我在MySQL创建中遇到此错误。我正在做：

CREATE TABLE `blogReply` (

`Id` INT(24) NOT NULL AUTO_INCREMENT COMMENT 'Primary Key of This Table',

`blogId` INT(24) NOT NULL COMMENT 'Blog where this reply was posted',

`userId` INT(24) NULL COMMENT 'User the blog was posted by',

`name` VARCHAR(100) NULL DEFAULT 'Unknown' COMMENT 'The Name of the user that the reply was posted by',

`email` VARCHAR(100) NULL DEFAULT 'Unknown' COMMENT 'The Email of the user that the reply was posted by',

`http` VARCHAR(300) NULL DEFAULT 'Unknown' COMMENT 'The Webaddress of the user that the reply was posted by',

`message` TEXT NOT NULL COMMENT 'text of the blog',

`votes` INT(10) DEFAULT 0 COMMENT 'Rating of the Blog',

`ratedBy` TEXT COMMENT 'People who have already Voted on this blog',

`dateReg` BIGINT NOT NULL COMMENT 'Date the User was Registered',

PRIMARY KEY (`Id`),

CONSTRAINT `FK_userId` FOREIGN KEY(`userId`)

REFERENCES `user` (`Id`)

ON DELETE SET NULL

ON UPDATE CASCADE,

CONSTRAINT `FK_blogId` FOREIGN KEY(`blogId`)

REFERENCES `blog` (`Id`)

ON DELETE CASCADE

ON UPDATE CASCADE

) ENGINE = InnoDB;

有任何想法吗？错误状态：Can't create table './xxxxxxxx/blogReply.frm' (errno: 121)