Cyrus 2.3 on shared filesystems

[Ken Murchison]

Attila Nagy wrote:

> Ken Murchison wrote:
> 
>> In a standard config, the mailboxes.db on each IMAP server only 
>> contains In a unified config, the master mailboxes.db is located on 
>> the MUPDATE In a replicated config, the master mailboxes.db is located 
>> on the 
> 
> Thanks a lot, this enlightened my mind.
> 
> Replicated Murder seems to be a good thing if you have a cluster file 
> systems (you have mentioned GFS, QFS and CXFS, does anybody have 
> experiences with them?). I guess NFS still doesn't come into the 
> picture, because of the mmap behaviour...

The client that I wrote the replicated code for is using Sun's QFS.  The 
project is currently on hold because of locking issues with QFS.  I know 
Sun has been working with them, but I don't know where this stands.

I haven't tested SGI's CXFS with Cyrus yet, but it works very well in 
high-end video and post-production environments, so I don't think it 
would have a problem with Cyrus.  Last I checked, CXFS still required an 
IRIX box to be the meta-data master for the CXFS cluster.  I'm not sure 
if they have the meta-data master running on Linux yet, although the 
client code has been on Linux for a while.

I've never used GFS, so I don't know if it handles file locking and 
memory mapping sufficiently for Cyrus.

-- 
Kenneth Murchison     Oceana Matrix Ltd.
Software Engineer     21 Princeton Place
716-662-8973 x26      Orchard Park, NY 14127
--PGP Public Key--    http://www.oceana.com/~ken/ksm.pgp
---
Cyrus Home Page: http://asg.web.cmu.edu/cyrus
Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html