Bad Drive

[JohnFLi]

Hello all.
I have a bad drive that I need to deal with.

Now can I just yank out the offending drive and slide a new one in it's place?

 

[JohnDigital]

Yeah pretty much. Use the GUI to remove the disk, then physically remove the disk, install the new disk, trigger replacement using the gui, wait for resilver.

 

[JohnFLi]

Sounds good....BUT, I'm a bit unsure of a couple of things:
Freenas is saying

CRITICAL: March 22, 2021, 2:38 a.m. - The volume PhotoArchive state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected.

Yet, when I go to that volume and look at the disks, the one list (in my original post pic) is not part of that volume. I went and looked at teh disks on all of the volumes, and that bad disk isn't part of anything.

Is there a command or something I can run to verify that it isn't part of anythign?

 

[Etorix]

zpool status -v and camcontrol devlist. Within [CODE] tags please, especially considering your number of drives.

 

[JohnFLi]

Thank you for your assistance in this

Code:

zpool status -v
  pool: PhotoArchive
 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 0 in 0 days 19:33:00 with 0 errors on Sun Feb  7 19:33:08 2021
config:

        NAME                                            STATE     READ WRITE CKSUM
        PhotoArchive                                    ONLINE       0     0     0
          raidz2-0                                      ONLINE       0     0     0
            gptid/e1d0a939-2bbe-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     2
            gptid/e25e697c-2bbe-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/e2f06a22-2bbe-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/e36d1caf-2bbe-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/e3f9afed-2bbe-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/e47daea6-2bbe-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
          raidz2-1                                      ONLINE       0     0     0
            gptid/64b1bb8a-2bc0-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/65b5dbd1-2bc0-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/664e579a-2bc0-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/67682e7f-2bc0-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/67f4f0a1-2bc0-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0
            gptid/690c69bb-2bc0-11e8-8c1e-a0369fb4a0dc  ONLINE       0     0     0

errors: No known data errors

Code:

root@G1PPFreeNas01:~ # camcontrol devlist
<SanDisk SD8SBAT128G1122 Z2333000>  at scbus0 target 0 lun 0 (pass0,ada0)
<SanDisk SD8SBAT128G1122 Z2333000>  at scbus1 target 0 lun 0 (pass1,ada1)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 0 lun 0 (pass2,da0)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 1 lun 0 (pass3,da1)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 2 lun 0 (pass4,da2)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 3 lun 0 (pass5,da3)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 4 lun 0 (pass6,da4)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 5 lun 0 (pass7,da5)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 6 lun 0 (pass8,da6)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 7 lun 0 (pass9,da7)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 8 lun 0 (pass10,da8)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 9 lun 0 (pass11,da9)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 10 lun 0 (pass12,da10)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 11 lun 0 (pass13,da11)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 12 lun 0 (pass14,da12)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 13 lun 0 (pass15,da13)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 14 lun 0 (pass16,da14)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 15 lun 0 (pass17,da15)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 16 lun 0 (pass18,da16)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 17 lun 0 (pass19,da17)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 18 lun 0 (pass20,da18)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 19 lun 0 (pass21,da19)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 20 lun 0 (pass22,da20)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 21 lun 0 (pass23,da21)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 22 lun 0 (pass24,da22)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 23 lun 0 (pass25,da23)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 24 lun 0 (pass26,da24)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 25 lun 0 (pass27,da25)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 26 lun 0 (pass28,da26)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 27 lun 0 (pass29,da27)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 28 lun 0 (pass30,da28)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 29 lun 0 (pass31,da29)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 30 lun 0 (pass32,da30)
<ATA WDC WD101KRYZ-01 01.0>        at scbus11 target 31 lun 0 (pass33,da31)
<ATA WDC WD101KRYZ-01 01.0>        at scbus12 target 0 lun 0 (pass34,da32)
<ATA WDC WD101KRYZ-01 01.0>        at scbus12 target 1 lun 0 (pass35,da33)
<ATA WDC WD101KRYZ-01 01.0>        at scbus12 target 2 lun 0 (pass36,da34)
<ATA WDC WD101KRYZ-01 01.0>        at scbus12 target 3 lun 0 (pass37,da35)
<ATA WDC WD101KRYZ-01 01.0>        at scbus12 target 4 lun 0 (pass38,da36)
<ATA WDC WD101KRYZ-01 01.0>        at scbus12 target 5 lun 0 (pass39,da37)
<ATA WDC WD101KRYZ-01 01.0>        at scbus12 target 6 lun 0 (pass40,da38)
<Kingston DataTraveler 3.0 PMAP>   at scbus13 target 0 lun 0 (pass41,da39)

 

[Etorix]

So one drive (should be /dev/da30) had two checksum errors. Probably already repaired by ZFS…
The next step should be smartctl -a /dev/daXX for this drive.

 

[JohnDigital]

You might also try clearing the error using zpool clear tank then do a fresh scrub zpool scrub tank and see what you get. If there are in fact errors this new scrub will find and repair. I also agree that a full battery of SMART tests smartctl -t long /dev/da## (or just reading the SMART data as @Etorix said if you do these frequently) is the next immediate step.

 

[JohnFLi]

thank you for your suggestions.
I ran

Code:

zpool clear PhotoArchive gptid/e1d0a939-2bbe-11e8-8c1e-a0369fb4a0dc

That cleared the error, then i ran

Code:

zpool status -v

it now shows everythign is good again.

I will try scrubbing the tank and see what happens

 

[JohnFLi]

Well, scrubbing completed and no reports of disk issues.

Thank you all for your assistance.