But then getting SyncFailed with

VirtualMachineInstance test
Failed to find a sourceFile in containerDisk disk-1: Failed to check /proc/1/root/run/k3s/containerd/io.containerd.runtime.v2.task/k8s.io/13063f6d1ce116f91752acae7c1157bee4fad81c54d82a8ca6cd230e3bd7aa95/rootfs/disk for disks: open /proc/1/root/run/k3s/containerd/io.containerd.runtime.v2.task/k8s.io/13063f6d1ce116f91752acae7c1157bee4fad81c54d82a8ca6cd230e3bd7aa95/rootfs/disk: no such file or directory

It looks to me like this use case (while not documented as far as I can find), should work. What am I doing wrong?