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

[Timo Sirainen]

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?