显示正在使用的硬盘信息
首先使用hdparm命令查看硬盘的信息。可以确认能够支持的功能和当前的配置情况。显示信息-i是旧的选项。在这里使用的是显示内容比-i更为详细的-I选项。下面是-I选项的输出结果。关于设置选项的地方用阴影表示。
hdparm-I/dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number:WDC WD1600AAJS-19M0A0
Serial Number:WD-WCAV32353380
Firmware Revision:01.03E01
Transport:Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5
Standards:
Supported:8 7 6 5
Likely used:8
Configuration:
……
Logical/Physical Sector size:512 bytes
device size with M=1024*1024:152627 MBytes
device size with M=1000*1000:160041 MBytes(160 GB)
cache/buffer size=8192 KBytes
Capabilities:
LBA, IORDY(can be disabled)
Queue depth:32-Q选项(硬件中支持的最大值)
Standby timer values:spec'd by Standard, with device specific minimum
R/W multiple sector transfer:Max=16 Current=16-m选项
Recommended acoustic management value:128,current value:128
-M选项
DMA:mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5*udma6
-X选项
Cycle time:min=120ns recommended=120ns
PIO:pio0 pio1 pio2 pio3 pio4
Cycle time:no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
*
SMART feature set
Security Mode feature set
*
Power Management feature set
*
Write cache-W选项
*
Look-ahead-A选项
*
Host Protected Area feature set
*
WRITE_BUFFER command
*
READ_BUFFER command
*
NOP cmd
*
DOWNLOAD_MICROCODE
Power-Up In Standby feature set
*
SET_FEATURES required to spinup after power up
SET_MAX security extension
*
Automatic Acoustic Management feature set-M选项
*
48-bit Address feature set
*
Device Configuration Overlay feature set
*
Mandatory FLUSH_CACHE
*
FLUSH_CACHE_EXT
*
SMART error logging
*
SMART self-test
*
General Purpose Logging feature set
……
*
Native Command Queueing(NCQ)-Q选项
*
Host-initiated interface power management HIPM
*
Phy event counters
DMA Setup Auto-Activate optimization
Device-initiated interface power management DIPM
……
Security:
Master password revision code=65534
……
这样就可以通过-I选项了解磁盘的详细情况。Commands/features:显示的是磁盘功能列表。Enabled列中有*标记的,是这个硬盘支持的。
下面介绍hdparm命令的选项。