Timo Sirainen <[email protected]> writes: > On Sat, 2009-07-18 at 01:43 +0200, [email protected] wrote: >> Timo Sirainen <[email protected]> writes: >> >> > On Fri, 2009-07-17 at 22:31 +0200, [email protected] wrote: >> >> This sounds really awesome! How testable is it? >> > >> > By "testable" do you mean "is it working now"? It should work except for >> > mailbox deletions and renames. But I haven't really tested it, just ran >> > unit tests. :) And it pretty much requires using Dovecot v2.0 for IMAP >> > so that it can handle expunges properly. And I wouldn't really recommend >> > doing that yet.. >> >> Would this setup work then? >> - dovecot 1.2 on master and slave machines >> - dsync on the slave machine, 2 way sync >> - propagate expunges by some other means, like removing maildir mail >> files with unison or similar? > > Actually there shouldn't be problems with expunges after all. Conflicts > just are detected less reliably. For example if: > > Server 1 saves message with UID=123 > Server 2 saves a different message with UID=123 > Server 1 expunges messages UID=123 > > dsync is run to move changes from server 2 to server 1. It notices that > "oh, UID=123 has been expunged from server 1 already" and server 2's > UID=123 message isn't copied there. Or if you're syncing changes from 1 > to 2, it would expunge the UID=123 from server 2. > > If server 1 had been running Dovecot v2.0, the expunge record would have > message's GUID stored and dsync would notice that there was a GUID > conflict and copy the server 2's message to server 1 as UID=124.
In my case mail would only arrive on the master. If I interpret you correctly this case will be very simple for dsync and will work already. > >> How would I handle mailbox addition, renaming and deletions? > > The reason why dsync can't do that without Dovecot v2.0 is because it > can't be done reliably without storing extra information.. (And I > haven't yet even implemented that to v2.0.) So the answer is: Not > easily. Will addition work automatically? Can renaming and deletion be made by renaming/deleting maildir folders manually? I guess I can do the setup and test it myself :) -- Joakim Verona
