[Dovecot] Assertion failed

[Jeff A. Earickson]

FWIW, we see this assert on rare occasions.  It has never caused any
issues.  Our imap server runs under very heavy loads (> 30) at times.
Our setup: Solaris 9, mbox, imap and imaps only, beta7.

Jeff Earickson
Colby Colllege

On Tue, 2 May 2006, Chris Wakelin wrote:

> Date: Tue, 02 May 2006 13:19:31 +0100
> From: Chris Wakelin <c.d.wakelin at reading.ac.uk>
> To: Jonathan Knight <jonathan at cs.keele.ac.uk>
> Cc: dovecot at dovecot.org
> Subject: Re: [Dovecot] Assertion failed
> 
> Is this happening with all users, or just a significant minority that
> didn't include your testers?
>
> If it happens to a minority, could you send us/me an anonymised copy of
> a (hopefully small) failing mbox (there's a tool provided in
> http://www.dovecot.org/tools/mboxcrypt.pl for doing this) and I'll try
> opening it with our Dovecot.
>
> Did you compile Dovecot yourself or use a package? If the former, what
> configure options did you use?
>
> Best Wishes,
> Chris
>
> Jonathan Knight wrote:
>>
>> We're in a bit of a panic here as we're getting a lot of errors along
>> the lines of:
>>
>> May  2 12:39:00 lenny dovecot: IMAP(XXXXX): file mbox-sync-rewrite.c:
>> line 106 (mbox_sync_headers_add_space): assertion failed: (start_pos <
>> data_size)
>>
>> We didn't see this until our mail servers went under a full load and now
>> we've trashed the ability of nearly all our users to read email.
>>
>> We saw this first under 1.0Beta3 and we've tried building 1.0Beta7 and
>> its made no difference.  I've tried fiddling with the "dirty" settings
>> for the indices and banning mmap to see if there's any way way of
>> avoiding the broken code, but with no luck.
>>
>> We're running White Box EL4 (2.6 Linux kernel)
>>
>> Does anyone know a workaround or whether there is an older version that
>> doesn't have the bug?  We desperately need to get an email service
>> running and I don't want to go back to (shudder) UW-imap if I can help
>> it but my options are limited at the moment.
>>
>
>
> -- 
> --+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-
> Christopher Wakelin,                           c.d.wakelin at reading.ac.uk
> IT Services Centre, The University of Reading,  Tel: +44 (0)118 378 8439
> Whiteknights, Reading, RG6 2AF, UK              Fax: +44 (0)118 975 3094
>