[Dovecot] dovecot corrupted transaction log

[John Fawcett]

On 13/06/13 08:50, John Fawcett wrote:
> On 13/06/13 04:31, Timo Sirainen wrote:
>> On Tue, 2013-06-11 at 00:34 +0200, John Fawcett wrote:
>>> Hi I came across this error which happend immedately after a mail
>>> delivery to the inbox. Should I look for the problem externally to
>>> dovecot (ie. file system, operating system) or within dovecot? I never
>>> saw this error before installing 2.2.1, with 2.2.2 I seemed to get even
>>> more of them so currently back on 2.2.1
>>>
>>> Jun 11 00:00:05 rosalia dovecot: imap(myemail at mydomain): Error:
>>> Corrupted transaction log file
>>> /var/vmail/mydomain/myemail at mydomain/dovecot.index.log seq 311: file
>>> size shrank (1184 < 1304) (sync_offset=1304)
>> Are you using NFS or some other cluster filesystem with multiple
>> servers? If yes, see http://wiki2.dovecot.org/NFS. If not, show doveconf
>> -n and describe the setup more.
>>
>>
> TImo
>
> thanks for your response. There is no NFS involved. The file system
> seems to  be reiserfs (as reported by df -T) thogh I wonder why
> fsck reports it would use fsck.ext2 (which I did not run).
>
> It is a single server vpn container hosting a few sites and
> low volume mail service. The operating system is centos 6.4
>
> The setup is with postfix, amavisd and dovecot using sieve. Dovecot and
> sieve are built from source
>
> Clients are roundcube and usual mail clients mainly thunderbird.
>
> I cannot link the errors to anything specific, except that they started
> happening 5 minutes after upgrade to 2.2.1 from 2.1.5. The error happens on
> multiple mailboxes. I never saw the error prior to that, looking at logs
> back to
> version 2.1.7.
>
> Below is the dovecot -n output
>
> Thanks
> John
>
> dovecot -n
> # 2.2.1: /etc/dovecot/dovecot.conf
> # OS: Linux 2.6.18-028stab092.1 x86_64 CentOS release 6.4 (Final)
> auth_mechanisms = plain login
> dict {
>   expire = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
>   quota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
> }
> first_valid_uid = 200
> listen = 80.237.194.64
> mail_plugins = quota expire
> managesieve_notify_capability = mailto
> managesieve_sieve_capability = fileinto reject envelope
> encoded-character vacation subaddress comparator-i;ascii-numeric
> relational regex imap4flags copy include variables body enotify
> environment mailbox date ihave
> passdb {
>   args = /etc/dovecot/dovecot-sql.conf.ext
>   driver = sql
> }
> plugin {
>   expire = Trash
>   expire2 = Trash/*
>   expire3 = Spam
>   expire4 = Postmaster
>   expire_dict = proxy::expire
>   fts = squat
>   fts_squat = partial=4 full=10
>   quota = dict:User quota::proxy::quota
>   quota_rule = *:storage=1G
>   quota_rule2 = Trash:storage=+100M
>   sieve = ~/sieve/.dovecot.sieve
>   sieve_dir = ~/sieve
> }
> protocols = imap pop3 lmtp sieve
> service auth-worker {
>   user = $default_internal_user
> }
> service auth {
>   unix_listener auth-userdb {
>     group = mail
>     mode = 0660
>   }
> }
> service dict {
>   unix_listener dict {
>     group = mail
>     mode = 0660
>   }
> }
> service lmtp {
>   unix_listener /var/spool/postfix/private/dovecot-lmtp {
>     group = postfix
>     mode = 0660
>     user = postfix
>   }
> }
> ssl_cert = </etc/ssl/extcerts/mail.erba.tv.dovecot-bundle.crt
> ssl_key = </etc/ssl/extcerts/mail.erba.tv.dovecot.nopass.key
> userdb {
>   args = /etc/dovecot/dovecot-sql.conf.ext
>   driver = sql
> }
> protocol lmtp {
>   mail_plugins = quota expire sieve
> }
> protocol lda {
>   mail_plugins = quota expire sieve
> }
> protocol imap {
>   mail_plugins = quota expire imap_quota fts fts_squat
> }
>
>
The log corruptions are continuing, I now have 2.2.4 installed. They always
seem to happen in proximty to a mail delivery.

Is there anything that anyone can suggest for how to get
a step closer to diagnoising the cause? Is there some debugging I can
put on that would be useful?

Thanks
John