[Dovecot] Errors after enable vnd.dovecot.duplicate

[Daniel Parthey]

Alessio Cecchi wrote:
> Il 19/02/2013 16:44, Timo Sirainen ha scritto:
> >On 19.2.2013, at 16.42, Alessio Cecchi <alessio at skye.it> wrote:
> >
> >>I have two strange errors, one is many of this error in lda.log:
> >>
> >>Feb 19 14:43:17 lda(info at domain.com): Error: file_dotlock_create(/home/vpopmail/domains/domain.com/info/.dovecot.lda-dupes) failed: Resource temporarily unavailable
> >>Feb 19 14:43:43 lda(info at domain.com): Error: file_dotlock_create(/home/vpopmail/domains/domain.com/info/.dovecot.lda-dupes) failed: Resource temporarily unavailable
> >>Feb 19 14:44:29 lda(info at domain.com): Error: rename(/home/vpopmail/domains/domain.com/info/.dovecot.lda-dupes.lock, /home/vpopmail/domains/domain.com/info/.dovecot.lda-dupes) failed: No such file or directory
> >>Feb 19 14:44:29 lda(info at domain.com): Error: file_dotlock_replace(/home/vpopmail/domains/domain.com/info/.dovecot.lda-dupes) failed: No such file or directory
> >>
> >>Note that my mailboxes are store on NFS. This happens for many accounts.
> >
> >You are using multiple servers that deliver mails to the same users? Not supported, use director + LMTP:
> >http://wiki2.dovecot.org/Director
> 
> Yes, I will try to switch to LMTP.

# 2.1.10: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-45-server x86_64 Ubuntu 10.04.4 LTS 
# Pigeonhole: 0.3.3

Since I'm using the vnd.dovecot.duplicate extension in my sieve script,
we got the same error exactly three times, but only on Feb 11.
We are using LMTP on a 4 node director+mailbox dual-instance setup with NFSv4.

Feb 11 11:10:45 10.129.3.233 dovecot: lmtp(23044, dparthey at example.org): Error: file_dotlock_create(/mail/dovecot/example.org/dparthey/.dovecot.lda-dupes) failed: Resource temporarily unavailable
Feb 11 11:10:50 10.129.3.233 dovecot: lmtp(23139, dparthey at example.org): Error: file_dotlock_create(/mail/dovecot/example.org/dparthey/.dovecot.lda-dupes) failed: Resource temporarily unavailable
Feb 11 11:10:52 10.129.3.233 dovecot: lmtp(23207, dparthey at example.org): Error: file_dotlock_create(/mail/dovecot/example.org/dparthey/.dovecot.lda-dupes) failed: Resource temporarily unavailable

No further errors on dovecot-error.log.
The error did not reoccur yet and seems to be very rare.

Regards
Daniel
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