Check diskspace

if [ ! -f "$DATA" ]; then

    # Check free diskspace

    SPACE=$(df --output=avail -B 1 "$IMG" | tail -n 1)

    if (( NEW_SIZE > SPACE )); then

      echo "ERROR: Not enough free space to create virtual disk." && exit 87

    fi

    # Create an empty file

    if ! fallocate -l "${NEW_SIZE}" "${DATA}"; then

      rm -f "${DATA}"

      echo "ERROR: Not enough free space to create virtual disk." && exit 88

      echo "ERROR: Could not allocate file for virtual disk." && exit 88

    fi

    # Check if file exists