昨天遇到的一个问题

 昨天去客户现场， 遇到了一个貌似不咋地的问题。

描述如下：

  IBDATA1的体积太大， 已经达到了300多G， 然后要扩展新的IBDATA， 于是我就在配置文件里面新加了一句，

innodb_data_file_path = /old/ibdata1:296664170496;/new/ibdata2:500G:autoextend:max:1000G

然后看到错误日志里面出现下面的信息，

 

110322 18:00:59 [Note] Plugin 'FEDERATED' is disabled.

InnoDB: Error: data file d:\data\ibdata1 is of a different size

InnoDB:  18106944  pages (rounded down to MB)

InnoDB: than specified in the .cnf file  262080 pages!

InnoDB: Could not open or create data files.

InnoDB: If you tried to add new data files, and it failed here,

InnoDB: you should now edit innodb_data_file_path in my.cnf back

InnoDB: to what it was, and remove the new ibdata files InnoDB created

InnoDB: in this failed attempt. InnoDB only wrote those files full of

InnoDB: zeros, but did not yet use them in any way. But be careful: do not

InnoDB: remove old data files which contain your precious data!

110322 18:01:01 [ERROR] Plugin 'InnoDB' init function returned error.

110322 18:01:01 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.

110322 18:01:01 [ERROR] Unknown/unsupported table type: INNODB

110322 18:01:01 [ERROR] Aborting

 

解决办法：

就是把ibdata1的文件单位扩大的MB，而不是字节，像下面这样写就对了，

innodb_data_file_path = /old/ibdata1:289711104M;/new/ibdata2:500G:autoextend:max:1000G

 

本文出自 “上帝，咱们不见不散！” 博客，谢绝转载！