ML2: L2POP delete unbond port get AttributeError

[LIU Yulong]

Env: devstack
neutron master branch source code install

VXLAN with l2pop

yulong@controller:/opt/openstack/neutron$ neutron port-create admin
Created a new port:
+-----------------------+--------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+--------------------------------------------------------------------------------------------------------------+
| admin_state_up | True |
| allowed_address_pairs | |
| binding:host_id | |
| binding:profile | {} |
| binding:vif_details | {} |
| binding:vif_type | unbound |
| binding:vnic_type | normal |
| device_id | |
| device_owner | |
| dns_assignment | {"hostname": "host-192-168-10-9", "ip_address": "192.168.10.9", "fqdn": "host-192-168-10-9.openstacklocal."} |
| dns_name | |
| fixed_ips | {"subnet_id": "eb4ae4dd-9ea3-4dbd-bf39-1cedf98aaeb2", "ip_address": "192.168.10.9"} |
| id | 1aa78747-7490-4f36-8dcf-e0389d7b86f9 |
| mac_address | fa:16:3e:82:c9:ba |
| name | |
| network_id | 5cc94919-c25d-413b-ae72-ad7a45530aef |
| port_security_enabled | True |
| security_groups | 1b1030b6-6c60-4429-866e-7693e133a0ce |
| status | DOWN |
| tenant_id | 91a6fdb6f9064fdda314579832a7ccbc |
+-----------------------+--------------------------------------------------------------------------------------------------------------+
yulong@controller:/opt/openstack/neutron$ neutron port-delete 1aa78747-7490-4f36-8dcf-e0389d7b86f9
Deleted port: 1aa78747-7490-4f36-8dcf-e0389d7b86f9

Exception LOG:

2016-01-15 17:16:41.028 ERROR neutron.plugins.ml2.managers [req-0aa22238-347d-4c9d-8a51-03ce6eaa1152 admin 91a6fdb6f9064fdda314579832a7ccbc] Mechanism driver 'l2population' failed in delete_port_postcommit
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers Traceback (most recent call last):
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers File "/opt/openstack/neutron/neutron/plugins/ml2/managers.py", line 401, in _call_on_drivers
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers getattr(driver.obj, method_name)(context)
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers File "/opt/openstack/neutron/neutron/plugins/ml2/drivers/l2pop/mech_driver.py", line 53, in delete_port_postcommit
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers fdb_entries = self._get_agent_fdb(context, port, agent_host)
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers File "/opt/openstack/neutron/neutron/plugins/ml2/drivers/l2pop/mech_driver.py", line 259, in _get_agent_fdb
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers agent_ip = self.get_agent_ip(agent)
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers File "/opt/openstack/neutron/neutron/plugins/ml2/drivers/l2pop/db.py", line 33, in get_agent_ip
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers configuration = jsonutils.loads(agent.configurations)
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers AttributeError: 'NoneType' object has no attribute 'configurations'
2016-01-15 17:16:41.028 TRACE neutron.plugins.ml2.managers
2016-01-15 17:16:41.029 ERROR neutron.plugins.ml2.plugin [req-0aa22238-347d-4c9d-8a51-03ce6eaa1152 admin 91a6fdb6f9064fdda314579832a7ccbc] mechanism_manager.delete_port_postcommit failed for port 1aa78747-7490-4f36-8dcf-e0389d7b86f9

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/268050

[Hong Hui Xiao (xiaohhui)]

I think this bug is duplicated with bug 1533013

[OpenStack Infra (hudson-openstack)]

Change abandoned by LIU Yulong (<email address hidden>) on branch: master
Review: https://review.openstack.org/268050
Reason: patch https://review.openstack.org/#/c/266114/ handle the AttributeError , and the function remove_fdb_entries already handle the empty fdb_entries.