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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1311971

Title:
  database exception causes UnboundLocalError in linuxbridge-agent

Status in OpenStack Neutron (virtual network service):
  Fix Released

Bug description:
  When database exception raises in update_device_down, the linuxbridge-
  agent doesn't deal with them in a proper way that causes accessing
  not-existed local variables.

  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent Traceback (most recent call last):
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent   File "/usr/lib/python2.6/site-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py", line 997, in daemon_loop
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent     sync = self.process_network_devices(device_info)
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent   File "/usr/lib/python2.6/site-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py", line 894, in process_network_devices
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent     resync_b = self.treat_devices_removed(device_info['removed'])
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent   File "/usr/lib/python2.6/site-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py", line 963, in treat_devices_removed
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent     if details['exists']:
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent UnboundLocalError: local variable 'details' referenced before assignment
  2014-04-22 20:35:53.436 494 TRACE neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent
  2014-04-22 20:35:53.437 494 DEBUG neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent [req-ffc712fc-80af-4837-a068-6e1a076e4ebc None] Loop iteration exceeded interval (2 vs. 51.2715768814)! daemon_loop /usr/lib/python2.6/site-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py:1011
  2014-04-22 20:35:53.438 494 INFO neutron.plugins.linuxbridge.agent.linuxbridge_neutron_agent [req-ffc712fc-80af-4837-a068-6e1a076e4ebc None] Agent out of sync with plugin!

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