Reviewed:  https://review.openstack.org/300679
Committed: 
https://git.openstack.org/cgit/openstack/neutron/commit/?id=213d48df014eebdc96a70a9369ffc9701f419f9f
Submitter: Jenkins
Branch:    master

commit 213d48df014eebdc96a70a9369ffc9701f419f9f
Author: Sławek Kapłoński <[email protected]>
Date:   Fri Apr 1 22:00:41 2016 +0000

    Improve handle port_update and port_delete events in ovs qos agent
    
    This patch improves getting vif port name from port info in Openvswitch QoS
    extension driver. It will prevent to have tracebacks with info that NoneType
    object has no attribute. Such situation could happen if extension driver 
handled
    event on port which was already deleted
    
    Change-Id: Ib76630183f1091436f1cd282a91cbce5fb151716
    Closes-Bug: #1536540


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1536540

Title:
  AttributeError: 'NoneType' object has no attribute 'port_name' when
  deleting an instance with QoS policy attached

Status in neutron:
  Fix Released

Bug description:
  After deleting an instance with a port the has a QoS policy attached
  the following Trace occurs in the OVS agent log:

  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager 
Traceback (most recent call last):
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager   
File "/usr/lib/python2.7/site-packages/neutron/agent/l2/extensions/manager.py", 
line 77, in delete_port
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager     
extension.obj.delete_port(context, data)
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager   
File "/usr/lib/python2.7/site-packages/neutron/agent/l2/extensions/qos.py", 
line 239, in delete_port
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager     
self._process_reset_port(port)
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager   
File "/usr/lib/python2.7/site-packages/neutron/agent/l2/extensions/qos.py", 
line 254, in _process_reset_port
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager     
self.qos_driver.delete(port)
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager   
File "/usr/lib/python2.7/site-packages/neutron/agent/l2/extensions/qos.py", 
line 89, in delete
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager     
self._handle_rule_delete(port, rule_type)
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager   
File "/usr/lib/python2.7/site-packages/neutron/agent/l2/extensions/qos.py", 
line 104, in _handle_rule_delete
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager     
handler(port)
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager   
File 
"/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/extension_drivers/qos_driver.py",
 line 49, in delete_bandwidth_limit
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager     
port_name = port['vif_port'].port_name
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager 
AttributeError: 'NoneType' object has no attribute 'port_name'
  2016-01-21 04:02:22.634 21316 ERROR neutron.agent.l2.extensions.manager 
  2016-01-21 04:02:22.636 21316 INFO 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent 
[req-b605ce4f-c832-4d8c-a7a7-ee8b89f47e4a - - - - -] port_unbound(): net_uuid 
None not in local_vlan_map
  2016-01-21 04:02:22.637 21316 INFO neutron.agent.securitygroups_rpc 
[req-b605ce4f-c832-4d8c-a7a7-ee8b8

  How to reproduce
  ===============
  1. Enable QoS
  2. Create a QoS policy and a rule
  3. Launch an instance 
  4. Attach the QoS policy to a the port of the instance
  5. Delete the instance and check the OVS agent's log

  Version
  ======
  RHEL7.2
  Liberty
  python-neutron-7.0.1-6.el7ost.noarch
  openstack-neutron-ml2-7.0.1-6.el7ost.noarch
  openstack-neutron-openvswitch-7.0.1-6.el7ost.noarch
  openstack-neutron-common-7.0.1-6.el7ost.noarch
  openstack-neutron-7.0.1-6.el7ost.noarch

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