Ubuntu 16.04.3 LTS 下mysql文件迁移失败

面板系统5.2，使用系统mysql5.5的软件自带的数据迁移，显示迁移成功，但是mysql服务无法启动。
日志如下：
171026 16:13:58 [Note] Plugin 'FEDERATED' is disabled.
/www/server/mysql/bin/mysqld: Table 'plugin' is read only
171026 16:13:58 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
171026 16:13:58 InnoDB: The InnoDB memory heap is disabled
171026 16:13:58 InnoDB: Mutexes and rw_locks use GCC atomic builtins
171026 16:13:58 InnoDB: Compressed tables use zlib 1.2.8
171026 16:13:58 InnoDB: Initializing buffer pool, size = 1.0G
171026 16:13:58 InnoDB: Completed initialization of buffer pool
171026 16:13:58  InnoDB: Operating system error number 13 in a file operation.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory.
InnoDB: File name /data/mysql_data/ibdata1
InnoDB: File operation call: 'create'.
InnoDB: Cannot continue operation.

求解答

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