hdparam

bash

hdparm -I /dev/sda  # 磁盘信息
hdparm -Tt /dev/sda # 磁盘性能

hdparm	for
-t	device reads test
-T	cache reads test
-W	toggle write cache
-B 0-255	Advanced Power Management
-S 1-240	standby (spindown) timeout
-M	Automatic Acoustic Management

FAQ

text

SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 18 00 00 00 00 20 00 00 c0 00 00 00 00 f8 21 00 00 00 00 00 00 00 00 00 00

bash

sg_decode_sense 70 00 05 00 00 00 00 18 00 00 00 00 20 00 00 c0 00 00 00 00 f8 21 00 00 00 00 00 00 00 00 00 00