When I run quantum + nova in 5 host machine and launch 100 VMs.
I got following exception on the quantum-metadata server.
I'm still not sure the cause, yet
X-Quantum-Router-Id: 2617637b-a3f9-4d0f-8fc5-458bbbfb5d0e __call__ /opt/stack/quantum/quantum/agent/metadata/agent.py:81
2013-03-05 15:28:51.465 5974 ERROR quantum.agent.metadata.agent [-] Unexpected error.
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent Traceback (most recent call last):
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/opt/stack/quantum/quantum/agent/metadata/agent.py", line 83, in __call__
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent instance_id = self._get_instance_id(req)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/opt/stack/quantum/quantum/agent/metadata/agent.py", line 111, in _get_instance_id
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent fixed_ips=['ip_address=%s' % remote_address])['ports']
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/usr/local/lib/python2.7/dist-packages/quantumclient/v2_0/client.py", line 106, in with_params
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent ret = self.function(instance, *args, **kwargs)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/usr/local/lib/python2.7/dist-packages/quantumclient/v2_0/client.py", line 249, in list_ports
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent return self.get(self.ports_path, params=_params)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/usr/local/lib/python2.7/dist-packages/quantumclient/v2_0/client.py", line 901, in get
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent headers=headers, params=params)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/usr/local/lib/python2.7/dist-packages/quantumclient/v2_0/client.py", line 886, in retry_request
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent headers=headers, params=params)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/usr/local/lib/python2.7/dist-packages/quantumclient/v2_0/client.py", line 831, in do_request
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent self._handle_fault_response(status_code, replybody)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/usr/local/lib/python2.7/dist-packages/quantumclient/v2_0/client.py", line 812, in _handle_fault_response
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent exception_handler_v20(status_code, des_error_body)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent File "/usr/local/lib/python2.7/dist-packages/quantumclient/v2_0/client.py", line 86, in exception_handler_v20
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent message=message)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent QuantumClientException: Second simultaneous read on fileno 11 detected. Unless you really know what you're doing, make sure that only one greenthread can read any particular socket. Consider using a pools.Pool. If you do know what you're doing and want to disable this error, call eventlet.debug.hub_multiple_reader_prevention(False)
2013-03-05 15:28:51.465 5974 TRACE quantum.agent.metadata.agent
2013-03-05 15:28:51.481 5974 DEBUG quantum.agent.metadata.agent [-] Request: GET /2009-04-04/meta-data/block-device-mapping/Internal HTTP/1.0
adding to RC1 so its on our radar.