title: Mysql doesn't run
body: <p>I have no idea if this question fit to SO, but if it doesn't just close it...</p>
  
  <p>The problem is that after migrating to another dedicated server, I can not get my MySQL server started, the loggs are saying the following:</p>
  
  <pre><code>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
  </code></pre>
  
  <p>Where is the problem and what do I have to do?
  My MySQL server version is <code>5.5</code>. </p>