[Dovecot] more problems with dovecot-1.1 beta3

[sergey ivanov]

Hi Timo, thanks for explaining how amount of the file descriptor may be
counted.
 
Timo Sirainen wrote:
> On Thu, 2007-10-18 at 15:16 -0400, Sergey wrote:
>   
>> Thank you for pointing me about -xc99 flag, I have compiled and
>> installed dovecot inplace of version 1.0.5 without any special actions
>> on the upgrade. And after starting it immediately got in it's log file
>> messages like:
>> ---
>> dovecot: Oct 16 23:10:18 Error: IMAP(seriv): file_set_size() failed with
>> index cache file
>> /var/spool/imap/seriv/.imap/.git-altlinux-ru/dovecot.index.cache:
>> Invalid argument
>>     
>
> Could you apply this patch and see what it logs then:
> http://hg.dovecot.org/dovecot/rev/b7d8695d864d
>   
I have applied the patch and now I have in the dovecot.log after just
'make install in the new dovecot-1.1 and dovecot-sieve-1.1 dirs, on the
opening of the imap Maildir folder:
---
dovecot: Oct 21 04:00:30 Error: IMAP(seriv): file_set_size() failed with
index cache file
/var/spool/imap/seriv/.imap/.dovecot-cvs-dovecot-org/dovecot.index.cache:
Invalid argument
dovecot: Oct 21 04:00:30 Error: IMAP(seriv): posix_fallocate() failed:
Invalid argument
...
---
about 10 times a second.

Then I pkill'ed dovecot and did
---
find /var/spool/imap/ -name 'dovecot.index*' | xargs rm -rf
---
but got similar messages with new string added before each of them:
---
dovecot: Oct 21 04:17:35 Error: IMAP(seriv): posix_fallocate() failed:
Invalid argument
dovecot: Oct 21 04:17:35 Error: IMAP(seriv): file_set_size() failed with
index cache file /var/spool/imap/seriv/.imap/dovecot.index.cache:
Invalid argument
---
And, after I enabled smtp service and sent email to myself, I see in
dovecot.log
---
deliver(seriv): Oct 21 04:17:05 Error: posix_fallocate() failed: Invalid
argument
deliver(seriv): Oct 21 04:17:06 Error: posix_fallocate() failed: Invalid
argument
---

>   
>> dovecot: Oct 16 23:52:28 Panic: IMAP(seriv): file client.c: line 105:
>> assertion failed: (!client->destroyed)
>>     
>
> Fixed: http://hg.dovecot.org/dovecot/rev/86e964111b1f
>   
Yes, no anything like this after applying the patch.

>   
>> dovecot: Oct 18 15:02:58 Warning: fd limit 256 is lower than what
>> Dovecot can use under full load (more than 384). Either grow the limit
>> or change login_max_processes_count a
>> nd max_mail_processes settings
>>     
> ..
>   
>> One more problem is with fd limit: I have a small dovecot installation,
>> so don't want to increase fd limit. I tried to decreasee
>> max_mail_processes, login_max_processes_count and login_max_connections,
>> but still I have
>>     
> ..
>   
>> login_max_connections: 120
>> max_mail_processes: 128
>>     
>
> Changing login_max_connections doesn't affect anything because you're
> using login_process_per_connection=yes.
>
> The needed fd count is calculated from login_max_processes_count(pop3) +
> login_max_processes_count(imap) + max_mail_processes.
>
> So in your case 128+128+128.
>   

-- 
   With best regards,
       Sergey Ivanov