Gave this a try on PVE 9.0.10 with latest enterprise updates. when i run `strings /usr/lib/x86_64-linux-gnu/libvirglrenderer.so.1 | grep -i render_server` it shows the correct path of `/usr/libexec/virgl_render_server` so no symlink needed anymore.
In the VM (Arch Linux, up to date) with...