[Gluster-users] GlusterFS on mailservers

Stephan von Krawczynski skraw at ithnet.com
Mon Nov 15 14:47:13 UTC 2010

On Mon, 15 Nov 2010 06:25:23 -0800
Craig Carl <craig at gluster.com> wrote:

> On 11/15/2010 04:57 AM, Stephan von Krawczynski wrote:
> > Hi all,
> >
> > I just read this one on the dovecot web:
> > -------------------------------------------------------
> > FUSE / GlusterFS
> >
> > FUSE caches dentries and file attributes internally. If you're using multiple
> > GlusterFS clients to access the same mailboxes, you're going to have problems.
> > Worst of these problems can be avoided by using NFS cache flushes, which just
> > happen to work with FUSE as well:
> >
> > mail_nfs_index = yes
> > mail_nfs_storage = yes
> >
> > These probably don't work perfectly.
> > --------------------------------------------------------
> >
> > Can someone comment on that? Does anybody use glusterfs as a storage for
> > mailboxes/mailfolders ?
> >
> Stephan -
>     Dovecot has been a challenge in the past. We don't specifically test 
> with it here, if you are interested in using it with Gluster I would 
> suggest testing with 3.1.1, and always keep the index files local, that 
> makes a big difference.
> Thanks,
> Craig

Well, Craig, I cannot follow your advice as these are 32 bit clients and AFAIK
you said 3.1.1 is not expected to be used in such an environment.
Really quite a lot of interesting setups for glusterfs turn around mail
servers, I judge it to be a major deficiency if the fs cannot be used for such
purposes. You cannot expect voting for glusterfs if there are other options
that have no problems with such a standard setup. I mean is there something
more obvious than mailservers for such a fs?
Honestly, I got the impression that you're heading away from the mainstream fs
usage to very special environments and usage patterns.
I feel very sorry about that because 2.X looked very promising. But I did not
find a single setup where 3.X could be used at all.

> -->
> Craig Carl
> Senior Systems Engineer
> Gluster


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