Hello, i'm not sure i'm allowed to post here. (in the case i'm not. Tell me, i will do another topic) But i have exact same problem if anyone can help here is mine.
Context: " i changed motherboard and update bios then server crashed 2 times and i think it was related to fast boot but not sure"

Thank you

cloudbissou-diagnostics-20251205-1005.zip

Edited December 5, 2025Dec 5 by Positive thought

Better to have your own thread so nobody gets confused. I have split your post,

Post the output from btrfs fi show

Thank you for creating the post.
I had VMD enabled in the BIOS; I read somewhere that it needed to be disabled, hoping that would change something, but without success so far.

I had two NVMe drives working together (they form a single volume, from what I understand about the pool) and one NVMe drive in pass-through mode on which a VM was running.
Since it wouldn't mount the disks, I tried different configurations, so now I don't know which NVMe drive is supposed to do what...

Here is new diag with VMD disabled :

cloudbissou-diagnostics-20251205-2021.zip

Edited December 5, 2025Dec 5 by Positive thought
new diag,

Which filesystem was the pool? Also post the output form blkid and zpool import

I would say BTRFS

Edited December 6, 2025Dec 6 by Positive thought

There is no btrfs (or zfs) filesystem being detected; post the output for

fdisk -l /dev/nvme0n1

fdisk -l /dev/nvme1n1

I don't think deleting the NVMe drives from the pool is really a problem anyway. What I want to be sure of is not deleting the NVMe drive from the VM itself. Do you think I'll be able to recover the VM's data?

The devices don't even have a partition. Any idea what happened there?

15 hours ago, Positive thought said:

What I want to be sure of is not deleting the NVMe drive from the VM itself. Do you think I'll be able to recover the VM's data?

Not sure I follow. Were the devices passed through to a VM in the past? Or you just meant you had the VM vdisk in the pool?