* geo replication @ 2013-01-09 21:19 Gandalf Corvotempesta 2013-01-09 21:32 ` Mark Kampe 0 siblings, 1 reply; 6+ messages in thread From: Gandalf Corvotempesta @ 2013-01-09 21:19 UTC (permalink / raw) To: ceph-devel probably this was already asked before but i'm unable to find any answer. Is possible to replicate a cluster geografically? GlusterFS does this with rsync (i think called automatically on every file write), does cheph do something similiar? I don't think that using multiple geographically distributed OSD with 10-15ms of latency will be good ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: geo replication 2013-01-09 21:19 geo replication Gandalf Corvotempesta @ 2013-01-09 21:32 ` Mark Kampe 2013-01-09 21:33 ` Gandalf Corvotempesta 0 siblings, 1 reply; 6+ messages in thread From: Mark Kampe @ 2013-01-09 21:32 UTC (permalink / raw) To: Gandalf Corvotempesta; +Cc: ceph-devel Right now, your only option is synchronous replication, which happens at the speed of the slowest OSD ... so unless your WAN links are fast and fat, it comes at non-negligible performance penalty. We will soon be sending out a proposal for an asynchronous replication mechanism with eventual consistency for the RADOS Gateway ... but that is a somewhat simpler problem (immutable objects, good change lists, and a WAN friendly protocol). Asynchronous RADOS replication is definitely on our list, but more complex and farther out. On 01/09/2013 01:19 PM, Gandalf Corvotempesta wrote: > probably this was already asked before but i'm unable to find any answer. > Is possible to replicate a cluster geografically? > > GlusterFS does this with rsync (i think called automatically on every > file write), does cheph do something similiar? > > I don't think that using multiple geographically distributed OSD with > 10-15ms of latency will be good ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: geo replication 2013-01-09 21:32 ` Mark Kampe @ 2013-01-09 21:33 ` Gandalf Corvotempesta 2013-01-10 21:52 ` Gregory Farnum 0 siblings, 1 reply; 6+ messages in thread From: Gandalf Corvotempesta @ 2013-01-09 21:33 UTC (permalink / raw) To: Mark Kampe; +Cc: ceph-devel 2013/1/9 Mark Kampe <mark.kampe@inktank.com>: > Asynchronous RADOS replication is definitely on our list, > but more complex and farther out. Do you have any ETA? 1 month? 6 months ? 1 year? ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: geo replication 2013-01-09 21:33 ` Gandalf Corvotempesta @ 2013-01-10 21:52 ` Gregory Farnum 2013-10-14 17:24 ` John McClean 0 siblings, 1 reply; 6+ messages in thread From: Gregory Farnum @ 2013-01-10 21:52 UTC (permalink / raw) To: Gandalf Corvotempesta; +Cc: Mark Kampe, ceph-devel@vger.kernel.org On Wed, Jan 9, 2013 at 1:33 PM, Gandalf Corvotempesta <gandalf.corvotempesta@gmail.com> wrote: > 2013/1/9 Mark Kampe <mark.kampe@inktank.com>: >> Asynchronous RADOS replication is definitely on our list, >> but more complex and farther out. > > Do you have any ETA? > 1 month? 6 months ? 1 year? No, but definitely closer to 1 year than either of the other options at this point. -Greg ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: geo replication 2013-01-10 21:52 ` Gregory Farnum @ 2013-10-14 17:24 ` John McClean 2013-10-14 23:24 ` Gregory Farnum 0 siblings, 1 reply; 6+ messages in thread From: John McClean @ 2013-10-14 17:24 UTC (permalink / raw) To: ceph-devel Is there any more information on an ETA? ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: geo replication 2013-10-14 17:24 ` John McClean @ 2013-10-14 23:24 ` Gregory Farnum 0 siblings, 0 replies; 6+ messages in thread From: Gregory Farnum @ 2013-10-14 23:24 UTC (permalink / raw) To: John McClean; +Cc: ceph-devel@vger.kernel.org Unfortunately RADOS geo-replication has not moved up the backlog yet. Happily, RGW geo-replication has been discussed a fair bit at Ceph Developer Summits etc (you can check them and the issue tracker out if you want some of the nitty-gritty) and you will hear more about it soon. :) -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com On Mon, Oct 14, 2013 at 10:24 AM, John McClean <jmcclean@linkedin.com> wrote: > Is there any more information on an ETA? > > > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-10-14 23:24 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2013-01-09 21:19 geo replication Gandalf Corvotempesta 2013-01-09 21:32 ` Mark Kampe 2013-01-09 21:33 ` Gandalf Corvotempesta 2013-01-10 21:52 ` Gregory Farnum 2013-10-14 17:24 ` John McClean 2013-10-14 23:24 ` Gregory Farnum
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