On Mon, October 31, 2011 4:18 pm, Miles Fidelman wrote: > Thanks guys. (FYI - I currently run DRBD over a pair of nodes that each run md raid 10 - as I go to 4 nodes, I've been looking at different ways of establishing a reliable storage environment that allows VMs to migrate.)
I think I have a similar requirement. We currently run customer VMs on Xen 3.4 host running a mixture of MD RAID and hardware RAID cards. We haven't had a great experience with the I/O performance of standalone KVM VMs compared to Xen on the same hardware and a debian stable base, so at the moment we would like to aim for Xen with the VM images on 'some kind of clustered storage'. I have high hopes that we might be able to achieve this one day with xen, ganeti and sheepdog. I am unsure of the pro's and con's of sheepdog over, say, Ceph or Gluster for such a use case but I do like the way that sheepdog works and it's relative simplicity (I really don't want to go anywhere near iSCSI or ATAoE ever again!). If kvm's I/O issues can be isolated and fixed for our use case then for me it would come down to integrating sheepdog with ganeti. I am already looking at integrating sheepdog and ganeti as well as writing some test cases for sheepdog/collie but the workload on the run-up to Christmas is getting in the way a little. Cheers, Matt. -- sheepdog mailing list [email protected] http://lists.wpkg.org/mailman/listinfo/sheepdog
