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Re: Major MySQL problems
Posted by: Rick James
Date: February 12, 2010 11:04AM

Stay away from the underlying files until you understand the ramifications of what you are doing.

The size of the innodb logs is controlled by one of the my.cnf settings. However, if they do not match, InnoDB cannot come up (as you discovered). If MySQL is gracefully shutdown, the logs can be removed, and will be created upon restart. (That is how to change the size of the logs.) If it was an ungraceful shutdown, those logs are necessary for the integrity of InnoDB -- changing/deleting/etc the files would cause trouble.

A .frm file contains the schema for one table. Moving/removing it will cause trouble. It can possibly be recreated by CREATE TABLE, but probably should be done in another database, then moved to the right database (directory). I do not know if this will work.

Read the docs about --force-recovery.

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