Open Stack

Hello all,

I got a lot problems with XenServer + OpenStack and one more is with 
instance resize. When I attempt to resize instance nothing happens, only 
in nova-conductor.log <http://paste.openstack.org/show/55109/> I got 
some error messages. Maybe someone know how to fix this? Looks like 
schaduler can't find host, but in my setup in current moment I got only 
one host.

Error message:

2013-12-17 09:52:50.611 9598 WARNING nova.scheduler.utils 
[req-3f26dac5-e043-4173-a547-4988abf2120f 
a7712da5cc054f819886dbe5a89429d5 76619aca43f841e0bed1a3b89ce8b426] 
Failed to compute_task_migrate_server: No valid host was found.
Traceback (most recent call last):

   File 
"/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/common.py", 
line 420, in catch_client_exception
     return func(*args, **kwargs)

   File "/usr/lib/python2.7/dist-packages/nova/scheduler/manager.py", 
line 298, in select_destinations
     filter_properties)

   File 
"/usr/lib/python2.7/dist-packages/nova/scheduler/filter_scheduler.py", 
line 148, in select_destinations
     raise exception.NoValidHost(reason='')

NoValidHost: No valid host was found.

2013-12-17 09:52:50.615 9598 WARNING nova.scheduler.utils 
[req-3f26dac5-e043-4173-a547-4988abf2120f 
a7712da5cc054f819886dbe5a89429d5 76619aca43f841e0bed1a3b89ce8b426] 
[instance: cad657b7-85b7-487a-b659-22604d83364d] Setting instance to 
ACTIVE state.
2013-12-17 09:52:50.697 9598 WARNING nova.conductor.manager 
[req-3f26dac5-e043-4173-a547-4988abf2120f 
a7712da5cc054f819886dbe5a89429d5 76619aca43f841e0bed1a3b89ce8b426] No 
valid host found for cold migrate
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