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Reviewed:  https://review.openstack.org/344859
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=11dc21d3a6d765f7bcc95548b55ff13c4397c2e7
Submitter: Jenkins
Branch:    master

commit 11dc21d3a6d765f7bcc95548b55ff13c4397c2e7
Author: Terry Wilson <twilson@xxxxxxxxxx>
Date:   Fri Apr 22 08:55:11 2016 -0500

    Wait for vswitchd to add interfaces in native ovsdb
    
    ovs-vsctl, unless --no-wait is passed, will wait until ovs-vswitchd
    has reacted to a successful transaction. This patch implements
    the same logic, waiting for next_cfg to be incremented and checking
    that any added interfaces have actually been assigned ofports.
    
    Closes-Bug: #1604816
    Closes-Bug: #1604370
    Related-Bug: #1604115
    Change-Id: I638b82c13394f150c0bd23301285bd3375e66139


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1604370

Title:
  functional: test_legacy_router_ns_rebuild is unstable

Status in neutron:
  Fix Released

Bug description:
  logstash query: http://goo.gl/xfeSlj
  13 hits in last 7 days

  Example of failure: http://logs.openstack.org/01/312401/8/check/gate-
  neutron-dsvm-functional/6aedd17/logs/dsvm-functional-
  logs/neutron.tests.functional.agent.l3.test_legacy_router.L3AgentTestCase.test_legacy_router_ns_rebuild.txt.gz#_2016-07-19_10_45_28_248

  Traceback:
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info [req-8e9eaf17-43d7-46e4-8179-84cb18fa106e - - - - -] Exit code: 1; Stdin: ; Stdout: ; Stderr: Cannot find device "qg-85bf65ee-a2"
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info Traceback (most recent call last):
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/common/utils.py", line 239, in call
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     return func(*args, **kwargs)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/l3/router_info.py", line 1035, in process
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     self.process_external(agent)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/l3/router_info.py", line 817, in process_external
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     self._process_external_gateway(ex_gw_port, agent.pd)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/l3/router_info.py", line 695, in _process_external_gateway
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     self.external_gateway_added(ex_gw_port, interface_name)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/l3/router_info.py", line 660, in external_gateway_added
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     ex_gw_port, interface_name, self.ns_name, preserve_ips)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/l3/router_info.py", line 606, in _external_gateway_added
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     self._plug_external_gateway(ex_gw_port, interface_name, ns_name)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/l3/router_info.py", line 573, in _plug_external_gateway
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     mtu=ex_gw_port.get('mtu'))
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/linux/interface.py", line 251, in plug
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     bridge, namespace, prefix, mtu)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/linux/interface.py", line 344, in plug_new
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     ns_dev.link.set_address(mac_address)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/linux/ip_lib.py", line 496, in set_address
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     self._as_root([], ('set', self.name, 'address', mac_address))
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/linux/ip_lib.py", line 362, in _as_root
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     use_root_namespace=use_root_namespace)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/linux/ip_lib.py", line 95, in _as_root
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     log_fail_as_error=self.log_fail_as_error)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/linux/ip_lib.py", line 104, in _execute
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     log_fail_as_error=log_fail_as_error)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info   File "neutron/agent/linux/utils.py", line 138, in execute
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info     raise RuntimeError(msg)
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info RuntimeError: Exit code: 1; Stdin: ; Stdout: ; Stderr: Cannot find device "qg-85bf65ee-a2"
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info 
  2016-07-19 10:45:28.248 27850 ERROR neutron.agent.l3.router_info

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