smartd: Device: /dev/ada0, 8 Currently unreadable (pending) sectors persists

That smartd: Device: /dev/ada0, 8 Currently unreadable (pending) sectors problem which arose on Sunday is still around.

I’ve run a short test, a long test, and a ZFS scrub is now underway.

I may just replace the drive.

$ sudo smartctl -P show /dev/ada0
smartctl 6.4 2015-06-04 r4109 [FreeBSD 10.2-RELEASE-p9 amd64] (local build)
Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org

Drive found in smartmontools Database.  Drive identity strings:
MODEL:              TOSHIBA DT01ACA300
FIRMWARE:           MX6OABB0
match smartmontools Drive Database entry:
MODEL REGEXP:       TOSHIBA DT01ACA(025|032|050|075|100|150|200|300)
FIRMWARE REGEXP:    .*
MODEL FAMILY:       Toshiba 3.5" DT01ACA... Desktop HDD
ATTRIBUTE OPTIONS:  None preset; no -v options are required.

These messages are still appearing every 30 minutes:

Feb 15 22:22:48 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors
Feb 15 22:52:49 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors
Feb 15 23:22:49 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors
Feb 15 23:52:48 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors
Feb 16 00:22:48 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors
Feb 16 00:52:48 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors
Feb 16 01:22:49 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors
Feb 16 01:52:48 knew smartd[861]: Device: /dev/ada0, 8 Currently unreadable (pending) sectors

Any suggestion?

17 Feb 2016

I should have included the latest output:

# smartctl -a /dev/ada0
smartctl 6.4 2015-06-04 r4109 [FreeBSD 10.2-RELEASE-p9 amd64] (local build)
Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org
 
=== START OF INFORMATION SECTION ===
Model Family:     Toshiba 3.5" DT01ACA... Desktop HDD
Device Model:     TOSHIBA DT01ACA300
Serial Number:    Z2T4KGYAS
LU WWN Device Id: 5 000039 ff4c2131c
Firmware Version: MX6OABB0
User Capacity:    3,000,592,982,016 bytes [3.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Wed Feb 17 15:09:46 2016 UTC
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:  (0x84) Offline data collection activity
                    was suspended by an interrupting command from host.
                    Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0) The previous self-test routine completed
                    without error or no self-test has ever 
                    been run.
Total time to complete Offline 
data collection:        (25234) seconds.
Offline data collection
capabilities:            (0x5b) SMART execute Offline immediate.
                    Auto Offline data collection on/off support.
                    Suspend Offline collection upon new
                    command.
                    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:    (   1) minutes.
Extended self-test routine
recommended polling time:    ( 421) 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: 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     0x000b   100   100   016    Pre-fail  Always       -       0
  2 Throughput_Performance  0x0005   138   138   054    Pre-fail  Offline      -       76
  3 Spin_Up_Time            0x0007   147   147   024    Pre-fail  Always       -       422 (Average 359)
  4 Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       127
  5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0005   124   124   020    Pre-fail  Offline      -       33
  9 Power_On_Hours          0x0012   097   097   000    Old_age   Always       -       22528
 10 Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       42
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       135
193 Load_Cycle_Count        0x0012   100   100   000    Old_age   Always       -       135
194 Temperature_Celsius     0x0002   171   171   000    Old_age   Always       -       35 (Min/Max 18/46)
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       8
198 Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       126076
 
SMART Error Log Version: 1
Warning: ATA error count 65535 inconsistent with error log pointer 3
 
ATA Error Count: 65535 (device log contains only the most recent five errors)
    CR = Command Register [HEX]
    FR = Features Register [HEX]
    SC = Sector Count Register [HEX]
    SN = Sector Number Register [HEX]
    CL = Cylinder Low Register [HEX]
    CH = Cylinder High Register [HEX]
    DH = Device/Head Register [HEX]
    DC = Device Command Register [HEX]
    ER = Error register [HEX]
    ST = Status register [HEX]
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 65535 occurred at disk power-on lifetime: 22454 hours (935 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 SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 48 58 a9 f0 0b  Error: UNC 72 sectors at LBA = 0x0bf0a958 = 200321368
 
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 88 18 a9 f0 40 00   2d+04:41:12.561  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:41:08.684  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:41:04.933  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:41:01.082  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:40:57.258  READ DMA EXT
 
Error 65534 occurred at disk power-on lifetime: 22454 hours (935 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 SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 48 58 a9 f0 0b  Error: UNC 72 sectors at LBA = 0x0bf0a958 = 200321368
 
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 88 18 a9 f0 40 00   2d+04:41:08.684  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:41:04.933  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:41:01.082  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 f8 a8 f0 40 00   2d+04:40:57.258  READ DMA EXT
 
Error 65533 occurred at disk power-on lifetime: 22454 hours (935 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 SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 48 58 a9 f0 0b  Error: UNC 72 sectors at LBA = 0x0bf0a958 = 200321368
 
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 88 18 a9 f0 40 00   2d+04:41:04.933  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:41:01.082  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 f8 a8 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 d8 a8 f0 40 00   2d+04:40:57.258  READ DMA EXT
 
Error 65532 occurred at disk power-on lifetime: 22454 hours (935 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 SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 48 58 a9 f0 0b  Error: UNC 72 sectors at LBA = 0x0bf0a958 = 200321368
 
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 88 18 a9 f0 40 00   2d+04:41:01.082  READ DMA EXT
  25 00 88 18 a9 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 f8 a8 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 d8 a8 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 b8 a8 f0 40 00   2d+04:40:57.257  READ DMA EXT
 
Error 65531 occurred at disk power-on lifetime: 22454 hours (935 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 SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 48 58 a9 f0 0b  Error: UNC 72 sectors at LBA = 0x0bf0a958 = 200321368
 
  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 88 18 a9 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 f8 a8 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 d8 a8 f0 40 00   2d+04:40:57.258  READ DMA EXT
  25 00 20 b8 a8 f0 40 00   2d+04:40:57.257  READ DMA EXT
  25 00 20 70 a8 f0 40 00   2d+04:40:57.257  READ DMA EXT
 
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%     22468         -
# 2  Short offline       Completed without error       00%     22457         -
# 3  Extended offline    Completed without error       00%     17877         -
# 4  Extended offline    Completed without error       00%     17707         -
# 5  Extended offline    Aborted by host               90%     17694         -
# 6  Extended offline    Interrupted (host reset)      20%     17651         -
 
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.