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[Bug 1536540] [NEW] AttributeError: 'NoneType' object has no attribute 'port_name' when deleting an instance with QoS policy attached

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Itzik Brown <1536540@xxxxxxxxxxxxxxxxxx>
Date: Thu, 21 Jan 2016 09:08:26 -0000
Reply-to: Bug 1536540 <1536540@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

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

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: qos

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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:
  New

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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Follow ups

[Bug 1536540] Re: AttributeError: 'NoneType' object has no attribute 'port_name' when deleting an instance with QoS policy attached
From: OpenStack Infra, 2016-04-04