[Dovecot] Dovecot v1.1.alpha4 problem

[Vladislav Malyshkin]

Timo,
this is very hard for me to do. Every time this problem starts
people get panicked, immediately call me, call others.
This did happen twice in the last 24 hours.
Typically most active user gets his mbox locked after 10-12 hours.
I tried to reproduce the problem on another mail server
(where a problem does not make people panic and call me at night) - no 
luck,
because this server does not have such a large mail traffic.
I downgraded main server to dovecot 1.0.5. Looks OK for now.
I can send you /var/log/maillog but there is no much information there,
only about postfix not able to get exclusive lock of user mailbox.
Also, this may somekind help, the imap process taking lock can not be 
killed by -15 signal, only by -9.
Vladislav


Timo Sirainen wrote:
> On Thu, 2007-09-13 at 00:48 -0400, Vladislav Malyshkin wrote:
>   
>> The problem persists with mbox inbox folders in v1.1.alpha4.
>> I get a stalled process "imap" which can not be killed by
>> killall imap
>> only by
>> killall -9 imap
>> This process takes a lock of user mailbox thus prevents the user to 
>> read/send mail.
>>     
>
> Could you get gdb backtrace of those processes (a few times if they're
> different)?
>
> gdb attach <imap process pid>
> bt
>
> (if attach doesn't work, replace it with path to imap binary)
>
>