Friends, We've got a simple Murder deployed, 2 front-ends, 1 mupdate-master, 1 backend and 1 replica. Recently, due to an array malfunction, the back-end master took a powder, and we switched to the replica. Now we're trying to recover the original master, and running into lots of problems getting data to sync back. This is all with version 2.4.17-caldav-beta9, from Debian packages, on Ubuntu 14.04 servers. For the record, the servers are KVM QEMU VMs, tho I doubt that matters at all. We've got the roles reversed just fine with changes to the various cyrus.conf and imapd.conf files, and are not worried about that being a problem. Everything is working fine as far as authentication/authorization, etc. It's just the replication that's fubar. We're seeing this sort of error in the logs on the (new) master side: ... Aug 6 18:21:28 mailbox.ia cyrus/sync_client[27000]: Promoting: MAILBOX user.connie.yadda -> USER connie Aug 6 18:21:28 mailbox.ia cyrus/sync_client[27000]: Promoting: MAILBOX user.elly.Junk -> USER elly Aug 6 18:21:28 mailbox.ia cyrus/sync_client[27000]: Error in do_sync(): bailing out! Bad protocol Aug 6 18:21:28 mailbox.ia cyrus/sync_client[27000]: Processing sync log file /var/lib/imap/sync/log-27000 failed: Bad protocol And this on the (new) replica side: Aug 6 18:20:37 mailbox.wi cyrus/syncserver[13158]: executed Aug 6 18:20:37 mailbox.wi cyrus/syncserver[13158]: accepted connection Aug 6 18:20:37 mailbox.wi cyrus/syncserver[13158]: cmdloop(): startup Aug 6 18:20:37 mailbox.wi cyrus/syncserver[13158]: login: mailbox.ia.occinc.com [192.168.220.24] mailproxy PLAIN User logged in Aug 6 18:20:37 mailbox.wi cyrus/syncserver[13158]: created decompress buffer of 4102 bytes Aug 6 18:20:37 mailbox.wi cyrus/syncserver[13158]: created compress buffer of 4102 bytes Aug 6 18:20:59 mailbox.wi cyrus/syncserver[13158]: Repacking mailbox user.ndlocate Aug 6 18:21:05 mailbox.wi master[11811]: service syncserver pid 13158 in BUSY state: terminated abnormally In some cases we've seen problems we believe are due to issues with a particular user's mailbox, and have fixed those by blowing away the user's mailbox hierarchy on the replica, rsync-ing it back over from the master, and then doing a user-sync. But there are hundreds of users, so that's not a practical general solution. The mailstore is currently about 130GB in size, and the master and replica are in different data centers, with only about 3 or 4Mbps available between them (depending upon time of day). This is fine in the normal course of rolling replication, but makes simply re-replication the entire thing a major pain, if that's the only option. So, what's causing this problem, and what's the best course of action to recover from this sort of situation? Thanks in advance for your consideration, -nic -- Nic Bernstein nic@xxxxxxxxxxx Onlight, Inc. www.onlight.com 219 N. Milwaukee St., Suite 2a v. 414.272.4477 Milwaukee, Wisconsin 53202 ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus