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[Rodolfo Alonso <1672610@xxxxxxxxxxxxxxxxxx>]

Bug closed due to lack of activity, please feel free to reopen if
needed.

The other related bugs are fixed and released.

** Changed in: neutron
       Status: In Progress => Won't Fix

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https://bugs.launchpad.net/bugs/1672610

Title:
  ofctl request Datapath Invalid errors

Status in neutron:
  Won't Fix

Bug description:
  openflow connection is sometimes lost and the subsequent openflow command fails. ~70 occurences in a week in logstash search.
  Retrying should save such cases.

  example:

  http://logs.openstack.org/98/436798/25/check/gate-tempest-dsvm-
  neutron-full-centos-7-nv/3d5e54b/logs/screen-neutron-
  agent.txt.gz#_2017-03-13_06_54_30_891

  2017-03-13 06:54:30.896 16978 ERROR OfctlService [-] unknown dpid 143366513125697
  2017-03-13 06:54:30.897 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.ofswitch [req-a1036712-2598-48a8-8a38-8e7eacc0ed8f None None] ofctl request version=None,msg_type=None,msg_len=None,xid=None,OFPFlowStatsRequest(cookie=0,cookie_mask=0,flags=0,match=OFPMatch(oxm_fields={}),out_group=4294967295,out_port=4294967295,table_id=23,type=1) error Datapath Invalid 143366513125697
  2017-03-13 06:54:30.898 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int [req-a1036712-2598-48a8-8a38-8e7eacc0ed8f None None] Failed to communicate with the switch
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int Traceback (most recent call last):
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int   File "/opt/stack/new/neutron/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/br_int.py", line 52, in check_canary_table
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int     flows = self.dump_flows(constants.CANARY_TABLE)
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int   File "/opt/stack/new/neutron/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ofswitch.py", line 131, in dump_flows
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int     reply_multi=True)
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int   File "/opt/stack/new/neutron/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ofswitch.py", line 79, in _send_msg
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int     raise RuntimeError(m)
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int RuntimeError: ofctl request version=None,msg_type=None,msg_len=None,xid=None,OFPFlowStatsRequest(cookie=0,cookie_mask=0,flags=0,match=OFPMatch(oxm_fields={}),out_group=4294967295,out_port=4294967295,table_id=23,type=1) error Datapath Invalid 143366513125697
  2017-03-13 06:54:30.898 16978 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int
  2017-03-13 06:54:30.907 WARNING neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-a1036712-2598-48a8-8a38-8e7eacc0ed8f None None] OVS is dead. OVSNeutronAgent will keep running and checking OVS status periodically.

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