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MySQL【表空间迁移大表】

December 3, 2019, 7:57 am
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0
0
0. 目标端必须有同名表，没有则建一个空表；

####################################

1、 源端文件准备

源端： 
   flush tables t for export; 

复制 
t.ibd, t.cfg到目标端。 


###############################

flush tables tt7   for export; 

cp  tt7*   ../ops



2、 目标端<存在同样的表则>丢弃原来的数据文件
目标端： 

 alter table tt7  discard tablespace;




3、 目标端加载新的数据文件 t.ibd

alter table tt7 import tablespace; 



4、源端释放锁

源端： 
unlock tables; 

SELECT  * FROM   ops2.tt7    ;
SELECT  * FROM   ops.tt7    ;


import tablespace报错：

mysql> alter table tt7 import tablespace; 
ERROR 1812 (HY000): Tablespace is missing for table ops.tt7.


确认再相应的目录存在两个文件
确认属主和权限


#####################################################
处理过程

[root@qaserver120 ops]# ll
total 80
drwxr-xr-x 2 root  root      36 Dec  2 21:42 000
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
[root@qaserver120 ops]# 
[root@qaserver120 ops]# 
[root@qaserver120 ops]# 
[root@qaserver120 ops]# cp 000
[root@qaserver120 ops]# ll
total 196
drwxr-xr-x 2 root  root      36 Dec  2 21:42 000
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r----- 1 root  root     627 Dec  2 21:45 tt7.cfg
-rw-r----- 1 root  root  114688 Dec  2 21:45 tt7.ibd
[root@qaserver120 ops]# pwd
/data/mysql/ops
[root@qaserver120 ops]# ll
total 196
drwxr-xr-x 2 root  root      36 Dec  2 21:42 000
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r----- 1 root  root     627 Dec  2 21:45 tt7.cfg
-rw-r----- 1 root  root  114688 Dec  2 21:45 tt7.ibd
[root@qaserver120 ops]# chown mysql.mysql tt7*
[root@qaserver120 ops]# 
[root@qaserver120 ops]# 
[root@qaserver120 ops]# 
[root@qaserver120 ops]# 
[root@qaserver120 ops]# ll
total 196
drwxr-xr-x 2 root  root      36 Dec  2 21:42 000
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r----- 1 mysql mysql    627 Dec  2 21:45 tt7.cfg
-rw-r----- 1 mysql mysql 114688 Dec  2 21:46 tt7.ibd
[root@qaserver120 ops]# 
#####################################################

mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
| tt7           |
+---------------+
2 rows in set (0.00 sec)

mysql> select * from tt7;
ERROR 1814 (HY000): Tablespace has been discarded for table 'tt7'
mysql> 
mysql> 
mysql> alter table tt7 import tablespace; 
ERROR 1812 (HY000): Tablespace is missing for table ops.tt7.
mysql> 
mysql> 
mysql> 
mysql> alter table tt7 import tablespace;
Query OK, 0 rows affected (0.08 sec)

mysql> 
mysql> 
mysql> select * from tt7;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql>







###############################################

################################################

mysql> mysql> show tables;
+----------------+
| Tables_in_ops2 |
+----------------+
| tt2            |
| tt3            |
| tt7            |
+----------------+
3 rows in set (0.00 sec)

mysql> 
mysql> 
mysql> 
mysql> 
mysql> use ops
Database changed
mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
+---------------+
1 row in set (0.00 sec)

mysql> 
mysql> use ops2;
Database changed
mysql> select * from tt7;
+--------+------+
| x      | y    |
+--------+------+
| BBBBBB | NULL |
+--------+------+
1 row in set (0.00 sec)

mysql> 
mysql> 
mysql> insert into tt7 select * from tt3;
Query OK, 3 rows affected (0.00 sec)
Records: 3  Duplicates: 0  Warnings: 0

mysql> insert into tt7 select * from tt3;
Query OK, 3 rows affected (0.00 sec)
Records: 3  Duplicates: 0  Warnings: 0

mysql> select * from tt7;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql> 
mysql> 
mysql> 
mysql> 
mysql> 
mysql> commit;
Query OK, 0 rows affected (0.00 sec)

mysql> 
mysql> 
mysql> 
mysql> 
mysql> 
mysql> 
mysql> 
mysql> exit
Bye
[root@qaserver120 pkg]# cd /data/mysql/ops2
[root@qaserver120 ops2]# ll
total 240
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt3.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:36 tt7.ibd
[root@qaserver120 ops2]# 
[root@qaserver120 ops2]# 
[root@qaserver120 ops2]# 
[root@qaserver120 ops2]# mysql -u'root'  -p'fgxkB9;Zq40^MFQUi$PJ'        -A
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 56
Server version: 8.0.18 MySQL Community Server - GPL

Copyright (c) 2000, 2019, 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> 
mysql> 
mysql> 
mysql> use ops2
Database changed
mysql> 
mysql> flush tables tt7   for export; 
Query OK, 0 rows affected (0.00 sec)

mysql> show tables;
+----------------+
| Tables_in_ops2 |
+----------------+
| tt2            |
| tt3            |
| tt7            |
+----------------+
3 rows in set (0.01 sec)

mysql> exit
Bye
[root@qaserver120 ops2]# ll
total 240
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt3.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:36 tt7.ibd
[root@qaserver120 ops2]# ll
total 240
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt3.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:36 tt7.ibd
[root@qaserver120 ops2]# pwd
/data/mysql/ops2
[root@qaserver120 ops2]# cd  cd /data/mysql 
-bash: cd: cd: No such file or directory
[root@qaserver120 ops2]#  cd /data/mysql/ops2
[root@qaserver120 ops2]# ll
total 240
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:17 tt3.ibd
-rw-r----- 1 mysql mysql 114688 Dec  2 21:36 tt7.ibd
[root@qaserver120 ops2]# ll -al
total 244
drwxr-x---  2 mysql mysql     51 Dec  2 21:38 .
drwxr-xr-x 12 mysql mysql   4096 Dec  2 21:17 ..
-rw-r-----  1 mysql mysql 114688 Dec  2 21:17 tt2.ibd
-rw-r-----  1 mysql mysql 114688 Dec  2 21:17 tt3.ibd
-rw-r-----  1 mysql mysql 114688 Dec  2 21:36 tt7.ibd
[root@qaserver120 ops2]# pwd
/data/mysql/ops2
[root@qaserver120 ops2]# mysql -u'root'  -p'fgxkB9;Zq40^MFQUi$PJ'        -A
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 57
Server version: 8.0.18 MySQL Community Server - GPL

Copyright (c) 2000, 2019, 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> use ops2
Database changed
mysql> show tables;
+----------------+
| Tables_in_ops2 |
+----------------+
| tt2            |
| tt3            |
| tt7            |
+----------------+
3 rows in set (0.00 sec)

mysql> select * from tt7;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql> flush tables tt7   for export; 
Query OK, 0 rows affected (0.00 sec)

mysql> use ops
Database changed
mysql> ll
    -> ;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'll' at line 1
mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
+---------------+
1 row in set (0.00 sec)

mysql> 
mysql> 
mysql> alter table tt7 import tablespace; 
ERROR 1100 (HY000): Table 'tt7' was not locked with LOCK TABLES
mysql> 
mysql> 
mysql> use ops2
Database changed
mysql> show tables;
+----------------+
| Tables_in_ops2 |
+----------------+
| tt2            |
| tt3            |
| tt7            |
+----------------+
3 rows in set (0.00 sec)

mysql> select * from tt7;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql> unlock tables;
Query OK, 0 rows affected (0.00 sec)

mysql> show create table  tt7;
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table                                                                                                                                                                                         |
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tt7   | CREATE TABLE `tt7` (
  `x` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs DEFAULT NULL,
  `y` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_as_cs |
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

mysql> use ops
Database changed
mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
+---------------+
1 row in set (0.01 sec)

mysql>  CREATE TABLE `tt7` (
    ->   `x` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs DEFAULT NULL,
    ->   `y` int(11) DEFAULT NULL
    -> ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_as_cs ;
Query OK, 0 rows affected, 1 warning (0.02 sec)

mysql> 
mysql> 
mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
| tt7           |
+---------------+
2 rows in set (0.00 sec)

mysql> select * from tt7;
Empty set (0.00 sec)

mysql> 
mysql> alter table tt7  discard tablesapce; 
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'tablesapce' at line 1
mysql> alter table tt7  discard tablespace;
Query OK, 0 rows affected (0.03 sec)

mysql> 
mysql> 
mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
| tt7           |
+---------------+
2 rows in set (0.00 sec)

mysql> select * from tt7;
ERROR 1814 (HY000): Tablespace has been discarded for table 'tt7'
mysql> 
mysql> 
mysql> 
mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
| tt7           |
+---------------+
2 rows in set (0.00 sec)

mysql> select * from tt7;
ERROR 1814 (HY000): Tablespace has been discarded for table 'tt7'
mysql> 
mysql> 
mysql> alter table tt7 import tablespace; 
ERROR 1812 (HY000): Tablespace is missing for table `ops`.`tt7`.
mysql> 
mysql> 
mysql> 
mysql> alter table tt7 import tablespace;
Query OK, 0 rows affected (0.08 sec)

mysql> 
mysql> 
mysql> select * from tt7;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql> SELECT  * FROM   ops2.tt7    ;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql> SELECT  * FROM   ops.tt7    ;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql> 
mysql> 
mysql> 
mysql> unlock tables; 
Query OK, 0 rows affected (0.00 sec)

mysql> unlock tables; 
Query OK, 0 rows affected (0.00 sec)

mysql> use ops
Database changed
mysql> show tables;
+---------------+
| Tables_in_ops |
+---------------+
| tt2           |
| tt7           |
+---------------+
2 rows in set (0.00 sec)

mysql> 
mysql> 
mysql> 
mysql> use ops2;
Database changed
mysql> 
mysql> 
mysql> show tables;
+----------------+
| Tables_in_ops2 |
+----------------+
| tt2            |
| tt3            |
| tt7            |
+----------------+
3 rows in set (0.01 sec)

mysql> 
mysql> select * from tt7;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)

mysql> 
mysql> use ops;
Database changed
mysql> 
mysql> 
mysql> select * from tt7;
+--------------+------+
| x            | y    |
+--------------+------+
| BBBBBB       | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
| AAAAAA       | NULL |
| BBBBBB       | NULL |
| 555555555555 | NULL |
+--------------+------+
7 rows in set (0.00 sec)




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