21 Jul
2011
21 Jul
'11
6:26 p.m.
On 07/21/2011 09:25 AM, Adam Litke wrote:
We need to remember to update the VM cgroup if we change the number of vCPUs on a running guest of course
When can this happen? Does libvirt support cpu hotplug?
Libvirt - yes, via virDomainSetVcpusFlags and similar API. Hypervisors - different story. Xen supports it, and at one point, qemu used to, but the qemu implementation was so buggy that current qemu does not support cpu hotplug. -- Eric Blake eblake@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org