[Dovecot] distributed mdbox

[James Devine]

On Wed, Mar 21, 2012 at 10:05 AM, Timo Sirainen <tss at iki.fi> wrote:

> On 21.3.2012, at 17.56, James Devine wrote:
>
> > Anyone know how to setup dovecot with mdbox so that it can be used
> through
> > shared storage from multiple hosts?  I've setup a gluster volume and am
> > sharing it between 2 test clients.  I'm using postfix/dovecot LDA for
> > delivery and I'm using postal to send mail between 40 users.  In doing
> > this, I'm seeing these errors in the logs
>
> Dovecot assumes that the filesystem behaves the same way as regular local
> filesystems.
>
> > Mar 21 09:36:29 test-gluster-client2 dovecot: lda(testuser34): Error:
> Fixed
> > index file /mnt/testuser34/mdbox/storage/dovecot.map.index:
> messages_count
> > 272 -> 271
> > Mar 21 09:36:30 test-gluster-client2 dovecot: lda(testuser28): Error: Log
> > synchronization error at seq=4,offset=3768 for
> > /mnt/testuser28/mdbox/storage/dovecot.map.index: Append with UID 516, but
> > next_uid = 517
>
> Looks like gluster doesn't fit that assumption. So, the solution is the
> same as with NFS: http://wiki2.dovecot.org/Director
>
>
What filesystem mechanisms might not be working in this case?