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[YAMAMOTO Takashi <yamamoto@xxxxxxxxxxxx>]

Public bug reported:

for some reason, vpn agent's event consumer thread stuck after producing the following line,
holding the 'vpn-agent' lock.  further updates can't be processed because of the lock.

http://logs.openstack.org/01/419801/3/experimental/gate-neutron-dsvm-
tempest-vpnaas-ubuntu-xenial/43c55dc/

2017-02-01 04:40:34.655 3790 DEBUG neutron.agent.linux.utils [req-
8be2bfb5-2bf2-4b40-9121-cfa80e47ccac - tempest-Vpnaas-130233446] Running
command (rootwrap daemon): ['ip', 'netns', 'exec', 'qrouter-
1cb07028-b795-43c6-beb0-c1ebf9e76056', 'neutron-vpn-netns-wrapper', '--
mount_paths=/etc:/opt/stack/data/neutron/ipsec/1cb07028-b795-43c6-beb0-c1ebf9e76056/etc,/var/run:/opt/stack/data/neutron/ipsec/1cb07028-b795-43c6-beb0-c1ebf9e76056/var/run',
'--cmd=ipsec,up,3227d225-92ae-4e9f-b524-85eecead6fef']
execute_rootwrap_daemon
/opt/stack/new/neutron/neutron/agent/linux/utils.py:113

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: vpnaas

** Tags added: vpnaas

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https://bugs.launchpad.net/bugs/1660899

Title:
  vpn agent stuck during sync

Status in neutron:
  New

Bug description:
  for some reason, vpn agent's event consumer thread stuck after producing the following line,
  holding the 'vpn-agent' lock.  further updates can't be processed because of the lock.

  http://logs.openstack.org/01/419801/3/experimental/gate-neutron-dsvm-
  tempest-vpnaas-ubuntu-xenial/43c55dc/

  2017-02-01 04:40:34.655 3790 DEBUG neutron.agent.linux.utils [req-
  8be2bfb5-2bf2-4b40-9121-cfa80e47ccac - tempest-Vpnaas-130233446]
  Running command (rootwrap daemon): ['ip', 'netns', 'exec', 'qrouter-
  1cb07028-b795-43c6-beb0-c1ebf9e76056', 'neutron-vpn-netns-wrapper', '
  --
  mount_paths=/etc:/opt/stack/data/neutron/ipsec/1cb07028-b795-43c6-beb0-c1ebf9e76056/etc,/var/run:/opt/stack/data/neutron/ipsec/1cb07028-b795-43c6-beb0-c1ebf9e76056/var/run',
  '--cmd=ipsec,up,3227d225-92ae-4e9f-b524-85eecead6fef']
  execute_rootwrap_daemon
  /opt/stack/new/neutron/neutron/agent/linux/utils.py:113

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