Proxmox PCI Switcher

Switch among Guest VMs organized by Resource Pool.

main features:

• ONE GPU card, N OS (at once)
• Guest VM command client
• Handler power off
• Reset framebuffer

TOC

• Proxmox Configuration
  • Create Resource Pool
  • Assign Guest VM
• Install Proxmox Snippet
  • Proxmox Config
    • Snippet Variables
    • Assign VM to Snippet
• Guest Client Switcher
  • List Resources
  • Switch Resource
  • Using GUI

Proxmox Configuration

Create Resource Pool

Assign Guest VM

Install Proxmox Snippet

curl -fsSL https://github.com/rosineygp/proxmox-pci-switcher/releases/latest/download/pci-group-switcher.sh > pci-group-switcher.sh

# set execution permission
chmod +x pci-group-switcher.sh

# move for your snippets <storage>/<folder>

Proxmox Config

Snippet Variables

NAME	Default	Description
_POOL_NAME *	<auto_discovery>	The name of Resource Pool
_SHUTDOWN_TIMEOUT	300	Checking if resource was released (Current VM Running is down)
_RESET_GPU_FRAMEBUFFER	true	Reset GPU framebuffer
_PIN_CPU_IDS	false	Pin CPU using taskset (syntax equals taskset cpu-list parameter)
_RENICE_PRIORITY	false	Renice process using renice

All variables must be changed in pci-group-switcher.sh at proxmox ve.

_POOL_NAME * By default it will scan for VMID in all Resource Pools, in case of long delays replace function call to Resource Pool name (eg. desktop, gpu, …).

The following variables can be passed using /etc/pve/qemu-server/<vmid>.vars file, the script will load variables from file if it exists.

If you need to overwrite an Default value set at /etc/environment the variable name without the _ prefix. (eg. RESET_GPU_FRAMEBUFFER=false)

Assign VM to Snippet

qm set <vmid> -hookscript <storage>:snippets/pci-group-switcher.sh

After proxmox configuration is possible to switch using proxmox api or web interface.

Guest Client Switcher

• requirements: python 3

pip install proxmox-pci-switcher

# create config folder
mkdir -p ~/.config/proxmox-pci-switcher/

# create config file
cat <<EOF > ~/.config/proxmox-pci-switcher/config.yaml
proxmox:
  host: '<ip or dns>'
  user: '<user>@<method>'
  password: '<password>'
  api_id: '<name>'          # only for api access
  api_token: '<token>'      # only for api access
  verify_ssl: false

gui:                        # optional
  theme: Dark               # Light or Dark

pools:
  - '<desktop>'
  - '<gpu-nvidia>'
  - '<gpu-amd>'

EOF

Edit config.yaml with your proxmox credentials and pools.

API access has priority over user and password access.

List Resources

proxmox-pci-switcher list

pool(s)       vmid  name             status    type
----------  ------  ---------------  --------  ------
desktop        119  catalina         stopped   qemu
desktop        116  win10-desktop    stopped   qemu
desktop        117  mini-desktop     stopped   qemu
desktop        103  u20-desktop      running   qemu
desktop        115  u20-srv-desktop  stopped   qemu

Switch Resource

# run command directly
proxmox-pci-switcher switch win10-desktop

# create a alias for better experience
alias windows="proxmox-pci-switcher switch win10-desktop"

# and just run
windows

Using GUI

proxmox-pci-switcher gui