Cant import pool I/O error. Am I goosed?

TrueNAS General
,
1

Hi,
I have a TrueNAS Scale build with 6*4tb raidz1 array. Last night 1 drive failed and when I came to replace it noticed that the pool was “exported”
I have tried importing the pool through SSH but constantly receive I/O errors.
I have attempted an import with the original disks. With faulted Disk removed and with a new Disk replacing the faulted one. All resulting in an I/O error. I did some smartcl reads on my drives which I have attached and noticed some funky stuff but I don’t understand it all.

If anyone can help that would be greatly appreciated. I had planned to replace all the drives and now I’m left with 20tb of lost data and 6*8tb drives sitting around until I can rule out recovery as a possibility.

Thanks for your help!

admin@truenas[~]$ sudo zpool import -f -F -D -R /mnt MegaDrive
cannot import 'MegaDrive': no such pool available
admin@truenas[~]$ smartctl -a /dev/sdb
zsh: command not found: smartctl
admin@truenas[~]$ sudo smartctl -a /dev/sdb
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.44-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate IronWolf
Device Model:     ST4000VN008-2DR166
Serial Number:    ZDHANM4J
LU WWN Device Id: 5 000c50 0e3d5c93c
Firmware Version: SC60
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5980 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database 7.3/5660
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Mar  5 19:33:43 2025 GMT
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:                (  581) 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:        ( 627) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x50bd) 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   084   064   044    Pre-fail  Always       -       243185092
  3 Spin_Up_Time            0x0003   094   093   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   098   098   020    Old_age   Always       -       2154
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   093   060   045    Pre-fail  Always       -       1858762102
  9 Power_On_Hours          0x0032   077   077   000    Old_age   Always       -       20666 (200 12 0)
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   099   099   020    Old_age   Always       -       1964
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   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   071   057   040    Old_age   Always       -       29 (Min/Max 29/29)
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       -       54
193 Load_Cycle_Count        0x0032   099   099   000    Old_age   Always       -       2221
194 Temperature_Celsius     0x0022   029   043   000    Old_age   Always       -       29 (0 14 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
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       20653h+10m+53.440s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       57672976066
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       178318324551

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%     20595         -
# 2  Extended offline    Completed without error       00%     20582         -
# 3  Short offline       Completed without error       00%     20427         -
# 4  Short offline       Completed without error       00%     20259         -
# 5  Short offline       Completed without error       00%     20091         -
# 6  Short offline       Completed without error       00%     19922         -
# 7  Extended offline    Completed without error       00%     19912         -
# 8  Extended offline    Completed without error       00%     19165         -
# 9  Extended offline    Completed without error       00%     18421         -
#10  Extended offline    Completed without error       00%     17701         -
#11  Extended offline    Completed without error       00%     16958         -
#12  Extended offline    Completed without error       00%     16326         -
#13  Extended offline    Completed without error       00%     15493         -
#14  Extended offline    Completed without error       00%     14792         -
#15  Extended offline    Completed without error       00%     14543         -
#16  Extended offline    Completed without error       00%     13799         -
#17  Extended offline    Completed without error       00%     13083         -
#18  Extended offline    Completed without error       00%     12337         -
#19  Extended offline    Completed without error       00%     11643         -
#20  Extended offline    Completed without error       00%     10895         -
#21  Extended offline    Completed without error       00%     10151         -

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.

The above only provides legacy SMART information - try 'smartctl -x' for more

admin@truenas[~]$ sudo smartctl -a /dev/sdc
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.44-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     ST4000VN006-3CW104
Serial Number:    ZW608HDD
LU WWN Device Id: 5 000c50 0e5a2f43d
Firmware Version: SC60
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database 7.3/5660
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Mar  5 19:35:58 2025 GMT
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:                (    0) seconds.
Offline data collection
capabilities:                    (0x73) SMART execute Offline immediate.
                                        Auto Offline data collection on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        No 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:        ( 455) minutes.
Conveyance self-test routine
recommended polling time:        (   2) 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: 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   079   064   006    Pre-fail  Always       -       72369220
  3 Spin_Up_Time            0x0003   096   096   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   096   096   020    Old_age   Always       -       4315
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   084   060   045    Pre-fail  Always       -       13771233245
  9 Power_On_Hours          0x0032   081   081   000    Old_age   Always       -       16703
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   096   096   020    Old_age   Always       -       4315
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
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   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   068   054   040    Old_age   Always       -       32 (Min/Max 32/32)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   098   098   000    Old_age   Always       -       4301
193 Load_Cycle_Count        0x0032   098   098   000    Old_age   Always       -       4591
194 Temperature_Celsius     0x0022   032   046   000    Old_age   Always       -       32 (0 19 0 0 0)
195 Hardware_ECC_Recovered  0x001a   079   064   000    Old_age   Always       -       72369220
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
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       16670 (8 4 0)
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       44242594294
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       1289033545726

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%     16633         -
# 2  Extended offline    Completed without error       00%     16620         -
# 3  Short offline       Completed without error       00%     16465         -
# 4  Short offline       Completed without error       00%     16297         -
# 5  Short offline       Completed without error       00%     16129         -
# 6  Short offline       Completed without error       00%     15961         -
# 7  Extended offline    Completed without error       00%     15951         -
# 8  Extended offline    Completed without error       00%     15203         -
# 9  Extended offline    Completed without error       00%     14459         -
#10  Extended offline    Completed without error       00%     13739         -
#11  Extended offline    Completed without error       00%     12996         -
#12  Extended offline    Completed without error       00%     12431         -
#13  Extended offline    Completed without error       00%     11531         -
#14  Extended offline    Completed without error       00%     10830         -
#15  Extended offline    Completed without error       00%     10581         -
#16  Extended offline    Completed without error       00%      9837         -
#17  Extended offline    Completed without error       00%      9122         -
#18  Extended offline    Completed without error       00%      8377         -
#19  Extended offline    Completed without error       00%      7682         -
#20  Extended offline    Completed without error       00%      6933         -
#21  Extended offline    Completed without error       00%      6189         -

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.

The above only provides legacy SMART information - try 'smartctl -x' for more

admin@truenas[~]$ sudo smartctl -a /dev/sdd
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.44-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate IronWolf Pro
Device Model:     ST4000NE0025-2EW107
Serial Number:    ZC14TX3S
LU WWN Device Id: 5 000c50 0af6715c9
Firmware Version: EN02
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database 7.3/5660
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Mar  5 19:36:55 2025 GMT
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:                (  567) 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:        ( 360) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x50bd) 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   100   064   044    Pre-fail  Always       -       1303976
  3 Spin_Up_Time            0x0003   091   090   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   093   093   020    Old_age   Always       -       7475
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   089   060   045    Pre-fail  Always       -       720320838
  9 Power_On_Hours          0x0032   048   048   000    Old_age   Always       -       45957
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   094   094   020    Old_age   Always       -       7147
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   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   070   054   040    Old_age   Always       -       30 (Min/Max 30/30)
191 G-Sense_Error_Rate      0x0032   076   076   000    Old_age   Always       -       49835
192 Power-Off_Retract_Count 0x0032   099   099   000    Old_age   Always       -       2220
193 Load_Cycle_Count        0x0032   096   096   000    Old_age   Always       -       9071
194 Temperature_Celsius     0x0022   030   046   000    Old_age   Always       -       30 (0 2 0 0 0)
195 Hardware_ECC_Recovered  0x001a   100   001   000    Old_age   Always       -       1303976
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
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       45822h+35m+08.681s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       233517932178
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       552170962708

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%     45886         -
# 2  Extended offline    Completed without error       00%     45870         -
# 3  Short offline       Completed without error       00%     45718         -
# 4  Short offline       Completed without error       00%     45550         -
# 5  Short offline       Completed without error       00%     45382         -
# 6  Short offline       Completed without error       00%     45214         -
# 7  Extended offline    Completed without error       00%     45201         -
# 8  Extended offline    Interrupted (host reset)      00%     44447         -
# 9  Extended offline    Interrupted (host reset)      00%     43702         -
#10  Extended offline    Interrupted (host reset)      00%     42982         -
#11  Extended offline    Completed without error       00%     42247         -
#12  Extended offline    Interrupted (host reset)      00%     41529         -
#13  Extended offline    Completed without error       00%     40783         -
#14  Extended offline    Completed without error       00%     40082         -
#15  Extended offline    Completed without error       00%     39833         -
#16  Extended offline    Completed without error       00%     39088         -
#17  Extended offline    Completed without error       00%     38371         -
#18  Extended offline    Completed without error       00%     37625         -
#19  Extended offline    Completed without error       00%     36929         -
#20  Extended offline    Completed without error       00%     36184         -
#21  Extended offline    Completed without error       00%     35440         -

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.

The above only provides legacy SMART information - try 'smartctl -x' for more

admin@truenas[~]$ sudo smartctl -a /dev/sde
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.44-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate IronWolf Pro
Device Model:     ST4000NE001-2MA101
Serial Number:    WS258TWX
LU WWN Device Id: 5 000c50 0f7d32c76
Firmware Version: EN01
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database 7.3/5660
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Mar  5 19:37:05 2025 GMT
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:                (  567) 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:        ( 366) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x50bd) 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   083   064   044    Pre-fail  Always       -       206496712
  3 Spin_Up_Time            0x0003   092   092   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1404
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   079   060   045    Pre-fail  Always       -       86796627
  9 Power_On_Hours          0x0032   099   099   000    Old_age   Always       -       967
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   099   099   020    Old_age   Always       -       1404
 18 Head_Health             0x000b   100   100   050    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   069   059   040    Old_age   Always       -       31 (Min/Max 31/31)
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       1396
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       1522
194 Temperature_Celsius     0x0022   031   041   000    Old_age   Always       -       31 (0 18 0 0 0)
195 Hardware_ECC_Recovered  0x001a   083   064   000    Old_age   Always       -       206496712
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
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       924h+17m+20.312s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       10561234696
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       13085525122

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%       896         -
# 2  Extended offline    Completed without error       00%       879         -
# 3  Short offline       Completed without error       00%       728         -
# 4  Short offline       Completed without error       00%       560         -
# 5  Short offline       Completed without error       00%       392         -
# 6  Short offline       Completed without error       00%       224         -
# 7  Extended offline    Completed without error       00%       210         -

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.

The above only provides legacy SMART information - try 'smartctl -x' for more

admin@truenas[~]$ sudo smartctl -a /dev/sdf
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.44-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     ST4000VN006-3CW104
Serial Number:    ZW607XYA
LU WWN Device Id: 5 000c50 0e5a1c4bf
Firmware Version: SC60
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database 7.3/5660
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Mar  5 19:37:10 2025 GMT
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:                (    0) seconds.
Offline data collection
capabilities:                    (0x73) SMART execute Offline immediate.
                                        Auto Offline data collection on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        No 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:        ( 463) minutes.
Conveyance self-test routine
recommended polling time:        (   2) 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: 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   083   064   006    Pre-fail  Always       -       192929868
  3 Spin_Up_Time            0x0003   096   096   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   095   095   020    Old_age   Always       -       5632
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   089   060   045    Pre-fail  Always       -       5153734269
  9 Power_On_Hours          0x0032   081   081   000    Old_age   Always       -       16702
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   095   095   020    Old_age   Always       -       5632
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
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   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   067   054   040    Old_age   Always       -       33 (Min/Max 32/33)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   098   098   000    Old_age   Always       -       5618
193 Load_Cycle_Count        0x0032   098   098   000    Old_age   Always       -       5907
194 Temperature_Celsius     0x0022   033   046   000    Old_age   Always       -       33 (0 19 0 0 0)
195 Hardware_ECC_Recovered  0x001a   083   064   000    Old_age   Always       -       192929868
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
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       16668 (21 169 0)
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       44227070158
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       811292454060

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%     16632         -
# 2  Extended offline    Completed without error       00%     16619         -
# 3  Short offline       Completed without error       00%     16464         -
# 4  Short offline       Completed without error       00%     16296         -
# 5  Short offline       Completed without error       00%     16128         -
# 6  Short offline       Completed without error       00%     15960         -
# 7  Extended offline    Completed without error       00%     15951         -
# 8  Extended offline    Completed without error       00%     15203         -
# 9  Extended offline    Completed without error       00%     14458         -
#10  Extended offline    Completed without error       00%     13738         -
#11  Extended offline    Completed without error       00%     12995         -
#12  Extended offline    Completed without error       00%     12433         -
#13  Extended offline    Completed without error       00%     11531         -
#14  Extended offline    Completed without error       00%     10829         -
#15  Extended offline    Completed without error       00%     10581         -
#16  Extended offline    Completed without error       00%      9836         -
#17  Extended offline    Completed without error       00%      9121         -
#18  Extended offline    Completed without error       00%      8375         -
#19  Extended offline    Completed without error       00%      7681         -
#20  Extended offline    Completed without error       00%      6932         -
#21  Extended offline    Completed without error       00%      6189         -

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.

The above only provides legacy SMART information - try 'smartctl -x' for more
2

I appreciate the frustration, but please STOP taking any further actions until you receive expert advice on how to proceed, because if the “failed” drive hadn’t actually failed but had dropped out for a different reason, swapping it out might have reduced the chances of bringing the pool back to life.

The first step seems to me to be to verify whether the “failed” drive has actually failed. If you reinstall it, is it visible in Linux, and what does smartctl -x tell you about the drive?

Once we know whether we can use the old drive to assist with pool recovery or if it is truly dead, then we can proceed to try to work out how to bring the pool back online again in a degraded state so that you can either get the data off or recover redundancy by resilvering.

3

Hi thanks,
Here is the report from sdb the drive that TrueNAS showed as faulted:

admin@truenas[~]$ sudo smartctl -x /dev/sdb
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.44-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate IronWolf
Device Model:     ST4000VN008-2DR166
Serial Number:    ZDHANM4J
LU WWN Device Id: 5 000c50 0e3d5c93c
Firmware Version: SC60
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5980 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database 7.3/5660
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Mar  5 22:50:46 2025 GMT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM feature is:   Disabled
Rd look-ahead is: Enabled
Write cache is:   Enabled
DSN feature is:   Unavailable
ATA Security is:  Disabled, frozen [SEC2]
Wt Cache Reorder: 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:                (  581) 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:        ( 627) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x50bd) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     POSR--   084   064   044    -    243273118
  3 Spin_Up_Time            PO----   094   093   000    -    0
  4 Start_Stop_Count        -O--CK   098   098   020    -    2154
  5 Reallocated_Sector_Ct   PO--CK   100   100   010    -    0
  7 Seek_Error_Rate         POSR--   093   060   045    -    1858767044
  9 Power_On_Hours          -O--CK   077   077   000    -    20669 (105 87 0)
 10 Spin_Retry_Count        PO--C-   100   100   097    -    0
 12 Power_Cycle_Count       -O--CK   099   099   020    -    1964
184 End-to-End_Error        -O--CK   100   100   099    -    0
187 Reported_Uncorrect      -O--CK   100   100   000    -    0
188 Command_Timeout         -O--CK   100   100   000    -    0
189 High_Fly_Writes         -O-RCK   100   100   000    -    0
190 Airflow_Temperature_Cel -O---K   071   057   040    -    29 (Min/Max 29/29)
191 G-Sense_Error_Rate      -O--CK   100   100   000    -    0
192 Power-Off_Retract_Count -O--CK   100   100   000    -    54
193 Load_Cycle_Count        -O--CK   099   099   000    -    2221
194 Temperature_Celsius     -O---K   029   043   000    -    29 (0 14 0 0 0)
197 Current_Pending_Sector  -O--C-   100   100   000    -    0
198 Offline_Uncorrectable   ----C-   100   100   000    -    0
199 UDMA_CRC_Error_Count    -OSRCK   200   200   000    -    0
240 Head_Flying_Hours       ------   100   253   000    -    20656h+27m+57.771s
241 Total_LBAs_Written      ------   100   253   000    -    57672976450
242 Total_LBAs_Read         ------   100   253   000    -    178318412193
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x02           SL  R/O      5  Comprehensive SMART error log
0x03       GPL     R/O      5  Ext. Comprehensive SMART error log
0x04       GPL,SL  R/O      8  Device Statistics log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x09           SL  R/W      1  Selective self-test log
0x10       GPL     R/O      1  NCQ Command Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x13       GPL     R/O      1  SATA NCQ Send and Receive log
0x15       GPL     R/W      1  Rebuild Assist log
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x24       GPL     R/O    512  Current Device Internal Status Data log
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xa1       GPL,SL  VS      24  Device vendor specific log
0xa2       GPL     VS    8160  Device vendor specific log
0xa6       GPL     VS     192  Device vendor specific log
0xa8-0xa9  GPL,SL  VS     136  Device vendor specific log
0xab       GPL     VS       1  Device vendor specific log
0xb0       GPL     VS    9048  Device vendor specific log
0xbe-0xbf  GPL     VS   65535  Device vendor specific log
0xc1       GPL,SL  VS      16  Device vendor specific log
0xd1       GPL     VS     136  Device vendor specific log
0xd2       GPL     VS   10000  Device vendor specific log
0xd3       GPL     VS    1920  Device vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (5 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%     20595         -
# 2  Extended offline    Completed without error       00%     20582         -
# 3  Short offline       Completed without error       00%     20427         -
# 4  Short offline       Completed without error       00%     20259         -
# 5  Short offline       Completed without error       00%     20091         -
# 6  Short offline       Completed without error       00%     19922         -
# 7  Extended offline    Completed without error       00%     19912         -
# 8  Extended offline    Completed without error       00%     19165         -
# 9  Extended offline    Completed without error       00%     18421         -
#10  Extended offline    Completed without error       00%     17701         -
#11  Extended offline    Completed without error       00%     16958         -
#12  Extended offline    Completed without error       00%     16326         -
#13  Extended offline    Completed without error       00%     15493         -
#14  Extended offline    Completed without error       00%     14792         -
#15  Extended offline    Completed without error       00%     14543         -
#16  Extended offline    Completed without error       00%     13799         -
#17  Extended offline    Completed without error       00%     13083         -
#18  Extended offline    Completed without error       00%     12337         -
#19  Extended offline    Completed without error       00%     11643         -

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.

SCT Status Version:                  3
SCT Version (vendor specific):       522 (0x020a)
Device State:                        Active (0)
Current Temperature:                    29 Celsius
Power Cycle Min/Max Temperature:     29/29 Celsius
Lifetime    Min/Max Temperature:     14/42 Celsius
Under/Over Temperature Limit Count:   0/4

SCT Temperature History Version:     2
Temperature Sampling Period:         3 minutes
Temperature Logging Interval:        59 minutes
Min/Max recommended Temperature:      0/ 0 Celsius
Min/Max Temperature Limit:            0/ 0 Celsius
Temperature History Size (Index):    128 (27)

Index    Estimated Time   Temperature Celsius
  28    2025-02-28 17:19    34  ***************
 ...    ..( 15 skipped).    ..  ***************
  44    2025-03-01 09:03    34  ***************
  45    2025-03-01 10:02    35  ****************
  46    2025-03-01 11:01    34  ***************
  47    2025-03-01 12:00    34  ***************
  48    2025-03-01 12:59    36  *****************
  49    2025-03-01 13:58    39  ********************
  50    2025-03-01 14:57    38  *******************
 ...    ..(  2 skipped).    ..  *******************
  53    2025-03-01 17:54    38  *******************
  54    2025-03-01 18:53    37  ******************
  55    2025-03-01 19:52    37  ******************
  56    2025-03-01 20:51    37  ******************
  57    2025-03-01 21:50    36  *****************
  58    2025-03-01 22:49    36  *****************
  59    2025-03-01 23:48    35  ****************
  60    2025-03-02 00:47    36  *****************
  61    2025-03-02 01:46    35  ****************
  62    2025-03-02 02:45    35  ****************
  63    2025-03-02 03:44    35  ****************
  64    2025-03-02 04:43    34  ***************
  65    2025-03-02 05:42    34  ***************
  66    2025-03-02 06:41    34  ***************
  67    2025-03-02 07:40    33  **************
  68    2025-03-02 08:39    34  ***************
  69    2025-03-02 09:38    33  **************
  70    2025-03-02 10:37    34  ***************
  71    2025-03-02 11:36    34  ***************
  72    2025-03-02 12:35    33  **************
 ...    ..(  2 skipped).    ..  **************
  75    2025-03-02 15:32    33  **************
  76    2025-03-02 16:31    34  ***************
  77    2025-03-02 17:30    34  ***************
  78    2025-03-02 18:29    34  ***************
  79    2025-03-02 19:28    33  **************
  80    2025-03-02 20:27    35  ****************
  81    2025-03-02 21:26    34  ***************
  82    2025-03-02 22:25    33  **************
  83    2025-03-02 23:24    35  ****************
  84    2025-03-03 00:23    34  ***************
  85    2025-03-03 01:22    33  **************
 ...    ..(  7 skipped).    ..  **************
  93    2025-03-03 09:14    33  **************
  94    2025-03-03 10:13    35  ****************
  95    2025-03-03 11:12    35  ****************
  96    2025-03-03 12:11    37  ******************
  97    2025-03-03 13:10    39  ********************
  98    2025-03-03 14:09    37  ******************
  99    2025-03-03 15:08    35  ****************
 100    2025-03-03 16:07    35  ****************
 101    2025-03-03 17:06    36  *****************
 102    2025-03-03 18:05    36  *****************
 103    2025-03-03 19:04    35  ****************
 ...    ..(  2 skipped).    ..  ****************
 106    2025-03-03 22:01    35  ****************
 107    2025-03-03 23:00     ?  -
 108    2025-03-03 23:59    35  ****************
 ...    ..(  2 skipped).    ..  ****************
 111    2025-03-04 02:56    35  ****************
 112    2025-03-04 03:55    34  ***************
 113    2025-03-04 04:54    34  ***************
 114    2025-03-04 05:53    34  ***************
 115    2025-03-04 06:52     ?  -
 116    2025-03-04 07:51    18  -
 117    2025-03-04 08:50     ?  -
 118    2025-03-04 09:49    29  **********
 119    2025-03-04 10:48     ?  -
 120    2025-03-04 11:47    29  **********
 121    2025-03-04 12:46     ?  -
 122    2025-03-04 13:45    30  ***********
 123    2025-03-04 14:44     ?  -
 124    2025-03-04 15:43    25  ******
 125    2025-03-04 16:42    29  **********
 ...    ..(  2 skipped).    ..  **********
   0    2025-03-04 19:39    29  **********
   1    2025-03-04 20:38    30  ***********
   2    2025-03-04 21:37    30  ***********
   3    2025-03-04 22:36    30  ***********
   4    2025-03-04 23:35    29  **********
 ...    ..(  8 skipped).    ..  **********
  13    2025-03-05 08:26    29  **********
  14    2025-03-05 09:25    30  ***********
  15    2025-03-05 10:24    29  **********
 ...    ..(  4 skipped).    ..  **********
  20    2025-03-05 15:19    29  **********
  21    2025-03-05 16:18     ?  -
  22    2025-03-05 17:17    28  *********
  23    2025-03-05 18:16     ?  -
  24    2025-03-05 19:15    29  **********
 ...    ..(  2 skipped).    ..  **********
  27    2025-03-05 22:12    29  **********

SCT Error Recovery Control:
           Read:     70 (7.0 seconds)
          Write:     70 (7.0 seconds)

Device Statistics (GP Log 0x04)
Page  Offset Size        Value Flags Description
0x01  =====  =               =  ===  == General Statistics (rev 1) ==
0x01  0x008  4            1964  ---  Lifetime Power-On Resets
0x01  0x010  4           20669  ---  Power-on Hours
0x01  0x018  6     57672792258  ---  Logical Sectors Written
0x01  0x020  6      1533995721  ---  Number of Write Commands
0x01  0x028  6    178320138856  ---  Logical Sectors Read
0x01  0x030  6       928665898  ---  Number of Read Commands
0x01  0x038  6               -  ---  Date and Time TimeStamp
0x03  =====  =               =  ===  == Rotating Media Statistics (rev 1) ==
0x03  0x008  4      1520285346  N--  Spindle Motor Power-on Hours
0x03  0x010  4      1520270879  N--  Head Flying Hours
0x03  0x018  4            2221  ---  Head Load Events
0x03  0x020  4               0  ---  Number of Reallocated Logical Sectors
0x03  0x028  4               0  ---  Read Recovery Attempts
0x03  0x030  4               0  ---  Number of Mechanical Start Failures
0x03  0x038  4               0  ---  Number of Realloc. Candidate Logical Sectors
0x03  0x040  4              55  ---  Number of High Priority Unload Events
0x04  =====  =               =  ===  == General Errors Statistics (rev 1) ==
0x04  0x008  4               0  ---  Number of Reported Uncorrectable Errors
0x04  0x010  4               0  ---  Resets Between Cmd Acceptance and Completion
0x05  =====  =               =  ===  == Temperature Statistics (rev 1) ==
0x05  0x008  1              29  ---  Current Temperature
0x05  0x010  1              29  ---  Average Short Term Temperature
0x05  0x018  1              33  ---  Average Long Term Temperature
0x05  0x020  1              42  ---  Highest Temperature
0x05  0x028  1               0  ---  Lowest Temperature
0x05  0x030  1              38  ---  Highest Average Short Term Temperature
0x05  0x038  1              21  ---  Lowest Average Short Term Temperature
0x05  0x040  1              35  ---  Highest Average Long Term Temperature
0x05  0x048  1              22  ---  Lowest Average Long Term Temperature
0x05  0x050  4               0  ---  Time in Over-Temperature
0x05  0x058  1              70  ---  Specified Maximum Operating Temperature
0x05  0x060  4               0  ---  Time in Under-Temperature
0x05  0x068  1               0  ---  Specified Minimum Operating Temperature
0x06  =====  =               =  ===  == Transport Statistics (rev 1) ==
0x06  0x008  4             148  ---  Number of Hardware Resets
0x06  0x010  4             107  ---  Number of ASR Events
0x06  0x018  4               0  ---  Number of Interface CRC Errors
                                |||_ C monitored condition met
                                ||__ D supports DSN
                                |___ N normalized value

Pending Defects log (GP Log 0x0c) not supported

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x000a  2            3  Device-to-host register FISes sent due to a COMRESET
0x0001  2            0  Command failed due to ICRC error
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS

Seagate FARM log (GP Log 0xa6) supported [try: -l farm]
4

That drive looks OK.

Power on hours: 20669 which is c. 2 years 4 months
Reallocated sectors: 0
UDMA_CRC_Error_Count: 0
And you have written less than 8x total disk space.

The power cycle count is very high: 1984 over 20669 hours is once every 10.5 hours - and I have no idea why this would be the case - however I think this is still well within the specified cycle count.

So the drive looks good to me.

My advice would be to put it back in and then we can start to try to work out why the device errored and why the pool dropped out and how to get it back online again.

Once you have put it back in and powered up, please run the following commands and post the output:

  • lsblk -bo NAME,MODEL,ROTA,PTTYPE,TYPE,START,SIZE,PARTTYPENAME,PARTUUID
  • sudo zpool status -v
  • sudo zpool import
  • lspci
  • sudo storcli show all
  • sudo sas2flash -list
  • sudo sas3flash -list

P.S. The other smartctl -x output seems ok too.

5

Thanks for the quick response.

Here are the outputs you asked for. I saw after sudo ‘zpool status -v’ that it states the pool can be imported which I have never seen before!

Thanks for your help!

admin@truenas[~]$ lsblk -bo NAME,MODEL,ROTA,PTTYPE,TYPE,START,SIZE,PARTTYPENAME,PARTUUID
NAME   MODEL       ROTA PTTYPE TYPE    START          SIZE PARTTYPENAME             PARTUUID
sda    ORTIAL SSD     0 gpt    disk           128035676160
├─sda1                0 gpt    part     4096       1048576 BIOS boot                ba0187fa-1a80-4388-b879-f5a8c784a10b
├─sda2                0 gpt    part     6144     536870912 EFI System               84d9ac76-a067-46e5-a308-e18adc3c80be
├─sda3                0 gpt    part 34609152  110315773440 Solaris /usr & Apple ZFS 8146411d-ba7b-465f-bd2d-bbce3b6fa976
└─sda4                0 gpt    part  1054720   17179869184 Linux swap               cbd3cac0-61d9-4c8b-9812-581677fb8855
sdb    ST4000VN006    1 gpt    disk          4000787030016
├─sdb1                1 gpt    part      128    2147418624 Linux swap               3825d8d1-40a7-4287-b7dd-be3eee3a02ff
└─sdb2                1 gpt    part  4194432 3998639463936 Solaris /usr & Apple ZFS eeca42c0-28e3-46e2-b651-8d7cff4cc391
sdc    ST4000VN006    1 gpt    disk          4000787030016
├─sdc1                1 gpt    part      128    2147418624 Linux swap               8c9e0288-56e9-41dc-9ed8-646f9136350b
└─sdc2                1 gpt    part  4194432 3998639463936 Solaris /usr & Apple ZFS 53587986-6f93-43e5-8c53-b94198bd7f36
sdd    WDC WD40EFZ    1 gpt    disk          4000787030016
├─sdd1                1 gpt    part      128    2147418624 Linux swap               4de14fe6-f44d-458c-9b16-a3bb3b071d78
└─sdd2                1 gpt    part  4194432 3998639463936 Solaris /usr & Apple ZFS 976905da-4be9-47fa-85be-7db990a66e85
sde    ST4000VN008    1 gpt    disk          4000787030016
├─sde1                1 gpt    part      128    2147418624 Linux swap               e850fe9a-4ae4-4a2f-b599-c097fc012294
└─sde2                1 gpt    part  4194432 3998639463936 Solaris /usr & Apple ZFS ce9b3b38-f3cc-4aba-9317-fa0bb9bac74f
sdf    ST4000NE001    1 gpt    disk          4000787030016
└─sdf1                1 gpt    part     4096 3998639718912 Solaris /usr & Apple ZFS 2cf369db-a8c4-427e-b41c-73dbe6b109ad
sdg    ST4000NE002    1 gpt    disk          4000787030016
├─sdg1                1 gpt    part      128    2147418624 Linux swap               b4dcf37a-e795-4f87-8a64-592df4e28749
└─sdg2                1 gpt    part  4194432 3998639463936 Solaris /usr & Apple ZFS a40d66df-4943-419d-973d-21576e2b2ccc
admin@truenas[~]$ sudo zpool status -v
[sudo] password for admin:
  pool: boot-pool
 state: ONLINE
status: Some supported and requested features are not enabled on the pool.
        The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
        the pool may no longer be accessible by software that does not support
        the features. See zpool-features(7) for details.
  scan: scrub repaired 0B in 00:01:54 with 0 errors on Sat Mar  1 03:46:55 2025
config:

        NAME        STATE     READ WRITE CKSUM
        boot-pool   ONLINE       0     0     0
          sda3      ONLINE       0     0     0

errors: No known data errors
admin@truenas[~]$ sudo zpool import
  pool: MegaDrive
    id: 9633679618113839139
 state: ONLINE
action: The pool can be imported using its name or numeric identifier.
config:

        MegaDrive                                 ONLINE
          raidz1-0                                ONLINE
            2cf369db-a8c4-427e-b41c-73dbe6b109ad  ONLINE
            eeca42c0-28e3-46e2-b651-8d7cff4cc391  ONLINE
            a40d66df-4943-419d-973d-21576e2b2ccc  ONLINE
            53587986-6f93-43e5-8c53-b94198bd7f36  ONLINE
            ce9b3b38-f3cc-4aba-9317-fa0bb9bac74f  ONLINE
            976905da-4be9-47fa-85be-7db990a66e85  ONLINE
admin@truenas[~]$ lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 7
01:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset USB 3.1 xHCI Compliant Host Controller (rev 01)
01:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset SATA Controller (rev 01)
01:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Bridge (rev 01)
02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01)
02:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01)
02:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01)
03:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA Controller (rev 02)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 16)
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] (rev c8)
06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Renoir Radeon High Definition Audio Controller
06:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
06:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
06:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
06:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller
07:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
07:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
admin@truenas[~]$ sudo storcli show all
CLI Version = 007.2807.0000.0000 Dec 22, 2023
Operating system = Linux 6.6.44-production+truenas
Status Code = 0
Status = Success
Description = None

Number of Controllers = 0
Host Name = truenas
Operating System  = Linux 6.6.44-production+truenas


admin@truenas[~]$ sudo sas2flash -list
LSI Corporation SAS2 Flash Utility
Version 20.00.00.00 (2014.09.18)
Copyright (c) 2008-2014 LSI Corporation. All rights reserved

        No LSI SAS adapters found! Limited Command Set Available!
        ERROR: Command Not allowed without an adapter!
        ERROR: Couldn't Create Command -list
        Exiting Program.
admin@truenas[~]$ sudo sas3flash -list
Avago Technologies SAS3 Flash Utility
Version 16.00.00.00 (2017.05.02)
Copyright 2008-2017 Avago Technologies. All rights reserved.

        No Avago SAS adapters found! Limited Command Set Available!
        ERROR: Command Not allowed without an adapter!
        ERROR: Couldn't Create Command -list
        Exiting Program.
6

The original problem may have been bad SATA cable seating or minor corrosion on the pins.

Putting the original drive back in might have put the lego pieces back together again so it looks to ZFS as if it is importable.

I do not believe that there would be any harm in doing sudo zpool import -R /mnt MegaDrive and see whether it imports.

If it does import, you need to check that all the datasets appear at the correct point by doing ls -l /mnt/MegaDrive/* and then run a Scrub on the pool to check the data integrity.

7

Hi,
Running that command gives me the same I/O error:

admin@truenas[~]$ sudo zpool import -R /mnt MegaDrive
[sudo] password for admin:
cannot import 'MegaDrive': I/O error
        Destroy and re-create the pool from
        a backup source.
8

Yes, I feared that would be the outcome.

@honeybadger Any chance that you can help??