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160315 17:08:19 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
160315 17:08:19 [Warning] Using unique option prefix thread_cache instead of thread_cache_size is deprecated and will be removed in a future release. Please use the full name instead.
160315 17:08:19 InnoDB: The InnoDB memory heap is disabled
160315 17:08:19 InnoDB: Mutexes and rw_locks use GCC atomic builtins
160315 17:08:19 InnoDB: Compressed tables use zlib 1.2.3
160315 17:08:19 InnoDB: Initializing buffer pool, size = 4.0G
160315 17:08:19 InnoDB: Completed initialization of buffer pool
InnoDB: Error: auto-extending data file ./ibdata1 is of a different size
InnoDB: 1152 pages (rounded down to MB) than specified in the .cnf file:
InnoDB: initial 65536 pages, max 0 (relevant if non-zero) pages!
160315 17:08:19 InnoDB: Could not open or create data files.
160315 17:08:19 InnoDB: If you tried to add new data files, and it failed here,
160315 17:08:19 InnoDB: you should now edit innodb_data_file_path in my.cnf back
160315 17:08:19 InnoDB: to what it was, and remove the new ibdata files InnoDB created
160315 17:08:19 InnoDB: in this failed attempt. InnoDB only wrote those files full of
160315 17:08:19 InnoDB: zeros, but did not yet use them in any way. But be careful: do not
160315 17:08:19 InnoDB: remove old data files which contain your precious data!
160315 17:08:19 [ERROR] Plugin ‘InnoDB‘ init function returned error.
160315 17:08:19 [ERROR] Plugin ‘InnoDB‘ registration as a STORAGE ENGINE failed.
160315 17:08:19 [ERROR] Unknown/unsupported storage engine: InnoDB
160315 17:08:19 [ERROR] Aborting
160315 17:08:19 [Note] /application/mysql5.5.38/bin/mysqld: Shutdown complete
160315 17:08:19 mysqld_safe mysqld from pid file /usr/local/mysql/data/Mysql.master.xxjy.com.pid ended
解决：删除 ./ib_logfile0
rm ibdata1
186 mv ib_logfile0 /root/tools/
187 mv ib_logfile1 /root/tools/
重启服务
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原文地址：http://www.cnblogs.com/tom-li/p/5280721.html
