[Dovecot] Dovecot ontop of glusterfs issue.

[Murray Trainer]

Hi Eliezer,

We had the same errors a few weeks ago.  Turned out the time on our NFS
server was out by over 30 secs as NTP wasn't setup correctly .  Looks like
the time on one of yours is out by about 250 secs (361-105).

Murray

-----Original Message-----
From: dovecot [mailto:dovecot-bounces at dovecot.org] On Behalf Of Eliezer
Croitoru
Sent: Wednesday, 21 May 2014 4:38 PM
To: dovecot at dovecot.org
Subject: [Dovecot] Dovecot ontop of glusterfs issue.

Hey,

I am testing Glusterfs as a storage backend for dovecot as a LDA and imap
server.
I have seen similar lines in the logs to these:
May 21 10:46:01 mailgw dovecot: imap(eliezer at ngtech.co.il): Warning: 
Created dotlock file's timestamp is different than current time
(1400658105 vs 1400658361): 
/home/vmail/ngtech.co.il/eliezer/Maildir/.Mailing_lists.ceph_users/dovecot-u
idlist
May 21 10:46:01 mailgw dovecot: imap(eliezer at ngtech.co.il): Error: 
Transaction log
/home/vmail/ngtech.co.il/eliezer/Maildir/dovecot.index.log: duplicate
transaction log sequence (2713)

The volume is mounted only by one server with ubutntu 14.04.
I have seen threads and posts about similar issue with nfs.
I want to try to debug the issue but note that with the same settings of the
server nfs worked fine but slower.
dovecot -n output:
http://pastebin.centos.org/9626/

The glusterfs is a replicated volume constructed of two bricks which is
mounted only on one dovecot server.
All three servers are using the same ntp pool and are synced.

Any direction is better then the state I am now.

Thanks,
Eliezer