[libvirt] Need help, how can I access to qemu-monitor with libvirt 0.8.1

[Eric Blake]

On 08/31/2010 03:41 AM, Lai Jiangshan wrote:
>
> Hi, all
>
> I encounter this problem when I try to send NMI to guest.
> I don't know how. I think if I can access to the qemu-monitor, I can
> just do this command in the qemu-monitor: "nmi<cpu#>".
> But I don't know how to access to qemu-monitor, I think I can
> get help here.

The only way to do this with libvirt 0.8.1 is to write a wrapper script 
which adds arguments and invokes the real qemu, then point libvirt to 
the location of the wrapper instead of the real qemu.  Not the most 
trivial task.

> I noticed that libvirt 0.8.3 supports remote protocol and arbitrary qemu commands,
> but I did not found any document, how can I use it?

That's different than the 0.8.1 of your subject line.  Yes, 0.8.3 makes 
it easier to add additional arbitrary arguments to the qemu command line 
via your XML file.  The list archives has several examples of this; most 
recently:

https://www.redhat.com/archives/libvir-list/2010-August/msg00589.html

-- 
Eric Blake   eblake at redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org