Charles Marcus wrote:

On 2/9/2009, Timo Sirainen (tss@iki.fi) wrote:

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I can't say for sure if/when I'll start coding the replication again, but my current understanding is that they're interested in it, but some other things are more important to get done first.

Will there be a wiki page describing the roadmap for the coming year? I'm very curious to see what is coming!

Indeed. It most awaiting feature for me. It will make Dovecot simply the best in all.

-- Best regards, Proskurin Kirill

Timo Sirainen wrote:

On Sat, 2009-01-31 at 03:49 -0800, Asheesh Laroia wrote:

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I remember last year we discussed Dovecot replication a bit on this list, e.g. http://www.dovecot.org/list/dovecot/2008-May/030446.html .

Has there been any development related to this, and can I help at all? The more I think about the hacks I'm employing to synchronize mail, the more I realize I want this. So hopefully I can put either some money or some time where my mouth is.

Replication is still on my TODO list and I've a bit of code for the replication plugin implemented, but it's not very far. Anyway since I now started working for Mailtrust they'll decide what the priorities are for new Dovecot features. I can't say for sure if/when I'll start coding the replication again, but my current understanding is that they're interested in it, but some other things are more important to get done first.

So throwing money at me won't help, but nothing of course stops you from writing the code :) I can send you the code I have so far if you want it.

It's a shame replication isn't a priority - that would be a killer feature.

Something easy I've considered is a transaction model similar to how MySQL does replication by adding sync calls (delete x, change flag on y, z is new, etc.) in strategic locations to the maildir storage engine.

~Seth

On Sun, 2009-02-15 at 03:44 -0800, Asheesh Laroia wrote:

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So throwing money at me won't help, but nothing of course stops you from writing the code :) I can send you the code I have so far if you want it.

By all means, send me the code, or preferably toss it in some hg branch on the web.

http://hg.dovecot.org/dovecot-replication/

I just merged it with latest v1.2 changes, didn't bother testing if it still compiles or not..

I also hate the "aggregator" and "writer" names, but couldn't think of anything better. The idea is that replication plugin is loaded to all imap/pop3/deliver processes. It talks to aggregator, which in turn connects to remote writer, which writes the changes to disk.

On Mon, 2009-02-16 at 13:19 -0600, Bryan Bradsby wrote:

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I also hate the "aggregator" and "writer" names

Master, slave (ala DNS) ?

Maybe, but a bit weird in a multi-master setup.