Linux bridge has an execption with get device

[Gary Kotton]

Stderr: 'Device "eth0.1000" does not exist.\n'
DEBUG:quantum.agent.linux.utils:Running command: sudo ip link show dev brq49f6704c-18
2012-08-11 05:50:34 DEBUG [quantum.agent.linux.utils] Running command: sudo ip link show dev brq49f6704c-18
DEBUG:quantum.agent.linux.utils:
Command: ['sudo', 'ip', 'link', 'show', 'dev', 'brq49f6704c-18']
Exit code: 0
Stdout: ''
Stderr: 'Device "brq49f6704c-18" does not exist.\n'
2012-08-11 05:50:34 DEBUG [quantum.agent.linux.utils]
Command: ['sudo', 'ip', 'link', 'show', 'dev', 'brq49f6704c-18']
Exit code: 0
Stdout: ''
Stderr: 'Device "brq49f6704c-18" does not exist.\n'
Traceback (most recent call last):
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 756, in <module>
    main()
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 751, in main
    plugin.daemon_loop()
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 708, in daemon_loop
    sync = self.process_network_devices(device_info)
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 639, in process_network_devices
    resync_a = self.treat_devices_added(device_info['added'])
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 663, in treat_devices_added
    details['vlan_id'])
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 604, in process_port_binding
    return self.linux_br.add_interface(network_id, vlan_id, interface_id)
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 272, in add_interface
    return self.add_tap_interface(network_id, vlan_id, tap_device_name)
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 253, in add_tap_interface
    self.ensure_vlan_bridge(network_id, vlan_id)
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 182, in ensure_vlan_bridge
    self.ensure_bridge(bridge_name, interface)
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 225, in ensure_bridge
    if not self.interface_exists_on_bridge(bridge_name, interface):
  File "/opt/stack/quantum/quantum/plugins/linuxbridge/agent/linuxbridge_quantum_agent.py", line 87, in interface_exists_on_bridge
    for filename in os.listdir(directory):
OSError: [Errno 2] No such file or directory: '/sys/class/net/brq49f6704c-18/brif'
DEBUG:amqplib:Closed channel #1
2012-08-11 05:50:34 DEBUG [amqplib] Closed channel #1
openstack@openstack:~/devstack$

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/11209

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/11209
Committed: http://github.com/openstack/quantum/commit/77c90dbc960b0736a13d54f80b42f8a24667d627
Submitter: Jenkins
Branch: master

commit 77c90dbc960b0736a13d54f80b42f8a24667d627
Author: Gary Kotton <email address hidden>
Date: Sat Aug 11 12:58:18 2012 -0400

    In some cases device check causes an exception

    Fixes bug 1035669

    Check the stderr in addition to checking the return codes.

    Change-Id: I05e469302bc502b540b0c4af5fbd9c712a9bd309