[Dovecot] possible nfs issue

[Cor Bosman]

On Oct 3, 2012, at 12:35 AM, Timo Sirainen <tss at iki.fi> wrote:

> On 3.10.2012, at 0.45, Timo Sirainen wrote:
> 
>> On 3.10.2012, at 0.39, Cor Bosman wrote:
>> 
>>> With NFS these files are created when a file gets unlinked, but another process still has it open. It disappears as soon as the other process closes it. For some reason they dont disappear. As far as I can tell we've had no server crashes that could explain this.  One possible theory is that a rename happens after an unlink. In that case the file remains. This could possibly be a dovecot issue. 
>> 
>> How can a rename happen after unlink? The rename should fail. (Unless doing rename(.nfs1234, something), but Dovecot definitely isn't doing that.)
> 
> You could see if this old test program leaves .nfs files lying around:
> 
> http://dovecot.org/tmp/readdir.c
> 
> Just comment out the line:
> 
> 		close(fd);
> 

I meant the .nfs1234 indeed, but it seemed very unlikely. Thanks for clarifying. The readdir program leaves no .nfs files. We'll have to explore other possibilities.

Cor