[et-mgmt-tools] Virt-manager won't connect to Xen hypervisor

Hugh Brock hbrock at redhat.com
Thu Jun 14 14:27:40 UTC 2007

Steve Brueckner wrote:
> I've installed Fedora 7, Xen 3.1 (from source), and virt-manager 0.4 (from
> rpms).  The machine is VMX/VT-x capable.  I have managed to build and run a
> paravirtualized Linux guest just fine.  Now I want to build an HVM Linux
> guest, but virt-manager tells me "unable to open a connection to the Xen
> hypervisor/daemon."  I've confirmed that both xend and libvirtd are running.
> Here are the error details:
> ------------------->8------------------
> Unable to open connection to hypervisor URI 'xen':
> <class 'libvirt.libvirtError'> virConnectOpenReadOnly() failed
> Traceback (most recent call last):
>   File "/usr/share/virt-manager/virtManager/engine.py", line 68, in
> _connect_to_uri
>     conn = self.get_connection(uri, readOnly)
>   File "/usr/share/virt-manager/virtManager/engine.py", line 309, in
> get_connection
>     conn = vmmConnection(self.get_config(), uri, readOnly)
>   File "/usr/share/virt-manager/virtManager/connection.py", line 74, in
> __init__
>     self.vmm = libvirt.openReadOnly(openURI)
>   File "/usr/lib/python2.5/site-packages/libvirt.py", line 109, in
> openReadOnly
>     if ret is None:raise libvirtError('virConnectOpenReadOnly() failed')
> libvirtError: virConnectOpenReadOnly() failed
> -------------------8<------------------
> Can anyone see what I'm missing or what's broken?  If not, what should I do
> next to debug or fix this?
> Thanks,
> Steve Brueckner, ATC-NY

We're going to need some more information: /var/log/xend/xend.log, 
/root/.virt-manager/virt-manager.log, and the libvirt version you are 
using. Are you using our xen 3.1 package (from Fedora 7) or XenSource's?


Red Hat Virtualization Group http://redhat.com/virtualization
Hugh Brock           | virt-manager http://virt-manager.org
hbrock at redhat.com    | virtualization library http://libvirt.org

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