dovecot - Jan 2014 - Dsync Errors

Greetings,

I've seen something like this in another thread, about a month ago, but
we're running into this error pretty frequently when we run dsync backup.

Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0 [0x39ccc5f1c0] ->
/usr/lib64/dovecot/libdovecot.so.0(default_fatal_handler+0x35) [0x39ccc5f2a5]
-> /usr/lib64/dovecot/libdovecot.so.0 [0x39ccc5ebb3] ->
dsync(dsync_brain_mailbox_tree_sync_change+0x41c) [0x42cc0c] ->
dsync(dsync_brain_recv_mailbox_tree_deletes+0x10a) [0x42be7a] ->
dsync(dsync_brain_run+0x4fc) [0x429cdc] -> dsync [0x42885b] -> dsync
[0x4119ff] -> dsync(doveadm_mail_try_run+0x269) [0x411e09] ->
dsync(main+0x358) [0x41a2c8] -> /lib64/libc.so.6(__libc_start_main+0xf4)
[0x3f4281d994] -> dsync [0x4111c9]

We're running Dovecot 2.2.4 and the dsync command is this:
dsync -u <username> backup
maildir:/mnt/backups/<period>/<domain>/<username>

When this happens to a particular users account I delete the backup and let it
rebuild, which works for awhile, but then it happens again, and it seems to
happen to particular users.

Can you point me in the right direction to start troubleshooting this?

Thanks.

-- 
--Asai

On 2014-01-24 10:51 AM, Asai <asai at globalchangemusic.org>
wrote:
> We're running Dovecot 2.2.4 and the dsync command is this:
> dsync -u <username> backup 
> maildir:/mnt/backups/<period>/<domain>/<username>
>
> When this happens to a particular users account I delete the backup 
> and let it rebuild, which works for awhile, but then it happens again, 
> and it seems to happen to particular users.
>
> Can you point me in the right direction to start troubleshooting this?
The first thing to do when experiencing problems like this is make sure 
you are on the current version of whatever point release you are 
running. In your case that would be 2.2.10. Then if you still experience 
the problem, come back and re-ask...

If you are unable to update due to some kind of 'LTS' restrictions 
enforced by your chosen OS, then your first line of support should be 
from them - otherwise, what is the point of using that OS?

Also, they would be the ones that would have to back-port any fixes from 
more recent releases to your 'stable' version.

-- 

Best regards,

Charles