DHCP agent does not resync with Quantum service

[Gary Kotton]

2013-06-06 04:18:28 ERROR [quantum.agent.dhcp_agent] Failed reporting state!
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/quantum/agent/dhcp_agent.py", line 700, in _report_state
    self.agent_state)
  File "/usr/lib/python2.6/site-packages/quantum/agent/rpc.py", line 66, in report_state
    topic=self.topic)
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/proxy.py", line 80, in call
    return rpc.call(context, self._get_topic(topic), msg, timeout)
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/__init__.py", line 140, in call
    return _get_impl().call(CONF, context, topic, msg, timeout)
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/impl_qpid.py", line 611, in call
    rpc_amqp.get_connection_pool(conf, Connection))
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/amqp.py", line 613, in call
    rv = list(rv)
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/amqp.py", line 555, in __iter__
    self.done()
  File "/usr/lib64/python2.6/contextlib.py", line 23, in __exit__
    self.gen.next()
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/amqp.py", line 552, in __iter__
    self._iterator.next()
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/impl_qpid.py", line 436, in iterconsume
    yield self.ensure(_error_callback, _consume)
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/impl_qpid.py", line 380, in ensure
    error_callback(e)
  File "/usr/lib/python2.6/site-packages/quantum/openstack/common/rpc/impl_qpid.py", line 421, in _error_callback
    raise rpc_common.Timeout()
Timeout: Timeout while waiting on RPC response.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/31950

[yong sheng gong (gongysh)]

garyk:
from your code, I don't think it is a bug. state report is a separate thread from sync logic after it starts the agent by self.run(). If the agent is not started by self.run(), the sync logic does not start at all. When the sync logic started, the start report is a different logic from sync logic.

i.e. if state report is throwing exception after sync logic started due to the quantum server connection, the sync logic will throw exception itself, and then it will resync itself.

[Gary Kotton (garyk)]

Hi,
This bug is no longer valid due to fix of bug https://bugs.launchpad.net/neutron/+bug/1191768 (https://review.openstack.org/#/c/33254/).
Thanks
Gary

[Salvatore Orlando (salvatore-orlando)]

Cool. I've 'neutralized' it.