今天在做innodb參數配置的時候，對其預設配置加以修改--結果導致啟動後的server竟然不支援innodb引擎。Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
錯誤記錄檔：
InnoDB: Data file /usr/local/mysql4/data/ibdata2 did not exist: new to be created
100702 14:34:53 InnoDB: Setting file /usr/local/mysql4/data/ibdata2 size to 20 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: No valid checkpoint found.
InnoDB: If this error appears when you are creating an InnoDB database,
InnoDB: the problem may be that during an earlier attempt you managed
InnoDB: to create the InnoDB data files, but log file creation failed.
InnoDB: If that is the case, please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.1/en/error-creating-innodb.html
100702 14:34:54 [ERROR] Plugin 'InnoDB' init function returned error.
100702 14:34:54 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
在遇到這些情況的時候，我起初考慮是沒有建立新記錄檔的許可權。
實則不然
當我在未正常關閉server的情況下對其參數修改，
修改之後沒有刪除ib_logfile檔案，ib_logfile檔案中記錄些innodb引擎非常有用的資訊比如說預設的innodb預設的配置資訊，你又是在未正常關閉server情況下操作的，所以導致重啟後的server不支援innodb引擎。
rm -rf ib_logfile*
正確配置參數
重啟server。
