[SOLVED] adaptec raid 8405e v2 vm passthrough

[AndreyR]

Hello everyone, I decided to make myself a personal cloud storage, for this I purchased an adaptec raid 8405e v2 controller and passthrow it into a virtual machine, I ran into the problem that after starting the virtual machine I get an errors. I try to change scsi controller option as advised in the posts here on the forum, but it didn't help.

balloon: 0
bios: ovmf
boot: order=ide2;net0
cores: 4
cpu: host
efidisk0: local-lvm:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
hostpci0: 0000:42:00
ide2: local:iso/ubuntu-22.04.3-desktop-amd64.iso,media=cdrom,size=4919592K
machine: q35
memory: 4096
meta: creation-qemu=8.0.2,ctime=1715110063
net0: e1000=BC:24:11:03:43:5B,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: local-lvm:vm-100-disk-1,backup=0,discard=on,iothread=1,size=32G
smbios1: uuid=ec40945c-943e-41fc-8857-d3880c7e791f
sockets: 1
vcpus: 4
vmgenid: a22fb3bd-2b8b-4441-99ca-c3c34aa9da81

proxmox 8.0-3

 

[AndreyR]

I found this in dmesg log, number of core always different

 

[AndreyR]

https://forum.proxmox.com/threads/amd-epyc-pcie-passthrough-flr-error.106070/ fixed by disabling flr for raid controller like in this post