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[Doug Hellmann <doug@xxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1499821

Title:
  ovs_lib.OVSBridge.get_ports_attributes returns all ports in case
  there's no ports on the OVSBridge in question

Status in neutron:
  Fix Released

Bug description:
  If OVSBridge.get_ports_attributes is executed on an empty bridge,
  get_port_name_list will return an empty list. In which case,
  ovsdb.db_list is executed with port_names = [], meaning that it will
  return all ports, instead of no ports.

  The implication is that if, for example, br-ex (An ancillary bridge in
  the OVS agent) is currently empty, then scan_ancillary_ports will pick
  up all ports. All ports on the system will be considered
  ancillary_ports, which is unexpected and can result in ports going
  DOWN when they shouldn't.

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