SOLVED Yet another thread on Current Pending Sectors and bad blocks

[YoonAddicting]

In the last couple of days there have begun to appear a couple of current pending sectors, out of seemingly nowhere.

The events are as follows:

Code:

* Device: /dev/ada3, failed to read SMART Attribute Data
* Device: /dev/ada3, 1 Currently unreadable (pending) sectors

The day after I got the following error while running a scrub:

Code:

* The volume Stripped-Mirrors-6TB state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. 

The output after said scrub is:

Code:

  pool: Stripped-Mirrors-6TB
state: ONLINE
status: One or more devices has experienced an unrecoverable error.  An
        attempt was made to correct the error.  Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
        using 'zpool clear' or replace the device with 'zpool replace'.
   see: http://illumos.org/msg/ZFS-8000-9P
  scan: scrub repaired 26M in 0 days 08:03:29 with 0 errors on Fri Feb  1 21:23:29 2019
config:

        NAME                                            STATE     READ WRITE CKSUM
        Stripped-Mirrors-6TB                            ONLINE       0     0     0
          mirror-0                                      ONLINE       0     0     0
            gptid/ae294343-20f3-11e9-81a4-6805ca3c5db2  ONLINE       0     0     0
            gptid/aff378a4-20f3-11e9-81a4-6805ca3c5db2  ONLINE       0     0     0
          mirror-1                                      ONLINE       0     0     0
            gptid/dceee641-20f3-11e9-81a4-6805ca3c5db2  ONLINE       0     0     0
            gptid/dec327a9-20f3-11e9-81a4-6805ca3c5db2  ONLINE       0     0    38

errors: No known data errors

Now i've just completed a long self test on the drive with CKSUM value with the following output:

Code:

smartctl 6.6 2017-11-05 r4594 [FreeBSD 11.2-STABLE amd64] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Red
Device Model:     WDC WD30EFRX-68EUZN0
Serial Number:    WD-WCC4N4ALL30X
LU WWN Device Id: 5 0014ee 262cf644f
Firmware Version: 82.00A82
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 [for details use: -P show]
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:    Sat Feb  2 16:12:08 2019 CET
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:  (0x85)    Offline data collection activity
                    was aborted by an interrupting command from host.
                    Auto Offline Data Collection: Enabled.
Self-test execution status:      ( 113)    The previous self-test completed having
                    the read element of the test failed.
Total time to complete Offline
data collection:         (39240) 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:      ( 394) 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          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always       -       444
  3 Spin_Up_Time            0x0027   197   174   021    Pre-fail  Always       -       5133
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       331
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   080   080   000    Old_age   Always       -       15110
10 Spin_Retry_Count        0x0032   100   100   000    Old_age   Always       -       0
11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       0
12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       327
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       55
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1638
194 Temperature_Celsius     0x0022   120   112   000    Old_age   Always       -       30
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       4
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       12

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: read failure       10%     15108         1264088504
# 2  Extended offline    Aborted by host               20%     15094         -
# 3  Short offline       Completed without error       00%     14963         -
# 4  Short offline       Completed without error       00%     14927         -
# 5  Short offline       Completed without error       00%     13648         -
# 6  Short offline       Completed without error       00%      2937         -
# 7  Short offline       Completed without error       00%      1750         -

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.

Back when I purchased the drive, the retailer accidently sent me an OEM drive which I couldn't register for a warranty, but promised to honor the manufacturer warranty themselves. I still have 160 days left on this warranty.
Would you by the values of the zpool status and the smart output say that I should RMA the drive?

EDIT:
My latest backup is after I've begun getting the bad blocks. Is there any way for me to know which files are affected by this?

 

[Johnnie Black]

I should RMA the drive?

IMO definitely yes, only a few pending sectors, but besides the failed SMART test non zero Raw_Read_Error_Rate and Multi_Zone_Error_Rate are a very bad sign on WD drives.

Is there any way for me to know which files are affected by this?

No files are affected, ZFS corrected the errors:

Applications are unaffected.