+ exec cinder-scheduler --config-file /etc/cinder/cinder.conf
simplejson unavailable, fall-back to standard python json
2026-05-21 05:16:19.863 1 INFO cinder.rpc [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Automatically selected cinder-volume objects version 1.39 as minimum service version.
2026-05-21 05:16:19.868 1 INFO cinder.rpc [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Automatically selected cinder-volume RPC version 3.18 as minimum service version.
2026-05-21 05:16:19.883 1 INFO cinder.rpc [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Automatically selected cinder-backup objects version 1.39 as minimum service version.
2026-05-21 05:16:19.887 1 INFO cinder.rpc [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Automatically selected cinder-backup RPC version 2.4 as minimum service version.
2026-05-21 05:16:19.890 1 INFO cinder.rpc [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Automatically selected cinder-scheduler objects version 1.39 as minimum service version.
2026-05-21 05:16:19.892 1 INFO cinder.rpc [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Automatically selected cinder-scheduler RPC version 3.12 as minimum service version.
2026-05-21 05:16:19.922 1 WARNING oslo_config.cfg [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Deprecated: Option "auth_uri" from group "keystone_authtoken" is deprecated for removal (The auth_uri option is deprecated in favor of www_authenticate_uri and will be removed in the S  release.).  Its value may be silently ignored in the future.
2026-05-21 05:16:19.923 1 WARNING oslo_config.cfg [None req-16000eec-9e1b-44bc-8aed-88199b51e564 - - - - - -] Deprecated: Option "auth_uri" from group "keystone_authtoken" is deprecated. Use option "www_authenticate_uri" from group "keystone_authtoken".
2026-05-21 05:16:19.934 1 INFO cinder.service [-] Starting cinder-scheduler node (version 23.5.0)
2026-05-21 05:16:19.934 1 INFO cinder.manager [None req-ec26f444-be11-42e8-93e7-5fe4aeb0bbb3 - - - - - -] Initiating service 1 cleanup
2026-05-21 05:16:19.939 1 INFO cinder.manager [None req-ec26f444-be11-42e8-93e7-5fe4aeb0bbb3 - - - - - -] Service 1 cleanup completed.
2026-05-21 05:17:27.076 1 INFO cinder.message.api [None req-315e2bb3-2ab8-458e-95c6-292ad27ab154 - - - - - -] Deleted 0 expired messages.
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server [None req-88df852c-c447-4c96-960f-66f522b95a2b 14f1358bc9e343d3a49fb905c1b51cf4 b596d1aa324b428fa9b59886b28a5fe0 - - - -] Exception during message handling: oslo_db.exception.DBConnectionError: (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query')
(Background on this error at: https://sqlalche.me/e/14/e3q8)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server Traceback (most recent call last):
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3361, in _wrap_pool_connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return fn()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 320, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return _ConnectionFairy._checkout(self)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 884, in _checkout
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     fairy = _ConnectionRecord.checkout(pool)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 486, in checkout
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     rec = pool._do_get()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 145, in _do_get
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     with util.safe_reraise():
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     compat.raise_(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     raise exception
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 143, in _do_get
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self._create_connection()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 266, in _create_connection
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return _ConnectionRecord(self)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 381, in __init__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self.__connect()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 677, in __connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     with util.safe_reraise():
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     compat.raise_(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     raise exception
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 673, in __connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self.dbapi_connection = connection = pool._invoke_creator(self)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/create.py", line 578, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return dialect.connect(*cargs, **cparams)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 598, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self.dbapi.connect(*cargs, **cparams)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 352, in __init__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self.connect()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 635, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self._get_server_information()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 1056, in _get_server_information
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     packet = self._read_packet()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 696, in _read_packet
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     packet_header = self._read_bytes(4)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 752, in _read_bytes
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     raise err.OperationalError(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server pymysql.err.OperationalError: (2013, 'Lost connection to MySQL server during query')
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server 
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server The above exception was the direct cause of the following exception:
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server 
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server Traceback (most recent call last):
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     res = self.dispatcher.dispatch(message)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self._do_dispatch(endpoint, method, ctxt, args)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     result = func(ctxt, **new_args)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/scheduler/manager.py", line 438, in get_pools
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self.driver.get_pools(context, filters)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/scheduler/filter_scheduler.py", line 207, in get_pools
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self.host_manager.get_pools(context, filters)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/scheduler/host_manager.py", line 803, in get_pools
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self._update_backend_state_map(context)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/scheduler/host_manager.py", line 685, in _update_backend_state_map
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     volume_services = objects.ServiceList.get_all(context,
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/objects/service.py", line 224, in get_all
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     services = db.service_get_all(context, **(filters or {}))
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/db/api.py", line 289, in service_get_all
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return IMPL.service_get_all(context, backend_match_level, **filters)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/db/sqlalchemy/api.py", line 177, in wrapper
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return f(*args, **kwargs)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 1001, in wrapper
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return fn(*args, **kwargs)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/cinder/db/sqlalchemy/api.py", line 936, in service_get_all
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return [] if not query else query.all()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/orm/query.py", line 2772, in all
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self._iter().all()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/orm/query.py", line 2907, in _iter
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     result = self.session.execute(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 1711, in execute
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     conn = self._connection_for_bind(bind)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 1552, in _connection_for_bind
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self._transaction._connection_for_bind(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 747, in _connection_for_bind
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     conn = bind.connect()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3315, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self._connection_cls(self, close_with_result=close_with_result)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 96, in __init__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     else engine.raw_connection()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3394, in raw_connection
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self._wrap_pool_connect(self.pool.connect, _connection)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3364, in _wrap_pool_connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     Connection._handle_dbapi_exception_noconnection(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 2196, in _handle_dbapi_exception_noconnection
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     util.raise_(newraise, with_traceback=exc_info[2], from_=e)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     raise exception
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3361, in _wrap_pool_connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return fn()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 320, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return _ConnectionFairy._checkout(self)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 884, in _checkout
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     fairy = _ConnectionRecord.checkout(pool)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 486, in checkout
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     rec = pool._do_get()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 145, in _do_get
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     with util.safe_reraise():
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     compat.raise_(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     raise exception
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 143, in _do_get
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self._create_connection()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 266, in _create_connection
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return _ConnectionRecord(self)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 381, in __init__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self.__connect()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 677, in __connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     with util.safe_reraise():
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     compat.raise_(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     raise exception
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 673, in __connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self.dbapi_connection = connection = pool._invoke_creator(self)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/create.py", line 578, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return dialect.connect(*cargs, **cparams)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 598, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     return self.dbapi.connect(*cargs, **cparams)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 352, in __init__
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self.connect()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 635, in connect
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     self._get_server_information()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 1056, in _get_server_information
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     packet = self._read_packet()
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 696, in _read_packet
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     packet_header = self._read_bytes(4)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server   File "/var/lib/openstack/lib/python3.10/site-packages/pymysql/connections.py", line 752, in _read_bytes
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server     raise err.OperationalError(
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server oslo_db.exception.DBConnectionError: (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query')
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server (Background on this error at: https://sqlalche.me/e/14/e3q8)
2026-05-21 06:10:11.536 1 ERROR oslo_messaging.rpc.server 
2026-05-21 06:10:14.937 1 WARNING oslo.service.loopingcall [None req-b71d8726-7bd2-4791-9370-1c47e9c91e71 - - - - - -] Function 'cinder.service.Service.report_state' run outlasted interval by 33.99 sec