[libvirt-users] state of setvcpus

[Eric Blake]

On 08/09/2013 09:01 AM, Thomas Stein wrote:
>>   Meanwhile, you can try using 'setvcpus gentookvm
>> --guest 4' to use the guest agent (assuming you have qemu-ga running in
>> the guest, and the proper plumbing of the guest agent channel in your
>> domain XML) to use the guest to take vcpus on- or offline.
> 
> Tried that with no luck so far.
> 
> virsh # setvcpus gentookvm --guest 2
> error: internal error: unable to execute QEMU agent command
> 'guest-get-vcpus': The command guest-get-vcpus has not been found
> 
> It's qemu-1.4.2 and libvirt-1.1.1.

There's your problem.  Guest-agent support for hotplug wasn't introduced
until qemu 1.5.  Upgrade at least your qemu-ga in your guest, and
probably also the qemu running your guest.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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