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Have I lost all my data? Newbie seeking help diagnosing and fixing missing ZFS pool

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After doing some tinkering around deleting shares by moving their contents to temporary folders, and messing around with Docker settings, I went to reboot my NAS, but found that it got hung on the reboot and wouldn't come back on. I then rebooted it directly from the machine itself, pressing the power button once to reboot it. It now loads up the Unraid service, but my ZFS pool is missing. I use Unraid with 3x HDDs in RAIDZ1 and don't use any other main arrays or pools for use/storage, besides the compulsory array drive (a small SSD I installed) plus a flash drive.

 

It now shows that my 3x HDDs are "unassigned devices", which is obviously really concerning. I don't know if this means I have somehow wiped the drives clean, or if there's anything I can do to restore things how they were.

 

I'm attaching the diagnostics of my NAS:

1 - BEFORE I messed things up this morning

2 - AFTER messing things up

 

Advice and support on how to (hopefully) restore everything would be really appreciated!

Screenshot 2024-10-30 at 16.38.38.jpg

Screenshot 2024-10-30 at 17.47.59.jpg

tower-diagnostics-20241030-1753 (after problems).zip nas-diagnostics-20241030-1046 (before problems).zip

  • Community Expert

Post the output from

zpool import

 

  • Author
11 minutes ago, JorgeB said:

Post the output from

zpool import

 

"

root@Tower:~# zpool import
   pool: zfs
     id: 11624769833213067975
  state: ONLINE
status: Some supported features are not enabled on the pool.
        (Note that they may be intentionally disabled if the
        'compatibility' property is set.)
 action: The pool can be imported using its name or numeric identifier, though
        some features will not be available without an explicit 'zpool upgrade'.
 config:

        zfs         ONLINE
          raidz1-0  ONLINE
            sdb1    ONLINE
            sdd1    ONLINE
            sde1    ONLINE
root@Tower:~# "

 

Something else I'm noticing is that the name of the device "Tower" is not what the device was called before this mess happened it was called "NAS" before...

  • Community Expert
8 minutes ago, icarus69 said:

Something else I'm noticing is that the name of the device "Tower" is not what the device was called before this mess happened it was called "NAS" before...

That suggests a flash drive problem, and also probably what caused the pool devices to become unassigned, but the pool looks fine, just assign all 3 devices, start the array, and it should re-import.

  • Author
11 minutes ago, JorgeB said:

That suggests a flash drive problem, and also probably what caused the pool devices to become unassigned, but the pool looks fine, just assign all 3 devices, start the array, and it should re-import.

Ok, so just before I go ahead and do that (so I don't make a mistake) I just need to re-add the drives to a ZFS pool and hit add pool? Does it matter which drives go in which ZFS device (ZFS, ZFS 2, ZFS 3)?

Screenshot 2024-10-30 at 18.56.20.jpg

  • Community Expert
6 minutes ago, icarus69 said:

I just need to re-add the drives to a ZFS pool and hit add pool?

Yep.

 

6 minutes ago, icarus69 said:

Does it matter which drives go in which ZFS device (ZFS, ZFS 2, ZFS 3)?

Not with v7.0.0, it will auto sort them based on the the zpool status/import output.

  • Author
4 minutes ago, JorgeB said:

Yep.

 

Not with v7.0.0, it will auto sort them based on the the zpool status/import output.

Ok great, things are back up and running!

 

Do I just need to wait some time before "NAS" is restored as the device name rather than "Tower"? Is there anything else I should do, or any checks or tests I should run?

  • Community Expert
3 minutes ago, icarus69 said:

Do I just need to wait some time before "NAS" is restored as the device name rather than "Tower"?

You will need to change it again in Settings.

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