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[Vincent Untz <1283765@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

(Using ML2 with ovs)

While playing with https://github.com/stackforge/cookbook-openstack-
network/blob/master/files/default/neutron-ha-tool.py to migrate routers
between L3 agents, I had the issue that the connectivity got lost.

After investigating, it turns out that interface for the port of the
router that is connected to the external network (attached to br-public
-- which is usually named br-ext) gets a tag. Manually removing the tag
makes things work.

I'm attaching a bit of the log where the port_update message is received (it's received for the two interfaces of the router, so this needs some care when reading). We can see the following:
 Running command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=2', 'set', 'Port', 'qg-923f9b0e-aa', 'tag=2']

However, reading the code, it seems that this kind of actions should
only be done for ports on br-int (because of "vif_port =
self.int_br.get_vif_port_by_id(port['id'])"). So this shouldn't be run
for other ports.

** Affects: neutron
     Importance: Undecided
     Assignee: Vincent Untz (vuntz)
         Status: In Progress


** Tags: havana-backport-potential

** Attachment added: "neutron-openvswitch-agent.log"
   https://bugs.launchpad.net/bugs/1283765/+attachment/3993020/+files/neutron-openvswitch-agent.log

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https://bugs.launchpad.net/bugs/1283765

Title:
  ovs plugin changes port it shouldn't change

Status in OpenStack Neutron (virtual network service):
  In Progress

Bug description:
  (Using ML2 with ovs)

  While playing with https://github.com/stackforge/cookbook-openstack-
  network/blob/master/files/default/neutron-ha-tool.py to migrate
  routers between L3 agents, I had the issue that the connectivity got
  lost.

  After investigating, it turns out that interface for the port of the
  router that is connected to the external network (attached to br-
  public -- which is usually named br-ext) gets a tag. Manually removing
  the tag makes things work.

  I'm attaching a bit of the log where the port_update message is received (it's received for the two interfaces of the router, so this needs some care when reading). We can see the following:
   Running command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=2', 'set', 'Port', 'qg-923f9b0e-aa', 'tag=2']

  However, reading the code, it seems that this kind of actions should
  only be done for ports on br-int (because of "vif_port =
  self.int_br.get_vif_port_by_id(port['id'])"). So this shouldn't be run
  for other ports.

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