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



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 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
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