Open Stack

Hi,

I am trying to use Openstack Grizzly to control XCP hypervisor with 
quantum ovs plugin. I tried with the steps which are mentioned in 
official document 
(http://docs.openstack.org/grizzly/openstack-compute/install/apt/content/introduction-to-xen.html#xen-config-reference) 
but it doesn't work for me. I am not able to start nova-compute service. 
It is giving me following error:

2013-10-04 18:23:44.861 32548 INFO nova.manager [-] Skipping periodic 
task _periodic_update_dns because its interval is negative
2013-10-04 18:23:44.902 32548 INFO nova.virt.driver [-] Loading compute 
driver 'xenapi.XenAPIDriver'
2013-10-04 18:23:44.922 32548 CRITICAL nova [-] [Errno 111] ECONNREFUSED
2013-10-04 18:23:44.922 32548 TRACE nova Traceback (most recent call last):
2013-10-04 18:23:44.922 32548 TRACE nova   File "/usr/bin/nova-compute", 
line 83, in <module>
2013-10-04 18:23:44.922 32548 TRACE nova     db_allowed=False)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/service.py", line 534, in create
2013-10-04 18:23:44.922 32548 TRACE nova     db_allowed=db_allowed)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/service.py", line 413, in __init__
2013-10-04 18:23:44.922 32548 TRACE nova     self.manager = 
manager_class(host=self.host, *args, **kwargs)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 353, in 
__init__
2013-10-04 18:23:44.922 32548 TRACE nova     self.driver = 
driver.load_compute_driver(self.virtapi, compute_driver)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/virt/driver.py", line 931, in 
load_compute_driver
2013-10-04 18:23:44.922 32548 TRACE nova     virtapi)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/openstack/common/importutils.py", 
line 51, in import_object_ns
2013-10-04 18:23:44.922 32548 TRACE nova     return 
import_class(import_value)(*args, **kwargs)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/virt/xenapi/driver.py", line 139, 
in __init__
2013-10-04 18:23:44.922 32548 TRACE nova     self._session = 
XenAPISession(url, username, password, self.virtapi)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/virt/xenapi/driver.py", line 630, 
in __init__
2013-10-04 18:23:44.922 32548 TRACE nova     url = 
self._create_first_session(url, user, pw, exception)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/nova/virt/xenapi/driver.py", line 641, 
in _create_first_session
2013-10-04 18:23:44.922 32548 TRACE nova 
session.login_with_password(user, pw)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 182, in <lambda>
2013-10-04 18:23:44.922 32548 TRACE nova     return lambda *params: 
self._login(name, params)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 148, in _login
2013-10-04 18:23:44.922 32548 TRACE nova     result = 
_parse_result(getattr(self, 'session.%s' % method)(*params))
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/xmlrpclib.py", line 1224, in __call__
2013-10-04 18:23:44.922 32548 TRACE nova     return 
self.__send(self.__name, args)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/xmlrpclib.py", line 1578, in __request
2013-10-04 18:23:44.922 32548 TRACE nova     verbose=self.__verbose
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/xmlrpclib.py", line 1264, in request
2013-10-04 18:23:44.922 32548 TRACE nova     return 
self.single_request(host, handler, request_body, verbose)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/xmlrpclib.py", line 1292, in single_request
2013-10-04 18:23:44.922 32548 TRACE nova     self.send_content(h, 
request_body)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/xmlrpclib.py", line 1439, in send_content
2013-10-04 18:23:44.922 32548 TRACE nova connection.endheaders(request_body)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/httplib.py", line 954, in endheaders
2013-10-04 18:23:44.922 32548 TRACE nova self._send_output(message_body)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/httplib.py", line 814, in _send_output
2013-10-04 18:23:44.922 32548 TRACE nova     self.send(msg)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/httplib.py", line 776, in send
2013-10-04 18:23:44.922 32548 TRACE nova     self.connect()
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/httplib.py", line 757, in connect
2013-10-04 18:23:44.922 32548 TRACE nova     self.timeout, 
self.source_address)
2013-10-04 18:23:44.922 32548 TRACE nova   File 
"/usr/lib/python2.7/dist-packages/eventlet/green/socket.py", line 59, in 
create_connection
2013-10-04 18:23:44.922 32548 TRACE nova     raise error, msg
2013-10-04 18:23:44.922 32548 TRACE nova error: [Errno 111] ECONNREFUSED
2013-10-04 18:23:44.922 32548 TRACE nova

It seems network with openvswitch is not configured properly.  Is there 
any OVS quantum plugin requires to run under dom0?  Is there any 
document which can briefly describe how Openstack + XCP works with OVS 
Quantum?

Regards,
Rajshree