On 04/14/2011 05:13 PM, Whit Blauvelt wrote: > On similar systems, there are options to have control return to the user > either after the first of two mirrored storage locations is written to, or > to have it wait until after the second is written to. Does Gluster have such > an option? If so, what does it default to? The replication that's in GlusterFS right now (AFR) is of a synchronous/local type. Gluster is working on "geosync" which provides a sort of DR-oriented asynchronous replication with very weak consistency/ordering properties. I'll let someone from Gluster comment on their plans beyond that. Separately, as part of the CloudFS project which is based on GlusterFS, I'm working on fully ordered asynchronous replication between multiple peer sites. Since that's a more challenging problem, and also somewhat blocked behind other more pressing priorities, that will take longer to complete.
