Hello, On Wed, 12 Nov 2014 17:29:43 +0100 Christoph Adomeit wrote:
> Hi, > > i installed a Ceph Cluster with 50 OSDs on 4 Hosts and finally I am > really happy with it. > > Linux and Windows VMs run really fast in KVM on the Ceph Storage. > > Only my Solaris 10 guests are terribly slow on ceph rbd storage. A > solaris on Ceph Storage needs 15 Minutes to boot. When I move the > Solaris Image to the old nexenta nfs storage and start it on the same > kvm host it will fly and boot in 1,5 Minutes. > > I have tested ceph firefly and giant and the Problem is with both ceph > versions. > > The performance problem is not only with booting. The problem continues > when the server is up. EVerything is terribly slow. > What actual disk driver are you using with the Solaris KVMs? This sounds a lot like Windows VMs with IDE emulation, before installing the virtio drivers. Regards, Christian > So the only difference here is ceph vs. nexenta nfs storage that causes > the big performance problems. > > The solaris guests have zfs root standard installation. > > Does anybody have an idea or a hint what might go on here and what I > should try to make solaris 10 Guests faster on ceph storage ? > > Many Thanks > Christoph > -- Christian Balzer Network/Systems Engineer ch...@gol.com Global OnLine Japan/Fusion Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
