neutron-openvswitch-agent backtrace at ovs_bridge.py

[Serguei Bezverkhi]

On the latest master (August 20,2016) I consistently observe a traceback in neutron-openvswitch-agent.log

2016-08-20 15:39:35.542 16 ERROR ryu.lib.hub [-] hub: uncaught exception: Traceback (most recent call last):
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/ryu/lib/hub.py", line 54, in _launch
    return func(*args, **kwargs)
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ovs_ryuapp.py", line 35, in agent_main_wrapper
    ovs_agent.main(bridge_classes)
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 2158, in main
    agent = OVSNeutronAgent(bridge_classes, cfg.CONF)
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 168, in __init__
    self.setup_integration_br()
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/osprofiler/profiler.py", line 154, in wrapper
    return f(*args, **kwargs)
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 1004, in setup_integration_br
    self.int_br.setup_default_table()
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/br_int.py", line 43, in setup_default_table
    self.install_normal()
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ofswitch.py", line 160, in install_normal
    (_dp, ofp, _ofpp) = self._get_dp()
  File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ovs_bridge.py", line 49, in _get_dp
    self._cached_dpid = int(dpid_str, 16)
TypeError: int() can't convert non-string with explicit base

[Serguei Bezverkhi (sbezverk)]

fb4240eb-1e3b-4442-8a82-aa5fb8adda80
    Bridge br-tnts
        Port br-tnts
            Interface br-tnts
                type: internal
    Bridge br-ex
        Port "eth1"
            Interface "eth1"
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
        fail_mode: secure
        Port br-int
            Interface br-int
                type: internal

[Serguei Bezverkhi (sbezverk)]

It looks like it is related:

2016-08-20T20:33:01.488Z|00253|ofproto|ERR|failed to open datapath br-int: No such file or directory
2016-08-20T20:33:01.488Z|00254|bridge|ERR|failed to create bridge br-int: No such file or directory
2016-08-20T20:33:01.488Z|00255|dpif|WARN|failed to enumerate system datapaths: No such file or directory
2016-08-20T20:33:01.488Z|00256|dpif|WARN|failed to create datapath ovs-system: No such file or directory
2016-08-20T20:33:01.488Z|00257|ofproto_dpif|ERR|failed to open datapath of type system: No such file or directory
2016-08-20T20:33:01.488Z|00258|ofproto|ERR|failed to open datapath br-tnts: No such file or directory
2016-08-20T20:33:01.488Z|00259|bridge|ERR|failed to create bridge br-tnts: No such file or directory
2016-08-20T20:33:01.493Z|00260|dpif|WARN|failed to enumerate system datapaths: No such file or directory
2016-08-20T20:33:01.493Z|00261|dpif|WARN|failed to create datapath ovs-system: No such file or directory
2016-08-20T20:33:01.493Z|00262|ofproto_dpif|ERR|failed to open datapath of type system: No such file or directory
2016-08-20T20:33:01.493Z|00263|ofproto|ERR|failed to open datapath br-ex: No such file or directory
2016-08-20T20:33:01.494Z|00264|bridge|ERR|failed to create bridge br-ex: No such file or directory
2016-08-20T20:33:01.494Z|00265|dpif|WARN|failed to enumerate system datapaths: No such file or directory
2016-08-20T20:33:01.494Z|00266|dpif|WARN|failed to create datapath ovs-system: No such file or directory
2016-08-20T20:33:01.494Z|00267|ofproto_dpif|ERR|failed to open datapath of type system: No such file or directory
2016-08-20T20:33:01.494Z|00268|ofproto|ERR|failed to open datapath br-int: No such file or directory
2016-08-20T20:33:01.494Z|00269|bridge|ERR|failed to create bridge br-int: No such file or directory
2016-08-20T20:33:01.494Z|00270|dpif|WARN|failed to enumerate system datapaths: No such file or directory
2016-08-20T20:33:01.494Z|00271|dpif|WARN|failed to create datapath ovs-system: No such file or directory

[Armando Migliaccio (armando-migliaccio)]

Without steps to repro, we are unable to confirm this. Please follow bug report submission guidelines:

http://docs.openstack.org/developer/neutron/policies/bugs.html

[Serguei Bezverkhi (sbezverk)]

The repro is very easy, you need to unload openvswitch module and it will break ovs datapath.

[Launchpad Janitor (janitor)]

[Expired for neutron because there has been no activity for 60 days.]