服务器系统坏道检测,使用Smartctl查Dell服务器坏道实录

一、执行命令：

# smartctl -a /dev/sda

smartctl version 5.38[x86_64-RedHat-linux-gnu] Copyright (C) 2002-8 Bruce Allen

Home page ishttp://smartmontools.sourceforge.net/

Device: SEAGATE  ST3300657SS      Version: ES64

Serial number: 6SJ175BR

Device type: disk

Transport protocol: SAS

Local Time is: Tue Feb 21 15:23:46 2012 CST

Device supports SMART and is Enabled

Temperature Warning Disabled or NotSupported

SMART Health Status: OK

Current Drive Temperature:     40 C

Drive Trip Temperature:        68 C

Elements in grown defect list: 16

Vendor (Seagate) cache information

Blocks sent to initiator = 1990352432

Blocks received from initiator = 2738959193

Blocks read from cache and sent to initiator = 35795691

Number of read and write commands whose size <= segment size =423851654

Number of read and write commands whose size > segment size = 0

Vendor (Seagate/Hitachi) factoryinformation

number of hours powered up = 7208.00

number of minutes until next internal SMART test = 58

Error counter log:

Errors Corrected by          Total   Correction     Gigabytes    Total

ECC          rereads/    errors  algorithm      processed    uncorrected

fast | delayed   rewrites  corrected invocations   [10^9 bytes]  errors

read:  1029069625       28         0 1029069653   1029069653       1016.060           0

write:         0        0         0         0          0       8091.799           0

verify:  126342        0         0   126342     126342          3.000           0

Non-medium error count:       13

SMART Self-test log

Num Test              Status                 segment  LifeTime LBA_first_err [SK ASC ASQ]

Description                             number   (hours)

# 1 Background long   Failed insegment -->      24    7196        435567298 [0x30x11 0x0]

# 2 Background short  Completed                  16    7194                 - [-   -   -]

# 3 Background short  Completed                  16    7170                 - [-   -   -]

# 4 Background short  Completed                  16    7146                 - [-   -   -]

# 5 Background short  Completed                  16    7122                 - [-   -   -]

# 6 Background long   Completed                  16    7100                 - [-   -   -]

# 7 Background short  Completed                  16    7098                 - [-   -   -]

# 8 Background short  Completed                  16    7074                 - [-   -   -]

# 9 Background short  Completed                  16    7050                 - [-  -    -]

#10 Background long   Completed                  16    7028                 - [-   -   -]

#11 Background short  Completed                  16    7026                 - [-   -   -]

#12 Background short  Completed                  16    7002                 - [-   -   -]

#13 Background short  Completed                  16    6978                 - [-   -   -]

#14 Background short  Completed                  16    6954                 - [-   -   -]

#15 Background long   Completed                  16    6932                 - [-   -   -]

#16 Background short  Completed                  16    6930                 - [-   -   -]

#17 Background short  Completed                  16    6906                 - [-   -   -]

#18  Backgroundshort  Completed                  16    6882                 - [-   -   -]

#19 Background long   Completed                  16    6860                 - [-   -   -]

#20 Background short  Completed                  16    6858                 - [-   -   -]

Long (extended) Self Test duration: 3200seconds [53.3 minutes]

二、查看硬盘分区

#fdisk –lu

Disk/dev/sda: 300.0 GB, 300000000000 bytes

255heads, 63 sectors/track, 36472 cylinders, total 585937500 sectors

Units = sectors of 1 * 512 = 512 bytes

Device Boot      Start         End      Blocks  Id  System

/dev/sda1   *         63      208844      104391  83  Linux

/dev/sda2         208845   585922679   292856917+ 8e  Linux LVM

三、确认坏区位置

# echo 'scale=5;(435567298 - 208845) * 512/4096'|bc    *512是1个Units512字节，/4096是每个块设备是4096字节

54419806.62500 处于第五个扇区，8个扇区1个块，0.125*5=0.625

说明在54419806这个块的第5个扇区有问题，接下来查看下出问题的地方是否有文件使用了

四、查看是否有文件在使用坏区

# debugfs

debugfs 1.39 (29-May-2006)

debugfs: open /dev/mapper/VolGroup00-LogVol02 #打开/dev/mapper/VolGroup00-LogVol02

debugfs:  icheck 54419806                  #Print a listing of the inodes which use the one ormore blocks specified on the command line

Block  Inode number

54419806        50659332

debugfs:  ncheck 50659332               #Take the requested list of inode numbers, and print alisting of pathnames to those inodes.

Inode  Pathname

50659332        /database/jhl_2918_x5/mysql/ibdata1  #找到了有文件处于坏区位置

debugfs: