dovecot - Dec 2011 - Error: Corrupted index cache file /xxx/yyy/zzz/indexes/.INBOX/dovecot.index.cache: invalid record size

Hi all, 

I got a problem with a Dovecot IMAP/POP installation.


Since a recent failure of our distributed file system (no loss of data
btw), Dovecot seems to have a problem with index cache files. 

For a
lot of accounts, I have this error in logs: 

Error: Corrupted index
cache file /xxx/yyy/zzz/indexes/.INBOX/dovecot.index.cache: invalid
record size 

If I delete all files from /indexes/ directory, it still
occurs... 

Do you see what can cause this problem ? Or what information
can I provide to help ? 

Our distributed FS is MooseFS. Dovecot is
configured like if it was NFS (no mmap, etc...). 

Thank you for your
help :) 

Flo

On 9.12.2011, at 16.30, florent at coppint.com wrote:
> Since a recent failure of our distributed file system (no loss of data
> btw), Dovecot seems to have a problem with index cache files. 
> 
> For a
> lot of accounts, I have this error in logs: 
> 
> Error: Corrupted index
> cache file /xxx/yyy/zzz/indexes/.INBOX/dovecot.index.cache: invalid
> record size 
Broken cache files aren't visible to users. Are there other errors?
> If I delete all files from /indexes/ directory, it still
> occurs... 
When that error happens, the cache is automatically deleted. But if it keeps
happening over and over again, something's broken.
> Do you see what can cause this problem ? Or what information
> can I provide to help ? 
You said it worked fine until the distributed filesystem somehow failed, and
after that it just keeps on failing? It doesn't really sound like it's
Dovecot's fault. Also what Dovecot version is this?