Я позволяю smartd регулярно проверять мои жесткие диски. Недавно я получил уведомление о неудачном коротком самотестировании одного из моих жестких драйверов.
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.
Затем я начал расширенное автономное самотестирование, которое также было прервано из-за сбоя чтения на том же LBA. Затем я удалил диск из mdadm-raid и начал деструктивный тест с плохими блоками - он прошел три раза, и на удивление никаких ошибок не было обнаружено. После очередного самотестирования количество ошибок журнала уменьшилось до 0.
Мой диск меня обманывает? (Это Western Digital RE4.) Он не сообщает о Current_Pending_Sector, Offline_Uncorrectable или Reallocated_Event_Count. Он сообщает 1 для Raw_Read_Error_Rate и 1 для Multi_Zone_Error_Rate, но теперь он снова равен 0.
Я заменю диск, но не уверен, стоит ли переоценивать свое предположение о надежности расширенного автономного самотестирования.
Ваш статус SMART теперь сообщает о перераспределении секторов? Вы сделали деструктивный тест, который пишет. Когда диск обнаруживает сектора, которые он не может записать, он перераспределяет их. Следя за изменение этого значения SMART важно.
Как правило, SMART чаще не видит ошибок, чем создает ошибки. Самотестирование и перераспределение секторов - более надежные параметры, поэтому ваш диск, вероятно, «выходит из строя» (на пути к «поломке» :)).