IaC Lab01 vm image file resize script

resize.sh

#!/bin/bash

resize_cmd="virt-resize"

if ! command -v "${resize_cmd}" &>/dev/null; then
	echo "Command '${resize_cmd}' not found. Please install 'libguestfs-tools' package."
	exit 1
fi

# This script resizes $1 VM disk image adding $2 GB to the original size

vm="$1"
shift
size="$1"

if [[ -z ${vm} ]] || [[ -z ${size} ]]; then
	echo "Usage: $0 <vm> <size>"
	exit 1
fi

qemu-img resize "${vm}" "+${size}"
cp "${vm}" "${vm}.orig"
${resize_cmd} --expand /dev/sda1 "${vm}.orig" "${vm}"
rm "${vm}.orig"
info=$(qemu-img info "${vm}") || true
vm_name=$(basename "${vm}")

grep "virtual size:" <<<"${info}" >"${vm_name}"_resized.txt

exit 0