[Gluster-users] glusterfs and postfix/dovecot

James Devine fxmulder at gmail.com
Tue Apr 10 16:00:46 UTC 2012

On Tue, Apr 10, 2012 at 3:42 AM, Jure Koren <jure.koren+gluster at uninet.si>wrote:

> On 09/04/12 16:22, James Devine wrote:
>> What mail storage type were you using?  I've been testing mdbox on
>> gluster and when I put a lot of load on it using more than one thread I see
>> lots of corruption problems, both in the index files which store flag
>> information and in the data storage also.  This doesn't happen on a local
>> filesystem but I can duplicate it with one dovecot server talking to one
>> gluster server.
> I am using maildir, as it is easier, beacuse each server writes new files
> into unique filenames so there aren't many locking issues. I have also
> enabled all the options for nfs storage in dovecots settings.
> The mail files are always ok, but I sometimes get corruptions in dovecot's
> temporary index files. When it happens I just delete those files as dovecot
> will recreate them.
> But I started to have some issues lately (with 2.3.4-2.3.6) on directories
> and I don't know the cause. I am currently testing a ospf solution so the
> connection between the nodes would be more stable. I have added a virtual
> ethernet adapter with a private ip address and network to both nodes in my
> afr setup and ospf makes sure that those are always accessible.
Yeah, maildir shouldn't have storage issues, my only concern there would be
small file access.  I'm setting up a test environment and I plan on
comparing mail storage performance between the two storage types as well as
a number of other factors.  Importing gluster via nfs doesn't seem to have
locking/caching issues accessing any of the files, at least not with 2
clients running postal.
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