Hi all.
I got this alert from my NAS via email: "Pool volume_1 state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected".
Looking at my pools, I see this: "volume_1 ONLINE (Unhealthy) | 4.48 TiB (85%) Used | 804.2 GiB Free"
(Note that I'm aware that the pool is low on space and intend to expand it once I've rehoused my server in a case with more drive bays.)
Pool status shows the following:
I'm assuming that da0 is suspect, given that it's the only one showing a non-zero value. I've checked the individual drives' SMART test results in Storage / Disks and none of them show any errors, including da0.
I've checked the short SMART results using smartctl -a for each drive (note that ada0 and ada1 are IronWolfs, hence the large number of read and seek errors):
I'm running a long test on da0 and one other drive (I'm hoping the other drive is OK and will provide reasonable reference data) which are going to take a few hours to complete. I'm looking at this post to try and interpret the data.
Based on the above, is it reasonable to assume that da0 has caused the pool to be flagged as unhealthy because of its read errors? Is this error rate significant enough to require replacing the drive, or could I live with it for a while longer?
Thanks in advance.
I got this alert from my NAS via email: "Pool volume_1 state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected".
Looking at my pools, I see this: "volume_1 ONLINE (Unhealthy) | 4.48 TiB (85%) Used | 804.2 GiB Free"
(Note that I'm aware that the pool is low on space and intend to expand it once I've rehoused my server in a case with more drive bays.)
Pool status shows the following:
Code:
Name Read Write Checksum Status volume_1 0 0 0 ONLINE MIRROR 0 0 0 ONLINE ada0p2 0 0 0 ONLINE ada1p2 0 0 0 ONLINE MIRROR 0 0 0 ONLINE da1p2 0 0 0 ONLINE da0p2 7 0 0 ONLINE
I'm assuming that da0 is suspect, given that it's the only one showing a non-zero value. I've checked the individual drives' SMART test results in Storage / Disks and none of them show any errors, including da0.
I've checked the short SMART results using smartctl -a for each drive (note that ada0 and ada1 are IronWolfs, hence the large number of read and seek errors):
Code:
root@freenas:/ # smartctl -a /dev/ada0 smartctl 7.2 2020-12-30 r5155 [FreeBSD 12.2-RELEASE-p9 amd64] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Seagate IronWolf Device Model: ST3000VN007-2E4166 Serial Number: Z730VG76 LU WWN Device Id: 5 000c50 0b1e623db Firmware Version: SC60 User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5900 rpm Form Factor: 3.5 inches Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2, ACS-3 T13/2161-D revision 3b SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Mon Aug 23 19:01:10 2021 BST 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: (0x82) Offline data collection activity was completed without error. Auto Offline Data Collection: Enabled. Self-test execution status: ( 249) Self-test routine in progress... 90% of test remaining. Total time to complete Offline data collection: ( 107) 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: ( 375) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SCT capabilities: (0x10bd) SCT Status supported. SCT Error Recovery Control 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 108 099 006 Pre-fail Always - 17753232 3 Spin_Up_Time 0x0003 093 093 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 50 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 082 060 030 Pre-fail Always - 174467637 9 Power_On_Hours 0x0032 070 070 000 Old_age Always - 26411 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 50 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 189 High_Fly_Writes 0x003a 040 040 000 Old_age Always - 60 190 Airflow_Temperature_Cel 0x0022 058 054 045 Old_age Always - 42 (Min/Max 37/45) 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 - 24 193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 116 194 Temperature_Celsius 0x0022 042 046 000 Old_age Always - 42 (0 22 0 0 0) 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 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 Self-test routine in progress 90% 26411 - # 2 Short offline Completed without error 00% 26392 - # 3 Short offline Completed without error 00% 26224 - # 4 Short offline Completed without error 00% 26056 - # 5 Short offline Completed without error 00% 25888 - # 6 Short offline Completed without error 00% 25720 - # 7 Short offline Completed without error 00% 25552 - # 8 Short offline Completed without error 00% 25384 - # 9 Short offline Completed without error 00% 25216 - #10 Short offline Completed without error 00% 25048 - #11 Short offline Completed without error 00% 24880 - #12 Short offline Completed without error 00% 24712 - #13 Short offline Completed without error 00% 24544 - #14 Short offline Completed without error 00% 24376 - #15 Short offline Completed without error 00% 24208 - #16 Short offline Completed without error 00% 24040 - #17 Short offline Completed without error 00% 23872 - #18 Short offline Completed without error 00% 23704 - #19 Short offline Completed without error 00% 23536 - #20 Short offline Completed without error 00% 23368 - #21 Short offline Completed without error 00% 23200 - 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.
Code:
root@freenas:/ # smartctl -a /dev/ada1 smartctl 7.2 2020-12-30 r5155 [FreeBSD 12.2-RELEASE-p9 amd64] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Seagate IronWolf Device Model: ST3000VN007-2E4166 Serial Number: Z730QGEF LU WWN Device Id: 5 000c50 0b1e44858 Firmware Version: SC60 User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5900 rpm Form Factor: 3.5 inches Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2, ACS-3 T13/2161-D revision 3b SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Mon Aug 23 19:01:14 2021 BST 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: (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: ( 97) 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: ( 382) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SCT capabilities: (0x10bd) SCT Status supported. SCT Error Recovery Control 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 118 099 006 Pre-fail Always - 187862440 3 Spin_Up_Time 0x0003 093 093 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 50 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 081 060 030 Pre-fail Always - 166261646 9 Power_On_Hours 0x0032 070 070 000 Old_age Always - 26411 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 50 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 189 High_Fly_Writes 0x003a 058 058 000 Old_age Always - 42 190 Airflow_Temperature_Cel 0x0022 062 056 045 Old_age Always - 38 (Min/Max 36/44) 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 - 24 193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 117 194 Temperature_Celsius 0x0022 038 044 000 Old_age Always - 38 (0 22 0 0 0) 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 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% 26391 - # 2 Short offline Completed without error 00% 26223 - # 3 Short offline Completed without error 00% 26055 - # 4 Short offline Completed without error 00% 25887 - # 5 Short offline Completed without error 00% 25719 - # 6 Short offline Completed without error 00% 25551 - # 7 Short offline Completed without error 00% 25384 - # 8 Short offline Completed without error 00% 25215 - # 9 Short offline Completed without error 00% 25047 - #10 Short offline Completed without error 00% 24879 - #11 Short offline Completed without error 00% 24711 - #12 Short offline Completed without error 00% 24543 - #13 Short offline Completed without error 00% 24376 - #14 Short offline Completed without error 00% 24208 - #15 Short offline Completed without error 00% 24039 - #16 Short offline Completed without error 00% 23871 - #17 Short offline Completed without error 00% 23703 - #18 Short offline Completed without error 00% 23535 - #19 Short offline Completed without error 00% 23367 - #20 Short offline Completed without error 00% 23199 - #21 Short offline Completed without error 00% 23031 - 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.
Code:
root@freenas:/ # smartctl -a /dev/da0 smartctl 7.2 2020-12-30 r5155 [FreeBSD 12.2-RELEASE-p9 amd64] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Red Device Model: WDC WD30EFRX-68EUZN0 Serial Number: WD-WCC4N0HDZP4C LU WWN Device Id: 5 0014ee 264334f6f Firmware Version: 82.00A82 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: 6.0 Gb/s) Local Time is: Mon Aug 23 19:01:19 2021 BST 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: ( 249) Self-test routine in progress... 90% of test remaining. Total time to complete Offline data collection: (37920) 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: ( 380) 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 - 57 3 Spin_Up_Time 0x0027 183 182 021 Pre-fail Always - 5841 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1095 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 053 053 000 Old_age Always - 34820 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 814 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 35 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 1751 194 Temperature_Celsius 0x0022 114 109 000 Old_age Always - 36 196 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 100 253 000 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% 8408 - # 2 Short offline Completed without error 00% 7666 - # 3 Short offline Completed without error 00% 6947 - # 4 Short offline Completed without error 00% 6204 - # 5 Short offline Completed without error 00% 5485 - # 6 Short offline Completed without error 00% 4743 - # 7 Short offline Completed without error 00% 4075 - # 8 Short offline Completed without error 00% 3339 - # 9 Short offline Completed without error 00% 2597 - #10 Short offline Completed without error 00% 1935 - #11 Short offline Completed without error 00% 1298 - #12 Short offline Completed without error 00% 672 - 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.
Code:
root@freenas:/ # smartctl -a /dev/da1 smartctl 7.2 2020-12-30 r5155 [FreeBSD 12.2-RELEASE-p9 amd64] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Red Device Model: WDC WD30EFRX-68EUZN0 Serial Number: WD-WCC4N4CJTLD7 LU WWN Device Id: 5 0014ee 20edde9de Firmware Version: 82.00A82 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: 6.0 Gb/s) Local Time is: Mon Aug 23 19:01:20 2021 BST 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: (41460) 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: ( 416) 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 - 0 3 Spin_Up_Time 0x0027 182 181 021 Pre-fail Always - 5866 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1095 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 053 053 000 Old_age Always - 34821 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 814 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 35 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 1674 194 Temperature_Celsius 0x0022 115 109 000 Old_age Always - 35 196 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 100 253 000 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% 8410 - # 2 Short offline Completed without error 00% 7667 - # 3 Short offline Completed without error 00% 6948 - # 4 Short offline Completed without error 00% 6205 - # 5 Short offline Completed without error 00% 5487 - # 6 Short offline Completed without error 00% 4744 - # 7 Short offline Completed without error 00% 4076 - # 8 Short offline Completed without error 00% 3341 - # 9 Short offline Completed without error 00% 2598 - #10 Short offline Completed without error 00% 1936 - #11 Short offline Completed without error 00% 1299 - #12 Short offline Completed without error 00% 673 - 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:/ #
I'm running a long test on da0 and one other drive (I'm hoping the other drive is OK and will provide reasonable reference data) which are going to take a few hours to complete. I'm looking at this post to try and interpret the data.
Based on the above, is it reasonable to assume that da0 has caused the pool to be flagged as unhealthy because of its read errors? Is this error rate significant enough to require replacing the drive, or could I live with it for a while longer?
Thanks in advance.
Last edited: