本文讲述了MySQL异常恢复之无主键情况下innodb数据恢复的方法。，具体如下：
在mysql的innodb引擎的数据库异常恢复中,一般都要求有主键或者唯一index,其实这个不是必须的,当没有index信息之时,可以在整个表级别的index_id进行恢复
创建模拟表—无主键
| mysql> CREATE TABLE `t1` ( -> `messageId` varchar(30) character set utf8 NOT NULL, -> `tokenId` varchar(20) character set utf8 NOT NULL, -> `mobile` varchar(14) character set utf8 default NULL, -> `msgFormat` int(1) NOT NULL, -> `msgContent` varchar(1000) character set utf8 default NULL, -> `scheduleDate` timestamp NOT NULL default '0000-00-00 00:00:00', -> `deliverState` int(1) default NULL, -> `deliverdTime` timestamp NOT NULL default '0000-00-00 00:00:00' -> ) ENGINE=INnodb DEFAULT CHARSET=utf8; Query OK, 0 rows affected (0.00 sec) mysql> insert into t1 select * from sms_service.sms_send_record; Query OK, 11 rows affected (0.00 sec) Records: 11 Duplicates: 0 Warnings: 0 ………… mysql> insert into t1 select * from t1; Query OK, 81664 rows affected (2.86 sec) Records: 81664 Duplicates: 0 Warnings: 0 mysql> insert into t1 select * from t1; Query OK, 163328 rows affected (2.74 sec) Records: 163328 Duplicates: 0 Warnings: 0 mysql> select count(*) from t1; +----------+ | count(*) | +----------+ | 326656 | +----------+ 1 row in set (0.15 sec) |
解析innodb文件
| [root@web103 mysql_recovery]# rm -rf pages-ibdata1/ [root@web103 mysql_recovery]# ./stream_parser -f /var/lib/mysql/ibdata1 Opening file: /var/lib/mysql/ibdata1 File information: ID of device containing file: 2049 inode number: 1344553 protection: 100660 (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 time of last access: 1440819443 Sat Aug 29 11:37:23 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) Opening file: /var/lib/mysql/ibdata1 File information: ID of device containing file: 2049 inode number: 1344553 protection: 100660 (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 Opening file: /var/lib/mysql/ibdata1 File information: time of last access: 1440819443 Sat Aug 29 11:37:23 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 ID of device containing file: 2049 inode number: 1344553 protection: 100660 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) Opening file: /var/lib/mysql/ibdata1 File information: ID of device containing file: 2049 inode number: 1344553 protection: 100660 (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 time of last access: 1440819443 Sat Aug 29 11:37:23 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 time of last access: 1440819443 Sat Aug 29 11:37:23 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) Opening file: /var/lib/mysql/ibdata1 File information: ID of device containing file: 2049 inode number: 1344553 protection: 100660 (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 time of last access: 1440819443 Sat Aug 29 11:37:23 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) Opening file: /var/lib/mysql/ibdata1 File information: ID of device containing file: 2049 inode number: 1344553 protection: 100660 (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 time of last access: 1440819443 Sat Aug 29 11:37:23 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 Opening file: /var/lib/mysql/ibdata1 File information: ID of device containing file: 2049 inode number: 1344553 protection: 100660 (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) time of last access: 1440819443 Sat Aug 29 11:37:23 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) Opening file: /var/lib/mysql/ibdata1 File information: ID of device containing file: 2049 inode number: 1344553 protection: 100660 (regular file) number of hard links: 1 user ID of owner: 27 group ID of owner: 27 device ID (if special file): 0 blocksize for filesystem I/O: 4096 number of blocks allocated: 463312 time of last access: 1440819465 Sat Aug 29 11:37:45 2015 time of last modification: 1440819463 Sat Aug 29 11:37:43 2015 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) All workers finished in 0 sec |
