SMART ошибка жесткого диска, но сектор кажется читаемым

TL; DR: Где мой плохой сектор?

Привет,

У меня есть диск, который не проходит тест SMART. Предположительно, на LBA 1565541432 имеется плохой сектор, но когда я пытаюсь прочитать этот сектор с помощью dd, кажется, что сектор читается нормально. К вашему сведению: я прочитал HOWTO о проблемных блоках и уже успешно «исправлял» поврежденные сектора на жестких дисках, хотя должен признать, что это было много лет назад.

root@machine:~# dd if=/dev/sde bs=512 skip=1565541432 of=/dev/null count=1 1+0 records in 1+0 records out 512 bytes copied, 0.000114903 s, 4.5 MB/s 

Так что, похоже, этот сектор читабелен в конце концов. Кроме того, Current_Pending_Sector равен 0 в состоянии SMART. Я ищу этот предположительно плохой сектор не в том месте?

root@machine:~# smartctl -a /dev/sde smartctl 6.2 2013-07-26 r3841 [x86_64-linux-4.7.0-0.bpo.1-amd64] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org  === START OF INFORMATION SECTION === Model Family: Western Digital Red (AF) Device Model: WDC WD30EFRX-68EUZN0 Serial Number: WD-WMC4Nxxxxxxx LU WWN Device Id: 5 0014ee xxxxxxxxx Firmware Version: 80.00A80 User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) Local Time is: Fri May 25 10:40:10 2018 CEST SMART support is: Available - device has SMART capability. SMART support is: Enabled  === START OF READ SMART DATA SECTION === SMART STATUS RETURN: incomplete response, ATA output registers missing SMART overall-health self-assessment test result: PASSED Warning: This result is based on an Attribute check.  General SMART Values: Offline data collection status: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. Self-test execution status: ( 113) The previous self-test completed having the read element of the test failed. Total time to complete Offline data collection: (41520) 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: ( 417) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x703d) 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 - 25 3 Spin_Up_Time 0x0027 178 178 021 Pre-fail Always - 6058 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 26 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 046 046 000 Old_age Always - 39868 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 - 26 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 25 193 Load_Cycle_Count 0x0032 001 001 000 Old_age Always - 623314 194 Temperature_Celsius 0x0022 107 100 000 Old_age Always - 43 196 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 100 253 000 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 - 1  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: read failure 10% 39868 1565541432 # 2 Extended offline Completed: read failure 10% 39865 1565541432 # 3 Short offline Completed: read failure 10% 39849 1565541432 # 4 Short offline Completed: read failure 10% 39845 1565541432 # 5 Short offline Completed: read failure 10% 39835 1565541432  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.