Prepare image resizing

FILE="$IMG/$BASE.system.img"

[ ! -f "$FILE" ] && echo "ERROR: Virtual DSM system-image does not exist ($FILE)" && exit 82

DISK_SIZE=$(echo "${DISK_SIZE}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')

NEW_SIZE=$(numfmt --from=iec "${DISK_SIZE}")

FILE="$IMG/data$DISK_SIZE.img"

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

    truncate -s "$DISK_SIZE" "$FILE"

    mkfs.btrfs -q -L data -d single -m single "$FILE" > /dev/null

    truncate -s "${NEW_SIZE}" "${FILE}"

    mkfs.btrfs -q -L data -d single -m single "${FILE}" > /dev/null

    #qemu-img convert -f raw -O qcow2 -o extended_l2=on,cluster_size=128k,compression_type=zstd,preallocation=metadata "$TMP" "$FILE"

fi

[ ! -f "$FILE" ] && echo "ERROR: Virtual DSM data-image does not exist ($FILE)" && exit 83

#OLD_SIZE=$(stat -c%s "${FILE}")

#

#if [ "$NEW_SIZE" -ne "$OLD_SIZE" ]; then

#  echo "Resizing data disk from $OLD_SIZE to $NEW_SIZE bytes"

#

#  if [ "$NEW_SIZE" -gt "$OLD_SIZE" ]; then

#    truncate -s "${NEW_SIZE}" "${FILE}"

#    btrfs filesystem resize "${NEW_SIZE}" "${FILE}"

#  fi

#

#  if [ "$NEW_SIZE" -lt "$OLD_SIZE" ]; then

#    btrfs filesystem resize "${NEW_SIZE}" "${FILE}"

#    truncate -s "${NEW_SIZE}" "${FILE}"

#  fi

#fi

KVM_DISK_OPTS="\

    -device virtio-scsi-pci,id=hw-synoboot,bus=pcie.0,addr=0xa \

    -drive file=${IMG}/${BASE}.boot.img,if=none,id=drive-synoboot,format=raw,cache=none,aio=native,discard=on,detect-zeroes=on \