I was importing an old SQL into existing schema. But the MySQL service was stopped suddenly. Now I’m not able to start the service. It seems that the ibdata1 file is somehow corrupted. Here are the logs I got:

2017-04-03T20:22:51.755926Z 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 35 2017-04-03T20:22:51.755950Z 0 [Note] InnoDB: Check that you do not already have another mysqld process using the same InnoDB data or log files. 2017-04-03T20:22:52.760218Z 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 35 2017-04-03T20:22:52.760248Z 0 [Note] InnoDB: Check that you do not already have another mysqld process using the same InnoDB data or log files. 2017-04-03T20:22:53.761599Z 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 35 2017-04-03T20:22:53.761623Z 0 [Note] InnoDB: Check that you do not already have another mysqld process using the same InnoDB data or log files. 2017-04-03T20:22:54.766279Z 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 35 2017-04-03T20:22:54.766308Z 0 [Note] InnoDB: Check that you do not already have another mysqld process using the same InnoDB data or log files. 2017-04-03T20:22:54.766316Z 0 [Note] InnoDB: Unable to open the first data file 2017-04-03T20:22:54.766342Z 0 [ERROR] InnoDB: Operating system error number 35 in a file operation. 2017-04-03T20:22:54.766369Z 0 [ERROR] InnoDB: Error number 35 means 'Resource temporarily unavailable' 2017-04-03T20:22:54.766376Z 0 [Note] InnoDB: Some operating system error numbers are described at http://dev.mysql.com/doc/refman/5.7/en/operating-system-error-codes.html 2017-04-03T20:22:54.766382Z 0 [ERROR] InnoDB: Cannot open datafile './ibdata1' 2017-04-03T20:22:54.766406Z 0 [ERROR] InnoDB: Could not open or create the system tablespace. If you tried to add new data files to the system tablespace, and it failed here, you should now edit innodb_data_file_path in my.cnf back to what it was, and remove the new ibdata files InnoDB created in this failed attempt. InnoDB only wrote those files full of zeros, but did not yet use them in any way. But be careful: do not remove old data files which contain your precious data! 2017-04-03T20:22:54.766417Z 0 [ERROR] InnoDB: Plugin initialization aborted with error Cannot open a file 2017-04-03T20:22:55.072312Z 0 [ERROR] Plugin 'InnoDB' init function returned error. 2017-04-03T20:22:55.072337Z 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 2017-04-03T20:22:55.072355Z 0 [ERROR] Failed to initialize plugins. 2017-04-03T20:22:55.072361Z 0 [ERROR] Aborting  2017-04-03T20:22:55.072372Z 0 [Note] Binlog end 2017-04-03T20:22:55.072484Z 0 [Note] Shutting down plugin 'CSV' 2017-04-03T20:22:55.072678Z 0 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 

I’ve tried several ways, such as adding the innodb_force_recovery in my.cnf and killing all of the MySQL process. None of them works. Could anyone help?