[libvirt] hellolibvirt: no hypervisor driver available for xen:///

Ganesh Pagade ganesh.pagade at gmail.com
Wed Apr 14 13:35:19 UTC 2010


Thanks Daniel. After installing xen-devel and rebuilding libvirt, the sample
program worked.

-Ganesh

On Wed, Apr 14, 2010 at 2:48 PM, Daniel P. Berrange <berrange at redhat.com>wrote:

> On Tue, Apr 13, 2010 at 11:37:01PM +0530, Ganesh Pagade wrote:
> > Hi,
> >
> > I downloaded and built the latest libvirt source code 0.8. I installed
> the
> > library in a custom directory libvirt-0.8.0-install/ keeping all other
> > configurations default.
> >
> > After this I tried to execute the example hellolibvirt:
> >
> > [hellolibvirt]# ./hellolibvirt xen
> > Attempting to connect to hypervisor
> > libvir: Remote error : unable to connect to
> > '/root/ganeshp/libvirt-0.8.0-install/var/run/libvirt/libvirt-sock',
> libvirtd
> > may need to be started: Connection refused
> > No connection to hypervisor
> > Parameter error when attempting to get last error
> >
> > My libvirtd was running from /etc/init.d/libvirtd. Still why is it trying
> to
> > connect to the newly built libvirtd?
> >
> > I stopped the /etc/init.d/libvirtd and started my newly built daemon:
> > [hellolibvirt]# /root/ganeshp/libvirt-0.8.0-install/sbin/libvirtd start &
> > 04:47:07.534: warning : qemudStartup:1574 : Unable to create cgroup for
> > driver: No such device or address
> > 04:47:07.540: error : parse_socket:126 : cannot open
> > /sys/devices/system/cpu/cpu1/topology/physical_package_id: No such file
> or
> > directory
> > 04:47:07.540: warning : qemudCapsInit:1068 : Failed to get host CPU
> > 04:47:07.544: warning : lxcStartup:1835 : Unable to create cgroup for
> > driver: No such device or address
> >
> > After this I tried running hellolibvirt example again:
> > [hellolibvirt]# ./hellolibvirt xen
> > Attempting to connect to hypervisor
> > 04:48:43.166: error : virLibConnError:450 : no hypervisor driver
> available
> > for xen:///
> > libvir: error : no hypervisor driver available for xen:///
> > libvir: error : no hypervisor driver available for xen:///
>
> This means you have built libvirt without Xen support. It should have told
> you after you ran 'configure' which drivers were enabled.
>
> Daniel
> --
> |: Red Hat, Engineering, London    -o-
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