One or more devices has experienced an unrecoverable error.

[intelligence]

Woke up to some error on my system:
Pool Storage state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected

What's going on?

zpool status -v

Code:

  pool: Storage

 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 in progress since Sun Dec 15 00:00:01 2019

    27.3T scanned at 739M/s, 25.3T issued at 686M/s, 29.6T total

    16K repaired, 85.52% done, 0 days 01:49:20 to go

config:
    NAME                                            STATE     READ WRITE CKSUM
    Storage                                         ONLINE       0     0     0
      raidz2-0                                      ONLINE       0     0     0
        gptid/fe8c1d8c-3122-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/ff6191f0-3122-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/0020bae5-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/00e8c78a-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     1
        gptid/01a3e0ce-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/026fd70f-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/032b6792-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/03f407d5-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/04cbf832-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     0
        gptid/058360d8-3123-11e8-adc8-d0509946c62a  ONLINE       0     0     0



errors: No known data errors

glabel status

Code:

                                      Name  Status  Components
gptid/fe8c1d8c-3122-11e8-adc8-d0509946c62a     N/A  ada0p2
gptid/ff6191f0-3122-11e8-adc8-d0509946c62a     N/A  ada1p2
gptid/0020bae5-3123-11e8-adc8-d0509946c62a     N/A  ada2p2
gptid/00e8c78a-3123-11e8-adc8-d0509946c62a     N/A  ada3p2
gptid/20a037d1-312b-11e8-adc8-d0509946c62a     N/A  ada4p2
gptid/01a3e0ce-3123-11e8-adc8-d0509946c62a     N/A  da0p2
gptid/026fd70f-3123-11e8-adc8-d0509946c62a     N/A  da1p2
gptid/032b6792-3123-11e8-adc8-d0509946c62a     N/A  da2p2
gptid/03f407d5-3123-11e8-adc8-d0509946c62a     N/A  da3p2
gptid/04cbf832-3123-11e8-adc8-d0509946c62a     N/A  da4p2
gptid/058360d8-3123-11e8-adc8-d0509946c62a     N/A  da5p2
                              label/efibsd     N/A  da6p1
gptid/8e7c48d7-2d3f-11e8-8b30-d0509946c62a     N/A  da6p1
gptid/fe73fd8e-3122-11e8-adc8-d0509946c62a     N/A  ada0p1

smartctl -a /dev/ada3

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:     Seagate NAS HDD
Device Model:     ST4000VN000-2AH166
Serial Number:    WDH00DZN
LU WWN Device Id: 5 000c50 09babfd7c
Firmware Version: SC60
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5980 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Sun Dec 15 10:48:51 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:  (0x82)    Offline data collection activity
                    was completed without error.
                    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:         (  581) 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:      (   1) minutes.
Extended self-test routine
recommended polling time:      ( 619) minutes.
Conveyance self-test routine
recommended polling time:      (   2) minutes.
SCT capabilities:            (0x50bd)    SCT Status supported.
                    SCT Error Recovery Control supported.
                    SCT Feature Control supported.
                    SCT Data Table supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   083   064   044    Pre-fail  Always       -       197620872
  3 Spin_Up_Time            0x0003   094   094   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       19
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   086   060   045    Pre-fail  Always       -       357828310
  9 Power_On_Hours          0x0032   086   086   000    Old_age   Always       -       12962 (82 51 0)
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       42
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   067   052   040    Old_age   Always       -       33 (Min/Max 20/34)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       44
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       136
194 Temperature_Celsius     0x0022   033   048   000    Old_age   Always       -       33 (0 20 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       13009 (246 124 0)
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       9824590112
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       80570270232

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
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.

 

[G8One2]

You have a failed disk that needs immediate replacement.

 

[Alecmascot]

You have a failed disk that needs immediate replacement.

There has been one checksum error...what are you looking at ?

 

[G8One2]

7 Seek_Error_Rate 0x000f 086 060 045 Pre-fail Always - 357828310
1 Raw_Read_Error_Rate 0x000f 083 064 044 Pre-fail Always - 197620872

Your SMART data shows you need to replace the drive

 

[Alecmascot]

Not applicable to Seagate drives.

https://serverfault.com/questions/313649/how-to-interpret-this-smartctl-smartmon-data

 

[G8One2]

Then dont replace the drive leave it in. That warning means you have a failed drive. The device
gptid/00e8c78a-3123-11e8-adc8-d0509946c62a ONLINE 0 0 1 has the checksum error which is
gptid/00e8c78a-3123-11e8-adc8-d0509946c62a N/A ada3p2
or the smartctl -a /dev/ada3 you ran SMART data on. The system is telling you to replace the drive.

 

[Jessep]

It doesn't look like you have periodic SMART tests being run. Start daily short and weekly long SMART tests.

At the very least watch that drive, if it's on the way out it would make sense to get a cold spare tested/burned in ready to go on the shelf.

 

[intelligence]

Thanks for your replies!

So can someone fill in on what I should be looking at for drives like these to be able to understand if it's failing or not?

 

[blueether]

Pending sectors is one, and run long SMART tests ( I do 2 weekly) and short SMART tests (I do these daily).

I would run a short then long SMART test on that drive now

ZFS found and fixed the single checksum error that was on the vdev, at the moment it's not a problem but watch it and do SMART tests

 

[intelligence]

I would run a short then long SMART test on that drive now

And look for?

 

[blueether]

And look for?

to see if the long test fails on any blocks

I'm not a SMART guru so I'll make no clames about how far from failing a drive is, but with only 1.5 years of running it may still be in warranty?

 

[G8One2]

I've always had horrible luck with seagate drives in my FreeNas server. Pretty much don't use them anymore. Could just be the system they're in or how Im using them, but I only ever use WD Red drives anymore.