This just happened... 😨

This just happened... 😨
Photo by Vincent Botta / Unsplash

💡
UPDATE 19.4.2024:
Pending sector count increased to 3. I realized the drive is not part of the mergerFS array, but is used solely for backups. I recall this drive had some sector issue a few years ago that have then mysteriously disappeared. Anyways, started moving out the data from the drive and shopping for a set of new drives, maybe finally moving to ZFS

Regular BTRFS scrub of my OMV MergerFS array came up with this:

Scrub device /dev/sdb (id 1) done
Scrub started:    Tue Apr 16 10:32:35 2024
Status:          finished
Duration:        6:37:10
Total to scrub:  2.61TiB
Rate:            75.10MiB/s
Error summary:    read=112
  Corrected:      111
  Uncorrectable:  1
  Unverified:    0

Running HDSentinel showed this:

HDD Device  1: /dev/sdb
HDD Model ID : WDC WD30EFRX-68EUZN0
HDD Serial No: WD-WMC4N1776822
HDD Revision : 80.00A80
HDD Size     : 2861588 MB
Interface    : SAT Standard USB/ATA
Temperature  : 25 °C
Highest Temp.: 41 °C
Health       : 99 %
Performance  : 100 %
Power on time: 1374 days, 7 hours
Est. lifetime: more than 441 days
  There are 1 weak sectors found on the disk surface. They may be remapped any time in the later use of the disk.
  More information: https://www.hdsentinel.com/hard_disk_case_weak_sectors.php
  At this point, warranty replacement of the disk is not yet possible, only if the health drops further.
  It is recommended to examine the log of the disk regularly. All new problems found will be logged there.
    No actions needed.

Smartctl content is and the end of the post due to length and un-scrollability.

This is one of the oldest drives in my gear, acquired almost exactly 10 years ago (purchase date 30.3.2014) and running almost constantly at least since 2018 or so. Of course this just happens a week after missing one of the best deals for the past year for used enterprise harddrives. I should really begin to move out data from that disk. Will update if I ever did 😉

The pending sector count increased quite quickly to 3, so i moved all data out of the drive and started a repair job in HDSentinel under Windows.

The result it that the drive looks almost just like new:

Weirdly I think the same thing happened a few years ago that was solved in the same way.

smartctl 7.3 2022-02-28 r5338 [x86_64-linux-6.5.13-5-pve] (local build)
Copyright (C) 2002-22, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Red (CMR)
Device Model:     WDC WD30EFRX-68EUZN0
Serial Number:    WD-WMC4N1776822
LU WWN Device Id: 5 0014ee 0591ad868
Firmware Version: 80.00A80
User Capacity:    3,000,592,982,016 bytes [3.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Device is:        In smartctl database 7.3/5610
ATA Version is:   ACS-2 (minor revision not indicated)
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Wed Apr 17 22:49:10 2024 CEST
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: 		(39720) 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: 	 ( 399) minutes.
Conveyance self-test routine
recommended polling time: 	 (   5) minutes.
SCT capabilities: 	       (0x703d)	SCT Status supported.
					SCT Error Recovery Control supported.
					SCT Feature Control supported.
					SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     POSR-K   200   200   051    -    28
  3 Spin_Up_Time            POS--K   178   173   021    -    6058
  4 Start_Stop_Count        -O--CK   099   099   000    -    1332
  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   055   055   000    -    32983
 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    -    446
192 Power-Off_Retract_Count -O--CK   200   200   000    -    78
193 Load_Cycle_Count        -O--CK   198   198   000    -    6585
194 Temperature_Celsius     -O---K   125   109   000    -    25
196 Reallocated_Event_Count -O--CK   200   200   000    -    0
197 Current_Pending_Sector  -O--CK   200   200   000    -    1
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
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
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xa0-0xa7  GPL,SL  VS      16  Device vendor specific log
0xa8-0xb7  GPL,SL  VS       1  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)
Device Error Count: 32 (device log contains only the most recent 24 errors)
	CR     = Command Register
	FEATR  = Features Register
	COUNT  = Count (was: Sector Count) Register
	LBA_48 = Upper bytes of LBA High/Mid/Low Registers ]  ATA-8
	LH     = LBA High (was: Cylinder High) Register    ]   LBA
	LM     = LBA Mid (was: Cylinder Low) Register      ] Register
	LL     = LBA Low (was: Sector Number) Register     ]
	DV     = Device (was: Device/Head) Register
	DC     = Device Control Register
	ER     = Error register
	ST     = Status register
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

Error 32 [7] occurred at disk power-on lifetime: 32953 hours (1373 days + 1 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 46 0b cc f8 40 00  Error: UNC at LBA = 0x1460bccf8 = 5470145784

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 08 00 00 00 01 46 0b cc f8 40 00 28d+18:41:39.695  READ FPDMA QUEUED
  60 00 08 00 00 00 01 46 0b cc f0 40 00 28d+18:41:39.695  READ FPDMA QUEUED
  60 00 08 00 00 00 01 46 0b cc e8 40 00 28d+18:41:39.694  READ FPDMA QUEUED
  60 00 08 00 00 00 01 46 0b cc e0 40 00 28d+18:41:39.694  READ FPDMA QUEUED
  60 00 08 00 00 00 01 46 0b cc d8 40 00 28d+18:41:39.694  READ FPDMA QUEUED

Error 31 [6] occurred at disk power-on lifetime: 32953 hours (1373 days + 1 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 c0 00 01 46 0b cc f8 40 00  Error: UNC at LBA = 0x1460bccf8 = 5470145784

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 04 00 00 58 00 01 46 0b e4 00 40 00 28d+18:41:36.065  READ FPDMA QUEUED
  60 04 00 00 50 00 01 46 0b e0 00 40 00 28d+18:41:36.065  READ FPDMA QUEUED
  60 04 00 00 48 00 01 46 0b dc 00 40 00 28d+18:41:36.064  READ FPDMA QUEUED
  60 04 00 00 40 00 01 46 0b d8 00 40 00 28d+18:41:36.064  READ FPDMA QUEUED
  60 04 00 00 18 00 01 46 0b d4 00 40 00 28d+18:41:36.064  READ FPDMA QUEUED

Error 30 [5] occurred at disk power-on lifetime: 25310 hours (1054 days + 14 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 50 f9 04 67 40 00  Error: UNC at LBA = 0x150f90467 = 5653464167

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 01 00 38 00 01 50 f9 04 67 40 00     06:50:41.775  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 e0 00     06:50:41.473  READ LOG EXT
  60 00 01 00 30 00 01 50 f9 04 67 40 00     06:50:41.311  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 e0 00     06:50:41.007  READ LOG EXT
  60 00 01 00 28 00 01 50 f9 04 67 40 00     06:50:40.772  READ FPDMA QUEUED

Error 29 [4] occurred at disk power-on lifetime: 25310 hours (1054 days + 14 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 50 f9 04 67 40 00  Error: UNC at LBA = 0x150f90467 = 5653464167

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 01 00 30 00 01 50 f9 04 67 40 00     06:50:41.311  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 e0 00     06:50:41.007  READ LOG EXT
  60 00 01 00 28 00 01 50 f9 04 67 40 00     06:50:40.772  READ FPDMA QUEUED
  61 00 01 00 20 00 01 50 f9 04 66 40 00     06:50:40.767  WRITE FPDMA QUEUED
  61 00 01 00 18 00 01 50 f9 04 66 40 00     06:50:40.767  WRITE FPDMA QUEUED

Error 28 [3] occurred at disk power-on lifetime: 25310 hours (1054 days + 14 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 50 f9 04 67 40 00  Error: UNC at LBA = 0x150f90467 = 5653464167

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 01 00 28 00 01 50 f9 04 67 40 00     06:50:40.772  READ FPDMA QUEUED
  61 00 01 00 20 00 01 50 f9 04 66 40 00     06:50:40.767  WRITE FPDMA QUEUED
  61 00 01 00 18 00 01 50 f9 04 66 40 00     06:50:40.767  WRITE FPDMA QUEUED
  61 00 01 00 10 00 01 50 f9 04 66 40 00     06:50:40.767  WRITE FPDMA QUEUED
  61 00 01 00 08 00 01 50 f9 04 66 40 00     06:50:40.767  WRITE FPDMA QUEUED

Error 27 [2] occurred at disk power-on lifetime: 25310 hours (1054 days + 14 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 50 f9 04 66 40 00  Error: UNC at LBA = 0x150f90466 = 5653464166

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 01 00 f0 00 01 50 f9 04 66 40 00     06:50:40.301  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 e0 00     06:50:39.997  READ LOG EXT
  60 00 01 00 e8 00 01 50 f9 04 66 40 00     06:50:39.834  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 e0 00     06:50:39.531  READ LOG EXT
  60 00 01 00 e0 00 01 50 f9 04 66 40 00     06:50:39.364  READ FPDMA QUEUED

Error 26 [1] occurred at disk power-on lifetime: 25310 hours (1054 days + 14 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 50 f9 04 66 40 00  Error: UNC at LBA = 0x150f90466 = 5653464166

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 01 00 e8 00 01 50 f9 04 66 40 00     06:50:39.834  READ FPDMA QUEUED
  2f 00 00 00 01 00 00 00 00 00 10 e0 00     06:50:39.531  READ LOG EXT
  60 00 01 00 e0 00 01 50 f9 04 66 40 00     06:50:39.364  READ FPDMA QUEUED
  61 00 01 00 d8 00 01 50 f9 04 65 40 00     06:50:39.358  WRITE FPDMA QUEUED
  61 00 01 00 d0 00 01 50 f9 04 65 40 00     06:50:39.358  WRITE FPDMA QUEUED

Error 25 [0] occurred at disk power-on lifetime: 25310 hours (1054 days + 14 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 00 00 01 50 f9 04 66 40 00  Error: UNC at LBA = 0x150f90466 = 5653464166

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 01 00 e0 00 01 50 f9 04 66 40 00     06:50:39.364  READ FPDMA QUEUED
  61 00 01 00 d8 00 01 50 f9 04 65 40 00     06:50:39.358  WRITE FPDMA QUEUED
  61 00 01 00 d0 00 01 50 f9 04 65 40 00     06:50:39.358  WRITE FPDMA QUEUED
  61 00 01 00 c8 00 01 50 f9 04 65 40 00     06:50:39.358  WRITE FPDMA QUEUED
  61 00 01 00 c0 00 01 50 f9 04 65 40 00     06:50:39.358  WRITE FPDMA QUEUED

SMART Extended Self-test Log Version: 1 (1 sectors)
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

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:                        Stand-by (1)
Current Temperature:                    25 Celsius
Power Cycle Min/Max Temperature:     23/31 Celsius
Lifetime    Min/Max Temperature:     12/41 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:      0/60 Celsius
Min/Max Temperature Limit:           -41/85 Celsius
Temperature History Size (Index):    478 (177)

Index    Estimated Time   Temperature Celsius
 178    2024-04-17 14:52    27  ********
 ...    ..( 58 skipped).    ..  ********
 237    2024-04-17 15:51    27  ********
 238    2024-04-17 15:52    26  *******
 ...    ..(  2 skipped).    ..  *******
 241    2024-04-17 15:55    26  *******
 242    2024-04-17 15:56    25  ******
 243    2024-04-17 15:57    25  ******
 244    2024-04-17 15:58    24  *****
 ...    ..(357 skipped).    ..  *****
 124    2024-04-17 21:56    24  *****
 125    2024-04-17 21:57     ?  -
 126    2024-04-17 21:58    24  *****
 ...    ..(  4 skipped).    ..  *****
 131    2024-04-17 22:03    24  *****
 132    2024-04-17 22:04    25  ******
 ...    ..(  3 skipped).    ..  ******
 136    2024-04-17 22:08    25  ******
 137    2024-04-17 22:09    26  *******
 ...    ..( 13 skipped).    ..  *******
 151    2024-04-17 22:23    26  *******
 152    2024-04-17 22:24    27  ********
 ...    ..( 24 skipped).    ..  ********
 177    2024-04-17 22:49    27  ********

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

Device Statistics (GP/SMART Log 0x04) not supported

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           11  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2           12  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  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      2594442  Vendor specific