运行时ALTER TABLE ... ADD COLUMN ...我得到：
Error Code : 1878
Message : Temporary file write failure.
以及 log_error (/DATA/mysql/.err)
2016-06-29 17:27:01 7f11f08a7700 InnoDB: Error: Write to file (merge) failed at offset 3145728.
InnoDB: 1048576 bytes should have been written, only 327680 were written.
InnoDB: Operating system error number 0.
InnoDB: Check that your OS and file system support files of this size.
InnoDB: Check also that the disk is not full or a disk quota exceeded.
InnoDB: Error …mysql ×1