[Dovecot] stats + fts squat plugins, indexer-worker error on message indexing

[Timo Sirainen]

On 25.4.2012, at 21.30, David Warden wrote:

>>> Apr 25 09:56:26 wardentest3 dovecot: service=indexer-worker user=warden rip= Error: open(/proc/self/io) failed: Permission
>> 
>> Does the attached patch fix it?
> 
> The error is still logged, but is that intentional on your part? It looks like the patch logs the failure to open() when the error returned is anything other than ENOENT and in my case the error is EACCESS. Other than that it looks like it correctly disables accessing that file.

The patch intended to open the /proc/self/io immediately at startup while still running as root.

Anyway, now that I'm testing it again myself, I see that it's supposed to work even without the patch, because /proc/self/io's permissions change after seteuid().

I noticed similar errors happening somewhat randomly in another CentOS 6.2 system. Changing the kernel fixed it. (Downgrading at least worked, possibly upgrading might also.)