在准备替换或加装硬盘时，如何得到硬盘信息？

可以用smartctl,hdparm等命令来查询。

在日志中显示硬盘有坏扇区

tail /var/log/messages

Mar 1 09:42:55 c1g smartd[1848]: Device: /dev/hda, 2 Currently unreadable (pending) sectors

Mar 1 09:42:55 c1g smartd[1848]: Device: /dev/hda, 2 Offline uncorrectable sectors

dmesg中也有错误信息

dmesg

ide: failed opcode was: unknown

hda: no DRQ after issuing WRITE

ide0: reset: success

hda: status timeout: status=0xd0 { Busy }

对硬盘做一下健康检查

smartctl -H /dev/hda

smartctl version 5.33 [i386-redhat-linux-gnu] Copyright (C) 2002-4 Bruce Allen

Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

检测通过，保险起见还是准备换硬盘。

查看下当前硬盘的型号,可以得到硬盘接口为SATAII，及尺寸大小3.5"

smartctl -a /dev/hda

smartctl version 5.33 [i386-redhat-linux-gnu] Copyright (C) 2002-4 Bruce Allen

Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===

Device Model: ST3160815AS

Serial Number: 6RA7DWM4

Firmware Version: 4.AAB

User Capacity: 160,040,803,840 bytes

Device is: Not in smartctl database [for details use: -P showall]

ATA Version is: 7

ATA Standard is: Exact ATA specification draft version not indicated

Local Time is: Mon Mar 1 10:36:55 2010 CST

SMART support is: Available - device has SMART capability.

SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

hdparm也可以得到硬盘型号

hdparm -i /dev/hda

/dev/hda:

Model=ST3160815AS, FwRev=4.AAB, SerialNo=6RA7DWM4

Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }

RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4

BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=off

CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455

IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}

PIO modes: pio0 pio1 pio2 pio3 pio4

DMA modes: mdma0 mdma1 mdma2

UDMA modes: udma0 udma1 udma2

AdvancedPM=no WriteCache=enabled

Drive conforms to: device does not report version:

* signifies the current active mode

也可以通过主板型号来得知支持的硬盘

dmidecode

System Information

Manufacturer: Gigabyte Technology Co., Ltd.

Product Name: 945GCM-S2L