Leaked files in maildir "tmp" after vsz_limit crashes

[Aki Tuomi]

> On 30/09/2020 13:43 Peter Mogensen <apm at b-one.net> wrote:
> 
>  
> Hi,
> 
> Lately I've seen a few examples of users hitting the vsz_limit (usually
> trying to "delete" mails i Spam/Junk by moving them to Trash with a
> large dovecot.index.cache  - which resulted in mails left/leaked in the
> tmp directory of Trash.
> 
> Sometimes it seems the client gets into a state were it repeatedly tried
> to sync the client and server state so it does it again and again,
> building up the number of files/links in tmp.
> 
> It seems the default 1 week interval to "unlink_old_files()" is not
> enough to prevent this from blowing up inode wise.
> 
> However, ... lowering it, - or increasing vsz_limit feels a bit like
> kicking the can down the road.
> 
> PS: This on dovecot 2.2.36
> 
> /Peter

You need to set your vsz_limit to facilitate large index files. I would recommend configuring it up to 2G.

Aki