mirror of
https://github.com/vagrant-libvirt/vagrant-libvirt.git
synced 2025-02-25 18:55:27 -06:00
1633ec25f1
Switch from using the default human readable format to request the json format from qemu-img as this will provide disk sizes in bytes. This avoids assuming that the returned size is in GigaBytes. Fixes #743
131 lines
2.8 KiB
Bash
Executable File
131 lines
2.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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#set -xu
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error() {
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local msg="${1}"
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echo "==> ERROR: ${msg}"
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exit 1
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}
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usage() {
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echo "Usage: ${0} IMAGE [BOX] [Vagrantfile.add]"
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echo
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echo "Package a qcow2 image into a vagrant-libvirt reusable box"
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}
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# Print the image's backing file
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backing(){
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local img=${1}
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qemu-img info "$img" | grep 'backing file:' | cut -d ':' -f2
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}
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# Rebase the image
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rebase(){
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local img=${1}
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qemu-img rebase -p -b "" "$img"
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[[ "$?" -ne 0 ]] && error "Error during rebase"
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}
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# Is absolute path
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isabspath(){
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local path=${1}
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[[ "$path" =~ ^/.* ]]
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}
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if [ -z "$1" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
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usage
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exit 1
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fi
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IMG=$(readlink -e "$1")
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[[ "$?" -ne 0 ]] && error "'$1': No such image"
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IMG_DIR=$(dirname "$IMG")
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IMG_BASENAME=$(basename "$IMG")
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BOX=${2:-}
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# If no box name is supplied infer one from image name
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if [[ -z "$BOX" ]]; then
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BOX_NAME=${IMG_BASENAME%.*}
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BOX=$BOX_NAME.box
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else
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BOX_NAME=$(basename "${BOX%.*}")
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fi
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[[ -f "$BOX" ]] && error "'$BOX': Already exists"
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CWD=$(pwd)
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TMP_DIR="$CWD/_tmp_package"
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TMP_IMG="$TMP_DIR/box.img"
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mkdir -p "$TMP_DIR"
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[[ ! -r "$IMG" ]] && error "'$IMG': Permission denied"
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if [ -n "$3" ] && [ -r "$3" ]; then
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VAGRANTFILE_ADD="$(cat $3)"
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fi
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# We move / copy (when the image has master) the image to the tempdir
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# ensure that it's moved back / removed again
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if [[ -n $(backing "$IMG") ]]; then
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echo "==> Image has backing image, copying image and rebasing ..."
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trap "rm -rf $TMP_DIR" EXIT
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cp "$IMG" "$TMP_IMG"
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rebase "$TMP_IMG"
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else
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if fuser -s "$IMG"; then
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error "Image '$IMG_BASENAME' is used by another process"
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fi
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# move the image to get a speed-up and use less space on disk
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trap 'mv "$TMP_IMG" "$IMG"; rm -rf "$TMP_DIR"' EXIT
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mv "$IMG" "$TMP_IMG"
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fi
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cd "$TMP_DIR"
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#Using the awk int function here to truncate the virtual image size to an
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#integer since the fog-libvirt library does not seem to properly handle
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#floating point.
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IMG_SIZE=$(qemu-img info --output=json "$TMP_IMG" | awk '/virtual-size/{s=int($2)/(1024^3); print (s == int(s)) ? s : int(s)+1 }')
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echo "{$IMG_SIZE}"
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cat > metadata.json <<EOF
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{
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"provider": "libvirt",
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"format": "qcow2",
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"virtual_size": ${IMG_SIZE}
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}
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EOF
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cat > Vagrantfile <<EOF
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Vagrant.configure("2") do |config|
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config.vm.provider :libvirt do |libvirt|
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libvirt.driver = "kvm"
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libvirt.host = ""
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libvirt.connect_via_ssh = false
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libvirt.storage_pool_name = "default"
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end
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${VAGRANTFILE_ADD:-}
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end
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EOF
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echo "==> Creating box, tarring and gzipping"
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tar cvzf "$BOX" -S --totals ./metadata.json ./Vagrantfile ./box.img
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# if box is in tmpdir move it to CWD before removing tmpdir
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if ! isabspath "$BOX"; then
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mv "$BOX" "$CWD"
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fi
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echo "==> ${BOX} created"
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echo "==> You can now add the box:"
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echo "==> 'vagrant box add ${BOX} --name ${BOX_NAME}'"
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