查看磁盘信息

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

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

dmesg中也有错误信息
dmesg

1. ide: failed opcode was: unknown
2. hda: no DRQ after issuing WRITE
3. ide0: reset: success
4. hda: status timeout: status=0xd0 { Busy }

对硬盘做一下健康检查
smartctl -H /dev/hda

1. smartctl version 5.33 [i386-redhat-linux-gnu] Copyright (C) 2002-4 Bruce Allen
2. Home page is http://smartmontools.sourceforge.net/
3.  
4. === START OF READ SMART DATA SECTION ===
5. 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

1. smartctl version 5.33 [i386-redhat-linux-gnu] Copyright (C) 2002-4 Bruce Allen
2. Home page is http://smartmontools.sourceforge.net/
3.  
4. === START OF INFORMATION SECTION ===
5. Device Model:     ST3160815AS
6. Serial Number:    6RA7DWM4
7. Firmware Version: 4.AAB
8. User Capacity:    160,040,803,840 bytes
9. Device is:        Not in smartctl database [for details use: -P showall]
10. ATA Version is:   7
11. ATA Standard is:  Exact ATA specification draft version not indicated
12. Local Time is:    Mon Mar  1 10:36:55 2010 CST
13. SMART support is: Available - device has SMART capability.
14. SMART support is: Enabled
15.  
16. === START OF READ SMART DATA SECTION ===
17. SMART overall-health self-assessment test result: PASSED

hdparm也可以得到硬盘型号
hdparm -i /dev/hda

1. /dev/hda:
2.  
3.  Model=ST3160815AS, FwRev=4.AAB, SerialNo=6RA7DWM4
4.  Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
5.  RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
6.  BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=off
7.  CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
8.  IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
9.  PIO modes:  pio0 pio1 pio2 pio3 pio4
10.  DMA modes:  mdma0 mdma1 mdma2
11.  UDMA modes: udma0 udma1 udma2
12.  AdvancedPM=no WriteCache=enabled
13.  Drive conforms to: device does not report version:
14.  
15.  * signifies the current active mode

也可以通过主板型号来得知支持的硬盘
dmidecode

1. System Information
2.                 Manufacturer: Gigabyte Technology Co., Ltd.
3.                 Product Name: 945GCM-S2L