修改配置文件导致ib_logfile大小不匹配及mysql无法启动

修改配置文件导致ib_logfile大小不匹配及mysql无法启动2014-10-28#错误原因：在my.cnf文件里面修改了innodb_log_file_size，

#导致ib_logfile文件的大小与之前存在的文件大小不匹配；

#解决方法：在干净关闭数据库的情况下，删除ib_logfile，然后重启数据库

120221 06:47:03 mysqld_safe mysqld from pid file /home/mysql/jsunsa.pid ended

120221 06:47:07 mysqld_safe Starting mysqld daemon with databases from /home/mysql

120221 6:47:07 [Warning] The syntax "--log-slow-queries" is deprecated and will be removed in a future release. Please use "--slow-query-log"/"--slow-query-log-file" instead.

120221 6:47:07 [Note] Plugin "FEDERATED" is disabled.

120221 6:47:08 InnoDB: The InnoDB memory heap is disabled

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120221 6:47:08 InnoDB: Mutexes and rw_locks use InnoDB"s own implementation

120221 6:47:08 InnoDB: Compressed tables use zlib 1.2.3

120221 6:47:08 InnoDB: Using Linux native AIO

120221 6:47:08 InnoDB: Initializing buffer pool, size = 16.0M

120221 6:47:08 InnoDB: Completed initialization of buffer pool

InnoDB: Error: log file /home/mysql/ib_logfile0 is of different size 0 5242880 bytes

InnoDB: than specified in the .cnf file 0 134217728 bytes！

120221 6:47:08 [ERROR] Plugin "InnoDB" init function returned error.

120221 6:47:08 [ERROR] Plugin "InnoDB" registration as a STORAGE ENGINE failed.

120221 6:47:08 [ERROR] Unknown/unsupported storage engine: INNODB

120221 6:47:08 [ERROR] Aborting

120221 6:47:08 [Note] /usr/sbin/mysqld: Shutdown complete