Hi there!
I was getting alerts from smart telling me that /dev/ada1 has 8 bad sectors, so I ran an extended smart test (smartctl -t long /dev/ada1) in order to find the LBA of the bad sectors. But the result of the extended test came back as follows:
You can see that there are 8 sectors marked as "Offline_Uncorrectable" / "Current_Pending_Sector" but none of the extended offline tests shows "LBA_of_first_error". How is that possible?
I was getting alerts from smart telling me that /dev/ada1 has 8 bad sectors, so I ran an extended smart test (smartctl -t long /dev/ada1) in order to find the LBA of the bad sectors. But the result of the extended test came back as follows:
Code:
[root@Schnigges-NAS] ~# smartctl -a /dev/ada1 ada1% ada1p1% ada1p1.eli% ada1p2% [root@Schnigges-NAS] ~# smartctl -a /dev/ada1 smartctl 6.2 2013-07-26 r3841 [FreeBSD 9.2-RELEASE amd64] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Seagate Barracuda Green (AF) Device Model: ST2000DL003-9VT166 Serial Number: 6YD122ZZ LU WWN Device Id: 5 000c50 03e6e6d84 Firmware Version: CC3C User Capacity: 2,000,398,934,016 bytes [2.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5900 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS T13/1699-D revision 4 SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Wed Jan 29 18:45:40 2014 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 See vendor-specific Attribute list for marginal Attributes. 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: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: ( 612) 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: ( 335) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SCT capabilities: (0x30b7) SCT Status supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 117 099 006 Pre-fail Always - 155900656 3 Spin_Up_Time 0x0003 092 092 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 128 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 072 060 030 Pre-fail Always - 38811203555 9 Power_On_Hours 0x0032 079 079 000 Old_age Always - 18945 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 128 183 Runtime_Bad_Block 0x0032 098 098 000 Old_age Always - 2 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 069 069 000 Old_age Always - 31 188 Command_Timeout 0x0032 100 095 000 Old_age Always - 8590065735 189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 051 044 045 Old_age Always In_the_past 49 (0 66 52 42 0) 191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 73 193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 128 194 Temperature_Celsius 0x0022 049 056 000 Old_age Always - 49 (0 17 0 0 0) 195 Hardware_ECC_Recovered 0x001a 027 003 000 Old_age Always - 155900656 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 8 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 8 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 11849814788612 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 1220083627 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 3814456868 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 Extended offline Completed without error 00% 18930 - # 2 Extended offline Completed without error 00% 18907 - # 3 Extended offline Aborted by host 90% 18637 - # 4 Short offline Completed without error 00% 5583 - # 5 Short offline Completed without error 00% 4874 - # 6 Short offline Completed without error 00% 4140 - # 7 Short offline Completed without error 00% 2963 - # 8 Short offline Completed without error 00% 2267 - # 9 Extended offline Completed without error 00% 854 - #10 Extended offline Completed without error 00% 167 - 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.
You can see that there are 8 sectors marked as "Offline_Uncorrectable" / "Current_Pending_Sector" but none of the extended offline tests shows "LBA_of_first_error". How is that possible?