SMART - Currently unreadable (pending) sectors - help me understand

DuMbh3aD

Dabbler
Joined
Dec 6, 2022
Messages
17
Hello,
I've read all the posts in this forum (they weren't a few), as well as quite a few posts on this topic in other forums, and I still can't figure out what I should be looking at.
I get warnings on 2 of my SSDs:
Device: /dev/sdi [SAT], 2 Currently unreadable (pending) sectors.
Device: /dev/sde [SAT], 1 Currently unreadable (pending) sectors.

In the web GUI in disks S.M.A.R.T Test Results I see Remaining: N/A; Lifetime: 894; Error: N/A (Lifetime is different for each disk).

Since I'm a simple home user, I do what the experts say:
1 - I run the SMART test manually: smartctl -t long /dev/sdi and smartctl -t long /dev/sde
2 - look for errors in the output: smartctl -a /dev/sdi and smartctl -a /dev/sde
Code:
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.15.79+truenas] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     SPCC Solid State Disk
Serial Number:    30083939530
LU WWN Device Id: 5 000000 000003061
Firmware Version: 030fAA20
User Capacity:    512,110,190,592 bytes [512 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
TRIM Command:     Available, deterministic, zeroed
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Feb 15 16:51:37 2023 EET
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:  (0x02) Offline data collection activity
                                        was completed without error.
                                        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:                (   33) 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:        (   2) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x0031) SCT Status supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 20
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0032   100   100   050    Old_age   Always       -       0
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       1405
 12 Power_Cycle_Count       0x0012   100   100   000    Old_age   Always       -       92
167 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
168 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       0
169 Unknown_Attribute       0x0013   100   100   010    Pre-fail  Always       -       0
170 Unknown_Attribute       0x0033   100   100   010    Pre-fail  Always       -       114
171 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
172 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
174 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
175 Program_Fail_Count_Chip 0x0033   100   100   010    Pre-fail  Always       -       0
177 Wear_Leveling_Count     0x0012   100   100   000    Old_age   Always       -       0
180 Unused_Rsvd_Blk_Cnt_Tot 0x0033   100   100   000    Pre-fail  Always       -       114
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0033   100   100   090    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x0032   100   000   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0012   100   100   000    Old_age   Always       -       92
194 Temperature_Celsius     0x0022   040   040   000    Old_age   Always       -       40 (Min/Max 40/40)
196 Reallocated_Event_Count 0x0012   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       0
206 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       7
207 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       72
208 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       27
231 Unknown_SSD_Attribute   0x0023   098   098   005    Pre-fail  Always       -       2
233 Media_Wearout_Indicator 0x0032   100   100   000    Old_age   Always       -       11327
234 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       17780
241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       1857
242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       8147
243 Unknown_Attribute       0x0032   050   050   000    Old_age   Always       -       38

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      1402         -
# 2  Short offline       Completed without error       00%      1343         -
# 3  Extended offline    Completed without error       00%      1295         -
# 4  Extended offline    Completed without error       00%      1228         -
# 5  Short offline       Completed without error       00%      1215         -
# 6  Extended offline    Completed without error       00%      1108         -
# 7  Short offline       Completed without error       00%      1060         -
# 8  Short offline       Completed without error       00%       894         -

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
  128        0    65535  Read_scanning was completed without error
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


Code:
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.15.79+truenas] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Sending command: "Execute SMART Extended self-test routine immediately in off-line mode".
Drive command "Execute SMART Extended self-test routine immediately in off-line mode" successful.
Testing has begun.
Please wait 2 minutes for test to complete.
Test will complete after Wed Feb 15 16:57:47 2023 EET
Use smartctl -X to abort test.
root@truenas[~]# smartctl -a /dev/sde     
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.15.79+truenas] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     SPCC Solid State Disk
Serial Number:    30083933959
LU WWN Device Id: 5 000000 000001202
Firmware Version: 030fAA20
User Capacity:    512,110,190,592 bytes [512 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
TRIM Command:     Available, deterministic, zeroed
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Feb 15 16:58:10 2023 EET
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:  (0x02) Offline data collection activity
                                        was completed without error.
                                        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:                (   33) 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:        (   2) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x0031) SCT Status supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 20
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0032   100   100   050    Old_age   Always       -       0
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       1393
 12 Power_Cycle_Count       0x0012   100   100   000    Old_age   Always       -       90
167 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
168 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       0
169 Unknown_Attribute       0x0013   100   100   010    Pre-fail  Always       -       0
170 Unknown_Attribute       0x0033   100   100   010    Pre-fail  Always       -       114
171 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
172 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
174 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
175 Program_Fail_Count_Chip 0x0033   100   100   010    Pre-fail  Always       -       0
177 Wear_Leveling_Count     0x0012   100   100   000    Old_age   Always       -       0
180 Unused_Rsvd_Blk_Cnt_Tot 0x0033   100   100   000    Pre-fail  Always       -       114
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0033   100   100   090    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x0032   100   000   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0012   100   100   000    Old_age   Always       -       90
194 Temperature_Celsius     0x0022   040   040   000    Old_age   Always       -       40 (Min/Max 40/40)
196 Reallocated_Event_Count 0x0012   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       0
206 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       7
207 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       63
208 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       25
231 Unknown_SSD_Attribute   0x0023   098   098   005    Pre-fail  Always       -       2
233 Media_Wearout_Indicator 0x0032   100   100   000    Old_age   Always       -       8492
234 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       10539
241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       1899
242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       7407
243 Unknown_Attribute       0x0032   050   050   000    Old_age   Always       -       37

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      1393         -
# 2  Short offline       Completed without error       00%      1331         -
# 3  Extended offline    Completed without error       00%      1283         -
# 4  Extended offline    Completed without error       00%      1276         -
# 5  Short offline       Completed without error       00%      1203         -
# 6  Extended offline    Completed without error       00%      1096         -
# 7  Short offline       Completed without error       00%      1048         -
# 8  Extended offline    Completed without error       00%      1014         -
# 9  Extended offline    Completed without error       00%      1014         -
#10  Short offline       Completed without error       00%       882         -

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
  128        0    65535  Read_scanning was completed without error
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.

And here I was already very confused. Everywhere it says No Errors Logged and Completed without error.

I made the server on Christmas:
ProLiant ML350e Gen8 v2
HP H220 (SAS2308_1(D1) 20.00.07.00 14.01.30.16 07.39.02.00)
2*Intel(R) Xeon(R) CPU E5-2450 v2 @ 2.50GHz
72GB RAM
8 brand new SSDs for date and 1 for boot
TrueNAS-SCALE-22.12.0

And let's move on to the questions asking for help:
1-What should I do about the Currently unreadable (pending) sectors problem?
2-Which of all the information from the SMART test should I watch and follow over time?
3-This is a suggestion to the developers. Is it possible for the OS to read all the information after it is run as a task in the S.M.A.R.T Test Results in the web GUI so that we simple users can see a simplified result but with everything important? And to add a "button" to "fix", if possible, the problem.
Many users know how to use shell, but also many do not. I'm throwing in some codes I found on the forums and hope they work for me too. It took me a while to figure out that some of them I can't run as admin and have to log in as root.

Sorry for my english and thanks for your time!
 
Joined
Oct 22, 2019
Messages
3,641
Since these are SSDs, the firmware might have already remapped the sector(s), thus the error no longer exists.

Just keep on eye on how often this happens. You can "dismiss" the old notifications.

If it keeps happening regularly, then there could be an underlying issue.
 

DuMbh3aD

Dabbler
Joined
Dec 6, 2022
Messages
17
Hello,
Today I have the same warnings, but this time with the 3rd drive.

After searching the internet for a while, I found this command: more /var/log/error
Here is the result for the last 3 days:

Code:
Feb 14 16:23:57 truenas smartd[6277]: Device: /dev/sde [SAT], 1 Currently unreadable (pending) sectors
Feb 14 16:23:58 truenas smartd[6277]: Device: /dev/sde [SAT], 1 Currently unreadable (pending) sectors
Feb 15 09:23:57 truenas smartd[6277]: Device: /dev/sdi [SAT], 1 Currently unreadable (pending) sectors
Feb 15 09:23:58 truenas smartd[6277]: Device: /dev/sdi [SAT], 1 Currently unreadable (pending) sectors
Feb 15 10:53:57 truenas smartd[6277]: Device: /dev/sde [SAT], 1 Currently unreadable (pending) sectors
Feb 15 10:53:57 truenas smartd[6277]: Device: /dev/sde [SAT], 1 Currently unreadable (pending) sectors
Feb 15 12:53:57 truenas smartd[6277]: Device: /dev/sdi [SAT], 2 Currently unreadable (pending) sectors
Feb 15 12:53:57 truenas smartd[6277]: Device: /dev/sdi [SAT], 2 Currently unreadable (pending) sectors
Feb 16 13:53:57 truenas smartd[6277]: Device: /dev/sdi [SAT], 3 Currently unreadable (pending) sectors
Feb 16 13:53:57 truenas smartd[6277]: Device: /dev/sdi [SAT], 3 Currently unreadable (pending) sectors
Feb 16 13:53:57 truenas smartd[6277]: Device: /dev/sdf [SAT], 2 Currently unreadable (pending) sectors
Feb 16 13:53:58 truenas smartd[6277]: Device: /dev/sdf [SAT], 2 Currently unreadable (pending) sectors
Feb 16 13:53:58 truenas smartd[6277]: Device: /dev/sde [SAT], 4 Currently unreadable (pending) sectors
Feb 16 13:53:58 truenas smartd[6277]: Device: /dev/sde [SAT], 4 Currently unreadable (pending) sectors
Feb 16 14:23:57 truenas smartd[6277]: Device: /dev/sdf [SAT], 2 Currently unreadable (pending) sectors
Feb 16 14:23:57 truenas smartd[6277]: Device: /dev/sdf [SAT], 2 Currently unreadable (pending) sectors
Feb 16 14:23:57 truenas smartd[6277]: Device: /dev/sde [SAT], 7 Currently unreadable (pending) sectors (changed +3)
Feb 16 14:23:57 truenas smartd[6277]: Device: /dev/sde [SAT], 7 Currently unreadable (pending) sectors (changed +3)
Feb 16 14:53:58 truenas smartd[6277]: Device: /dev/sde [SAT], 3 Currently unreadable (pending) sectors (changed -4)
Feb 16 14:53:58 truenas smartd[6277]: Device: /dev/sde [SAT], 3 Currently unreadable (pending) sectors (changed -4)


Why is there no "View Logs" button :rolleyes:

As well as the SMART result for the 3 drives

Code:
smartctl -a /dev/sde
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.15.79+truenas] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     SPCC Solid State Disk
Serial Number:    30083933959
LU WWN Device Id: 5 000000 000001202
Firmware Version: 030fAA20
User Capacity:    512,110,190,592 bytes [512 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
TRIM Command:     Available, deterministic, zeroed
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Thu Feb 16 15:19:02 2023 EET
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:  (0x02) Offline data collection activity
                                        was completed without error.
                                        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:                (   33) 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:        (   2) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x0031) SCT Status supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 20
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0032   100   100   050    Old_age   Always       -       0
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       1416
 12 Power_Cycle_Count       0x0012   100   100   000    Old_age   Always       -       90
167 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
168 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       0
169 Unknown_Attribute       0x0013   100   100   010    Pre-fail  Always       -       0
170 Unknown_Attribute       0x0033   100   100   010    Pre-fail  Always       -       114
171 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
172 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
174 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
175 Program_Fail_Count_Chip 0x0033   100   100   010    Pre-fail  Always       -       0
177 Wear_Leveling_Count     0x0012   100   100   000    Old_age   Always       -       0
180 Unused_Rsvd_Blk_Cnt_Tot 0x0033   100   100   000    Pre-fail  Always       -       114
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0033   100   100   090    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x0032   100   000   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0012   100   100   000    Old_age   Always       -       90
194 Temperature_Celsius     0x0022   040   040   000    Old_age   Always       -       40 (Min/Max 40/40)
196 Reallocated_Event_Count 0x0012   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       0
206 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       7
207 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       63
208 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       25
231 Unknown_SSD_Attribute   0x0023   098   098   005    Pre-fail  Always       -       2
233 Media_Wearout_Indicator 0x0032   100   100   000    Old_age   Always       -       8631
234 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       10732
241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       1922
242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       7428
243 Unknown_Attribute       0x0032   050   050   000    Old_age   Always       -       36

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      1415         -
# 2  Short offline       Completed without error       00%      1415         -
# 3  Short offline       Completed without error       00%      1400         -
# 4  Extended offline    Completed without error       00%      1393         -
# 5  Short offline       Completed without error       00%      1331         -
# 6  Extended offline    Completed without error       00%      1283         -
# 7  Extended offline    Completed without error       00%      1276         -
# 8  Short offline       Completed without error       00%      1203         -
# 9  Extended offline    Completed without error       00%      1096         -
#10  Short offline       Completed without error       00%      1048         -
#11  Extended offline    Completed without error       00%      1014         -
#12  Extended offline    Completed without error       00%      1014         -
#13  Short offline       Completed without error       00%       882         -

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
  128        0    65535  Read_scanning was completed without error
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


Code:
smartctl -a /dev/sdf
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.15.79+truenas] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     SPCC Solid State Disk
Serial Number:    30083939527
LU WWN Device Id: 5 000000 00000305e
Firmware Version: 030fAA20
User Capacity:    512,110,190,592 bytes [512 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
TRIM Command:     Available, deterministic, zeroed
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Thu Feb 16 15:19:44 2023 EET
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:  (0x02) Offline data collection activity
                                        was completed without error.
                                        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:                (   33) 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:        (   2) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x0031) SCT Status supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 20
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0032   100   100   050    Old_age   Always       -       0
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       1428
 12 Power_Cycle_Count       0x0012   100   100   000    Old_age   Always       -       93
167 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
168 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       0
169 Unknown_Attribute       0x0013   100   100   010    Pre-fail  Always       -       0
170 Unknown_Attribute       0x0033   100   100   010    Pre-fail  Always       -       114
171 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
172 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
174 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
175 Program_Fail_Count_Chip 0x0033   100   100   010    Pre-fail  Always       -       0
177 Wear_Leveling_Count     0x0012   100   100   000    Old_age   Always       -       0
180 Unused_Rsvd_Blk_Cnt_Tot 0x0033   100   100   000    Pre-fail  Always       -       114
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0033   100   100   090    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x0032   100   000   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0012   100   100   000    Old_age   Always       -       93
194 Temperature_Celsius     0x0022   040   040   000    Old_age   Always       -       40 (Min/Max 40/40)
196 Reallocated_Event_Count 0x0012   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       0
206 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       8
207 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       61
208 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       25
231 Unknown_SSD_Attribute   0x0023   098   098   005    Pre-fail  Always       -       2
233 Media_Wearout_Indicator 0x0032   100   100   000    Old_age   Always       -       10883
234 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       16717
241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       1817
242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       8158
243 Unknown_Attribute       0x0032   050   050   000    Old_age   Always       -       38

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      1428         -
# 2  Short offline       Completed without error       00%      1412         -
# 3  Short offline       Completed without error       00%      1343         -
# 4  Extended offline    Completed without error       00%      1295         -
# 5  Short offline       Completed without error       00%      1215         -
# 6  Extended offline    Completed without error       00%      1108         -
# 7  Short offline       Completed without error       00%      1060         -
# 8  Short offline       Completed without error       00%       894         -

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
  128        0    65535  Read_scanning was completed without error
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


Code:
smartctl -a /dev/sdi
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.15.79+truenas] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     SPCC Solid State Disk
Serial Number:    30083939530
LU WWN Device Id: 5 000000 000003061
Firmware Version: 030fAA20
User Capacity:    512,110,190,592 bytes [512 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
TRIM Command:     Available, deterministic, zeroed
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Thu Feb 16 15:21:36 2023 EET
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:  (0x02) Offline data collection activity
                                        was completed without error.
                                        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:                (   33) 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:        (   2) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x0031) SCT Status supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 20
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0032   100   100   050    Old_age   Always       -       0
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       1428
 12 Power_Cycle_Count       0x0012   100   100   000    Old_age   Always       -       92
167 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
168 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       0
169 Unknown_Attribute       0x0013   100   100   010    Pre-fail  Always       -       0
170 Unknown_Attribute       0x0033   100   100   010    Pre-fail  Always       -       114
171 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
172 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       0
174 Unknown_Attribute       0x0022   100   100   000    Old_age   Always       -       0
175 Program_Fail_Count_Chip 0x0033   100   100   010    Pre-fail  Always       -       0
177 Wear_Leveling_Count     0x0012   100   100   000    Old_age   Always       -       0
180 Unused_Rsvd_Blk_Cnt_Tot 0x0033   100   100   000    Pre-fail  Always       -       114
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0033   100   100   090    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x0032   100   000   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0012   100   100   000    Old_age   Always       -       92
194 Temperature_Celsius     0x0022   040   040   000    Old_age   Always       -       40 (Min/Max 40/40)
196 Reallocated_Event_Count 0x0012   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       0
206 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       7
207 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       72
208 Unknown_SSD_Attribute   0x0032   200   200   000    Old_age   Always       -       27
231 Unknown_SSD_Attribute   0x0023   098   098   005    Pre-fail  Always       -       2
233 Media_Wearout_Indicator 0x0032   100   100   000    Old_age   Always       -       11496
234 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       18024
241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       1880
242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       8167
243 Unknown_Attribute       0x0032   050   050   000    Old_age   Always       -       36

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      1428         -
# 2  Short offline       Completed without error       00%      1412         -
# 3  Extended offline    Completed without error       00%      1402         -
# 4  Short offline       Completed without error       00%      1343         -
# 5  Extended offline    Completed without error       00%      1295         -
# 6  Extended offline    Completed without error       00%      1228         -
# 7  Short offline       Completed without error       00%      1215         -
# 8  Extended offline    Completed without error       00%      1108         -
# 9  Short offline       Completed without error       00%      1060         -
#10  Short offline       Completed without error       00%       894         -

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
  128        0    65535  Read_scanning was completed without error
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.
 
Joined
Jun 15, 2022
Messages
674
Could that be timeouts due to bad cables, or a bad SATA controller? The drives show:
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0

and while the raw data isn't always accurate it looks like the drives show
5 Reallocated_Sector_Ct 0x0032 100 100 050 Old_age Always - 0
184 End-to-End_Error 0x0033 100 100 090 Pre-fail Always - 0

which seems good. (100 is good as an adjusted figure, 0 is good as a raw value)

----

Who makes SPCC? Is it an inexpensive Chinese brand?

I'm used to seeing something like this (mind you, brands and controller BIOS version matter, along with SDD vs HDD):
=== START OF INFORMATION SECTION ===​
Vendor: HGST (or HP, Intel, Seagate, Maxtor, ...)​
Product: HUSMM151CLAR1600​
Revision: C29C​
Compliance: SPC-4​
User Capacity: 1,600,321,314,816 bytes [1.60 TB]​
(continued long list of stuff)​
Form Factor: 2.5 inches​
Logical Unit id: 0x5000cca050483414​
Serial number: 0SW8PZPA​

So this concerns me:
=== START OF INFORMATION SECTION ===​
Device Model: SPCC Solid State Disk​
Serial Number: 30083939530​
I saw there's no temperature sensor, which hints at "value item." Value items are often fine in a desktop--and I'm certainly not trying to grief you, rather help resolve your concerns as to the source of the problem.

It could be the "value item" drive is not able to handle the huge amounts of data a Copy-On_Write file system like ZFS throws at it.
 
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