lmtp timeout, locks and crashes

[Steffen Kaiser]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thu, 17 Mar 2016, Tom Sommer wrote:
> On 2016-03-17 13:41, Tom Sommer wrote:
>> On 2016-03-15 10:53, Tom Sommer wrote:
>>> I'm seeing some problems on accounts which get a lot of spam (like, a 
>>> lot).
>> 
>> I did an "strace" on one of the hundreds of lmtp processes.
>> 
>> It's doing stat() on all files in the new folder for the receiver:
>> 
>> stat("/var/mail/dovecot/xxxx/xxxx/new/xx.xxx.xxxx.xxxx.com",
>> {st_mode=S_IFREG|0600, st_size=15505, ...}) = 0
>> 
>> etc.
>> 
>> The "new" folder contains hundreds of thousands of files.
>> 
>> Is there any way to prevent all these stat() calls? It seems like
>> something there would be an index or cache for?
>
> Seems like it might be due to maildir quota-recalculation?

Yes possibly. But also in order to update the index files.

For all I know this should happen only, if the mtime of the directory 
changes. Is there some external programm manipulating files in the new/cur 
directories bypassing Dovecot? E.g. a rm on command line?

- -- 
Steffen Kaiser
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iQEVAwUBVuuqPHz1H7kL/d9rAQIEFggAmwDF11PTTIUOZ66udkcfxjZ944MvFBE0
I5jgSe/qRwSchfPE/leyc15uEC477YdJavbOv8TtsdZQVgUcWZgM7Wdtn0iCNWsT
LttwfEp2Ft0swdtwE5948Swt2P99UHi6KVC7XkOHm/uH8O3zLRNMo8h04IYkwhV+
zCz0FAEF57opFATpoJ1VPJE01PslKBEo5sublCaA2c35kE0ukDnNOsocJkiIw8+t
ax85THVWFjIv2ybBbjYIIYFipkIo1vxzYaxfKnrLg9OdbUPceVaL0yL/WXm44wP7
Yoouoh+42E8jDvCHSCWmyBjXUw0CvmKExMSwigwNYYYhabCpYmEctg==
=LQdS
-----END PGP SIGNATURE-----