[Dovecot] dovecot-auth stops responding

[Jonathan Siegle]

On Sep 9, 2009, at 4:16 PM, Timo Sirainen wrote:

> On Wed, 2009-09-09 at 14:12 -0400, Jonathan Siegle wrote:
>> Running dovecot 1.2.4(imap only) on AIX out of inetd. I accept
>> passwords(PAM for auth) and kerberos tickets. Occasionally we see
>> dovecot-auth stop responding. I just kill it off and another process
>> is spawned which works fine.
>
> If you use PAM then I guess you should have auth worker processes too?

Yes
> So one dovecot-auth and 1+ "dovecot-auth -w"?

Yes. One of each.

> Does it help if you kill
> off the worker processes?

It only helps when I kill dovecot-auth, not dovecot-auth -w.

> What if you kill imap-login processes instead?
>

I don't have imap-login processes associated with inetd spawned  
dovecot. imap-login is what I call in inetd. I don't see them in the  
process table.


>> Segmentation fault in __fd_poll at 0x900000000117634 ($t1)
>> 0x900000000117634 (__fd_poll+0x98) e8410028          ld   r2,0x28(r1)
>> (dbx) where
>> __fd_poll(??, ??, ??) at 0x900000000117634
>> ioloop-poll.poll(__listptr = 0x00000001104dd330, __nfds = 145,
>
> This just shows that it was waiting for something to do. Does AIX have
> something like strace or truss? Use it to see what's happening when a
> request comes.
>

Yes I have truss. So tomorrow when this happens I'll do truss -f -p on  
the dovecot-auth process?

Oh my dovecot.conf file has this for pam:

  passdb pam {
     args = max_requests=1

   }

because of the expire password problem for kerberos.

thanks,
Jonathan
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