Re: multi sync (>2 servers) + selective sync + trigger

2015-06-02 Thread Reuben Farrelly
On 31/05/2015 7:23 PM, b-dovecot@grmbl.net wrote: Â - If you really use DHT-like algorithms, rebalancing your cluster will require mininum data movement and you add or remove nodes. It will require a small change on the SQL queries above so that the new node also recognizes the new use

Re: multi sync (>2 servers) + selective sync + trigger

2015-05-31 Thread b-dovecot . org
Daniel, On Sat, May 30, 2015 at 09:26:32AM -0300, Daniel van Ham Colchete wrote: >B, >I really like the idea of N-way replication. Pairs are ugly, they cost > double! Even if you have 20 servers, when one goes down all that IO traffic > goes to just one. >So, what I did here was a (k

Re: multi sync (>2 servers) + selective sync + trigger

2015-05-30 Thread Daniel van Ham Colchete
B, I really like the idea of N-way replication. Pairs are ugly, they cost double! Even if you have 20 servers, when one goes down all that IO traffic goes to just one. So, what I did here was a (kind of) DHT-based n-way replication, where the node for the second copy is independent of where the f

multi sync (>2 servers) + selective sync + trigger

2015-05-29 Thread b-dovecot . org
Hi all, I've been researching ways to replicate mail across multiple mailstores and have a few questions. Synching 2 mailstores (M1 & M2) via dsync works fine. I want to add a 3rd and 4th (M3 & M4) server to also be synced. Multi-sync (>2 servers): 1) How do I tell M1 and/or M2 to also sync