On 11/16/2012 07:11 AM, John Mark Walker wrote: > I think now is a good time to mention the quorum enhancements going into > 3.4. I believe we'll have a way to determine quorum and resolve split-brain > even in replica 2 setups. This will be possible via the creation of an > arbiter node, which isn't a separate server, and whose sole job will be to > determine quorum and determine the direction for self-heal. > > I'll leave it to the devs to comment on how much is implemented now and > whether it's in the master branch. I wrote about this recently on the HekaFS blog. http://hekafs.org/index.php/2012/11/different-forms-of-quorum/ The current status is that a very weak form of quorum (within a replica set with an ugly tie-break if N=2) is in 3.3 and master already. There's a patch to add server-side quorum enforcement. http://review.gluster.org/#change,3811 (master) http://review.gluster.org/#change,3817 (3.3) These are still in review. Also, as mentioned in my article, I think it needs to be further enhanced in a couple of ways. To sum up, I think we know the way forward on this issue but it's taking us a while to get there.
