【MySQL】InnoDB: Error: checksum mismatch in data file 报错

参考：http://www.jb51.net/article/66951.htm

用5.7版本启动原5.5实例后，再用5.5启动出现以下报错

InnoDB: Error: checksum mismatch in data file /data/mysql/ibdata1
160627 10:42:11 InnoDB: Could not open or create data files.
160627 10:42:11 InnoDB: If you tried to add new data files, and it failed here,
160627 10:42:11 InnoDB: you should now edit innodb_data_file_path in my.cnf back
160627 10:42:11 InnoDB: to what it was, and remove the new ibdata files InnoDB created
160627 10:42:11 InnoDB: in this failed attempt. InnoDB only wrote those files full of
160627 10:42:11 InnoDB: zeros, but did not yet use them in any way. But be careful: do not
160627 10:42:11 InnoDB: remove old data files which contain your precious data!
160627 10:42:11 [ERROR] Plugin ‘InnoDB‘ init function returned error.
160627 10:42:11 [ERROR] Plugin ‘InnoDB‘ registration as a STORAGE ENGINE failed.
160627 10:42:11 [ERROR] Unknown/unsupported storage engine: InnoDB
160627 10:42:11 [ERROR] Aborting

160627 10:42:11 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete

通过参数可以跳过错误启动，导出数据

innodb_force_recovery=6

innodb_purge_thread=0

时间： 2024-10-12 04:44:03

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