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[Oleg Bondarev <obondarev@xxxxxxxxxxxx>]

** Project changed: neutron => mos

** Tags added: area-neutron

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https://bugs.launchpad.net/bugs/1666549

Title:
  Infinite router update in neutron L3 agent (HA)

Status in Mirantis OpenStack:
  New

Bug description:
  After fresh deployment of environment and launched ostf tests (or rally), neutron l3 agent logs on nodes filled (every .003 second timestamp) with such traces:
  http://paste.openstack.org/show/599851/
  which causes cluster fall when log partition will filled up.  

  
  Environment: Fuel 9.0 upgraded to 9.2, fresh install
  3 controllers/kafka + 3 computes + 4 storage ceph-osd + 1 LMA nodes

  neutron agents 8.3.0:
  neutron-dhcp-agent                   2:8.3.0-1~u14.04+mos30                     all          OpenStack virtual network service - DHCP agent
  neutron-l3-agent                     2:8.3.0-1~u14.04+mos30                     all          OpenStack virtual network service - l3 agent
  neutron-lbaasv2-agent                2:8.3.0-2~u14.04+mos1                      all          Neutron is a virtual network service for Openstack - LBaaSv2 agent
  neutron-metadata-agent               2:8.3.0-1~u14.04+mos30                     all          OpenStack virtual network service - metadata agent
  neutron-openvswitch-agent            2:8.3.0-1~u14.04+mos30                     all          OpenStack virtual network service - Open vSwitch agent

  Steps to reproduce:
  1. Deploy openstack witj Fuel 9.2
  2. Create rally venv and run  scenario
      NeutronNetworks.create_and_delete_routers (concurrency 100 and times 100, or  more)
  3. /var/log/neutron/l3-agent.log full of these traces.

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