Public bug reported:

If the port binding is being changed while Neutron keeps changing the
port binding because ovn controller starts claiming the port bindings
then the db sync script may fail:

2022-02-12 18:23:02.332 47 CRITICAL neutron_ovn_db_sync_util 
[req-d5fae5a9-4fc8-4d2d-94fd-988625c45b09 - - - - -] Unhandled error: 
oslo_db.exception.DBDeadlock: (pymysql.err.InternalError) (1213, 'Deadlock 
found when trying to get lock; try restarting transaction')
[SQL: UPDATE standardattributes SET 
revision_number=(standardattributes.revision_number + %(revision_number_1)s), 
updated_at=%(updated_at)s WHERE standardattributes.id IN (%(id_1)s)]
[parameters: {'revision_number_1': 1, 'updated_at': datetime.datetime(2022, 2, 
12, 18, 23, 2), 'id_1': 356}]
(Background on this error at: http://sqlalche.me/e/2j85)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util Traceback (most 
recent call last):
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1244, in 
_execute_context
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     cursor, 
statement, parameters, context
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 552, in 
do_execute
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
cursor.execute(statement, parameters)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 165, in execute
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result = 
self._query(query)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 321, in _query
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     conn.query(q)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 860, in query
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1061, in 
_read_query_result
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result.read()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1349, in read
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     first_packet = 
self.connection._read_packet()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1018, in 
_read_packet
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
packet.check_error()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 384, in 
check_error
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
err.raise_mysql_exception(self._data)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/err.py", line 107, in 
raise_mysql_exception
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise 
errorclass(errno, errval)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
pymysql.err.InternalError: (1213, 'Deadlock found when trying to get lock; try 
restarting transaction')
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util The above exception 
was the direct cause of the following exception:
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util Traceback (most 
recent call last):
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/bin/neutron-ovn-db-sync-util", line 10, in <module>
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     sys.exit(main())
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/networking_ovn/cmd/neutron_ovn_db_sync_util.py",
 line 233, in main
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
db_migration.migrate_neutron_database_to_ovn(core_plugin)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/networking_ovn/ml2/db_migration.py", line 93, 
in migrate_neutron_database_to_ovn
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     pb.update()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/objects/base.py", line 337, in 
decorator
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return func(self, 
*args, **kwargs)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/objects/base.py", line 906, in update
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._get_composite_keys()))
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/objects/db/api.py", line 88, in 
update_object
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
db_obj.save(session=context.session)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/models.py", line 50, in 
save
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     session.flush()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/session.py", line 2451, in 
flush
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._flush(objects)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/session.py", line 2589, in 
_flush
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
transaction.rollback(_capture_exception=True)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, 
in __exit__
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
compat.reraise(exc_type, exc_value, exc_tb)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 129, in 
reraise
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise value
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/session.py", line 2583, in 
_flush
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self.dispatch.after_flush_postexec(self, flush_context)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/event/attr.py", line 259, in 
__call__
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     fn(*args, **kw)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/services/revisions/revision_plugin.py",
 line 85, in _emit_related_revision_bumps
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     session, 
collected, version_check=False)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/services/revisions/revision_plugin.py",
 line 189, in _bump_obj_revisions
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
synchronize_session=False)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/query.py", line 3818, in 
update
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     update_op.exec_()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1671, 
in exec_
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     self._do_exec()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1864, 
in _do_exec
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._execute_stmt(update_stmt)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1676, 
in _execute_stmt
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     self.result = 
self.query._execute_crud(stmt, self.mapper)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/query.py", line 3350, in 
_execute_crud
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return 
conn.execute(stmt, self._params)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 988, in 
execute
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return meth(self, 
multiparams, params)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/sql/elements.py", line 287, in 
_execute_on_connection
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return 
connection._execute_clauseelement(self, multiparams, params)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1107, in 
_execute_clauseelement
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     distilled_params,
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1248, in 
_execute_context
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     e, statement, 
parameters, cursor, context
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1464, in 
_handle_dbapi_exception
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
util.raise_from_cause(newraise, exc_info)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 383, in 
raise_from_cause
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
reraise(type(exception), exception, tb=exc_tb, cause=cause)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 128, in 
reraise
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise 
value.with_traceback(tb)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1244, in 
_execute_context
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     cursor, 
statement, parameters, context
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 552, in 
do_execute
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
cursor.execute(statement, parameters)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 165, in execute
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result = 
self._query(query)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 321, in _query
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     conn.query(q)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 860, in query
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1061, in 
_read_query_result
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result.read()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1349, in read
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     first_packet = 
self.connection._read_packet()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1018, in 
_read_packet
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
packet.check_error()
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 384, in 
check_error
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
err.raise_mysql_exception(self._data)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/err.py", line 107, in 
raise_mysql_exception
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise 
errorclass(errno, errval)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
oslo_db.exception.DBDeadlock: (pymysql.err.InternalError) (1213, 'Deadlock 
found when trying to get lock; try restarting transaction')
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util [SQL: UPDATE 
standardattributes SET revision_number=(standardattributes.revision_number + 
%(revision_number_1)s), updated_at=%(updated_at)s WHERE standardattributes.id 
IN (%(id_1)s)]
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util [parameters: 
{'revision_number_1': 1, 'updated_at': datetime.datetime(2022, 2, 12, 18, 23, 
2), 'id_1': 356}]
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util (Background on this 
error at: http://sqlalche.me/e/2j85)
2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util

** Affects: neutron
     Importance: Undecided
     Assignee: Jakub Libosvar (libosvar)
         Status: In Progress


** Tags: ovn

-- 
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Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1964640

Title:
  db-sync script port binding deadlock when migrating to OVN

Status in neutron:
  In Progress

Bug description:
  If the port binding is being changed while Neutron keeps changing the
  port binding because ovn controller starts claiming the port bindings
  then the db sync script may fail:

  2022-02-12 18:23:02.332 47 CRITICAL neutron_ovn_db_sync_util 
[req-d5fae5a9-4fc8-4d2d-94fd-988625c45b09 - - - - -] Unhandled error: 
oslo_db.exception.DBDeadlock: (pymysql.err.InternalError) (1213, 'Deadlock 
found when trying to get lock; try restarting transaction')
  [SQL: UPDATE standardattributes SET 
revision_number=(standardattributes.revision_number + %(revision_number_1)s), 
updated_at=%(updated_at)s WHERE standardattributes.id IN (%(id_1)s)]
  [parameters: {'revision_number_1': 1, 'updated_at': datetime.datetime(2022, 
2, 12, 18, 23, 2), 'id_1': 356}]
  (Background on this error at: http://sqlalche.me/e/2j85)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util Traceback (most 
recent call last):
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1244, in 
_execute_context
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     cursor, 
statement, parameters, context
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 552, in 
do_execute
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
cursor.execute(statement, parameters)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 165, in execute
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result = 
self._query(query)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 321, in _query
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     conn.query(q)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 860, in query
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1061, in 
_read_query_result
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result.read()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1349, in read
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     first_packet = 
self.connection._read_packet()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1018, in 
_read_packet
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
packet.check_error()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 384, in 
check_error
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
err.raise_mysql_exception(self._data)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/err.py", line 107, in 
raise_mysql_exception
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise 
errorclass(errno, errval)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
pymysql.err.InternalError: (1213, 'Deadlock found when trying to get lock; try 
restarting transaction')
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util The above exception 
was the direct cause of the following exception:
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util Traceback (most 
recent call last):
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/bin/neutron-ovn-db-sync-util", line 10, in <module>
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     sys.exit(main())
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/networking_ovn/cmd/neutron_ovn_db_sync_util.py",
 line 233, in main
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
db_migration.migrate_neutron_database_to_ovn(core_plugin)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/networking_ovn/ml2/db_migration.py", line 93, 
in migrate_neutron_database_to_ovn
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     pb.update()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/objects/base.py", line 337, in 
decorator
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return 
func(self, *args, **kwargs)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/objects/base.py", line 906, in update
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._get_composite_keys()))
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/objects/db/api.py", line 88, in 
update_object
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
db_obj.save(session=context.session)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/models.py", line 50, in 
save
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     session.flush()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/session.py", line 2451, in 
flush
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._flush(objects)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/session.py", line 2589, in 
_flush
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
transaction.rollback(_capture_exception=True)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, 
in __exit__
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
compat.reraise(exc_type, exc_value, exc_tb)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 129, in 
reraise
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise value
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/session.py", line 2583, in 
_flush
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self.dispatch.after_flush_postexec(self, flush_context)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/event/attr.py", line 259, in 
__call__
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     fn(*args, **kw)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/services/revisions/revision_plugin.py",
 line 85, in _emit_related_revision_bumps
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     session, 
collected, version_check=False)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/neutron/services/revisions/revision_plugin.py",
 line 189, in _bump_obj_revisions
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
synchronize_session=False)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/query.py", line 3818, in 
update
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
update_op.exec_()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1671, 
in exec_
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     self._do_exec()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1864, 
in _do_exec
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._execute_stmt(update_stmt)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1676, 
in _execute_stmt
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     self.result = 
self.query._execute_crud(stmt, self.mapper)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/orm/query.py", line 3350, in 
_execute_crud
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return 
conn.execute(stmt, self._params)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 988, in 
execute
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return 
meth(self, multiparams, params)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/sql/elements.py", line 287, in 
_execute_on_connection
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     return 
connection._execute_clauseelement(self, multiparams, params)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1107, in 
_execute_clauseelement
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
distilled_params,
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1248, in 
_execute_context
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     e, statement, 
parameters, cursor, context
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1464, in 
_handle_dbapi_exception
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
util.raise_from_cause(newraise, exc_info)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 383, in 
raise_from_cause
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
reraise(type(exception), exception, tb=exc_tb, cause=cause)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 128, in 
reraise
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise 
value.with_traceback(tb)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1244, in 
_execute_context
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     cursor, 
statement, parameters, context
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 552, in 
do_execute
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
cursor.execute(statement, parameters)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 165, in execute
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result = 
self._query(query)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/cursors.py", line 321, in _query
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     conn.query(q)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 860, in query
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1061, in 
_read_query_result
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     result.read()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1349, in read
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     first_packet = 
self.connection._read_packet()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1018, in 
_read_packet
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
packet.check_error()
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/connections.py", line 384, in 
check_error
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     
err.raise_mysql_exception(self._data)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util   File 
"/usr/lib/python3.6/site-packages/pymysql/err.py", line 107, in 
raise_mysql_exception
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util     raise 
errorclass(errno, errval)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util 
oslo_db.exception.DBDeadlock: (pymysql.err.InternalError) (1213, 'Deadlock 
found when trying to get lock; try restarting transaction')
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util [SQL: UPDATE 
standardattributes SET revision_number=(standardattributes.revision_number + 
%(revision_number_1)s), updated_at=%(updated_at)s WHERE standardattributes.id 
IN (%(id_1)s)]
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util [parameters: 
{'revision_number_1': 1, 'updated_at': datetime.datetime(2022, 2, 12, 18, 23, 
2), 'id_1': 356}]
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util (Background on this 
error at: http://sqlalche.me/e/2j85)
  2022-02-12 18:23:02.332 47 ERROR neutron_ovn_db_sync_util

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