Public bug reported:

2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [None 
req-413ff802-0c14-47ad-8221-14d7e972bad3 - - - - -] Error while processing VIF 
ports: TypeError: %d format: a number is required, not list
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent Traceback (most 
recent call last):
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 2658, in rpc_loop
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
ports_not_ready_yet) = (self.process_port_info(
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 2453, in process_port_info
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     port_info = 
self.scan_ports(reg_ports, sync,
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 1764, in scan_ports
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
updated_ports.update(self.check_changed_vlans())
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 1795, in check_changed_vlans
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     LOG.info(
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1794, in info
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.log(INFO, msg, *args, **kwargs)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1832, in log
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.logger.log(level, msg, *args, **kwargs)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1500, in log
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self._log(level, msg, args, **kwargs)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1577, in _log
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.handle(record)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1587, in handle
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.callHandlers(record)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1649, in callHandlers
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
hdlr.handle(record)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 950, in handle
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.emit(record)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/fluent/handler.py", line 237, 
in emit
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     data = 
self.format(record)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 925, in format
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     return 
fmt.format(record)
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/oslo_log/formatters.py", line 
315, in format
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     message = 
{'message': record.getMessage(),
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 369, in getMessage
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     msg = msg % 
self.args
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent TypeError: %d 
format: a number is required, not list
2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
2021-04-25 03:19:37.304 1 INFO 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [None 
req-413ff802-0c14-47ad-8221-14d7e972bad3 - - - - -] Agent rpc_loop - 
iteration:127550 completed. Processed ports statistics: {'regular': {'added': 
0, 'updated': 0, 'removed': 0}}. Elapsed:0.041

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1926049

Title:
  check_changed_vlans failed

Status in neutron:
  New

Bug description:
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [None 
req-413ff802-0c14-47ad-8221-14d7e972bad3 - - - - -] Error while processing VIF 
ports: TypeError: %d format: a number is required, not list
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent Traceback (most 
recent call last):
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 2658, in rpc_loop
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
ports_not_ready_yet) = (self.process_port_info(
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 2453, in process_port_info
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     port_info = 
self.scan_ports(reg_ports, sync,
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 1764, in scan_ports
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
updated_ports.update(self.check_changed_vlans())
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py",
 line 1795, in check_changed_vlans
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     LOG.info(
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1794, in info
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.log(INFO, msg, *args, **kwargs)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1832, in log
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.logger.log(level, msg, *args, **kwargs)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1500, in log
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self._log(level, msg, args, **kwargs)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1577, in _log
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.handle(record)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1587, in handle
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.callHandlers(record)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 1649, in callHandlers
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
hdlr.handle(record)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 950, in handle
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     
self.emit(record)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/fluent/handler.py", line 237, 
in emit
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     data = 
self.format(record)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 925, in format
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     return 
fmt.format(record)
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/var/lib/openstack/lib/python3.8/site-packages/oslo_log/formatters.py", line 
315, in format
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     message = 
{'message': record.getMessage(),
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent   File 
"/usr/lib/python3.8/logging/__init__.py", line 369, in getMessage
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent     msg = msg % 
self.args
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent TypeError: %d 
format: a number is required, not list
  2021-04-25 03:19:37.303 1 ERROR 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
  2021-04-25 03:19:37.304 1 INFO 
neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [None 
req-413ff802-0c14-47ad-8221-14d7e972bad3 - - - - -] Agent rpc_loop - 
iteration:127550 completed. Processed ports statistics: {'regular': {'added': 
0, 'updated': 0, 'removed': 0}}. Elapsed:0.041

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