That’s pretty interesting. I haven’t seen that before, tbh, I had been using gridcentric for live migrations in grizzly, but that’s just because we didn’t have shared storage. So, the instance is what is generating the load, right? anything interesting on the console log? I wonder if there is some time-sync issue that’s going haywire when it lands on the new host. But now I’m just speculating.
On Sep 12, 2014, at 10:13 AM, Stephen Cousins <[email protected]> wrote: > Hi Abel, > > I just tried and it did the same thing. Load went up to 800 and the VM is > unreachable. > > Any ideas? > > Thanks, > > Steve > > On Fri, Sep 12, 2014 at 12:59 PM, Abel Lopez <[email protected]> wrote: > Does it work if you first detach the volume and then migrate? > > > On Friday, September 12, 2014, Stephen Cousins <[email protected]> > wrote: > I am fairly new to Openstack having just inherited a Grizzly system with NFS > storage. "nova live-migration" is working unless the VM has an attached > volume. When it doesn't work, the VM does move but it is not possible to > connect to it and the CPU load on that VM goes up to the number of cores > assigned to it. That is, for a VM with 8 cores in it, the load for that > qemu-system-x86_64 process goes up to about 800%. Is this a known problem > with Grizzly? > > Here is a description of our system: > > three machines set up with HA for Quantum (with Open vSwitch), Cinder, > RabbitMQ, and Nova. These nodes are all compute nodes too. We also have > another machine that is just compute. > > Cinder and Glance storage is all NFS connected to each machine with the same > mount points. > > The command I am using to do the migration is: > > nova live-migration $UUID compute3 > > In some cases the migration has worked when a volume has been attached. Most > of the time however, it does not work. > > Thanks, > > Steve > > -- > ________________________________________________________________ > Steve Cousins Supercomputer Engineer/Administrator > Advanced Computing Group University of Maine System > 244 Neville Hall (UMS Data Center) (207) 561-3574 > Orono ME 04469 steve.cousins at maine.edu > > > > > -- > ________________________________________________________________ > Steve Cousins Supercomputer Engineer/Administrator > Advanced Computing Group University of Maine System > 244 Neville Hall (UMS Data Center) (207) 561-3574 > Orono ME 04469 steve.cousins at maine.edu >
signature.asc
Description: Message signed with OpenPGP using GPGMail
_______________________________________________ OpenStack-operators mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
