Increasing "lock_reopen" leads to complete locking_timeout

[Thorsten Büker]

Dear list,

As I've discovered only a few results on google, which didn't clearify
the situation, I hope for your advice.

Lines as the following one are quite common for some mailboxes on my
system and with regard to [1] I don't spend much attention:

Dec  5 14:13:11 hostname cyrus/lmtpd[14434]: lock_reopen: blocked,
sleeping for 1 on interval 1 (15,
/var/lib/cyrus/quota/t/user.thorsten)

Two days ago suddenly the interval increased (only for this mailbox):

Dec  5 13:07:48 hostname cyrus/imapd[698]: lock_reopen: blocked,
sleeping for 9 on interval 3 (13, /var/lib/cyrus/quota/c/user.carsten)

[...]

Dec  5 13:08:11 hostname cyrus/imapd[12504]: lock_reopen: blocked,
sleeping for 49 on interval 7 (17,
/var/spool/cyrus/mail/c/user/carsten/Sent/cyrus.header)

[.. Leading to ..]

Dec  5 13:11:25 hostname cyrus/imapd[12504]: IOERROR: locking_timeout
header for user.carsten.Sent: Resource temporarily unavailable

Delivery of mails to cyrus via lmtp didn't work anymore. As I couldn't
spot the actual problem, I restarted cyrus and everything runs fine
again. The used version of cyrus is still 2.1.15 backported to Debian
Woody.

Thanks for any hints in advance!

Kind regards,
  Thorsten

 [1]
http://asg.web.cmu.edu/archive/message.php?mailbox=archive.info-cyrus&ms
g=23851

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