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[Alan Pevec <1332917@xxxxxxxxxxxxxxxxxx>]

** Changed in: neutron/juno
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1332917

Title:
  Deadlock when deleting from ipavailabilityranges

Status in neutron:
  Fix Released
Status in neutron juno series:
  Fix Released

Bug description:
  Traceback:
   TRACE neutron.api.v2.resource Traceback (most recent call last):
   TRACE neutron.api.v2.resource   File "/opt/stack/new/neutron/neutron/api/v2/resource.py", line 87, in resource
   TRACE neutron.api.v2.resource     result = method(request=request, **args)
   TRACE neutron.api.v2.resource   File "/opt/stack/new/neutron/neutron/api/v2/base.py", line 477, in delete
   TRACE neutron.api.v2.resource     obj_deleter(request.context, id, **kwargs)
   TRACE neutron.api.v2.resource   File "/opt/stack/new/neutron/neutron/plugins/ml2/plugin.py", line 608, in delete_subnet
   TRACE neutron.api.v2.resource     break
   TRACE neutron.api.v2.resource   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 463, in __exit__
   TRACE neutron.api.v2.resource     self.rollback()
   TRACE neutron.api.v2.resource   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line 57, in __exit__
   TRACE neutron.api.v2.resource     compat.reraise(exc_type, exc_value, exc_tb)
   TRACE neutron.api.v2.resource   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 460, in __exit__
   TRACE neutron.api.v2.resource     self.commit()
   TRACE neutron.api.v2.resource   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 370, in commit
   TRACE neutron.api.v2.resource     self._prepare_impl()
   TRACE neutron.api.v2.resource   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 350, in _prepare_impl
   TRACE neutron.api.v2.resource     self.session.flush()
   TRACE neutron.api.v2.resource   File "/opt/stack/new/neutron/neutron/openstack/common/db/sqlalchemy/session.py", line 444, in _wrap
   TRACE neutron.api.v2.resource     _raise_if_deadlock_error(e, self.bind.dialect.name)
   TRACE neutron.api.v2.resource   File "/opt/stack/new/neutron/neutron/openstack/common/db/sqlalchemy/session.py", line 427, in _raise_if_deadlock_error
   TRACE neutron.api.v2.resource     raise exception.DBDeadlock(operational_error)
   TRACE neutron.api.v2.resource DBDeadlock: (OperationalError) (1213, 'Deadlock found when trying to get lock; try restarting transaction') 'DELETE FROM ipavailabilityranges WHERE ipavailabilityranges.allocation_pool_id = %s AND ipavailabilityranges.first_ip = %s AND ipavailabilityranges.last_ip = %s' ('b19b08b6-90f2-43d6-bfe1-9cbe6e0e1d93', '10.100.0.2', '10.100.0.14')

  http://logs.openstack.org/21/76021/12/check/check-tempest-dsvm-
  neutron-
  full/7577c27/logs/screen-q-svc.txt.gz?level=TRACE#_2014-06-21_18_39_47_122

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