mysql无法正常起动，有错误信息，帮忙看一下

AE86

localhost.localdomain.err的内容如下：
031121 16:42:35  mysqld started
031121 16:42:36  InnoDB: Operating system error number 13 in a file operation.
InnoDB: See http://www.innodb.com/ibman.html for installation help.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory.
InnoDB: File name ./ibdata1
InnoDB: File operation call: 'create'.
InnoDB: Cannot continue operation.
031121 16:42:36  mysqld ended


怎么解决问题？

lcd

ibdata1目录的权限问题，把它的属主改为mysql