I'm upgrading my zfs pool from 4x 2tb drives to 4x second-hand 3tb drives. The first 3 resilvered without errors but when the fourth drive is added freenas issues a critical alert "Device: /dev/ada0, 6 Currently unreadable (pending) sectors".
I've followed guides (here, here and here) telling me to run a extended test to find the relevant sectors then write directly to them with dd to force the hdd to reallocate those sectors. All good except after running an extended smart test the result is "Completed without error" and LBA_of_first_error is blank so I don't know which sectors to write to.
How can I fix the smart error and is it safe to use the drive, at least in the short-term?
Here's the output of smartctl -q noserial -a /dev/ada0 after running smartctl -t long /dev/ada0 and waiting for the test to finish. The drive in question is ada0 because I've removed all the other drives in the pool.
Thanks in advance :)
I've followed guides (here, here and here) telling me to run a extended test to find the relevant sectors then write directly to them with dd to force the hdd to reallocate those sectors. All good except after running an extended smart test the result is "Completed without error" and LBA_of_first_error is blank so I don't know which sectors to write to.
How can I fix the smart error and is it safe to use the drive, at least in the short-term?
Here's the output of smartctl -q noserial -a /dev/ada0 after running smartctl -t long /dev/ada0 and waiting for the test to finish. The drive in question is ada0 because I've removed all the other drives in the pool.
Thanks in advance :)
Code:
smartctl 6.5 2016-05-07 r4318 [FreeBSD 10.3-STABLE amd64] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Red Device Model: WDC WD30EFRX-xxxxxxx Firmware Version: 80.00A80 User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical 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: Wed Aug 9 06:50:25 2017 AEST 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: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. 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: (40080) 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: ( 402) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x70bd) 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 - 1060 3 Spin_Up_Time 0x0027 179 176 021 Pre-fail Always - 6033 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 85 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 049 049 000 Old_age Always - 37402 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 - 85 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 63 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 21 194 Temperature_Celsius 0x0022 123 110 000 Old_age Always - 27 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 6 198 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 - 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 Extended offline Completed without error 00% 37398 - 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. [root@freenas] ~# diskinfo -v /dev/ada0 /dev/ada0 512 # sectorsize 3000592982016 # mediasize in bytes (2.7T) 5860533168 # mediasize in sectors 4096 # stripesize 0 # stripeoffset 5814021 # Cylinders according to firmware. 16 # Heads according to firmware. 63 # Sectors according to firmware. WD-WMC1T0620318 # Disk ident.
