[Dovecot] 1.1.6 -> 1.1.7 regression: dovecot: pipe() failed: Too many open files

[Timo Sirainen]

On Tue, 2008-12-23 at 14:23 +0000, Mark Zealey wrote:

> Dec 23 14:02:15 mail9 dovecot: pipe() failed: Too many open files

dovecot master process has opened too many files.

> The ulimit for the number of open files on these servers has remained
> unchanged at 8192

Should be enough..

> and there are no warnings about too few fd's on
> dovecot startup.

I'm not completely sure that the warning check is correct. I think it
should be though.

>  There weren't amazing numbers of imap sessions open at
> the time (only something like 400-500; we've had 1.5k in the past), so I
> suspect this is a regression between 1.1.6 and 1.1.7 where you've got a
> leak of fd's ? 

Sounds like a leak, but I doubt it was a regression. Probably you just
hit a rare condition.

> If it happens again I'll try and get a snapshot of the
> fd's open by the master dovecot process.

Yes, that would help figuring it out.
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