Xen users - Aug 2012 - virt-manager unable to connect to libvirt after update

Hi there.

I'm running a Xen-Server using the OpenSuSE Tumbleweed repository. After I
updated this system the day before (zypper dup --from Tumbleweed; zypper up;
reboot) virt-manager is not able to connect to libvirt anymore. All domU's
are up and running, "xm list" shows them correctly, but virt-manager
reports the following after start:

 Unable to connect to libvirt.

 internal error libxenlight state driver is not active

 Verify that:
  - A Xen host kernel was booted
  - The Xen service has been started

 Details
 Unable to connect to libvirt.

 internal error libxenlight state driver is not active

 Verify that:
  - A Xen host kernel was booted
  - The Xen service has been started

 Libvirt URI is: xen:///

 Traceback (most recent call last):
   File "/usr/share/virt-manager/virtManager/connection.py", line
1027, in _open_thread
     self.vmm = self._try_open()
   File "/usr/share/virt-manager/virtManager/connection.py", line
1009, in _try_open
     flags)
   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 102, in
openAuth
     if ret is None:raise libvirtError('virConnectOpenAuth() failed')
 libvirtError: internal error libxenlight state driver is not active

rclibvirtd status reports:
 libvirtd.service - Virtualization daemon
           Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled)
           Active: active (running) since Tue, 28 Aug 2012 09:19:18 +0200; 33min
ago
         Main PID: 11360 (libvirtd)
           CGroup: name=systemd:/system/libvirtd.service
                   └ 11360 /usr/sbin/libvirtd --listen

# uname -a
 Linux tower-core 3.5.2-39-xen #1 SMP Wed Aug 15 21:49:59 UTC 2012 (4904750)
x86_64 x86_64 x86_64 GNU/Linux

# rpm -q xen
 xen-4.1.2_17-1.10.1.x86_64

Any idea what goes wrong?

Best regards
Ralf--
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On Wed, 2012-08-29 at 07:39 +0100, Ralf Müller wrote:
> Hi there.
> 
> I''m running a Xen-Server using the OpenSuSE Tumbleweed repository.
> After I updated this system the day before (zypper dup --from
> Tumbleweed; zypper up; reboot) virt-manager is not able to connect to
> libvirt anymore. All domU''s are up and running, "xm
list" shows them
> correctly,
"xm list" implies you are using xend here.
>  but virt-manager reports the following after start:
> 
>  Unable to connect to libvirt.
> 
>  internal error libxenlight state driver is not active
But this suggests that libvirt is trying to use the libxenlight backend
and not the xend based one.

That''s something to investigate, I''m afraid I don''t
know enough about
libvirt or SuSE to direct further. Perhaps you might have more luck on
one of the OpenSuSE xen lists?

Ian.

Am 29.08.2012 um 09:46 schrieb Ian Campbell:
> On Wed, 2012-08-29 at 07:39 +0100, Ralf Müller wrote:
>> All domU''s are up and running, "xm list" shows them
>> correctly,
> 
> "xm list" implies you are using xend here.
Thats correct.
>> but virt-manager reports the following after start:
>> 
>> Unable to connect to libvirt.
>> 
>> internal error libxenlight state driver is not active
> 
> But this suggests that libvirt is trying to use the libxenlight backend
> and not the xend based one.
Ok - I thought this would be a general move of the xen infrastructure.
> That''s something to investigate, I''m afraid I
don''t know enough about
> libvirt or SuSE to direct further. Perhaps you might have more luck on
> one of the OpenSuSE xen lists?
Ah - I tried it on the OpenSuSE general problems list. No answers so far. You
are right - I should have done it on a more specialized list.

Thanks for your answer
Ralf