* 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?
>
>
>
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^ 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
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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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