[Dovecot] "Corrupted index cache file" error (Dovecot 1.0.3)

[Chris Wakelin]

Mike Brudenell wrote:
> Greetings -
> 
> Now that users are beginning to pile up more on our new Dovecot-based
> IMAP service I'm seeing a small number of entries like this in the
> logfiles:
> 
> Corrupted index cache file
> /mailstore/index/o/ozw100/.INBOX/dovecot.index.cache
> : invalid record size
> 
> We are using Dovecot 1.0.3 with Maildir folders served over NFS from
> NetApp filers, but the index files are stored on local disk.
> 
> By "a small number" I mean 4 or 5 on each of our two IMAP servers since
> midnight.
> 
>   * Should I be worried?

Probably not.

>   * Is there anything I need to do fix the files?  (I'm guessing not as no
>     problem reports have come in, and the logs show the people affected
>     continuing to work throughout the day.)

I think they probably fix themselves. You could check to see if the same
file occurs more than once. If so, I'd try deleting the cache files
while the user is disconnected (or at least not having that folder open).

>   * Would upgrading to 1.0.5 help?  (I couldn't see anything in the
>     Release Notes for either 1.0.4 or 1.0.5 about this)

Possibly, but we still get occassional index errors too (just one today,
plus four assertion failures in mail_index_view_sync_end). We're on
1.0.5 with mboxes.

Chris

-- 
--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-
Christopher Wakelin,                           c.d.wakelin at reading.ac.uk
IT Services Centre, The University of Reading,  Tel: +44 (0)118 378 8439
Whiteknights, Reading, RG6 2AF, UK              Fax: +44 (0)118 975 3094