mreschke / Proxmox secondary_vm.sh

#!/bin/bash # Set a secondary VM to use second NVIDIA card as PCI Passthrough # And the bottom USB card. And REMOVE those 2 PCI devices from any other VM # mReschke 2025-03-16 # Input secondary_vmid="$1" #primary=109 # Validate if [ "$secondary_vmid" == "" ]; then echo "You must provide a VMID you want to be the seconday" exit 1 fi # Validate secondary is NOT our primary VM #if [ "$secondary_vmid" == "$primary" ]; then # echo "You cannot use 109 as a secondary VM, that is your primary" # exit 1 #fi # Define PCI devices to add/remove hostpci0="0000:01:00,pcie=1,x-vga=1" hostpci1="0000:82:00,pcie=1" # Get all VMID from qm list vmids=($(qm list | tail -n +2 | cut -d\ -f8)) # Loop each VM and remove our pci devices if exist found_secondary=0 for vmid in "${vmids[@]}" do echo "Analyzing VMID $vmid" if [ "$vmid" == "$secondary_vmid" ]; then found_secondary=1 fi # TODO check status # qm status 102 | cut -d: -f2 | xargs # will be running or stopped # if running and PCI device exist, do NOT remove it # and if I can't remove it, do NOT add it second VM # Remove hostpci0 if matches our desired device if result=$(qm config $vmid | grep $hostpci0); then echo " VMID $vmid has option $result" qm set $vmid --delete hostpci0 echo " VMID $vmid removed hostpci0" fi # Remove hostpci1 is matches our desired device if result=$(qm config $vmid | grep $hostpci1); then echo " VMID $vmid has option $result" qm set $vmid --delete hostpci1 echo " VMID $vmid removed hostpci1" fi done # Finally add our PIC devices to the desired VMID if [ "$found_secondary" == 1 ]; then echo echo "Setting secondary VM to $secondary_vmid" qm set $secondary_vmid -hostpci0 $hostpci0 qm set $secondary_vmid -hostpci1 $hostpci1 else echo "The secondary VMID $secondary_vmid was not found in qm list, not setting secondary" exit 1 fi #root@dynepyc:/usr/local/bin# qm config 107|grep hostpci #hostpci0: 0000:01:00,pcie=1,x-vga=1 #hostpci1: 0000:82:00,pcie=1