pool.import._on_boot is stuck, all apps are gone, dashboard is empty

[BrandX]

Apologies if this is already covered by a previous post. I did search, but no results seemed to fit my specific issue/circumstances. My TrueNAS (v22.0.2) machine is running plex, unifi, lancache & lancache_dns apps. DHCP, NUT and adblocking are handled on a separate pfSense machine.
Last night, after a day of working remotely over the internet, I closed my connection to work and started cooking dinner. As I was cooking dinner, my partner told me that our internet had stopped working. I dig a little and hey, what-do-you-know, its a DNS issue.

DHCP on pfSense points clients at the lancache_dns app. That app is not running. None of my Docker apps are running. None of the apps appear in installed, available or images. Even the catalogues are empty. The dashboard is empty. Storage is empty. gulp.

There are running tasks in the task manager:

I watched the pool.import_on_boot stay at 80% for 30 minutes then tried a reboot. Once I got back into the GUI, I checked and no change. I let it run over overnight and no change. It is still stuck on 80%

I have some linux familiarity, but very little zfs exposure. I am not afraid of CLI. Any help to get my pool back and running and any help to figure out what happened would be greatly appreciated.

Thank you,

 

[BrandX]

TrueNAS Scale version typo. I have v22.02.0 installed. my apologies.

 

[BrandX]

If it helps, here is a photo of the OS loading.

What jumps out at me is the

Code:

PANIC: zfs: adding existent segment to range tree (offset=3fc006ba000 size=18000)

line after the start job for Import zfs pools

Somehow my pool was corrupted, I guess?

 

[BrandX]

Where can I look to figure how to recover from this? My NASs is currently stuck on the pool.import_on_boot and doing nothing.

 

[Alecmascot]

It probably won't help you but there is a bug report for this but it is not a fix for a corrupted pool.

Importing corrupted pool causes PANIC: zfs: adding existent segment to range tree · Issue #13483 · openzfs/zfs

System information Type Version/Name Distribution Name Debian Distribution Version bullseye (11) Kernel Version 5.10.0-14 Architecture amd64 OpenZFS Version zfs-2.0.3-9 zfs-kmod-2.0.3-9 Tried on an...

github.com

There are suggested tuneables about half way through the report that might help

 

[BrandX]

Thank you. I am trying to digest this now.

 

[BrandX]

Can someone help me out with how to enter these tuneables? Also, is there a way I can save a copy of my pool in its current state? I'm pretty new to truenas.