Poweroutage, cannot reimport pool

TrueNAS General
1

hi there,

I recently experienced a power outage on my TrueNAS Scale (24.10.0.2) and realized my pool and datasets were erased. I have two mirror drives that showed disks with exported pools… So I tried following steps to export them and then reimport.

Now when I try to reimporting, the following shows:
-2095 is not a valid error (GUI)

  • zpool import
    pool: DataSet
    id: 8610289484681839548
    state: ONLINE
    action: The pool can be imported using its name or numeric identifier.
    config:

      DataSet                                   ONLINE
    mirror-0                                ONLINE
      c912daae-836f-4228-bde0-631de6bd8ed6  ONLINE
      09cc475a-e7ab-4509-8ca4-0cfdd152913f  ONLINE

  • zpool import
    cannot import ‘DataSet’: insufficient replicas
    Destroy and re-create the pool from
    a backup source.

I have a feeling one of the drives are corrupted? If I can somehow retrieve my files that would be ideal. Please help!

2

Run Smart LONG tests on your data drives and report back. Then run the following and post using Preformatted Text, </> on toolbar or Ctrl+e

sudo zpool status -v
sudo ZPOOL_SCRIPTS_AS_ROOT=1 zpool status -vLtsc lsblk,serial,smartx,smart
3

thanks, I am running it now

not sure why but during initial startup, when i run zpool status -v, it only shows my boot-pool. If I try zpool status -v DataSet, it shows no such pool

after running import a few times, then the status appears and then it shows one of my hard drives is failing. I will run the long test however to see if both are failing

4

Is there anywhere else I can find more information on the Smart reports? I checked the Jobs page and it said succeeded for both drives, but it took a long time

zpool import status -v
  pool: boot-pool
 state: ONLINE
  scan: scrub repaired 0B in 00:00:11 with 0 errors on Mon Jul 21 03:45:12 2025
config:

        NAME        STATE     READ WRITE CKSUM
        boot-pool   ONLINE       0     0     0
          sdc3      ONLINE       0     0     0

errors: No known data errors

truenas_admin@truenas[~]$ sudo ZPOOL_SCRIPTS_AS_ROOT=1 zpool status -vLtsc lsblk,serial,smartx,smart

  pool: boot-pool
 state: ONLINE
  scan: scrub repaired 0B in 00:00:11 with 0 errors on Mon Jul 21 03:45:12 2025
config:

        NAME        STATE     READ WRITE CKSUM  SLOW    size  vendor                             model                serial  hours_on  pwr_cyc  health  realloc  rep_ucor  temp  ata_err  cmd_to  pend_sec  off_ucor
        boot-pool   ONLINE       0     0     0     -
          sdc3      ONLINE       0     0     0     0  447.1G     ATA  PNY CS1211 480GB SSD 754D117-514  PNY26150000811871697       849     1910  PASSED        0         0    35        -       -         -         -  (untrimmed)

errors: No known data errors
5

I was hoping we would have found the ‘bad’ drive.

@HoneyBadger Looking for your input and expertise.

6

I’d pull a smartctl -x /dev/sdX for sda and sdb as that should have the results pages included alongside the rest of any warnings.

1 Like
7

Please use the </> button to format the output of shell commands.

2 Likes
8

I will add, and hopefully HoneyBadger has noticed, there’s been a non trivial amount of people with bad pools after a power outage and no UPS (or a UPS but Truenas did not shut down). Normally in the past, zfs could survive such outages without corruption so I personally think there’s a zfs issue with later versions.

2 Likes
9

I was thinking TrueNAS isn’t handling intermittent power issues as well as the past. It might be a good idea to have the systems set to remain off upon unexpected power off, instead of attempting to power back up. These may be brown out and intermittent power related.

1 Like
10

Yeah, we’ll never actually know for those cases as we were not there and measuring things. I’ve just never seen so many issues with power failures and lost pools. Brown outs or intermittent power are more devastating at times than surges.

Which is why, for me, a UPS is a requirement for a NAS (Truenas). In the past, it handled power outages better IMHO.

11

For some reason sda shows I did not run a long test?
Here is a screenshot of the job that ran successfully

sda_test
sda_test1271×457 15.6 KB

truenas_admin@truenas[~]$ sudo smartctl -x /dev/sda
[sudo] password for truenas_admin: 
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:     Western Digital Red (CMR)
Device Model:     WDC WD40EFPX-68C6CN0
Serial Number:    WD-WX62DC41ZAPL
LU WWN Device Id: 5 0014ee 2c15cd072
Firmware Version: 81.00A81
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:        In smartctl database 7.3/5706
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:    Mon Jul 21 16:31:41 2025 PDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM feature is:   Unavailable
Rd look-ahead is: Enabled
Write cache is:   Enabled
DSN feature is:   Unavailable
ATA Security is:  Disabled, NOT FROZEN [SEC1]
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:  (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:                (43440) 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:        ( 453) minutes.
Conveyance self-test routine
recommended polling time:        (   5) minutes.
SCT capabilities:              (0x3039) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     POSR-K   200   200   051    -    0
  3 Spin_Up_Time            POS--K   213   204   021    -    2333
  4 Start_Stop_Count        -O--CK   100   100   000    -    530
  5 Reallocated_Sector_Ct   PO--CK   200   200   140    -    0
  7 Seek_Error_Rate         -OSR-K   200   200   000    -    0
  9 Power_On_Hours          -O--CK   100   100   000    -    569
 10 Spin_Retry_Count        -O--CK   100   100   000    -    0
 11 Calibration_Retry_Count -O--CK   100   100   000    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    530
192 Power-Off_Retract_Count -O--CK   200   200   000    -    526
193 Load_Cycle_Count        -O--CK   200   200   000    -    13
194 Temperature_Celsius     -O---K   119   106   000    -    28
196 Reallocated_Event_Count -O--CK   200   200   000    -    0
197 Current_Pending_Sector  -O--CK   200   200   000    -    0
198 Offline_Uncorrectable   ----CK   100   253   000    -    0
199 UDMA_CRC_Error_Count    -O--CK   200   200   000    -    0
200 Multi_Zone_Error_Rate   ---R--   100   253   000    -    0
                            ||||||_ 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      6  Ext. Comprehensive SMART error log
0x04       GPL     R/O    256  Device Statistics log
0x04       SL      R/O    255  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
0x0c       GPL     R/O   2048  Pending Defects log
0x10       GPL     R/O      1  NCQ Command Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x24       GPL     R/O    307  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
0xa0-0xa7  GPL,SL  VS      16  Device vendor specific log
0xa8-0xb6  GPL,SL  VS       1  Device vendor specific log
0xb7       GPL,SL  VS      78  Device vendor specific log
0xbd       GPL,SL  VS       1  Device vendor specific log
0xc0       GPL,SL  VS       1  Device vendor specific log
0xc1       GPL     VS      93  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 (6 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%       542         -

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):       258 (0x0102)
Device State:                        Active (0)
Current Temperature:                    28 Celsius
Power Cycle Min/Max Temperature:     28/31 Celsius
Lifetime    Min/Max Temperature:     22/41 Celsius
Under/Over Temperature Limit Count:   0/0
Vendor specific:
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      0/65 Celsius
Min/Max Temperature Limit:           -41/85 Celsius
Temperature History Size (Index):    478 (227)

Index    Estimated Time   Temperature Celsius
 228    2025-07-21 08:34    30  ***********
 ...    ..(158 skipped).    ..  ***********
 387    2025-07-21 11:13    30  ***********
 388    2025-07-21 11:14     ?  -
 389    2025-07-21 11:15    31  ************
 390    2025-07-21 11:16    30  ***********
 ...    ..( 16 skipped).    ..  ***********
 407    2025-07-21 11:33    30  ***********
 408    2025-07-21 11:34    29  **********
 ...    ..(160 skipped).    ..  **********
  91    2025-07-21 14:15    29  **********
  92    2025-07-21 14:16    28  *********
 ...    ..(134 skipped).    ..  *********
 227    2025-07-21 16:31    28  *********

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 3) ==
0x01  0x008  4             530  ---  Lifetime Power-On Resets
0x01  0x010  4             569  ---  Power-on Hours
0x01  0x018  6      1798874848  ---  Logical Sectors Written
0x01  0x020  6         9500023  ---  Number of Write Commands
0x01  0x028  6      1341769554  ---  Logical Sectors Read
0x01  0x030  6          838081  ---  Number of Read Commands
0x01  0x038  6      2048400000  ---  Date and Time TimeStamp
0x02  =====  =               =  ===  == Free-Fall Statistics (rev 1) ==
0x02  0x010  4               0  ---  Overlimit Shock Events
0x03  =====  =               =  ===  == Rotating Media Statistics (rev 1) ==
0x03  0x008  4             568  ---  Spindle Motor Power-on Hours
0x03  0x010  4             550  ---  Head Flying Hours
0x03  0x018  4             540  ---  Head Load Events
0x03  0x020  4               0  ---  Number of Reallocated Logical Sectors
0x03  0x028  4             200  ---  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             526  ---  Number of High Priority Unload Events
0x04  =====  =               =  ===  == General Errors Statistics (rev 1) ==
0x04  0x008  4               0  ---  Number of Reported Uncorrectable Errors
0x04  0x010  4              54  ---  Resets Between Cmd Acceptance and Completion
0x05  =====  =               =  ===  == Temperature Statistics (rev 1) ==
0x05  0x008  1              28  ---  Current Temperature
0x05  0x010  1              28  ---  Average Short Term Temperature
0x05  0x018  1               -  ---  Average Long Term Temperature
0x05  0x020  1              38  ---  Highest Temperature
0x05  0x028  1              26  ---  Lowest Temperature
0x05  0x030  1              33  ---  Highest Average Short Term Temperature
0x05  0x038  1              28  ---  Lowest Average Short Term Temperature
0x05  0x040  1               -  ---  Highest Average Long Term Temperature
0x05  0x048  1               -  ---  Lowest Average Long Term Temperature
0x05  0x050  4               0  ---  Time in Over-Temperature
0x05  0x058  1              65  ---  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            1272  ---  Number of Hardware Resets
0x06  0x010  4             736  ---  Number of ASR Events
0x06  0x018  4               0  ---  Number of Interface CRC Errors
0xff  =====  =               =  ===  == Vendor Specific Statistics (rev 1) ==
0xff  0x008  7               0  ---  Vendor Specific
0xff  0x010  7               0  ---  Vendor Specific
0xff  0x018  7               0  ---  Vendor Specific
                                |||_ C monitored condition met
                                ||__ D supports DSN
                                |___ N normalized value

Pending Defects log (GP Log 0x0c)
No Defects Logged

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2            0  Command failed due to ICRC error
0x0002  2            0  R_ERR response for data FIS
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-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
0x0008  2            0  Device-to-host non-data FIS retries
0x0009  2            1  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2            2  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS
0x000f  2            0  R_ERR response for host-to-device data FIS, CRC
0x0012  2            0  R_ERR response for host-to-device non-data FIS, CRC
0x8000  4        18983  Vendor specific

truenas_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 BarraCuda 3.5 (SMR)
Device Model:     ST4000DM005-2DP166
Serial Number:    ZDH1MGQK
LU WWN Device Id: 5 000c50 0a35d66bc
Firmware Version: 0001
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 7.3/5706
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:    Mon Jul 21 16:35:06 2025 PDT
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, NOT FROZEN [SEC1]
Wt Cache Reorder: Unavailable

=== 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:        ( 613) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x10a5) SCT Status 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--   100   064   006    -    653544
  3 Spin_Up_Time            PO----   095   093   000    -    0
  4 Start_Stop_Count        -O--CK   097   097   020    -    3935
  5 Reallocated_Sector_Ct   PO--CK   100   100   010    -    0
  7 Seek_Error_Rate         POSR--   082   060   045    -    168796735
  9 Power_On_Hours          -O--CK   094   094   000    -    6062h+30m+18.295s
 10 Spin_Retry_Count        PO--C-   100   100   097    -    0
 12 Power_Cycle_Count       -O--CK   100   100   020    -    58
183 Runtime_Bad_Block       -O--CK   100   100   000    -    0
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   099   000    -    0 0 12
189 High_Fly_Writes         -O-RCK   100   100   000    -    0
190 Airflow_Temperature_Cel -O---K   071   056   040    -    29 (Min/Max 28/32)
191 G-Sense_Error_Rate      -O--CK   100   100   000    -    0
192 Power-Off_Retract_Count -O--CK   098   098   000    -    4408
193 Load_Cycle_Count        -O--CK   098   098   000    -    4667
194 Temperature_Celsius     -O---K   029   044   000    -    29 (0 18 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    -    5732h+17m+05.707s
241 Total_LBAs_Written      ------   100   253   000    -    9768263665
242 Total_LBAs_Read         ------   100   253   000    -    8613085386
                            ||||||_ 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
0xc0       GPL,SL  VS       1  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  Extended offline    Completed without error       00%      6043         -
# 2  Extended offline    Interrupted (host reset)      90%      6036         -
# 3  Short offline       Completed without error       00%      6035         -
# 4  Short offline       Completed without error       00%      6032         -
# 5  Short offline       Completed without error       00%      6032         -

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:     28/32 Celsius
Lifetime    Min/Max Temperature:     17/44 Celsius
Under/Over Temperature Limit Count:   0/0

SCT Temperature History Version:     2
Temperature Sampling Period:         3 minutes
Temperature Logging Interval:        59 minutes
Min/Max recommended Temperature:     14/55 Celsius
Min/Max Temperature Limit:           10/60 Celsius
Temperature History Size (Index):    128 (110)

Index    Estimated Time   Temperature Celsius
 111    2025-07-16 11:10    25  ******
 112    2025-07-16 12:09     ?  -
 113    2025-07-16 13:08    25  ******
 114    2025-07-16 14:07     ?  -
 115    2025-07-16 15:06    25  ******
 116    2025-07-16 16:05     ?  -
 117    2025-07-16 17:04    25  ******
 118    2025-07-16 18:03     ?  -
 119    2025-07-16 19:02    26  *******
 120    2025-07-16 20:01     ?  -
 121    2025-07-16 21:00    26  *******
 122    2025-07-16 21:59     ?  -
 123    2025-07-16 22:58    26  *******
 124    2025-07-16 23:57     ?  -
 125    2025-07-17 00:56    26  *******
 126    2025-07-17 01:55     ?  -
 127    2025-07-17 02:54    26  *******
   0    2025-07-17 03:53     ?  -
   1    2025-07-17 04:52    26  *******
   2    2025-07-17 05:51     ?  -
   3    2025-07-17 06:50    26  *******
   4    2025-07-17 07:49     ?  -
   5    2025-07-17 08:48    26  *******
   6    2025-07-17 09:47     ?  -
   7    2025-07-17 10:46    26  *******
   8    2025-07-17 11:45     ?  -
   9    2025-07-17 12:44    26  *******
  10    2025-07-17 13:43     ?  -
  11    2025-07-17 14:42    26  *******
  12    2025-07-17 15:41     ?  -
  13    2025-07-17 16:40    26  *******
  14    2025-07-17 17:39     ?  -
  15    2025-07-17 18:38    26  *******
  16    2025-07-17 19:37     ?  -
  17    2025-07-17 20:36    26  *******
  18    2025-07-17 21:35     ?  -
  19    2025-07-17 22:34    26  *******
  20    2025-07-17 23:33     ?  -
  21    2025-07-18 00:32    26  *******
  22    2025-07-18 01:31     ?  -
  23    2025-07-18 02:30    26  *******
  24    2025-07-18 03:29     ?  -
  25    2025-07-18 04:28    26  *******
  26    2025-07-18 05:27     ?  -
  27    2025-07-18 06:26    26  *******
  28    2025-07-18 07:25     ?  -
  29    2025-07-18 08:24    26  *******
  30    2025-07-18 09:23     ?  -
  31    2025-07-18 10:22    26  *******
  32    2025-07-18 11:21     ?  -
  33    2025-07-18 12:20    26  *******
  34    2025-07-18 13:19     ?  -
  35    2025-07-18 14:18    26  *******
  36    2025-07-18 15:17     ?  -
  37    2025-07-18 16:16    26  *******
  38    2025-07-18 17:15     ?  -
  39    2025-07-18 18:14    27  ********
  40    2025-07-18 19:13     ?  -
  41    2025-07-18 20:12    27  ********
  42    2025-07-18 21:11     ?  -
  43    2025-07-18 22:10    27  ********
  44    2025-07-18 23:09     ?  -
  45    2025-07-19 00:08    27  ********
  46    2025-07-19 01:07     ?  -
  47    2025-07-19 02:06    27  ********
  48    2025-07-19 03:05     ?  -
  49    2025-07-19 04:04    27  ********
  50    2025-07-19 05:03     ?  -
  51    2025-07-19 06:02    27  ********
  52    2025-07-19 07:01     ?  -
  53    2025-07-19 08:00    27  ********
  54    2025-07-19 08:59     ?  -
  55    2025-07-19 09:58    27  ********
  56    2025-07-19 10:57     ?  -
  57    2025-07-19 11:56    27  ********
  58    2025-07-19 12:55     ?  -
  59    2025-07-19 13:54    27  ********
  60    2025-07-19 14:53     ?  -
  61    2025-07-19 15:52    25  ******
  62    2025-07-19 16:51     ?  -
  63    2025-07-19 17:50    25  ******
  64    2025-07-19 18:49     ?  -
  65    2025-07-19 19:48    26  *******
  66    2025-07-19 20:47     ?  -
  67    2025-07-19 21:46    27  ********
  68    2025-07-19 22:45     ?  -
  69    2025-07-19 23:44    23  ****
  70    2025-07-20 00:43     ?  -
  71    2025-07-20 01:42    23  ****
  72    2025-07-20 02:41    30  ***********
  73    2025-07-20 03:40     ?  -
  74    2025-07-20 04:39    22  ***
  75    2025-07-20 05:38     ?  -
  76    2025-07-20 06:37    23  ****
  77    2025-07-20 07:36    30  ***********
  78    2025-07-20 08:35     ?  -
  79    2025-07-20 09:34    23  ****
  80    2025-07-20 10:33    30  ***********
  81    2025-07-20 11:32    30  ***********
  82    2025-07-20 12:31     ?  -
  83    2025-07-20 13:30    28  *********
  84    2025-07-20 14:29    30  ***********
  85    2025-07-20 15:28    32  *************
  86    2025-07-20 16:27    31  ************
 ...    ..(  2 skipped).    ..  ************
  89    2025-07-20 19:24    31  ************
  90    2025-07-20 20:23    30  ***********
  91    2025-07-20 21:22    30  ***********
  92    2025-07-20 22:21    29  **********
 ...    ..( 11 skipped).    ..  **********
 104    2025-07-21 10:09    29  **********
 105    2025-07-21 11:08    30  ***********
 106    2025-07-21 12:07    30  ***********
 107    2025-07-21 13:06    29  **********
 ...    ..(  2 skipped).    ..  **********
 110    2025-07-21 16:03    29  **********

SCT Error Recovery Control command not supported

Device Statistics (GP Log 0x04)
Page  Offset Size        Value Flags Description
0x01  =====  =               =  ===  == General Statistics (rev 1) ==
0x01  0x008  4              58  ---  Lifetime Power-On Resets
0x01  0x010  4            6062  ---  Power-on Hours
0x01  0x018  6      9777133281  ---  Logical Sectors Written
0x01  0x020  6       116843878  ---  Number of Write Commands
0x01  0x028  6      8746270686  ---  Logical Sectors Read
0x01  0x030  6        10285839  ---  Number of Read Commands
0x01  0x038  6               -  ---  Date and Time TimeStamp
0x03  =====  =               =  ===  == Rotating Media Statistics (rev 1) ==
0x03  0x008  4            5912  ---  Spindle Motor Power-on Hours
0x03  0x010  4             363  ---  Head Flying Hours
0x03  0x018  4            4667  ---  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            4409  ---  Number of High Priority Unload Events
0x04  =====  =               =  ===  == General Errors Statistics (rev 1) ==
0x04  0x008  4               0  ---  Number of Reported Uncorrectable Errors
0x04  0x010  4               5  ---  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              30  ---  Average Long Term Temperature
0x05  0x020  1              44  ---  Highest Temperature
0x05  0x028  1               0  ---  Lowest Temperature
0x05  0x030  1              42  ---  Highest Average Short Term Temperature
0x05  0x038  1              26  ---  Lowest Average Short Term Temperature
0x05  0x040  1              37  ---  Highest Average Long Term Temperature
0x05  0x048  1              29  ---  Lowest Average Long Term Temperature
0x05  0x050  4               0  ---  Time in Over-Temperature
0x05  0x058  1              60  ---  Specified Maximum Operating Temperature
0x05  0x060  4              30  ---  Time in Under-Temperature
0x05  0x068  1               5  ---  Specified Minimum Operating Temperature
0x06  =====  =               =  ===  == Transport Statistics (rev 1) ==
0x06  0x008  4             454  ---  Number of Hardware Resets
0x06  0x010  4              51  ---  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            8  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]
12

Let me know if my output is not formatted correctly? I used the preformatted text option

13

Your results were formatted fine. The BarraCuda is SMR and not recommended for use with TrueNAS.
SMR vs CMR ServeTheHome

@HoneyBadger what do you think? Any commands to run or try power down, pull Baracuda and see if it comes up in Degraded?

1 Like
14

I should have not cheaped out to begin with… sigh

If one of the drives are still working, would swapping it out with another drive allow me to still reimport?
I have another drive that I am ready to swap with

15

I would wait to hear from HoneyBadger. I didn’t want to do anything that may make troubleshooting difficult. If you had a single bad drive in a mirror pair, the pool should have still worked. You may have ‘errors’ on both and the system doesn’t know what to do since there are only two copies.

1 Like
16

So far so good (including formatting), except for the SMR drive but that should not prevent importing a pool.
We can have a look at labels:
sudo zdb -l /dev/sda2
sudo zdb -l /dev/sdb2

2 Likes
17

The presence of the SMR drive isn’t fantastic but as stated should not be preventing a pool import as we’re on mirrors here. Let’s see the labels as @etorix suggested.

18 
truenas_admin@truenas[~]$ sudo zdb -l /dev/sda2
cannot open '/dev/sda2': No such file or directory
truenas_admin@truenas[~]$ sudo zdb -l /dev/sdb2
cannot open '/dev/sdb2': No such file or directory
19

There is no sda2 or sdb2 but there is a 1

truenas_admin@truenas[/dev]$ sudo zdb -l /dev/sda1
------------------------------------
LABEL 0 
------------------------------------
    version: 5000
    name: 'DataSet'
    state: 0
    txg: 3049919
    pool_guid: 8610289484681839548
    errata: 0
    hostid: 1168512994
    hostname: 'truenas'
    top_guid: 17597434126019592049
    guid: 9870796191026097272
    vdev_children: 1
    vdev_tree:
        type: 'mirror'
        id: 0
        guid: 17597434126019592049
        whole_disk: 0
        metaslab_array: 133
        metaslab_shift: 34
        ashift: 12
        asize: 4000780386304
        is_log: 0
        create_txg: 4
        children[0]:
            type: 'disk'
            id: 0
            guid: 14739960081565547348
            path: '/dev/disk/by-partuuid/c912daae-836f-4228-bde0-631de6bd8ed6'
            whole_disk: 0
            DTL: 1790
            create_txg: 4
        children[1]:
            type: 'disk'
            id: 1
            guid: 9870796191026097272
            path: '/dev/disk/by-partuuid/09cc475a-e7ab-4509-8ca4-0cfdd152913f'
            whole_disk: 0
            DTL: 965
            create_txg: 4
    features_for_read:
        com.delphix:hole_birth
        com.delphix:embedded_data
        com.klarasystems:vdev_zaps_v2
    labels = 0 1 2 3 

truenas_admin@truenas[/dev]$ sudo zdb -l /dev/sdb1
------------------------------------
LABEL 0 
------------------------------------
    version: 5000
    name: 'DataSet'
    state: 0
    txg: 3285195
    pool_guid: 8610289484681839548
    errata: 0
    hostid: 1168512994
    hostname: 'truenas'
    top_guid: 17597434126019592049
    guid: 14739960081565547348
    vdev_children: 1
    vdev_tree:
        type: 'mirror'
        id: 0
        guid: 17597434126019592049
        whole_disk: 0
        metaslab_array: 133
        metaslab_shift: 34
        ashift: 12
        asize: 4000780386304
        is_log: 0
        create_txg: 4
        children[0]:
            type: 'disk'
            id: 0
            guid: 14739960081565547348
            path: '/dev/disk/by-partuuid/c912daae-836f-4228-bde0-631de6bd8ed6'
            whole_disk: 0
            DTL: 1790
            create_txg: 4
        children[1]:
            type: 'disk'
            id: 1
            guid: 9870796191026097272
            path: '/dev/disk/by-partuuid/09cc475a-e7ab-4509-8ca4-0cfdd152913f'
            whole_disk: 0
            DTL: 965
            create_txg: 4
            removed: 1
    features_for_read:
        com.delphix:hole_birth
        com.delphix:embedded_data
        com.klarasystems:vdev_zaps_v2
    labels = 0 1 2 3 ```
1 Like
20

Ouch! The drives are seriously out of sync.
Is the SMR Barracuda the current sda ?

Unless @HoneyBadger has a better idea, I’d suggest to take out the current sda (check serial numbers…), import the degraded pool and resilver with the new drive.