Primero vamos a instalarlo:

# yum install smartmontools

Luego que se instala procederemos a hacer los testeos:
Listamos los discos/particiones solo con el fin de obtener los nombres de nuestras unidades

# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda2             897G  380G  471G  45% /
/dev/sda5             2.0G  383M  1.5G  21% /tmp
/dev/sda1              99M   32M   62M  34% /boot
tmpfs                 3.9G     0  3.9G   0% /dev/shm
/dev/sdb1             917G  707G  164G  82% /hd2

Aqui vemos que nuestros 2 discos son /dev/sda y /dev/sdb, esos nombres utilizaremos como ejemplos

1) Detalle de la info de los discos:

# smartctl -i /dev/sda
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.18-498.el5.lve0.8.80] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Device Model:     MB1000EBNCF
Serial Number:    WCAW30756532
LU WWN Device Id: 5 0014ee 25ac27419
Firmware Version: HPG0
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Size:      512 bytes logical/physical
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  ATA-8-ACS revision 6
Local Time is:    Mon Apr  6 17:06:32 2015 ART
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

2) Un testeo solo informativo:

# smartctl -H /dev/sda
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.18-498.el5.lve0.8.80] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

Este resultado nos muestra que todo esta OK.

IMPORTANTE: Como se mostraría un error a tener muy en cuenta:

# smartctl -H /dev/sda
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.18-498.el5.lve0.8.80] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
Failed Attributes:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate     0x002f   001   001   051    Pre-fail  Always   FAILING_NOW 330223

Increíblemente el detalle muestra que el disco puede tener un fallo en las próximas 24 hs, por lo que hay que realizar una inmedita copia del contenido.

3) Testeo a fondo, el cual detallará cualquier tipo de error o falla en los discos:

# smartctl -t long /dev/sda
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-504.1.3.el6.x86_64] (local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Sending command: "Execute SMART Extended self-test routine immediately in off-line mode".
Drive command "Execute SMART Extended self-test routine immediately in off-line mode" successful.
Testing has begun.
Please wait 121 minutes for test to complete.
Test will complete after Mon Apr  6 19:44:02 2015
Use smartctl -X to abort test.

4) Testeo rápido:

<!-- wp:paragraph -->
<p># smartctl -t short /dev/sda<br>smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-504.1.3.el6.x86_64] (local build)<br>Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===<br>Sending command: "Execute SMART Short self-test routine immediately in off-line mode".<br>Drive command "Execute SMART Short self-test routine immediately in off-line mode" successful.<br>Testing has begun.<br>Please wait 2 minutes for test to complete.<br>Test will complete after Mon Apr  6 17:48:38 2015</p>
<!-- /wp:paragraph -->

Como vemos aqui, los testeos «short y long» son offline y deberemos verificar el resultado con:

# smartctl -l selftest /dev/sda
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-504.1.3.el6.x86_64] (local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%      9627  

Una herramienta muy útil ante cualquier tipo de aviso o sospecha de daño. A tenerlo en cuenta!

La entrada Terminal: Controlando la salud e integridad de nuestros discos con smartctl se publicó primero en SoyAdmin.com.