ERROR 1010 (HY000): Error dropping database 解决方案

报错：

mysql> drop database test;
ERROR 1010 (HY000): Error dropping database (can't rmdir './test/', errno: 17)

解决方法：

mysql> select @@datadir;
+-----------------+
| @@datadir |
+-----------------+
| /var/lib/mysql/ |
+-----------------+
1 row in set (0.00 sec)

$ sudo cd /var/lib/mysql/test/
$ sudo rm -rf *

再次执行删除：
mysql> drop database test;