Diagnostica di un Hard Disk con smartctl

Se si ricevono degli errori da smartd, si può indagare se effettivamente ci sono problemi.

Visulizzazione del log degli errori

Se un hdd non ha problemi, il log sarà certamente vuoto:

sudo smartctl -l error /dev/sda

smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

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

Questo invece mostra un errore di "Unrecovarable Sector"

smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Error Log Version: 1
ATA Error Count: 6 (device log contains only the most recent five errors)
...
Error 6 occurred at disk power-on lifetime: 10662 hours (444 days + 6 hours)
  When the command that caused the error occurred, the device was active or idle
.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 ba 32 dd 37 e0  Error: UNC 186 sectors at LBA = 0x0037dd32 = 3661106
...

Test Veloce

Verifica danni evidenti all'elettronica e meccanica.

sudo smartctl -t short /dev/sdb

• Monitorarne l'esecuzione

watch sudo smartctl -l selftest /dev/sdb

smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is 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%     10936         -

Test lungo

sudo smartctl -t long /dev/sdb

Riferimenti

• Bad block HOWTO for smartmontools

• smartmontools FAQ: Smartd is warning that my ATA disk has unreadable or uncorrectable or pending sectors. What's going on?

• Nigel Smith's Blog: Smartmontools and fixing Unreadable Disk Sectors