[Dovecot] Multiple instances of .customflags staying open

Timo Sirainen tss at iki.fi
Mon Sep 22 17:28:48 EEST 2003

On Mon, 2003-09-22 at 16:13, Ron wrote:
> I've just recently noticed a serious problem with my system. After about
> an hour or so I get errors in /var/log/maillog such as this;
> Sep 21 06:40:16 the-system imap(ray): opendir() failed with file \
> \/home/ray/Maildir//new: Too many open files
> I investigated with 'lsof' and found that many copies of '.customflags'
> were open for each and every folder. ie; Each folder's '.customflags'
> file was open 15 times!

Could it be that your .customflags files are not writable to users?
That's the only code path that I can see it leaking file descriptors for
.customflags. Attached patch should also fix it.

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