189 8069 5689
[ERROR] Native table 'performance_schema'.'session_status' has the wrong structure 表损坏测试
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[MySQL@roidb01 bin]$ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.19-log Source distribution
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| roidba |
| sys |
| test |
+--------------------+
6 rows in set (0.00 sec)
mysql> show variables like 'datadir';
+---------------+--------------+
| Variable_name | Value |
+---------------+--------------+
| datadir | /mysql/data/ |
+---------------+--------------+
1 row in set (0.00 sec)
[root@roidb01 performance_schema]# ls -l
total 1060
-rw-r----- 1 mysql mysql 8706 Jun 20 23:15 accounts.frm
-rw-r----- 1 mysql mysql 8624 Jun 20 23:15 cond_instances.frm
-rw-r----- 1 mysql mysql 61 Jun 20 23:15 db.opt
-rw-r----- 1 mysql mysql 9103 Jun 20 23:15 events_stages_current.frm
-rw-r----- 1 mysql mysql 9103 Jun 20 23:15 events_stages_history.frm
-rw-r----- 1 mysql mysql 9103 Jun 20 23:15 events_stages_history_long.frm
-rw-r----- 1 mysql mysql 8874 Jun 20 23:15 events_stages_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 20 23:15 events_stages_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 8854 Jun 20 23:15 events_stages_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 20 23:15 events_stages_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 8814 Jun 20 23:15 events_stages_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 10597 Jun 20 23:15 events_statements_current.frm
-rw-r----- 1 mysql mysql 10597 Jun 20 23:15 events_statements_history.frm
-rw-r----- 1 mysql mysql 10597 Jun 20 23:15 events_statements_history_long.frm
-rw-r----- 1 mysql mysql 10000 Jun 20 23:15 events_statements_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 10102 Jun 20 23:15 events_statements_summary_by_digest.frm
-rw-r----- 1 mysql mysql 9970 Jun 20 23:15 events_statements_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 10369 Jun 20 23:15 events_statements_summary_by_program.frm
-rw-r----- 1 mysql mysql 9980 Jun 20 23:15 events_statements_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 9970 Jun 20 23:15 events_statements_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 9940 Jun 20 23:15 events_statements_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 9800 Jun 20 23:15 events_transactions_current.frm
-rw-r----- 1 mysql mysql 9800 Jun 20 23:15 events_transactions_history.frm
-rw-r----- 1 mysql mysql 9800 Jun 20 23:15 events_transactions_history_long.frm
-rw-r----- 1 mysql mysql 9468 Jun 20 23:15 events_transactions_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 9438 Jun 20 23:15 events_transactions_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 9448 Jun 20 23:15 events_transactions_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 9438 Jun 20 23:15 events_transactions_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 9408 Jun 20 23:15 events_transactions_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 9401 Jun 20 23:15 events_waits_current.frm
-rw-r----- 1 mysql mysql 9401 Jun 20 23:15 events_waits_history.frm
-rw-r----- 1 mysql mysql 9401 Jun 20 23:15 events_waits_history_long.frm
-rw-r----- 1 mysql mysql 8874 Jun 20 23:15 events_waits_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 20 23:15 events_waits_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 8878 Jun 20 23:15 events_waits_summary_by_instance.frm
-rw-r----- 1 mysql mysql 8854 Jun 20 23:15 events_waits_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 20 23:15 events_waits_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 8814 Jun 20 23:15 events_waits_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 8654 Jun 20 23:15 file_instances.frm
-rw-r----- 1 mysql mysql 9740 Jun 20 23:15 file_summary_by_event_name.frm
-rw-r----- 1 mysql mysql 9844 Jun 20 23:15 file_summary_by_instance.frm
-rw-r----- 1 mysql mysql 8628 Jun 20 23:15 global_status.frm
-rw-r----- 1 mysql mysql 8628 Jun 20 23:15 global_variables.frm
-rw-r----- 1 mysql mysql 10483 Jun 20 23:15 host_cache.frm
-rw-r----- 1 mysql mysql 8676 Jun 20 23:15 hosts.frm
-rw-r----- 1 mysql mysql 9240 Jun 20 23:15 memory_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 9210 Jun 20 23:15 memory_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 9220 Jun 20 23:15 memory_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 9210 Jun 20 23:15 memory_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 9180 Jun 20 23:15 memory_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 8998 Jun 20 23:15 metadata_locks.frm
-rw-r----- 1 mysql mysql 8684 Jun 20 23:15 mutex_instances.frm
-rw-r----- 1 mysql mysql 8908 Jun 20 23:15 objects_summary_global_by_type.frm
-rw-r----- 1 mysql mysql 8776 Jun 20 23:15 performance_timers.frm
-rw-r----- 1 mysql mysql 10541 Jun 20 23:15 prepared_statements_instances.frm
-rw-r----- 1 mysql mysql 8624 Jun 20 23:15 replication_applier_configuration.frm
-rw-r----- 1 mysql mysql 8849 Jun 20 23:15 replication_applier_status_by_coordinator.frm
-rw-r----- 1 mysql mysql 8953 Jun 20 23:15 replication_applier_status_by_worker.frm
-rw-r----- 1 mysql mysql 8759 Jun 20 23:15 replication_applier_status.frm
-rw-r----- 1 mysql mysql 17724 Jun 20 23:15 replication_connection_configuration.frm
-rw-r----- 1 mysql mysql 9215 Jun 20 23:15 replication_connection_status.frm
-rw-r----- 1 mysql mysql 8750 Jun 20 23:15 replication_group_members.frm
-rw-r----- 1 mysql mysql 9134 Jun 20 23:15 replication_group_member_stats.frm
-rw-r----- 1 mysql mysql 8758 Jun 20 23:15 rwlock_instances.frm
-rw-r----- 1 mysql mysql 8716 Jun 20 23:15 session_account_connect_attrs.frm
-rw-r----- 1 mysql mysql 8716 Jun 20 23:15 session_connect_attrs.frm
-rw-r----- 1 mysql mysql 8628 Jun 20 23:15 session_status.frm
-rw-r----- 1 mysql mysql 8628 Jun 20 23:15 session_variables.frm
-rw-r----- 1 mysql mysql 8701 Jun 20 23:15 setup_actors.frm
-rw-r----- 1 mysql mysql 8605 Jun 20 23:15 setup_consumers.frm
-rw-r----- 1 mysql mysql 8637 Jun 20 23:15 setup_instruments.frm
-rw-r----- 1 mysql mysql 8784 Jun 20 23:15 setup_objects.frm
-rw-r----- 1 mysql mysql 8650 Jun 20 23:15 setup_timers.frm
-rw-r----- 1 mysql mysql 8818 Jun 20 23:15 socket_instances.frm
-rw-r----- 1 mysql mysql 9740 Jun 20 23:15 socket_summary_by_event_name.frm
-rw-r----- 1 mysql mysql 9804 Jun 20 23:15 socket_summary_by_instance.frm
-rw-r----- 1 mysql mysql 8688 Jun 20 23:15 status_by_account.frm
-rw-r----- 1 mysql mysql 8658 Jun 20 23:15 status_by_host.frm
-rw-r----- 1 mysql mysql 8668 Jun 20 23:15 status_by_thread.frm
-rw-r----- 1 mysql mysql 8658 Jun 20 23:15 status_by_user.frm
-rw-r----- 1 mysql mysql 8928 Jun 20 23:15 table_handles.frm
-rw-r----- 1 mysql mysql 10578 Jun 20 23:15 table_io_waits_summary_by_index_usage.frm
-rw-r----- 1 mysql mysql 10488 Jun 20 23:15 table_io_waits_summary_by_table.frm
-rw-r----- 1 mysql mysql 13186 Jun 20 23:15 table_lock_waits_summary_by_table.frm
-rw-r----- 1 mysql mysql 9335 Jun 20 23:15 threads.frm
-rw-r----- 1 mysql mysql 8676 Jun 20 23:15 users.frm
-rw-r----- 1 mysql mysql 8668 Jun 20 23:15 user_variables_by_thread.frm
-rw-r----- 1 mysql mysql 8668 Jun 20 23:15 variables_by_thread.frm
mysql> drop database performance_schema;
Query OK, 87 rows affected (0.00 sec)
mysql>
[root@roidb01 performance_schema]# ls -l
total 0
[root@roidb01 performance_schema]#
mysql> shutdown
-> ;
Query OK, 0 rows affected (0.00 sec)
mysql> 2018-06-21T09:29:56.390196Z mysqld_safe mysqld from pid file /mysql/data/mysql.pid ended
mysql> exit
Bye
[1]+ Done mysqld_safe --defaults-file=/etc/my.cnf (wd: ~)
(wd now: /usr/local/mysql/bin)
[mysql@roidb01 bin]$
[mysql@roidb01 bin]$ mysqld_safe --defaults-file=/etc/my.cnf &
[1] 2718
[mysql@roidb01 bin]$ 2018-06-21T09:30:35.589561Z mysqld_safe Logging to '/mysql/log/mysql-error.log'.
2018-06-21T09:30:35.624370Z mysqld_safe Starting mysqld daemon with databases from /mysql/data
[root@roidb01 performance_schema]# tail -f /mysql/log/mysql-error.log
2018-06-21T09:30:35.935739Z 0 [ERROR] Native table 'performance_schema'.'session_status' has the wrong structure
2018-06-21T09:30:35.935759Z 0 [ERROR] Native table 'performance_schema'.'variables_by_thread' has the wrong structure
2018-06-21T09:30:35.935780Z 0 [ERROR] Native table 'performance_schema'.'global_variables' has the wrong structure
2018-06-21T09:30:35.935800Z 0 [ERROR] Native table 'performance_schema'.'session_variables' has the wrong structure
2018-06-21T09:30:35.937184Z 0 [Note] Event Scheduler: Loaded 0 events
2018-06-21T09:30:35.937360Z 0 [Note] /usr/local/mysql/bin/mysqld: ready for connections.
Version: '5.7.19-log' socket: '/tmp/mysql.sock' port: 3306 Source distribution
2018-06-21T09:30:35.937373Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check.
2018-06-21T09:30:35.937379Z 0 [Note] Beginning of list of non-natively partitioned tables
2018-06-21T09:30:35.949538Z 0 [Note] End of list of non-natively partitioned tables
[mysql@roidb01 bin]$ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.19-log Source distribution
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| roidba |
| sys |
| test |
+--------------------+
5 rows in set (0.00 sec)
mysql>
[mysql@roidb01 bin]$ which mysql_upgrade
/usr/local/mysql/bin/mysql_upgrade
[mysql@roidb01 bin]$ /usr/local/mysql/bin/mysql_upgrade -uroot -p
Enter password:
Checking if update is needed.
This installation of MySQL is already upgraded to 5.7.19, use --force if you still need to run mysql_upgrade
[mysql@roidb01 bin]$ /usr/local/mysql/bin/mysql_upgrade -uroot -p --force
Enter password:
Checking server version.
Running queries to upgrade MySQL server.
Checking system database.
mysql.columns_priv OK
mysql.db OK
mysql.engine_cost OK
mysql.event OK
mysql.func OK
mysql.general_log OK
mysql.gtid_executed OK
mysql.help_category OK
mysql.help_keyword OK
mysql.help_relation OK
mysql.help_topic OK
mysql.innodb_index_stats OK
mysql.innodb_table_stats OK
mysql.ndb_binlog_index OK
mysql.plugin OK
mysql.proc OK
mysql.procs_priv OK
mysql.proxies_priv OK
mysql.server_cost OK
mysql.servers OK
mysql.slave_master_info OK
mysql.slave_relay_log_info OK
mysql.slave_worker_info OK
mysql.slow_log OK
mysql.tables_priv OK
mysql.time_zone OK
mysql.time_zone_leap_second OK
mysql.time_zone_name OK
mysql.time_zone_transition OK
mysql.time_zone_transition_type OK
mysql.user OK
The sys schema is already up to date (version 1.5.1).
Checking databases.
sys.sys_config OK
test.t OK
test.t1 OK
test.t3 OK
test.t4 OK
test.t5 OK
Upgrade process completed successfully.
Checking if update is needed.
[mysql@roidb01 bin]$ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.19-log Source distribution
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| roidba |
| sys |
| test |
+--------------------+
6 rows in set (0.00 sec)
mysql>
[root@roidb01 performance_schema]# ls -l
total 1060
-rw-r----- 1 mysql mysql 8706 Jun 21 05:42 accounts.frm
-rw-r----- 1 mysql mysql 8624 Jun 21 05:42 cond_instances.frm
-rw-r----- 1 mysql mysql 61 Jun 21 05:42 db.opt
-rw-r----- 1 mysql mysql 9103 Jun 21 05:42 events_stages_current.frm
-rw-r----- 1 mysql mysql 9103 Jun 21 05:42 events_stages_history.frm
-rw-r----- 1 mysql mysql 9103 Jun 21 05:42 events_stages_history_long.frm
-rw-r----- 1 mysql mysql 8874 Jun 21 05:42 events_stages_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 21 05:42 events_stages_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 8854 Jun 21 05:42 events_stages_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 21 05:42 events_stages_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 8814 Jun 21 05:42 events_stages_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 10597 Jun 21 05:42 events_statements_current.frm
-rw-r----- 1 mysql mysql 10597 Jun 21 05:42 events_statements_history.frm
-rw-r----- 1 mysql mysql 10597 Jun 21 05:42 events_statements_history_long.frm
-rw-r----- 1 mysql mysql 10000 Jun 21 05:42 events_statements_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 10102 Jun 21 05:42 events_statements_summary_by_digest.frm
-rw-r----- 1 mysql mysql 9970 Jun 21 05:42 events_statements_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 10369 Jun 21 05:42 events_statements_summary_by_program.frm
-rw-r----- 1 mysql mysql 9980 Jun 21 05:42 events_statements_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 9970 Jun 21 05:42 events_statements_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 9940 Jun 21 05:42 events_statements_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 9800 Jun 21 05:42 events_transactions_current.frm
-rw-r----- 1 mysql mysql 9800 Jun 21 05:42 events_transactions_history.frm
-rw-r----- 1 mysql mysql 9800 Jun 21 05:42 events_transactions_history_long.frm
-rw-r----- 1 mysql mysql 9468 Jun 21 05:42 events_transactions_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 9438 Jun 21 05:42 events_transactions_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 9448 Jun 21 05:42 events_transactions_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 9438 Jun 21 05:42 events_transactions_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 9408 Jun 21 05:42 events_transactions_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 9401 Jun 21 05:42 events_waits_current.frm
-rw-r----- 1 mysql mysql 9401 Jun 21 05:42 events_waits_history.frm
-rw-r----- 1 mysql mysql 9401 Jun 21 05:42 events_waits_history_long.frm
-rw-r----- 1 mysql mysql 8874 Jun 21 05:42 events_waits_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 21 05:42 events_waits_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 8878 Jun 21 05:42 events_waits_summary_by_instance.frm
-rw-r----- 1 mysql mysql 8854 Jun 21 05:42 events_waits_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 8844 Jun 21 05:42 events_waits_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 8814 Jun 21 05:42 events_waits_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 8654 Jun 21 05:42 file_instances.frm
-rw-r----- 1 mysql mysql 9740 Jun 21 05:42 file_summary_by_event_name.frm
-rw-r----- 1 mysql mysql 9844 Jun 21 05:42 file_summary_by_instance.frm
-rw-r----- 1 mysql mysql 8628 Jun 21 05:42 global_status.frm
-rw-r----- 1 mysql mysql 8628 Jun 21 05:42 global_variables.frm
-rw-r----- 1 mysql mysql 10483 Jun 21 05:42 host_cache.frm
-rw-r----- 1 mysql mysql 8676 Jun 21 05:42 hosts.frm
-rw-r----- 1 mysql mysql 9240 Jun 21 05:42 memory_summary_by_account_by_event_name.frm
-rw-r----- 1 mysql mysql 9210 Jun 21 05:42 memory_summary_by_host_by_event_name.frm
-rw-r----- 1 mysql mysql 9220 Jun 21 05:42 memory_summary_by_thread_by_event_name.frm
-rw-r----- 1 mysql mysql 9210 Jun 21 05:42 memory_summary_by_user_by_event_name.frm
-rw-r----- 1 mysql mysql 9180 Jun 21 05:42 memory_summary_global_by_event_name.frm
-rw-r----- 1 mysql mysql 8998 Jun 21 05:42 metadata_locks.frm
-rw-r----- 1 mysql mysql 8684 Jun 21 05:42 mutex_instances.frm
-rw-r----- 1 mysql mysql 8908 Jun 21 05:42 objects_summary_global_by_type.frm
-rw-r----- 1 mysql mysql 8776 Jun 21 05:42 performance_timers.frm
-rw-r----- 1 mysql mysql 10541 Jun 21 05:42 prepared_statements_instances.frm
-rw-r----- 1 mysql mysql 8624 Jun 21 05:42 replication_applier_configuration.frm
-rw-r----- 1 mysql mysql 8849 Jun 21 05:42 replication_applier_status_by_coordinator.frm
-rw-r----- 1 mysql mysql 8953 Jun 21 05:42 replication_applier_status_by_worker.frm
-rw-r----- 1 mysql mysql 8759 Jun 21 05:42 replication_applier_status.frm
-rw-r----- 1 mysql mysql 17724 Jun 21 05:42 replication_connection_configuration.frm
-rw-r----- 1 mysql mysql 9215 Jun 21 05:42 replication_connection_status.frm
-rw-r----- 1 mysql mysql 8750 Jun 21 05:42 replication_group_members.frm
-rw-r----- 1 mysql mysql 9134 Jun 21 05:42 replication_group_member_stats.frm
-rw-r----- 1 mysql mysql 8758 Jun 21 05:42 rwlock_instances.frm
-rw-r----- 1 mysql mysql 8716 Jun 21 05:42 session_account_connect_attrs.frm
-rw-r----- 1 mysql mysql 8716 Jun 21 05:42 session_connect_attrs.frm
-rw-r----- 1 mysql mysql 8628 Jun 21 05:42 session_status.frm
-rw-r----- 1 mysql mysql 8628 Jun 21 05:42 session_variables.frm
-rw-r----- 1 mysql mysql 8701 Jun 21 05:42 setup_actors.frm
-rw-r----- 1 mysql mysql 8605 Jun 21 05:42 setup_consumers.frm
-rw-r----- 1 mysql mysql 8637 Jun 21 05:42 setup_instruments.frm
-rw-r----- 1 mysql mysql 8784 Jun 21 05:42 setup_objects.frm
-rw-r----- 1 mysql mysql 8650 Jun 21 05:42 setup_timers.frm
-rw-r----- 1 mysql mysql 8818 Jun 21 05:42 socket_instances.frm
-rw-r----- 1 mysql mysql 9740 Jun 21 05:42 socket_summary_by_event_name.frm
-rw-r----- 1 mysql mysql 9804 Jun 21 05:42 socket_summary_by_instance.frm
-rw-r----- 1 mysql mysql 8688 Jun 21 05:42 status_by_account.frm
-rw-r----- 1 mysql mysql 8658 Jun 21 05:42 status_by_host.frm
-rw-r----- 1 mysql mysql 8668 Jun 21 05:42 status_by_thread.frm
-rw-r----- 1 mysql mysql 8658 Jun 21 05:42 status_by_user.frm
-rw-r----- 1 mysql mysql 8928 Jun 21 05:42 table_handles.frm
-rw-r----- 1 mysql mysql 10578 Jun 21 05:42 table_io_waits_summary_by_index_usage.frm
-rw-r----- 1 mysql mysql 10488 Jun 21 05:42 table_io_waits_summary_by_table.frm
-rw-r----- 1 mysql mysql 13186 Jun 21 05:42 table_lock_waits_summary_by_table.frm
-rw-r----- 1 mysql mysql 9335 Jun 21 05:42 threads.frm
-rw-r----- 1 mysql mysql 8676 Jun 21 05:42 users.frm
-rw-r----- 1 mysql mysql 8668 Jun 21 05:42 user_variables_by_thread.frm
-rw-r----- 1 mysql mysql 8668 Jun 21 05:42 variables_by_thread.frm
[root@roidb01 performance_schema]#