feat: Configure sizes for multiple disks

    -drive file=${DATA},if=none,id=drive-userdata,format=raw,cache=${DISK_CACHE},aio=${DISK_IO},discard=${DISK_DISCARD},detect-zeroes=on \

    -device scsi-hd,bus=hw-userdata.0,channel=0,scsi-id=0,lun=0,drive=drive-userdata,id=userdata0,rotation_rate=${DISK_ROTATION},bootindex=1"

: ${DISK2_SIZE:=''}

EXTRA_SIZE=DISK2_SIZE

EXTRA_DISK="/storage2/data.img"

if [ -f "${EXTRA_DISK}" ]; then

if [ -d "$(dirname "${EXTRA_DISK}")" ]; then

  if [ ! -f "${EXTRA_DISK}" ]; then

    [ -z "$EXTRA_SIZE" ] && EXTRA_SIZE="16G"

    if ! truncate -s "${EXTRA_SIZE}" "${EXTRA_DISK}"; then

      error "Could not create the file for the second disk." && exit 53

    fi

  fi

  if [ -n "$EXTRA_SIZE" ]; then

    CUR_SIZE=$(stat -c%s "${EXTRA_DISK}")

    DATA_SIZE=$(numfmt --from=iec "${EXTRA_SIZE}")

    if [ "$DATA_SIZE" -gt "$CUR_SIZE" ]; then

      truncate -s "${EXTRA_SIZE}" "${EXTRA_DISK}"

    fi

  fi

  DISK_OPTS="${DISK_OPTS} \

    -device virtio-scsi-pci,id=hw-userdata2,bus=pcie.0,addr=0xd \

    -drive file=${EXTRA_DISK},if=none,id=drive-userdata2,format=raw,cache=${DISK_CACHE},aio=${DISK_IO},discard=${DISK_DISCARD},detect-zeroes=on \

    -device scsi-hd,bus=hw-userdata2.0,channel=0,scsi-id=0,lun=0,drive=drive-userdata2,id=userdata2,rotation_rate=${DISK_ROTATION},bootindex=4"

else

  [ -d "$(dirname "${EXTRA_DISK}")" ] && error "Disk image ${EXTRA_DISK} does not exist! Please supply an empty file of at least 6 GB." && exit 53

fi

: ${DISK3_SIZE:=''}

EXTRA_SIZE=DISK3_SIZE

EXTRA_DISK="/storage3/data.img"

if [ -f "${EXTRA_DISK}" ]; then

if [ -d "$(dirname "${EXTRA_DISK}")" ]; then

  if [ ! -f "${EXTRA_DISK}" ]; then

    [ -z "$EXTRA_SIZE" ] && EXTRA_SIZE="16G"

    if ! truncate -s "${EXTRA_SIZE}" "${EXTRA_DISK}"; then

      error "Could not create the file for the third disk." && exit 54

    fi

  fi

  if [ -n "$EXTRA_SIZE" ]; then

    CUR_SIZE=$(stat -c%s "${EXTRA_DISK}")

    DATA_SIZE=$(numfmt --from=iec "${EXTRA_SIZE}")

    if [ "$DATA_SIZE" -gt "$CUR_SIZE" ]; then

      truncate -s "${EXTRA_SIZE}" "${EXTRA_DISK}"

    fi

  fi

  DISK_OPTS="${DISK_OPTS} \

    -device virtio-scsi-pci,id=hw-userdata3,bus=pcie.0,addr=0xe \

    -drive file=${EXTRA_DISK},if=none,id=drive-userdata3,format=raw,cache=${DISK_CACHE},aio=${DISK_IO},discard=${DISK_DISCARD},detect-zeroes=on \

    -device scsi-hd,bus=hw-userdata3.0,channel=0,scsi-id=0,lun=0,drive=drive-userdata3,id=userdata3,rotation_rate=${DISK_ROTATION},bootindex=5"

else

  [ -d "$(dirname "${EXTRA_DISK}")" ] && error "Disk image ${EXTRA_DISK} does not exist! Please supply an empty file of at least 6 GB." && exit 54

fi

: ${DEVICE:=''}        # Docker variable to passthrough a block device, like /dev/vdc1.