On Thu, Jun 11, 2015 at 3:51 AM, Daniel P. Berrange <berrange@redhat.com> wrote:
On Thu, Jun 11, 2015 at 09:17:30AM +0100, Daniel P. Berrange wrote:
> On Thu, Jun 11, 2015 at 01:51:33PM +0800, zhang bo wrote:
> > Different OSes have different capabilities and behaviors sometimes. We have to distinguish them then.
> >
> > For example, our clients want to send NMI interrupts to certain guests(eg.Linux distributions), but not others(eg.Windows guests).
> > They want to acquire the list below:
> >   guest1: RHEL 7
> >   guest2: RHEL 7
> >   guest3: Ubuntu 12
> >   guest4: Ubuntu 13
> >   guest5: Windows 7
> >   ......
> >
> > AFAIK, neither libvirt nor openstack, nor qemu, have such capbility of showing these guest OS infos.
> > Libvirt now supports to show host capabilities and driver capability, but not an individual guest OS's capibility. We may refer to
> > http://libvirt.org/formatdomaincaps.html for more information.
> >


Hello.  I wrote a utility a few years ago to detect which OS is running in each qemu VM under libvirt via memory probing.  I have not touched the code in a few years.  YMMV.

http://pastebin.com/m0mfcK8G