Positive thought

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?

I would say BTRFS

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

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