mirror of
https://github.com/vagrant-libvirt/vagrant-libvirt.git
synced 2025-02-25 18:55:27 -06:00
112 lines
2.2 KiB
Bash
Executable File
112 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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error() {
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local msg="${1}"
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echo "==> ${msg}"
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exit 1
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}
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usage() {
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echo "Usage: ${0} IMAGE [BOX]"
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echo
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echo "Package a qcow2 image into a vagrant-libvirt reusable box"
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}
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# Print the image's backing file
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backing(){
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local img=${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 "$1" ]; then
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usage
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exit 1
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fi
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IMG=$(readlink -e $1)
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[[ "$?" -ne 0 ]] && error "'$2': No such image"
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IMG_DIR=$(dirname $IMG)
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IMG_BASENAME=$(basename $IMG)
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# If no box name is supplied infer one from image name
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if [[ -z "$2" ]]; then
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BOX_NAME=${IMG_BASENAME%.*}
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BOX=$BOX_NAME.box
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else
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BOX="$2"
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BOX_NAME=$(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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# 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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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 $TMP_DIR
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IMG_SIZE=$(qemu-img info $TMP_IMG | grep 'virtual size' | awk '{print $3;}' | tr -d 'G')
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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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end
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EOF
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echo "==> Creating box, tarring and gzipping"
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tar cvzf $BOX --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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