[Dovecot] v2.2.beta1 dsync replication status update

[Timo Sirainen]

On 8.1.2013, at 10.47, Timo Sirainen <tss at iki.fi> wrote:

> On Mon, 2013-01-07 at 12:33 +0200, Timo Sirainen wrote:
> 
>> Lots of fixes since 2.2.alpha1, especially related to dsync. Also dsync
>> now supports syncing private message flags when INDEXPVT is used.
> 
> After some more dsync fixes that are available in hg, I'm now using it
> for replicating my company's mails. Seems to be working now, v2.2.rc1
> hopefully not far away. :)

And after some more fixes it really seems to be working now.

> Although still in TODO is for the replication process to use the new
> "quick stateful sync" feature of dsync. It requires keeping track of the
> state string for each user, so needs a bit larger change. Maybe it's
> enough to keep these strings only in memory. (Replication currently does
> a full sync for all users at startup anyway.)

Implemented this also. The state strings are kept only in memory. Much better for dsync to use only a few kilobytes of network traffic per change than hundreds of kBs. :)