Eu deixei o smartd verificar meus discos rígidos regularmente. Recentemente eu fui notificado sobre um autoteste curto com falha em um dos meus drivers.
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.16.0-0.bpo.4-amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital RE4
Device Model: WDC WD1003FBYX-01Y7B0
Serial Number: WD-WCAW31677053
LU WWN Device Id: 5 0014ee 25b0c013e
Firmware Version: 01.01V01
User Capacity: 1.000.204.886.016 bytes [1,00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS (minor revision not indicated)
SATA Version is: SATA 2.6, 3.0 Gb/s
Local Time is: Mon Dec 7 13:13:22 2015 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x85) Offline data collection activity
was aborted by an interrupting command from host.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (16680) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 172) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x303f) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 1
3 Spin_Up_Time 0x0027 176 173 021 Pre-fail Always - 4191
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 37
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 070 070 000 Old_age Always - 21991
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 37
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 35
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 1
194 Temperature_Celsius 0x0022 110 088 000 Old_age Always - 37
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0
SMART Error Log Version: 1
No Errors Logged
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% 21981 -
# 2 Extended offline Completed without error 00% 21972 -
# 3 Short offline Completed without error 00% 21963 -
# 4 Extended offline Completed: read failure 90% 21934 4631341
# 5 Short offline Completed: read failure 50% 21933 4631341
# 6 Short offline Completed without error 00% 21909 -
# 7 Short offline Completed without error 00% 21885 -
# 8 Short offline Completed without error 00% 21861 -
# 9 Short offline Completed without error 00% 21837 -
#10 Short offline Completed without error 00% 21813 -
#11 Short offline Completed without error 00% 21789 -
#12 Extended offline Completed without error 00% 21769 -
#13 Short offline Completed without error 00% 21765 -
#14 Short offline Completed without error 00% 21742 -
#15 Short offline Completed without error 00% 21718 -
#16 Short offline Completed without error 00% 21694 -
#17 Short offline Completed without error 00% 21670 -
#18 Short offline Completed without error 00% 21646 -
#19 Short offline Completed without error 00% 21622 -
#20 Extended offline Completed without error 00% 21602 -
#21 Short offline Completed without error 00% 21598 -
2 of 2 failed self-tests are outdated by newer successful extended offline self-test # 2
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
Em seguida, iniciei um autoteste offline estendido e ele também foi interrompido devido a uma falha de leitura no mesmo LBA. Em seguida, removi o disco do mdadm-raid e iniciei um teste destrutivo com badblocks - ele passou três vezes e, surpreendentemente, nenhum erro foi encontrado. Após outro autoteste, a contagem de erros de log diminuiu para 0.
Meu carro está me traindo? (É um Western Digital RE4.) Não reporta Current_Pending_Sector, Offline_Uncorrectable ou Reallocated_Event_Count. Ele relata 1 em Raw_Read_Error_Rate e relatou 1 para Multi_Zone_Error_Rate, mas isso está de volta em 0 agora.
Substituirei a unidade, mas não tenho certeza se devo pensar que um autoteste offline estendido é confiável.
Seu status SMART agora informa setores realocados? Você fez um teste destrutivo, que escreve. Quando a unidade encontra setores que não pode escrever, ela os realoca. Estar atento à alteração deste valor SMART é importante.
Geralmente, o SMART mais frequentemente não vê erros do que erros. Autotestes e setores realocados são os parâmetros mais confiáveis, de modo que o seu impulso provavelmente está "quebrando" (em sua maneira de ser "preso":)).
Tags hard-drive smart bad-blocks