> anka modify 12.0.1-jenkins disk --help
usage: disk [options]

   Modify hard drive settings

options:
  -c,--controller <val>    set controller: ablk/virtio-blk
  -s,--size <val>          set disk size
  -f,--file <val>          assign external image or device
  --ro                     Mark the image as read-only for the VM
  --rw                     Mark the image as writable (default) for the VM