[Dovecot] dsync, hard-links and refcounts

[Timo Sirainen]

On 13.2.2012, at 16.16, Christoph Bußenius wrote:

> when creating a copy of a mail, dovecot provides a feature that will store its contents only once.  In maildir, this is done by means of hard links, while mdbox has some special refcounting mechanism.
> 
> My question is, how can we convert mails from maildir to mdbox without duplicating these copies?  It seems that dsync does not detect the hard links.  Even if the hard-linked mails have the same GUID listed in dovecot-uidlist, dsync creates multiple instances of the text.
>  - Is there some way to make dsync notice the hard links? (I used
>    dovecot 2.0.17)

It should deduplicate when GUIDs are the same.. I guess I'll have to look into why it's not working.