Public bug reported:

I have 3 controllers and each controllers are running neutron-server.
When I delete router_gateway, some of the controllers occasionally crash
with DBDeadlock exceptions:

69597:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager 
[req-31af8910-b348-49c4-9082-8647f1ef94ca 0c806b3af06b4025ad180a6d6213d02c 
9d120e49c3e2484b827597bdde57f850 - default default] Error during notification 
for 
neutron.services.l3_router.l3_router_plugin.L3RouterPlugin._delete_dvr_internal_ports--9223372036852560901
 router_gateway, after_delete: DBDeadlock: (pymysql.err.InternalError) (1213, 
u'Deadlock found when trying to get lock; try restarting transaction') [SQL: 
u'DELETE FROM portsecuritybindings WHERE portsecuritybindings.port_id = 
%(port_id)s'] [parameters: {'port_id': u'f7dea1fa-5436-4a43-b0ec-0bef99371375'}]
69598:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager 
Traceback (most recent call last):
69599:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron_lib/callbacks/manager.py", line 171, 
in _notify_loop
69600:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
callback(resource, event, trigger, **kwargs)
69601:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py", line 272, in 
_delete_dvr_internal_ports
69602:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context.elevated(), None, network_id)
69603:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py", line 288, in 
delete_floatingip_agent_gateway_port
69604:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._core_plugin.ipam.delete_port(context, p['id'])
69605:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/ipam_pluggable_backend.py", line 
429, in delete_port
69606:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
port['fixed_ips'])
69607:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/ipam_pluggable_backend.py", line 
95, in _ipam_deallocate_ips
69608:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
"external system for %s", addresses)
69609:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
69610:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self.force_reraise()
69611:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in 
force_reraise
69612:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
six.reraise(self.type_, self.value, self.tb)
69613:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/ipam_pluggable_backend.py", line 
71, in _ipam_deallocate_ips
69614:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
ipam_subnet = ipam_driver.get_subnet(ip['subnet_id'])
69615:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/ipam/drivers/neutrondb_ipam/driver.py",
 line 267, in get_subnet
69616:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
return NeutronDbSubnet.load(subnet_id, self._context)
69617:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/ipam/drivers/neutrondb_ipam/driver.py",
 line 91, in load
69618:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     ctx, 
neutron_subnet_id)
69619:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/ipam/drivers/neutrondb_ipam/db_api.py",
 line 30, in load_by_neutron_subnet_id
69620:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context, neutron_subnet_id=neutron_subnet_id)
69621:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/objects/base.py", line 463, in 
get_objects
69622:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     with 
context.session.begin(subtransactions=True):
69623:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 824, in 
begin
69624:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self, nested=nested)
69625:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 218, in 
__init__
69626:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._take_snapshot()
69627:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 327, in 
_take_snapshot
69628:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self.session.flush()
69629:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2171, in 
flush
69630:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._flush(objects)
69631:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2291, in 
_flush
69632:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
transaction.rollback(_capture_exception=True)
69633:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line 66, 
in __exit__
69634:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
compat.reraise(exc_type, exc_value, exc_tb)
69635:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2255, in 
_flush
69636:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
flush_context.execute()
69637:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line 389, in 
execute
69638:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
rec.execute(self)
69639:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line 577, in 
execute
69640:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     uow
69641:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line 258, 
in delete_obj
69642:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
cached_connections, mapper, table, delete)
69643:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line 931, 
in _emit_delete_statements
69644:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     c = 
connection.execute(statement, del_objects)
69645:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 945, in 
execute
69646:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
return meth(self, multiparams, params)
69647:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/sql/elements.py", line 263, in 
_execute_on_connection
69648:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
return connection._execute_clauseelement(self, multiparams, params)
69649:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1053, in 
_execute_clauseelement
69650:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
compiled_sql, distilled_params
69651:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1189, in 
_execute_context
69652:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context)
69653:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1398, in 
_handle_dbapi_exception
69654:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
util.raise_from_cause(newraise, exc_info)
69655:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/util/compat.py", line 203, in 
raise_from_cause
69656:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
reraise(type(exception), exception, tb=exc_tb, cause=cause)
69657:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1182, in 
_execute_context
69658:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context)
69659:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/default.py", line 470, in 
do_execute
69660:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
cursor.execute(statement, parameters)
69661:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/cursors.py", line 166, in execute
69662:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
result = self._query(query)
69663:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/cursors.py", line 322, in _query
69664:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
conn.query(q)
69665:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 856, in query
69666:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
69667:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 1057, in 
_read_query_result
69668:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
result.read()
69669:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 1340, in read
69670:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
first_packet = self.connection._read_packet()
69671:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 1014, in 
_read_packet
69672:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
packet.check_error()
69673:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 393, in 
check_error
69674:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
err.raise_mysql_exception(self._data)
69675:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/err.py", line 107, in 
raise_mysql_exception
69676:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
raise errorclass(errno, errval)
69677:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager 
DBDeadlock: (pymysql.err.InternalError) (1213, u'Deadlock found when trying to 
get lock; try restarting transaction') [SQL: u'DELETE FROM portsecuritybindings 
WHERE portsecuritybindings.port_id = %(port_id)s'] [parameters: {'port_id': 
u'f7dea1fa-5436-4a43-b0ec-0bef99371375'}]
69678:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: neutron

** Tags added: neutron

** Summary changed:

- DBDeadlock
+ DBDeadlock occurs when delete router_gateway

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1718369

Title:
  DBDeadlock occurs when delete router_gateway

Status in neutron:
  New

Bug description:
  I have 3 controllers and each controllers are running neutron-server.
  When I delete router_gateway, some of the controllers occasionally
  crash with DBDeadlock exceptions:

  69597:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager 
[req-31af8910-b348-49c4-9082-8647f1ef94ca 0c806b3af06b4025ad180a6d6213d02c 
9d120e49c3e2484b827597bdde57f850 - default default] Error during notification 
for 
neutron.services.l3_router.l3_router_plugin.L3RouterPlugin._delete_dvr_internal_ports--9223372036852560901
 router_gateway, after_delete: DBDeadlock: (pymysql.err.InternalError) (1213, 
u'Deadlock found when trying to get lock; try restarting transaction') [SQL: 
u'DELETE FROM portsecuritybindings WHERE portsecuritybindings.port_id = 
%(port_id)s'] [parameters: {'port_id': u'f7dea1fa-5436-4a43-b0ec-0bef99371375'}]
  69598:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager 
Traceback (most recent call last):
  69599:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron_lib/callbacks/manager.py", line 171, 
in _notify_loop
  69600:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
callback(resource, event, trigger, **kwargs)
  69601:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py", line 272, in 
_delete_dvr_internal_ports
  69602:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context.elevated(), None, network_id)
  69603:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py", line 288, in 
delete_floatingip_agent_gateway_port
  69604:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._core_plugin.ipam.delete_port(context, p['id'])
  69605:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/ipam_pluggable_backend.py", line 
429, in delete_port
  69606:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
port['fixed_ips'])
  69607:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/ipam_pluggable_backend.py", line 
95, in _ipam_deallocate_ips
  69608:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
"external system for %s", addresses)
  69609:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  69610:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self.force_reraise()
  69611:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in 
force_reraise
  69612:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
six.reraise(self.type_, self.value, self.tb)
  69613:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/db/ipam_pluggable_backend.py", line 
71, in _ipam_deallocate_ips
  69614:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
ipam_subnet = ipam_driver.get_subnet(ip['subnet_id'])
  69615:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/ipam/drivers/neutrondb_ipam/driver.py",
 line 267, in get_subnet
  69616:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
return NeutronDbSubnet.load(subnet_id, self._context)
  69617:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/ipam/drivers/neutrondb_ipam/driver.py",
 line 91, in load
  69618:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
ctx, neutron_subnet_id)
  69619:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/ipam/drivers/neutrondb_ipam/db_api.py",
 line 30, in load_by_neutron_subnet_id
  69620:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context, neutron_subnet_id=neutron_subnet_id)
  69621:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/neutron/objects/base.py", line 463, in 
get_objects
  69622:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
with context.session.begin(subtransactions=True):
  69623:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 824, in 
begin
  69624:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self, nested=nested)
  69625:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 218, in 
__init__
  69626:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._take_snapshot()
  69627:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 327, in 
_take_snapshot
  69628:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self.session.flush()
  69629:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2171, in 
flush
  69630:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._flush(objects)
  69631:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2291, in 
_flush
  69632:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
transaction.rollback(_capture_exception=True)
  69633:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line 66, 
in __exit__
  69634:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
compat.reraise(exc_type, exc_value, exc_tb)
  69635:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2255, in 
_flush
  69636:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
flush_context.execute()
  69637:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line 389, in 
execute
  69638:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
rec.execute(self)
  69639:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line 577, in 
execute
  69640:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     uow
  69641:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line 258, 
in delete_obj
  69642:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
cached_connections, mapper, table, delete)
  69643:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line 931, 
in _emit_delete_statements
  69644:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     c 
= connection.execute(statement, del_objects)
  69645:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 945, in 
execute
  69646:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
return meth(self, multiparams, params)
  69647:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/sql/elements.py", line 263, in 
_execute_on_connection
  69648:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
return connection._execute_clauseelement(self, multiparams, params)
  69649:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1053, in 
_execute_clauseelement
  69650:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
compiled_sql, distilled_params
  69651:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1189, in 
_execute_context
  69652:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context)
  69653:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1398, in 
_handle_dbapi_exception
  69654:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
util.raise_from_cause(newraise, exc_info)
  69655:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/util/compat.py", line 203, in 
raise_from_cause
  69656:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
reraise(type(exception), exception, tb=exc_tb, cause=cause)
  69657:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1182, in 
_execute_context
  69658:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
context)
  69659:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib64/python2.7/site-packages/sqlalchemy/engine/default.py", line 470, in 
do_execute
  69660:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
cursor.execute(statement, parameters)
  69661:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/cursors.py", line 166, in execute
  69662:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
result = self._query(query)
  69663:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/cursors.py", line 322, in _query
  69664:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
conn.query(q)
  69665:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 856, in query
  69666:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  69667:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 1057, in 
_read_query_result
  69668:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
result.read()
  69669:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 1340, in read
  69670:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
first_packet = self.connection._read_packet()
  69671:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 1014, in 
_read_packet
  69672:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
packet.check_error()
  69673:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/connections.py", line 393, in 
check_error
  69674:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
err.raise_mysql_exception(self._data)
  69675:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager   File 
"/usr/lib/python2.7/site-packages/pymysql/err.py", line 107, in 
raise_mysql_exception
  69676:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager     
raise errorclass(errno, errval)
  69677:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager 
DBDeadlock: (pymysql.err.InternalError) (1213, u'Deadlock found when trying to 
get lock; try restarting transaction') [SQL: u'DELETE FROM portsecuritybindings 
WHERE portsecuritybindings.port_id = %(port_id)s'] [parameters: {'port_id': 
u'f7dea1fa-5436-4a43-b0ec-0bef99371375'}]
  69678:2017-09-20 10:58:10.606 2114 ERROR neutron_lib.callbacks.manager

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