Diagnostic smart d'un disque

Activation

Vous pouvez vérifier si smart est activé avec :

smartctl -i /dev/sda

Vous devriez avoir un retour terminant par :

SMART support is: Available - device has SMART capability.
SMART support is: Enabled

si jamais le smart de votre disque est disabled, essayez de l'activer avec

smartctl -s on /dev/sda

Généralités

Pour vérifier l'état global du disque utilisez l'option -H. Si vous obtenez PASSED, tant mieux, sinon, préparez vous à sauvegarder d'urgence vos données !

~# smartctl -H /dev/sda
smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

Pour vérifier la présence d'erreur dans le log smart :

~# smartctl -l error /dev/sda
smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF READ SMART DATA SECTION ===
SMART Error Log Version: 1
No Errors Logged

self test

Commencez par vérifier les tests supportés par votre disque

~# smartctl --capabilities /dev/sda
smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF READ SMART DATA SECTION ===
General SMART Values:
Offline data collection status:  (0x82) Offline data collection activity
                                        was completed without error.
                                        Auto Offline Data Collection: Enabled.
Self-test execution status:      ( 244) Self-test routine in progress...
                                        40% of test remaining.
Total time to complete Offline 
data collection:                 ( 600) seconds.
Offline data collection
capabilities:                    (0x7b) SMART execute Offline immediate.
                                        Auto Offline data collection on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        Offline surface scan supported.
                                        Self-test supported.
                                        Conveyance Self-test supported.
                                        Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                        power-saving mode.
                                        Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                                        General Purpose Logging supported.
Short self-test routine 
recommended polling time:        (   1) minutes.
Extended self-test routine
recommended polling time:        (  84) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x103f) SCT Status supported.
                                        SCT Error Recovery Control supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

Ici, le disque supporte le short self-test (d'une durée d'environs 1 minute), l'extended self-test (d'une durée d'environs 84 minutes) et le Conveyance self-test (d'une durée d'environs 2 minutes).