AFS really isn't designed for that usage model.

-derek

"Caskey L. Dickson" <caskey@technocage.com> writes:

> I'm curious as to whether you can use AFS volumes for the storage 
> locations of services like openldap, mysql and postgresql.  All three 
> use database files which are held open for long periods of time and 
> normally would require large amounts of local storage.
>
> I'm not looking for AFS to provide replication of the databases, just an 
> alternative to data being stored locally on quasi-stable disks.  We're 
> already moving 'home dir' type data to a set of AFS servers and would 
> like to leverage the pool of reliable, redundant disks we use for this, 
> for some of our services.
>
> If this is possible, are there any restrictions with regard to the local 
> cache size versus the largest file being accessed?  I understand the 
> files are stored/transferred in slices/chunks of 64KB or so, does this 
> mean that dirty chunks are sent back to the volume server similarly when 
> the cache fills up?  Even if the cache is, say 100M and the file is 1G?

-- 
       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
       warlord@MIT.EDU                        PGP key available