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Editorial Team
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Asked: 2026-06-06T10:39:45+00:00

I have no idea if this question fit to SO, but if it doesn’t

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I have no idea if this question fit to SO, but if it doesn’t just close it…

The problem is that after migrating to another dedicated server, I can not get my MySQL server started, the loggs are saying the following:

120625 13:04:10 mysqld_safe mysqld from pid file /var/db/mysql/ropp.pid ended
120625 13:04:29 mysqld_safe Starting mysqld daemon with databases from /var/db/mysql
120625 13:04:29 InnoDB: The InnoDB memory heap is disabled
120625 13:04:29 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120625 13:04:29 InnoDB: Compressed tables use zlib 1.2.3
120625 13:04:29 InnoDB: Initializing buffer pool, size = 128.0M
120625 13:04:29 InnoDB: Completed initialization of buffer pool
InnoDB: Error: log file ./ib_logfile0 is of different size 0 104857600 bytes
InnoDB: than specified in the .cnf file 0 5242880 bytes!
120625 13:04:29 [ERROR] Plugin 'InnoDB' init function returned error.
120625 13:04:29 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
120625 13:04:29 [ERROR] Unknown/unsupported storage engine: InnoDB
120625 13:04:29 [ERROR] Aborting

120625 13:04:29 [Note] /usr/local/libexec/mysqld: Shutdown complete

120625 13:04:29 mysqld_safe mysqld from pid file /var/db/mysql/ropp.pid ended

Where is the problem and what do I have to do?
My MySQL server version is 5.5.

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1 Answer

  1. Editorial Team

    The problem is that mysql configuration on your new server does not match the older one. The variable innodb_log_file_size is set to 5M but actual size of log is 100MB. You need to change that value in my.cnf.

    Shutdown MySQL server if it is running (it should not be). Edit my.cnf and change the value of innodb_log_file_size to 100M

    innodb_log_file_size = 100M

    This should fix the problem. Start the server. If it doesn’t work, then stop the server, move the ib_logfile0 and ib_logfile1 to .bak and start the server again.

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