SSD Errored not capable of SMART self-check

clifford64 · June 22, 2024, 1:17pm

I am running TrueNAS Scale 24.04.1.1

I woke up this morning with a few strange errors in the web UI for one of my disks.

Device: /dev/sdc [SAT], not capable of SMART self-check.
Device: /dev/sdc [SAT], failed to read SMART Attribute Data.

The device is a Samsung 870 EVO 1TB. There are 4 of the same drive within this pool. I have 12 HDDs in a separate pool. All disks are attached to an LSI 9300-16i that has verified IT firmware and is up to date.

This is the only drive with alerted error and this is pretty much the first time I have received an error like this. I have encountered drive failure errors before, but this seems more like an issue with the system reading the SMART data rather than a failure error.

I have ran “smartctl -a /dev/sdc” and “smartctl -x /dev/sdc” and everything comes back normal. All self tests are passing and nothing seems out of the ordinary.

I can see self test history for the drive within the web UI and all looks normal. I even initiated a short test within the UI and it shows up in the history as completed and no errors.

It looks like the error timestamp is set for the same time when I perform a backup of some of the VMs on that pool via Veeam.

The is the first time I have seen this error and it appears to be more related to the system not being able to access the smart data at that time vs an actual drive failure. Has anyone else seen anything like this before?

joeschmuck · June 22, 2024, 2:22pm

A few questions:

How long had the system been working fine?
If for a while, then what changed? Did you update TrueNAS?
The Veeam backups, Have those always been working fine in the past?

The error message indicated the SSD was in SCSI Address Translation (SAT) mode, which could be the issue. When you ran the command manually you were not in SAT.

I’m pulling this out of my rear here and don’t have a clue if this is possible but I like to theorize. Maybe the Veeam backup somehow made the controller remain in SAT for your other drives (that I have no idea what those are because you didn’t post your system configuration) and this caused the issue.

Your drives appear to be fine based on what you have indicated, that is a good thing. Figuring out why it happened is another story.

clifford64 · June 22, 2024, 2:52pm

I have had both pools for about 3 years no without any issues.
I updated TrueNAS when 24.04.1.1 came out about a month ago. Backups and jobs run weekly, so they have definitely been run on the newest update. No alerts on previous runs until today.
Veeam backups have always worked fine in the past.

The pool the SSD is in is for hosting a few VMs connected via iSCSI to an ESXi host. There are 4 SSDs total in a RAIDz1 configuration.

After looking through the kernel log, I do see that the drive was reset. It tried to issue it some commands and they timed out. So I am assuming it performed a drive reset.

There might be something underlying here and I will definitely keep an eye on it. This could be the start of a dying drive.

joeschmuck · June 22, 2024, 3:15pm

Two things to do:

If you are able to grab the output of smartctl -x /dev/sdc and post it, then we can examine it and tell you if there are any signs of it dying soon.
at an SSH window, enter midclt call disk.smart_attributes sdc | jq and post that too.

Step 2 reads the smart data that TrueNAS already has where Step 1 reads it at that time from the drive and TrueNAS is really not involved. Well that is how I understand it.

clifford64 · June 22, 2024, 10:03pm

Smartctl -x /dev/sdc

smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.29-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Samsung based SSDs
Device Model:     Samsung SSD 870 EVO 1TB
Serial Number:    REDACTED
LU WWN Device Id: REDACTED
Firmware Version: SVT02B6Q
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
TRIM Command:     Available, deterministic, zeroed
Device is:        In smartctl database 7.3/5528
ATA Version is:   ACS-4 T13/BSR INCITS 529 revision 5
SATA Version is:  SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Sat Jun 22 17:58:51 2024
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:                (    0) seconds.
Offline data collection
capabilities:                    (0x53) 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.
                                        No 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:        (  85) minutes.
SCT capabilities:              (0x003d) SCT Status supported.
                                        SCT Error Recovery Control supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  5 Reallocated_Sector_Ct   PO--CK   100   100   010    -    0
  9 Power_On_Hours          -O--CK   097   097   000    -    13594
 12 Power_Cycle_Count       -O--CK   099   099   000    -    51
177 Wear_Leveling_Count     PO--C-   093   093   000    -    159
179 Used_Rsvd_Blk_Cnt_Tot   PO--C-   100   100   010    -    0
181 Program_Fail_Cnt_Total  -O--CK   100   100   010    -    0
182 Erase_Fail_Count_Total  -O--CK   100   100   010    -    0
183 Runtime_Bad_Block       PO--C-   100   100   010    -    0
187 Uncorrectable_Error_Cnt -O--CK   100   100   000    -    0
190 Airflow_Temperature_Cel -O--CK   068   051   000    -    32
195 ECC_Error_Rate          -O-RC-   200   200   000    -    0
199 CRC_Error_Count         -OSRCK   100   100   000    -    0
235 POR_Recovery_Count      -O--C-   099   099   000    -    40
241 Total_LBAs_Written      -O--CK   099   099   000    -    80060201646
252 Unknown_Attribute       -O--CK   100   100   000    -    3
                            ||||||_ 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      1  Comprehensive SMART error log
0x03       GPL     R/O      1  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
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xa1           SL  VS      16  Device vendor specific log
0xa5           SL  VS      16  Device vendor specific log
0xce           SL  VS      16  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 (1 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%     13584         -
# 2  Extended offline    Completed without error       00%     13579         -
# 3  Short offline       Completed without error       00%     13506         -
# 4  Short offline       Completed without error       00%     13338         -
# 5  Extended offline    Completed without error       00%     13243         -
# 6  Short offline       Completed without error       00%     13170         -
# 7  Short offline       Completed without error       00%     12930         -
# 8  Extended offline    Completed without error       00%     12836         -
# 9  Short offline       Completed without error       00%     12763         -
#10  Short offline       Completed without error       00%     12595         -
#11  Extended offline    Completed without error       00%     12500         -
#12  Short offline       Completed without error       00%     12427         -
#13  Short offline       Completed without error       00%     12211         -
#14  Extended offline    Completed without error       00%     12116         -
#15  Short offline       Completed without error       00%     12043         -
#16  Short offline       Completed without error       00%     11875         -
#17  Extended offline    Completed without error       00%     11780         -
#18  Short offline       Completed without error       00%     11707         -
#19  Short offline       Completed without error       00%     11467         -

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
  256        0    65535  Read_scanning was never started
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):       256 (0x0100)
Device State:                        Active (0)
Current Temperature:                    32 Celsius
Power Cycle Min/Max Temperature:     27/44 Celsius
Lifetime    Min/Max Temperature:     18/49 Celsius
Specified Max Operating Temperature:    70 Celsius
Under/Over Temperature Limit Count:   0/0
SMART Status:                        0xc24f (PASSED)

SCT Temperature History Version:     2
Temperature Sampling Period:         10 minutes
Temperature Logging Interval:        10 minutes
Min/Max recommended Temperature:      0/70 Celsius
Min/Max Temperature Limit:            0/70 Celsius
Temperature History Size (Index):    128 (105)

Index    Estimated Time   Temperature Celsius
 106    2024-06-21 20:40    34  ***************
 ...    ..(  3 skipped).    ..  ***************
 110    2024-06-21 21:20    34  ***************
 111    2024-06-21 21:30    33  **************
 112    2024-06-21 21:40    33  **************
 113    2024-06-21 21:50    32  *************
 114    2024-06-21 22:00    32  *************
 115    2024-06-21 22:10    33  **************
 116    2024-06-21 22:20    33  **************
 117    2024-06-21 22:30    32  *************
 118    2024-06-21 22:40    32  *************
 119    2024-06-21 22:50    33  **************
 120    2024-06-21 23:00    33  **************
 121    2024-06-21 23:10    32  *************
 122    2024-06-21 23:20    32  *************
 123    2024-06-21 23:30    33  **************
 124    2024-06-21 23:40    32  *************
 ...    ..(  5 skipped).    ..  *************
   2    2024-06-22 00:40    32  *************
   3    2024-06-22 00:50    31  ************
   4    2024-06-22 01:00    32  *************
   5    2024-06-22 01:10    32  *************
   6    2024-06-22 01:20    33  **************
 ...    ..(  2 skipped).    ..  **************
   9    2024-06-22 01:50    33  **************
  10    2024-06-22 02:00    34  ***************
  11    2024-06-22 02:10    40  *********************
  12    2024-06-22 02:20    43  ************************
  13    2024-06-22 02:30    44  *************************
 ...    ..(  2 skipped).    ..  *************************
  16    2024-06-22 03:00    44  *************************
  17    2024-06-22 03:10    41  **********************
  18    2024-06-22 03:20    41  **********************
  19    2024-06-22 03:30    41  **********************
  20    2024-06-22 03:40    34  ***************
  21    2024-06-22 03:50    34  ***************
  22    2024-06-22 04:00    38  *******************
  23    2024-06-22 04:10    34  ***************
  24    2024-06-22 04:20    34  ***************
  25    2024-06-22 04:30    33  **************
  26    2024-06-22 04:40    34  ***************
 ...    ..(  8 skipped).    ..  ***************
  35    2024-06-22 06:10    34  ***************
  36    2024-06-22 06:20    33  **************
  37    2024-06-22 06:30    34  ***************
 ...    ..(  5 skipped).    ..  ***************
  43    2024-06-22 07:30    34  ***************
  44    2024-06-22 07:40    33  **************
  45    2024-06-22 07:50    33  **************
  46    2024-06-22 08:00    34  ***************
  47    2024-06-22 08:10    34  ***************
  48    2024-06-22 08:20    33  **************
  49    2024-06-22 08:30    34  ***************
 ...    ..(  5 skipped).    ..  ***************
  55    2024-06-22 09:30    34  ***************
  56    2024-06-22 09:40    35  ****************
  57    2024-06-22 09:50    35  ****************
  58    2024-06-22 10:00    34  ***************
  59    2024-06-22 10:10    34  ***************
  60    2024-06-22 10:20    34  ***************
  61    2024-06-22 10:30    35  ****************
  62    2024-06-22 10:40    35  ****************
  63    2024-06-22 10:50    34  ***************
  64    2024-06-22 11:00    34  ***************
  65    2024-06-22 11:10    34  ***************
  66    2024-06-22 11:20    35  ****************
  67    2024-06-22 11:30    34  ***************
 ...    ..(  4 skipped).    ..  ***************
  72    2024-06-22 12:20    34  ***************
  73    2024-06-22 12:30    33  **************
  74    2024-06-22 12:40    33  **************
  75    2024-06-22 12:50    34  ***************
  76    2024-06-22 13:00    34  ***************
  77    2024-06-22 13:10    34  ***************
  78    2024-06-22 13:20    33  **************
 ...    ..(  5 skipped).    ..  **************
  84    2024-06-22 14:20    33  **************
  85    2024-06-22 14:30    34  ***************
  86    2024-06-22 14:40    34  ***************
  87    2024-06-22 14:50    34  ***************
  88    2024-06-22 15:00    35  ****************
  89    2024-06-22 15:10    34  ***************
  90    2024-06-22 15:20    34  ***************
  91    2024-06-22 15:30    35  ****************
  92    2024-06-22 15:40    34  ***************
  93    2024-06-22 15:50    33  **************
  94    2024-06-22 16:00    34  ***************
  95    2024-06-22 16:10    33  **************
  96    2024-06-22 16:20    34  ***************
  97    2024-06-22 16:30    33  **************
  98    2024-06-22 16:40    33  **************
  99    2024-06-22 16:50    33  **************
 100    2024-06-22 17:00    32  *************
 ...    ..(  4 skipped).    ..  *************
 105    2024-06-22 17:50    32  *************

SCT Error Recovery Control:
           Read: Disabled
          Write: Disabled

Device Statistics (GP Log 0x04)
Page  Offset Size        Value Flags Description
0x01  =====  =               =  ===  == General Statistics (rev 1) ==
0x01  0x008  4              51  ---  Lifetime Power-On Resets
0x01  0x010  4           13594  ---  Power-on Hours
0x01  0x018  6     80060201646  ---  Logical Sectors Written
0x01  0x020  6      1914308202  ---  Number of Write Commands
0x01  0x028  6     23051031856  ---  Logical Sectors Read
0x01  0x030  6       698365845  ---  Number of Read Commands
0x01  0x038  6           89000  ---  Date and Time TimeStamp
0x04  =====  =               =  ===  == General Errors Statistics (rev 1) ==
0x04  0x008  4               0  ---  Number of Reported Uncorrectable Errors
0x04  0x010  4               1  ---  Resets Between Cmd Acceptance and Completion
0x05  =====  =               =  ===  == Temperature Statistics (rev 1) ==
0x05  0x008  1              32  ---  Current Temperature
0x05  0x020  1              49  ---  Highest Temperature
0x05  0x028  1              18  ---  Lowest Temperature
0x05  0x058  1              70  ---  Specified Maximum Operating Temperature
0x06  =====  =               =  ===  == Transport Statistics (rev 1) ==
0x06  0x008  4              58  ---  Number of Hardware Resets
0x06  0x010  4               0  ---  Number of ASR Events
0x06  0x018  4               0  ---  Number of Interface CRC Errors
0x07  =====  =               =  ===  == Solid State Device Statistics (rev 1) ==
0x07  0x008  1               6  N--  Percentage Used Endurance Indicator
                                |||_ 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
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            5  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2            5  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
0x0010  2            0  R_ERR response for host-to-device data FIS, non-CRC
0x0012  2            0  R_ERR response for host-to-device non-data FIS, CRC
0x0013  2            0  R_ERR response for host-to-device non-data FIS, non-CRC

midctl call disk.smart_attributes sdc | jq

[
  {
    "id": 5,
    "name": "Reallocated_Sector_Ct",
    "value": 100,
    "worst": 100,
    "thresh": 10,
    "when_failed": "",
    "flags": {
      "value": 51,
      "string": "PO--CK ",
      "prefailure": true,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 9,
    "name": "Power_On_Hours",
    "value": 97,
    "worst": 97,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 13594,
      "string": "13594"
    }
  },
  {
    "id": 12,
    "name": "Power_Cycle_Count",
    "value": 99,
    "worst": 99,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 51,
      "string": "51"
    }
  },
  {
    "id": 177,
    "name": "Wear_Leveling_Count",
    "value": 93,
    "worst": 93,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 19,
      "string": "PO--C- ",
      "prefailure": true,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": false
    },
    "raw": {
      "value": 159,
      "string": "159"
    }
  },
  {
    "id": 179,
    "name": "Used_Rsvd_Blk_Cnt_Tot",
    "value": 100,
    "worst": 100,
    "thresh": 10,
    "when_failed": "",
    "flags": {
      "value": 19,
      "string": "PO--C- ",
      "prefailure": true,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": false
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 181,
    "name": "Program_Fail_Cnt_Total",
    "value": 100,
    "worst": 100,
    "thresh": 10,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 182,
    "name": "Erase_Fail_Count_Total",
    "value": 100,
    "worst": 100,
    "thresh": 10,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 183,
    "name": "Runtime_Bad_Block",
    "value": 100,
    "worst": 100,
    "thresh": 10,
    "when_failed": "",
    "flags": {
      "value": 19,
      "string": "PO--C- ",
      "prefailure": true,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": false
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 187,
    "name": "Uncorrectable_Error_Cnt",
    "value": 100,
    "worst": 100,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 190,
    "name": "Airflow_Temperature_Cel",
    "value": 68,
    "worst": 51,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 32,
      "string": "32"
    }
  },
  {
    "id": 195,
    "name": "ECC_Error_Rate",
    "value": 200,
    "worst": 200,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 26,
      "string": "-O-RC- ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": true,
      "event_count": true,
      "auto_keep": false
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 199,
    "name": "CRC_Error_Count",
    "value": 100,
    "worst": 100,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 62,
      "string": "-OSRCK ",
      "prefailure": false,
      "updated_online": true,
      "performance": true,
      "error_rate": true,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 0,
      "string": "0"
    }
  },
  {
    "id": 235,
    "name": "POR_Recovery_Count",
    "value": 99,
    "worst": 99,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 18,
      "string": "-O--C- ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": false
    },
    "raw": {
      "value": 40,
      "string": "40"
    }
  },
  {
    "id": 241,
    "name": "Total_LBAs_Written",
    "value": 99,
    "worst": 99,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 80060365822,
      "string": "80060365822"
    }
  },
  {
    "id": 252,
    "name": "Unknown_Attribute",
    "value": 100,
    "worst": 100,
    "thresh": 0,
    "when_failed": "",
    "flags": {
      "value": 50,
      "string": "-O--CK ",
      "prefailure": false,
      "updated_online": true,
      "performance": false,
      "error_rate": false,
      "event_count": true,
      "auto_keep": true
    },
    "raw": {
      "value": 3,
      "string": "3"
    }
  }
]

joeschmuck · June 23, 2024, 2:30am

All looks good. As you said, keep an eye on it and see if there is some commonality the next time it happens, but the drive looks great, unless there is something physically wrong that SMART cannot detect of course.