Re: [libvirt-users] <qemu:commandline> domain XML tag is not working?
On Mon, Apr 20, 2015 at 10:37:13PM +0800, Chengyuan Li wrote:
Hi,
I tried to enable virtio-blk data plane feature for VMs in my openstack
environment, the hypervisor is ubuntu 14.04, libvirt 1.2.2
[I haven't tested the virtio-blk data plane myself.]
This libvirt version seems a little old (from March 2014), you might
want to move to a bit newer.
and QEMU 2.0.
As nova doesn't support that parameter yet, I did belows
1. nova boot a VM with raw disk image.
2. nova stop the VM.
3. run "virsh edit <instance-id>" on the hyprvisor node, and adding
below
into instance xml just before </domain>.
You're modifying the guest definition behind Nova's back, so you get to
keep all the pieces if something breaks. :-)
However, the <qemu:commandline> part is ignored and not saved
after closing
virsh edit, seems that libvirt rejected these changes. Is there any XML
syntax error here? Or libvirt doesn't support <qemu:commandline> tag?
<qemu:commandline>
<qemu:arg value='-set'/>
<qemu:arg value='device.drive-virtio-disk0.x-data-plane=on'/>
</qemu:commandline>
--
/kashyap