[Dovecot] dovecot stopping - no messages

[Nigel Allen]

Okay - after 3 hours I got this:

Detaching after fork from child process 31368.
Detaching after fork from child process 31371.
Detaching after fork from child process 31372.
Detaching after fork from child process 31376.
Detaching after fork from child process 31377.
Detaching after fork from child process 31379.
Detaching after fork from child process 31380.
Detaching after fork from child process 31382.
Detaching after fork from child process 31383.
Detaching after fork from child process 31385.
Detaching after fork from child process 31386.
Detaching after fork from child process 31388.
Detaching after fork from child process 31389.
Detaching after fork from child process 31391.
Detaching after fork from child process 31392.
Detaching after fork from child process 31394.
Detaching after fork from child process 31395.
Detaching after fork from child process 31397.
Detaching after fork from child process 31398.
Detaching after fork from child process 31400.
Detaching after fork from child process 31401.
Detaching after fork from child process 31403.

Program received signal SIGSEGV, Segmentation fault.
0x0804fb3a in ?? ()
(gdb) bt
#0  0x0804fb3a in ?? ()
#1  0x09bd1960 in ?? ()
#2  0x09bd197c in ?? ()
#3  0xbfee1e98 in ?? ()
#4  0x0804a203 in ?? ()
#5  0x09bd1ad8 in ?? ()
#6  0x00000a42 in ?? ()
#7  0x09bd26d8 in ?? ()
#8  0x08051049 in ?? ()
#9  0xbfee1ed0 in ?? ()
#10 0x00000000 in ?? ()
(gdb) q
The program is running.  Quit anyway (and detach it)? (y or n) Detaching
from program: /usr/sbin/dovecot, process 18560

Any ideas please?

TIA

Nigel.



On Wed, 2005-04-27 at 08:55, Nigel Allen wrote:
> Re my last "everything is fine" message.
> 
> Yup, you guessed it - about 5 minutes ago the users all started ringing
> me - mail had died again.
> 
> Tried a "service dovecot status" and got a "dovecot dead but subsys
> locked". Did a "service dovecot start" and away it went again.
> 
> >From the earlier advice, there is no core in /var/run/dovecot but I will
> try the gdb instructions (newbie with gdb) and post the resuults.
> 
> Thanks again
> 
> Nigel.
> 
> 
> On Tue, 2005-04-26 at 19:13, Timo Sirainen wrote:
> > On Tue, 2005-04-26 at 12:32 +1000, Nigel Allen wrote:
> > > Greetings
> > > 
> > > Running Fedora Core 3 and dovecot-0.99.13-3.FC3 as a production mail
> > > server for around 30+ accounts.
> > > 
> > > A couple of times a day dovecot just stops.
> > > 
> > > Nothing in the mail log except for 
> > > 
> > > Apr 26 00:48:19 sydsrv05 imap-login: Can't connect to auth process at
> > > default: Connection refused
> > 
> > Sounds like Dovecot's master process crashes. Is there a core file
> > in /var/run/dovecot directory? If so, do:
> > 
> > gdb dovecot /var/run/dovecot/core
> > bt
> > 
> > and send the result here.
> > 
> > Or alternatively do:
> > 
> > gdb attach `pidof dovecot`
> > cont
> > (wait for it to crash)
> > bt
-- 
Nigel Allen, Snr Consultant, ProSmart Consulting Australia
48 Tiarri Avenue, Terrey Hills, NSW 2084, Australia
Tel: +61 2 9450 2690  Fax: +61 2 9450 2691 Mob: +61 4 1494 5269
http://www.prosmart.com.au