[Xen-users] Problem with xen/libvirt on CentOS 5.2

Alain Barthe
Wed, 20 Aug 2008 14:29:18 -0000

Hi,

After some unsuccessful live migrations, virt-manager does no more work, it
can no more connect to the dom0. I suppose that is related to the error
below from virsh :

[root@dev31xen2 ~]# LANG=en_GB virsh list
 Id Name                 State
----------------------------------
  0 Domain-0             running
libvir: Xen error : Domain not found: xenUnifiedDomainLookupByID
 10 tst31domu            blocked

...while "xm" commands work as usual.

Looks like the libvirt related tools try to maintain informations about
inactive domU among several dom0, and get lost when a migration is failing.
Restarting xend and libvirtd (a new stuff in this version) does not fix
anything. I didn''t try the reboot of the dom0 as it is not possible in
real
life. The existence or not of the domU config file in the /etc/xen directory
changes nothing.

The question is : from which information libvirt is working ? From xenstore
(I saw that all domU that have been active somewhen on a dom0 are kept in
the xenstore database) ?

Thanks for your reply.

Alain.


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