[libvirt] Bug 979260 - cpu hot-add doesn't work with upstream libvirt 1.0.6 + qemu 1.5.50

Peter Krempa pkrempa at redhat.com
Fri Jun 28 09:41:57 UTC 2013


On 06/28/13 11:25, chandrashekar shastri wrote:
> Hi All,
>
> I have filed the following bug for CPU hot-add issue:
>
> Bug 979260 - cpu hot-add doesn't work with upstream libvirt 1.0.6 + qemu
> 1.5.50

The hotplug feature in qemu 1.5 uses a new monitor command. The support 
was recently added to libvirt by:

commit c12b2be5169298708cf727ed9ccd42e9d89a9737
Author: Peter Krempa <pkrempa at redhat.com>
Date:   Mon May 27 16:08:30 2013 +0200

     qemu: Implement new QMP command for cpu hotplug

     This patch implements support for the "cpu-add" QMP command that plugs
     CPUs into a live guest. The "cpu-add" command was introduced in QEMU
     1.5. For the hotplug to work machine type "pc-i440fx-1.5" is required.

The commit will be included in the upcomming 1.1.0 release of libvirt.

Peter




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