每一列的含义分别为: 第一列为 设备号 (number of issued reads. This is the total number of reads completed successfully.) 第二列为 次设备号 (number of reads merged) 第三列为 设备名称 (number of sectors read. This is the total number of sectors read successfully.) 第四列为 成功完成读的总次数 (numb…