mdraid_devices: [] boot_device: "{{ hard_disks | json_query(\"[].partitions[?usage=='boot'][].device\") | first }}" rescue_device: "{{ hard_disks | json_query(\"[].partitions[?usage=='rescue'][].device\") | first }}" system_device: "{{ hard_disks | json_query(\"[].partitions[?usage=='system'][].device\") | first }}" debian_boot_packages: []