> On Mon, Jul 12, 2010 at 11:59 AM, Roland Rabben <roland@xxxxxxxx> wrote: >> Have there been any work to get CEPH working with two datacenters? On Mon, Jul 12, 2010 at 12:39 PM, Gregory Farnum <gregf@xxxxxxxxxxxxxxx> wrote: > That said, as Brian discusses it will work, but expect writes to > proceed at about the speed of your datacenter interconnect. Roland did not specify an access pattern, but from context he may be considering the offsite copy as a backup. my understanding is that ceph is smart enough not to make writes block, when there are no other open readers of files - it returns as fast as local disk can acknowledge. what does ceph do if it can get a couple copies made quickly (but not the third remote copy) and all readers are in the local datacenter? -- Ryan Grant -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
