Mirantis OpenStack

Trace is seen when disabling neutron-openvswitch-agent with of_interface=native

  1. Series 10.0.x
  2. Bug #1585131
Bug #1585131 reported by Inessa Vasilevskaya
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Mirantis OpenStack
Status tracked in 10.0.x
10.0.x
Confirmed
Medium
MOS Neutron
Mirantis OpenStack 10.0
9.x
Won't Fix
Medium
Inessa Vasilevskaya
Mirantis OpenStack 9.1

Bug Description

Mos 9.0, 3 controllers/1 compute.

Confuguration:
/etc/neutron/plugins/ml2/openvswitch_agent.ini has of_interface=native on all nodes.

After `pcs resource disable neutron-openvswitch-agent` the following trace is seen in neutron-openvswitch log:

2016-05-24 09:48:32 ERR ryu.lib.hub [-] hub: uncaught exception: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ryu/lib/hub.py", line 52, in _launch
    func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/ryu/base/app_manager.py", line 532, in close
    self.uninstantiate(app_name)
  File "/usr/lib/python2.7/dist-packages/ryu/base/app_manager.py", line 515, in uninstantiate
    app = self.applications.pop(name)
KeyError: 'ofctl_service'

Tags: area-neutron
Revision history for this message
Sergey Kolekonov (skolekonov) wrote :

Please note that of_interface=native was set manually and it's not the default option for MOS 9.0

Sergey Kolekonov (skolekonov)
Changed in mos:
assignee: nobody → MOS Neutron (mos-neutron)
milestone: none → 10.0
Dina Belova (dbelova)
tags: added: area-neutron
Changed in mos:
status: New → Confirmed
importance: Undecided → High
Revision history for this message
Inessa Vasilevskaya (ivasilevskaya) wrote :

This is also seen on compute node when stopping neutron-openvswitch-agent via

service neutron-openvswitch-agent stop.

Revision history for this message
Inessa Vasilevskaya (ivasilevskaya) wrote :

That's the reason - https://review.openstack.org/#/c/257204/6.
The close is performed in 2 eventlet threads with the applications being uninstantiated twice (see ryu's lib code https://github.com/osrg/ryu/blob/master/ryu/base/app_manager.py#L544)

Revision history for this message
Inessa Vasilevskaya (ivasilevskaya) wrote :

https://review.openstack.org/#/c/326437/1 - upstream patch

Revision history for this message
Inessa Vasilevskaya (ivasilevskaya) wrote :

The issue was fixed in ryu 4.4 (verified on devstack), will be fixed in Newton by requirements update (https://review.openstack.org/#/c/336799/).

Alexander Ignatov (aignatov)
Changed in mos:
status: Confirmed → Won't Fix
Eugene Nikanorov (enikanorov)
Changed in mos:
status: Won't Fix → Confirmed
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