FreeNAS degraded zpool status

[IT Dept]

I am running an older build, I know: FreeNAS-9.10-STABLE-201606270534 (dd17351)

I get this email every day

Code:

The volume backups (ZFS) state is DEGRADED: One or more devices could not be opened. Sufficient replicas exist for the pool to continue functioning in a degraded state.

When I run zpool status, I see

Code:

  pool: backups
 state: DEGRADED
status: One or more devices could not be opened.  Sufficient replicas exist for
        the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
   see: http://illumos.org/msg/ZFS-8000-2Q
  scan: scrub repaired 0 in 6h41m with 0 errors on Sun Sep 25 06:41:20 2022
config:

        NAME                                            STATE     READ WRITE CKSUM
        backups                                         DEGRADED     0     0     0
          mirror-0                                      DEGRADED     0     0     0
            18229308089458156847                        UNAVAIL      0     0     0  was /dev/gptid/241fd343-88c0-11e5-8355-0030486402d6
            gptid/2498c51d-88c0-11e5-8355-0030486402d6  ONLINE       0     0     0
          mirror-1                                      DEGRADED     0     0     0
            3233871229197313441                         UNAVAIL      0     0     0  was /dev/gptid/251d592d-88c0-11e5-8355-0030486402d6
            gptid/25a42a0a-88c0-11e5-8355-0030486402d6  ONLINE       0     0     0

errors: No known data errors

  pool: freenas-boot
 state: ONLINE
  scan: scrub repaired 0 in 0h4m with 0 errors on Thu Nov  3 03:49:51 2022
config:

        NAME                                          STATE     READ WRITE CKSUM
        freenas-boot                                  ONLINE       0     0     0
          gptid/ed13c376-87ea-11e5-a72e-0030486402d6  ONLINE       0     0     0

errors: No known data errors

In Storage >> View Disks, I have ada0 and ada1 listed only

Under, Storage >> Backups >> Volume Status

I dont understand what the UNAVAIL lines are referencing. Are these physical drives that needs to be replaced and if so, how do I locate/isolate them so I know which one to pull?

I ran diskinfo -cv ada0, ada0p1, ada0p2, ada1, ada1p1, ada1p2 and they come back with sector read times.

I am kind of at a standpoint and trying to wrap my head around this part.

Any help will be appreciated.

Thanks

 

[Arwen]

ZFS thinks your 2 UNAVAIL drives are gone, as in un-available for any use.

Simply follow the normal procedure to verify access, SMART data, cables, power and such to the drives. If they seem to work, restore them to functionality. Otherwise replace them.

As for how to do that, read the documentation. Some of us use short cuts that may not apply in your case, so I can't advise beyond that. Perhaps someone else can help further.

 

[IT Dept]

I was looking into this more.

> geom disk list
shows ada0 and ada1 only.

> smartctl -i /dev/ada0 & smartctl -i /dev/ada1
shows the disk information

how do I find the disk to pull for those two unavail disks?

 

[Arwen]

If the 2 UNAVAIL disks don't show up in a list, then they are either completely dead or un-powered. Again, trouble shooting this is beyond what I can help. I use short cuts based on what I see, so what I would do is not possible to describe.

 

[NugentS]

Make a note of the serial numbers of the drives that are working, power down and pull the other drives. Then replace, power up and hope the pool comes back up
I am assuming that that old a FreeNAS will show the serial numbers if you ask nicely, no idea how though its that old.