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[Yi Sun <beyounn@xxxxxxxxx>]

Hi,
I used devstack to install openstack on my xenserver 6.0.2. I followed the video found in this link http://wiki.openstack.org/XenServer/DevStack. After installation, I can access dashboard. But I failed to launch an instance.
I tried to launch image "tty", after launching, the instance status field shows "Error" and there has no new VM  showing up in my xencenter.
I did a ps ax on my domU VM, I see following nova processes:
stack@ALLINONE:~/nova/bin$ ps ax | grep nova
 5246 pts/6    S+     0:02 python /opt/stack/nova/bin/nova-api
 5325 pts/8    S+     0:03 python /opt/stack/nova/bin/nova-cert
 5346 pts/9    S+     0:03 python /opt/stack/nova/bin/nova-volume
 5371 pts/10   S+     0:03 python /opt/stack/nova/bin/nova-network
 5426 pts/11   S+     0:03 python /opt/stack/nova/bin/nova-scheduler
 5457 pts/12   S+     0:00 python ./utils/nova-novncproxy --config-file /etc/nova/nova.conf --web .
 5477 pts/13   S+     0:00 python ./bin/nova-xvpvncproxy --config-file /etc/nova/nova.conf
 5497 pts/14   S+     0:03 python ./bin/nova-consoleauth
 5537 pts/16   S+     0:00 python /opt/stack/nova/bin/nova-objectstore

I'm not seeing nova-compute running. So I tried to start it manually, Then I got errors attached in later section.  Can someone help to take a look to see if I have missed anything during the installation?
Also, is there a way to see find more debug information when failed to launch a instance?

BTW-- I checked Dom0, I have 1.3G free space, is that enough to run nova-compute?
Thanks
Yi

012-04-12 03:42:33 CRITICAL nova [-] Unable to log in to XenAPI (is the Dom0 disk full?)
2012-04-12 03:42:33 TRACE nova Traceback (most recent call last):
2012-04-12 03:42:33 TRACE nova   File "./nova-compute", line 47, in <module>
2012-04-12 03:42:33 TRACE nova     server = service.Service.create(binary='nova-compute')
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/service.py", line 272, in create
2012-04-12 03:42:33 TRACE nova     periodic_fuzzy_delay=periodic_fuzzy_delay)
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/service.py", line 167, in __init__
2012-04-12 03:42:33 TRACE nova     self.manager = manager_class(host=self.host, *args, **kwargs)
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/compute/manager.py", line 198, in __init__
2012-04-12 03:42:33 TRACE nova     utils.import_object(compute_driver),
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/utils.py", line 90, in import_object
2012-04-12 03:42:33 TRACE nova     return cls()
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/virt/connection.py", line 76, in get_connection
2012-04-12 03:42:33 TRACE nova     conn = xenapi_conn.get_connection(read_only)
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/virt/xenapi_conn.py", line 144, in get_connection
2012-04-12 03:42:33 TRACE nova     return XenAPIConnection(url, username, password)
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/virt/xenapi_conn.py", line 152, in __init__
2012-04-12 03:42:33 TRACE nova     self._session = XenAPISession(url, user, pw)
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/virt/xenapi_conn.py", line 491, in __init__
2012-04-12 03:42:33 TRACE nova     url = self._create_first_session(url, user, pw, exception)
2012-04-12 03:42:33 TRACE nova   File "/opt/stack/nova/nova/virt/xenapi_conn.py", line 500, in _create_first_session
2012-04-12 03:42:33 TRACE nova     session.login_with_password(user, pw)
2012-04-12 03:42:33 TRACE nova   File "/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 182, in <lambda>
2012-04-12 03:42:33 TRACE nova     return lambda *params: self._login(name, params)
2012-04-12 03:42:33 TRACE nova   File "/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 148, in _login
2012-04-12 03:42:33 TRACE nova     result = _parse_result(getattr(self, 'session.%s' % method)(*params))
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/xmlrpclib.py", line 1224, in __call__
2012-04-12 03:42:33 TRACE nova     return self.__send(self.__name, args)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/xmlrpclib.py", line 1575, in __request
2012-04-12 03:42:33 TRACE nova     verbose=self.__verbose
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/xmlrpclib.py", line 1264, in request
2012-04-12 03:42:33 TRACE nova     return self.single_request(host, handler, request_body, verbose)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/xmlrpclib.py", line 1292, in single_request
2012-04-12 03:42:33 TRACE nova     self.send_content(h, request_body)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/xmlrpclib.py", line 1439, in send_content
2012-04-12 03:42:33 TRACE nova     connection.endheaders(request_body)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/httplib.py", line 951, in endheaders
2012-04-12 03:42:33 TRACE nova     self._send_output(message_body)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/httplib.py", line 811, in _send_output
2012-04-12 03:42:33 TRACE nova     self.send(msg)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/httplib.py", line 773, in send
2012-04-12 03:42:33 TRACE nova     self.connect()
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/httplib.py", line 754, in connect
2012-04-12 03:42:33 TRACE nova     self.timeout, self.source_address)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/dist-packages/eventlet/green/socket.py", line 52, in create_connection
2012-04-12 03:42:33 TRACE nova     sock.connect(sa)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/dist-packages/eventlet/greenio.py", line 168, in connect
2012-04-12 03:42:33 TRACE nova     trampoline(fd, write=True)
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/__init__.py", line 121, in trampoline
2012-04-12 03:42:33 TRACE nova     return hub.switch()
2012-04-12 03:42:33 TRACE nova   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 177, in switch
2012-04-12 03:42:33 TRACE nova     return self.greenlet.switch()
2012-04-12 03:42:33 TRACE nova Failure: Unable to log in to XenAPI (is the Dom0 disk full?)
2012-04-12 03:42:33 TRACE nova