Hi,
Quoting Evgeniy Kononov via Info-cyrus <info-cyrus@xxxxxxxxxxxxxxxxxxxx>:
Hello!
I have two servers with
cyrus-imapd cyrus-imapd-2.5.8-13.3.el7.centos.kolab_16.x86_64
One server as master and second as replica.
All worked fine when users login on master server, but when I
temporary move users on replica I found some trouble
Messages synchronisation from replica to master goes fine if
sync_client sees a mismatch on the master, but if user create folder
on replica it isn't sync on master.
Instead of it folder is unsubscribes from the master server and
removed from both server
grep UNSUB maillog
Sep 10 13:31:41 master sync_client[1456]: UNSUB user@xxxxxxxxxxx
example.com!user.user.foldername
Why is it happend ?
When I tried manual sync from replica to master server, folder was
subscribed. Is it possible that both servers will be master and
replica in same time.
Cyrus does not support master-master replication. Because of
CONDSTORE (https://tools.ietf.org/html/rfc4551) Cyrus is able
to handle messages on a master-master setup, but the information
about folder operations is not tracked and so cyrus is unable to
distinguish is a folder was subscribed on one server, or if a folder
was unsubscribed on the other. Same is true for folder
creation/rename/deletion
The master-master replication is a wanted feature but even the 3.0.x
does not support it. I am not sure about the upcoming 3.1.x or master
branch.
Regards,
Michael
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