[Dovecot] pop3-login: Fatal: io_loop_handle_add: epoll_ctl(1, 5):

[Mark Sapiro]

On Tue, Oct 06, 2009 at 11:59:02AM +0200, Marco Nenciarini wrote:
> Timo Sirainen ha scritto:
> >
> >That's the pty's fd I think, probably from dovecot --exec-mail because
> >normally dovecot master process closes them at startup..
> >
> >Did you check if two "dovecot" processes were running when this
> >happened?
> 
> This morning the problem showed again.
> 
> This is what I was able to discover:
> 
> 1) There was only one master process.
> 2) Imap and managesieve login and worker processes were working normally.
> 3) There was no pop3/pop3-login.
> 
> After the last time I've modified my root crontab to execute the 
> expire-tool every minute, trying to trigger the problem in another time 
> of the day, but the first failure is
> 
> Oct  6 06:26:02 delta01 dovecot: imap-login: Panic: Leaked file fd 5: 
> dev 0.12 inode 1005
> Oct  6 06:26:02 delta01 dovecot: dovecot: Temporary failure in creating 
> login processes, slowing down for now
> Oct  6 06:26:02 delta01 dovecot: dovecot: child 21216 (login) killed 
> with signal 6 (core dumps disabled)
> 
> As you can see this time is the login process of an imap connection, so 
> I can state that the problem is not related to pop3 and nor to expire 
> plugin.
> 
> Probably the imap connections that I see were there before the problem 
> was triggered.
> 
> So the only remaining thing in daily log rotation that can be the 
> trigger of the problem is the heavy cpu/io load due to daily maintenance.
> 
> The last weird thing is that this time I have simply asked dovecot to 
> reload its configuration and the problem is vanished.
> 
> I hope this is enough to figure out what was happened.
> 


On the other hand, I have not seen a recurrence since my initial
report. At this point, dovecot has been running without interruption
for over 9 days. I intend to install 1.2.6 tomorrow.

-- 
Mark Sapiro mark at msapiro net       The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan