The stack trace is the following:
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: ------
Green Thread ------
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/bin/neutron-linuxbridge-agent:8 in <module>
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `sys.exit(main())`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/neutron/cmd/eventlet/plugins/linuxbridge_neutron_agent.py:21
in main
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
`agent_main.main()`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/neutron/plugins/ml2/drivers/linuxbridge/agent/linuxbridge_neutron_agent.py:1055
in main
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `manager =
LinuxBridgeManager(bridge_mappings, interface_mappings)`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/neutron/plugins/ml2/drivers/linuxbridge/agent/linuxbridge_neutron_agent.py:93
in __init__
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
`self.check_vxlan_support()`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/neutron/plugins/ml2/drivers/linuxbridge/agent/linuxbridge_neutron_agent.py:745
in check_vxlan_sup
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `if
self.vxlan_ucast_supported():`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/neutron/plugins/ml2/drivers/linuxbridge/agent/linuxbridge_neutron_agent.py:706
in vxlan_ucast_sup
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
`ip_lib.vxlan_in_use(seg_id)):`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/neutron/agent/linux/ip_lib.py:741
in vxlan_in_use
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `interfaces =
get_devices_info(namespace)`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/neutron/agent/linux/ip_lib.py:1379
in get_devices_info
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `devices =
privileged.get_link_devices(namespace, **kwargs)`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/oslo_privsep/priv_context.py:247
in _wrap
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `return
self.channel.remote_call(name, args, kwargs)`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/oslo_privsep/daemon.py:214
in remote_call
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `result =
self.send_recv((Message.CALL.value, name, args, kwargs))`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/oslo_privsep/comm.py:172
in send_recv
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `reply =
future.result()`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/oslo_privsep/comm.py:109
in result
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
`self.condvar.wait()`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/usr/lib/python3.6/threading.py:295 in wait
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `waiter.acquire()`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/eventlet/semaphore.py:115
in acquire
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
`hubs.get_hub().switch()`
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]:
/openstack/venvs/neutron-21.2.6/lib/python3.6/site-packages/eventlet/hubs/hub.py:298
in switch
Dec 01 07:19:38 tctrko1 neutron-linuxbridge-agent[18892]: `return
self.greenlet.switch()`
In this case it looks like `privileged.get_link_devices` is what needs
to be optimized which was not covered by the fix.
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You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1896734
Title:
A privsep daemon spawned by neutron-openvswitch-agent hangs when debug
logging is enabled (large number of registered NICs) - an RPC response
is too large for msgpack
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