#!/bin/bash # # Copyright 2012 Hewlett-Packard Development Company, L.P. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. set -eE # Prevent perl from complaining a lot, but also remove any unexpected side-effects # of $LANG varying between build hosts export LANG=C # Store our initial environment and command line args for later export DIB_ARGS="$@" export DIB_ENV=$(export | grep ' DIB_.*=') SCRIPTNAME=$(basename $0) # this is a bit tricky to handle the case of being installed with "pip # -e" (i.e. setuptools develop mode) and a regular install # # When installed normally, the scripts are installed into /usr/bin/ # and the other bits specified in "data_files" into # /usr/share/diskimage-builder/[elements|lib|scripts] (if you're in a # virtualenv, modulo all this with the right prefix-paths) # # When installed with -e, the scripts will still be installed into # /usr/bin, but the data_files will *not* be installed. Because the # "diskimage_builder" python module will be linked to the source repo # (that's the idea of develop mode) what we can do is assume the # following: # # - if the python module directory has a "bin" directory, then it must # be the source repo and hence we have been installed via develop # mode. Thus setup ourselves to use the scripts from the source # repo. # # - otherwise, try to find libraires and elements have been installed # into the system paths via a "normal" pip install # # - lastly, we might be running completely uninstalled. # XXX : this might cause problems at some point; we might need to "cd" # so python can find things, or use pip -e. # # This means if you want to develop your elements, then "pip -e" is # the way to go ... your disk-image-create runs will be referencing # the scripts from the editable source repo. But note that changes to # anything in bin/ will *not* be applied; those files have been # statically copied in during install. You'll need to iterate with # another run of "pip install -e" if you're actually working on those # bin/* scripts. export SCRIPT_HOME=$(dirname $(readlink -f $0)) _DIB_PYTHON_INSTALL=$(python -c ' import inspect import os import sys # this can fail if we are being run with pwd outside the source # directory *and* have not been installed try: import diskimage_builder except ImportError: sys.exit(0) print(os.path.dirname(inspect.getfile(diskimage_builder)))') if [ -n "$_DIB_PYTHON_INSTALL" -a -d $_DIB_PYTHON_INSTALL/../bin ]; then # we have been installed with "pip -e" export SCRIPT_HOME=$_DIB_PYTHON_INSTALL/../bin export _PREFIX=$SCRIPT_HOME/.. elif [ -d $SCRIPT_HOME/../share/diskimage-builder ]; then # we have been installed in /usr export _PREFIX=$SCRIPT_HOME/../share/diskimage-builder else # we have not been installed in any way export _PREFIX=$SCRIPT_HOME/.. fi export _LIB=$_PREFIX/lib source $_LIB/die IS_RAMDISK=0 if [ "$SCRIPTNAME" == "ramdisk-image-create" ]; then IS_RAMDISK=1 fi function show_options () { echo "Usage: ${SCRIPTNAME} [OPTION]... [ELEMENT]..." echo echo "Options:" echo " -a i386|amd64|armhf -- set the architecture of the image(default amd64)" echo " -o imagename -- set the imagename of the output image file(default image)" echo " -t qcow2,tar,tgz,squashfs,vhd,docker,aci,raw -- set the image types of the output image files (default qcow2)" echo " File types should be comma separated. VHD outputting requires the vhd-util" echo " executable be in your PATH. ACI outputting requires the ACI_MANIFEST " echo " environment variable be a path to a manifest file." echo " -x -- turn on tracing (use -x -x for very detailed tracing)." echo " -u -- uncompressed; do not compress the image - larger but faster" echo " -c -- clear environment before starting work" echo " --checksum -- generate MD5 and SHA256 checksum files for the created image" echo " --image-size size -- image size in GB for the created image" echo " --image-cache directory -- location for cached images(default ~/.cache/image-create)" echo " --max-online-resize size -- max number of filesystem blocks to support when resizing." echo " Useful if you want a really large root partition when the image is deployed." echo " Using a very large value may run into a known bug in resize2fs." echo " Setting the value to 274877906944 will get you a 1PB root file system." echo " Making this value unnecessarily large will consume extra disk space " echo " on the root partition with extra file system inodes." echo " --min-tmpfs size -- minimum size in GB needed in tmpfs to build the image" echo " --mkfs-options -- option flags to be passed directly to mkfs." echo " Options should be passed as a single string value." echo " --no-tmpfs -- do not use tmpfs to speed image build" echo " --offline -- do not update cached resources" echo " --qemu-img-options -- option flags to be passed directly to qemu-img." echo " Options need to be comma separated, and follow the key=value pattern." echo " --root-label label -- label for the root filesystem. Defaults to 'cloudimg-rootfs'." echo " --ramdisk-element -- specify the main element to be used for building ramdisks." echo " Defaults to 'ramdisk'. Should be set to 'dracut-ramdisk' for platforms such" echo " as RHEL and CentOS that do not package busybox." echo " --install-type -- specify the default installation type. Defaults to 'source'. Set to 'package' to use package based installations by default." echo " --docker-target -- specify the repo and tag to use if the output type is docker. Defaults to the value of output imagename" if [ "$IS_RAMDISK" == "0" ]; then echo " -n skip the default inclusion of the 'base' element" echo " -p package[,package,package] -- list of packages to install in the image. If specified multiple times the packages are appended to the list." fi echo " -h|--help -- display this help and exit" echo " --version -- display version and exit" echo echo "ELEMENTS_PATH will allow you to specify multiple locations for the elements." echo echo "NOTE: At least one distribution root element must be specified." echo echo "NOTE: If using the VHD output format you need to have a patched version of vhd-util installed for the image" echo " to be bootable. The patch is available here: https://github.com/emonty/vhd-util/blob/master/debian/patches/citrix" echo " and a PPA with the patched tool is available here: https://launchpad.net/~openstack-ci-core/+archive/ubuntu/vhd-util" echo echo "Examples:" if [ "$IS_RAMDISK" == "0" ]; then echo " ${SCRIPTNAME} -a amd64 -o ubuntu-amd64 vm ubuntu" echo " export ELEMENTS_PATH=~/source/tripleo-image-elements/elements" echo " ${SCRIPTNAME} -a amd64 -o fedora-amd64-heat-cfntools vm fedora heat-cfntools" else echo " ${SCRIPTNAME} -a amd64 -o fedora-deploy deploy fedora" echo " ${SCRIPTNAME} -a amd64 -o ubuntu-ramdisk ramdisk ubuntu" fi } function show_version() { if [ -n "$_DIB_PYTHON_INSTALL" ]; then python -c "from diskimage_builder import version; print(version.version_info.version_string())" else echo "diskimage-builder is not installed." fi } DIB_DEBUG_TRACE=${DIB_DEBUG_TRACE:-0} INSTALL_PACKAGES="" IMAGE_TYPES=("qcow2") COMPRESS_IMAGE="true" export DIB_ROOT_LABEL="" DIB_DEFAULT_INSTALLTYPE=${DIB_DEFAULT_INSTALLTYPE:-"source"} MKFS_OPTS="" ACI_MANIFEST=${ACI_MANIFEST:-} DOCKER_TARGET="" TEMP=`getopt -o a:ho:t:xucnp: -l checksum,no-tmpfs,offline,help,version,min-tmpfs:,image-size:,image-cache:,max-online-resize:,mkfs-options:,qemu-img-options:,ramdisk-element:,root-label:,install-type:,docker-target: -n $SCRIPTNAME -- "$@"` if [ $? -ne 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi # Note the quotes around `$TEMP': they are essential! eval set -- "$TEMP" while true ; do case "$1" in -a) export ARCH=$2; shift 2 ;; -o) export IMAGE_NAME=$2; shift 2 ;; -t) IFS="," read -a IMAGE_TYPES <<< "$2"; export IMAGE_TYPES ; shift 2 ;; -h|--help) show_options; exit 0;; --version) show_version; exit 0;; -x) shift; DIB_DEBUG_TRACE=$(( $DIB_DEBUG_TRACE + 1 ));; -u) shift; export COMPRESS_IMAGE="";; -c) shift ; export CLEAR_ENV=1;; -n) shift; export SKIP_BASE="1";; -p) IFS="," read -a _INSTALL_PACKAGES <<< "$2"; export INSTALL_PACKAGES=( ${INSTALL_PACKAGES[@]} ${_INSTALL_PACKAGES[@]} ) ; shift 2 ;; --checksum) shift; export DIB_CHECKSUM=1;; --image-size) export DIB_IMAGE_SIZE=$2; shift 2;; --image-cache) export DIB_IMAGE_CACHE=$2; shift 2;; --max-online-resize) export MAX_ONLINE_RESIZE=$2; shift 2;; --mkfs-options) MKFS_OPTS=$2; shift 2;; --min-tmpfs) export DIB_MIN_TMPFS=$2; shift 2;; --no-tmpfs) shift; export DIB_NO_TMPFS=1;; --offline) shift; export DIB_OFFLINE=1;; --qemu-img-options) QEMU_IMG_OPTIONS=$2; shift 2;; --root-label) export DIB_ROOT_LABEL=$2; shift 2;; --ramdisk-element) RAMDISK_ELEMENT=$2; shift 2;; --install-type) DIB_DEFAULT_INSTALLTYPE=$2; shift 2;; --docker-target) export DOCKER_TARGET=$2; shift 2 ;; --) shift ; break ;; *) echo "Internal error!" ; exit 1 ;; esac done export DIB_DEBUG_TRACE export DIB_IMAGE_CACHE=${DIB_IMAGE_CACHE:-~/.cache/image-create} mkdir -p $DIB_IMAGE_CACHE if [ "$CLEAR_ENV" = "1" -a "$HOME" != "" ]; then echo "Re-execing to clear environment." echo "(note this will prevent much of the local_config element from working)" exec -c $0 "$@" fi # Display the current file/function/line in the debug output function _ps4 { IFS=" " called=($(caller 0)) local f=$(readlink -f ${called[2]}) printf "%-80s " "$f:${called[1]}:${called[0]}" } export -f _ps4 export PS4='+ $(_ps4): ' source $_LIB/img-defaults source $_LIB/common-functions source $_LIB/img-functions if [ "$IS_RAMDISK" == "1" ]; then source $_LIB/ramdisk-defaults source $_LIB/ramdisk-functions fi # If no elements are specified theres no way we can succeed if [ -z "$*" ]; then echo "ERROR: At least one distribution root element must be specified" exit 1 fi arg_to_elements "$@" # start tracing after most boilerplate if [ ${DIB_DEBUG_TRACE} -gt 0 ]; then set -x fi if [ "${#IMAGE_TYPES[@]}" = "1" ]; then export IMAGE_NAME=${IMAGE_NAME%%\.${IMAGE_TYPES[0]}} fi # Check for required tools early on for X in ${!IMAGE_TYPES[@]}; do case "${IMAGE_TYPES[$X]}" in qcow2) if [ -z "$(which qemu-img)" ]; then echo "qcow2 output format specified but qemu-img executable not found." exit 1 fi ;; tgz) # Force tar to be created. IMAGE_TYPES+=('tar') ;; vhd) if [ -z "$(which vhd-util)" ]; then echo "vhd output format specified but no vhd-util executable found." exit 1 fi ;; squashfs) if [ -z "$(which mksquashfs)" ]; then echo "squashfs output format specified but no mksquashfs executable found." exit 1 fi ;; docker) if [ -z "$(which docker)" ]; then echo "docker output format specified but no docker executable found." exit 1 fi if [ -z "$DOCKER_TARGET" ]; then echo "Please set --docker-target." exit 1 fi ;; esac done # NOTE: fstrim is on most all recent systems. It is provided by the util-linux # package. if [[ -z "$(which fstrim)" ]]; then echo "fstrim utility is not found. This is provided by util-linux package" echo "Please check your PATH variable is set correctly" exit 1 fi # NOTE: Tuning the rootfs uuid works only for ext filesystems. # Rely on the below environment variable only for ext filesystems. export DIB_IMAGE_ROOT_FS_UUID=$(uuidgen -r) if echo "$FS_TYPE" | grep -q "^ext" && [ -z "${DIB_IMAGE_ROOT_FS_UUID}" ]; then echo "ext filesystem detected but no DIB_IMAGE_ROOT_FS_UUID found." echo "Is the uuidgen utility installed on your system?" exit 1 fi # FS_TYPE isn't available until after we source img-defaults if [ -z "$DIB_ROOT_LABEL" ]; then # NOTE(bnemec): XFS has a limit of 12 characters for filesystem labels # Not changing the default for other filesystems to maintain backwards compatibility if [ "$FS_TYPE" = "xfs" ]; then DIB_ROOT_LABEL="img-rootfs" else DIB_ROOT_LABEL="cloudimg-rootfs" fi fi # xattr support cannot be relied upon with tmpfs builds # some kernels supoprt it, some don't if [[ -n "${GENTOO_PROFILE}" ]]; then if [[ "${GENTOO_PROFILE}" =~ "hardened" ]]; then echo 'disabling tmpfs for gentoo hardened build' export DIB_NO_TMPFS=1 fi fi mk_build_dir create_base # This variable needs to be propagated into the chroot mkdir -p $TMP_HOOKS_PATH/environment.d echo "export DIB_DEFAULT_INSTALLTYPE=\${DIB_DEFAULT_INSTALLTYPE:-\"${DIB_DEFAULT_INSTALLTYPE}\"}" > $TMP_HOOKS_PATH/environment.d/11-dib-install-type.bash run_d extra-data # Run pre-install scripts. These do things that prepare the chroot for package installs run_d_in_target pre-install do_extra_package_install # Call install scripts to pull in the software users want. run_d_in_target install run_d_in_target post-install # ensure we do not have a lost+found directory in the root folder # that could cause copy to fail (it will be created again later # when creating the file system, if it needs such directory) if [ -e "$TMP_BUILD_DIR/mnt/lost+found" ]; then sudo rm -rf "$TMP_BUILD_DIR/mnt/lost+found" fi # Free up /mnt unmount_image mv $TMP_BUILD_DIR/mnt $TMP_BUILD_DIR/built # save xtrace state, as we always want to turn it off to avoid # spamming the logs with du output below. xtrace=$(set +o | grep xtrace) # temp file for holding du output du_output=${TMP_BUILD_DIR}/du_output.tmp if [ -n "$DIB_IMAGE_SIZE" ]; then du_size=$(echo "$DIB_IMAGE_SIZE" | awk '{printf("%d\n",$1 * 1024 *1024)}') else set +o xtrace echo "Calculating image size (this may take a minute)..." sudo du -a -c -x ${TMP_BUILD_DIR}/built > ${du_output} # the last line is the total size from "-c". # scale this by 0.6 to create a slightly bigger image du_size=$(tail -n1 ${du_output} | cut -f1 | awk '{print int($1 / 0.6)}') $xtrace fi if [[ "${DIB_SHOW_IMAGE_USAGE:-0}" != 0 ]]; then set +o xtrace if [ ! -f "$du_output" ]; then sudo du -a -c -x ${TMP_BUILD_DIR}/built > ${du_output} fi du_output_show="sort -nr ${du_output} | numfmt --to=iec-i --padding=7 --suffix=B --field=1 --from-unit=1024" # by default show the 10MiB and greater files & directories -- a # dir with lots of little files will still show up, but this helps # signal:noise ratio if [[ ${DIB_SHOW_IMAGE_USAGE_FULL:-0} == 0 ]]; then # numfmt will start giving a decimal place when < 10MiB du_output_show+="| egrep 'MiB|GiB|TiB|PiB' | grep -v '\..MiB'" echo "=================================" echo "Image size report (files > 10MiB)" echo "=================================" else echo "=================" echo "Image size report" echo "=================" fi eval ${du_output_show} echo echo "===== end image size report =====" echo $xtrace fi rm -f ${du_output} if [ "$FS_TYPE" = "ext4" ] ; then # Very conservative to handle images being resized a lot # We set journal size to 64M so our journal is large enough when we # perform an FS resize. MKFS_OPTS="-i 4096 -J size=64 $MKFS_OPTS" # Grow the image size to account for the journal, only if the user # has not asked for a specific size. if [ -z "$DIB_IMAGE_SIZE" ]; then du_size=$(( $du_size + 65536 )) fi fi # Rounding down size so that is is a multiple of 64, works around a bug in # qemu-img that may occur when compressing raw images that aren't a multiple # of 64k. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1180021 du_size=$(echo "$du_size" | awk ' { if ($1 % 64 != 0) print $1 + 64 - ( $1 % 64); else print $1; } ') truncate -s${du_size}K $TMP_IMAGE_PATH if [ -n "$MAX_ONLINE_RESIZE" ]; then MKFS_OPTS="-E resize=$MAX_ONLINE_RESIZE $MKFS_OPTS" fi LOOPDEV=$(sudo losetup --show -f $TMP_IMAGE_PATH) export EXTRA_UNMOUNT="detach_loopback $LOOPDEV" export IMAGE_BLOCK_DEVICE=$LOOPDEV eval_run_d block-device "IMAGE_BLOCK_DEVICE=" sudo mkfs -t $FS_TYPE $MKFS_OPTS -L ${DIB_ROOT_LABEL} ${IMAGE_BLOCK_DEVICE} # Tuning the rootfs uuid works only for ext filesystems. if echo "$FS_TYPE" | grep -q "^ext"; then sudo tune2fs -U ${DIB_IMAGE_ROOT_FS_UUID} ${IMAGE_BLOCK_DEVICE} fi mkdir $TMP_BUILD_DIR/mnt sudo mount ${IMAGE_BLOCK_DEVICE} $TMP_BUILD_DIR/mnt sudo mv -t $TMP_BUILD_DIR/mnt ${TMP_BUILD_DIR}/built/* mount_proc_dev_sys run_d_in_target finalise finalise_base for X in ${!IMAGE_TYPES[@]} ; do if [[ " tar aci " =~ "${IMAGE_TYPES[$X]}" ]]; then if [ "${IMAGE_TYPES[$X]}" = "aci" ]; then sudo tar -C ${TMP_BUILD_DIR}/mnt -cf $IMAGE_NAME.aci --exclude ./sys \ --exclude ./proc --xattrs --xattrs-include=\* \ --transform 's,^.,rootfs,S' . if [ -n "$ACI_MANIFEST" ]; then cp $ACI_MANIFEST ${TMP_BUILD_DIR}/manifest sudo tar -C ${TMP_BUILD_DIR} --append -f $IMAGE_NAME.aci manifest else echo "No ACI_MANIFEST specified. An ACI_MANIFEST must be specified for" echo " this image to be usable." fi else sudo tar -C ${TMP_BUILD_DIR}/mnt -cf $IMAGE_NAME.tar --exclude ./sys \ --exclude ./proc --xattrs --xattrs-include=\* . fi sudo chown $USER: $IMAGE_NAME.${IMAGE_TYPES[$X]} unset IMAGE_TYPES[$X] elif [ "${IMAGE_TYPES[$x]}" == "squashfs" ]; then sudo mksquashfs ${TMP_BUILD_DIR}/mnt $IMAGE_NAME.squash -comp xz \ -noappend -root-becomes ${TMP_BUILD_DIR}/mnt \ -wildcards -e "proc/*" -e "sys/*" -no-recovery elif [ "${IMAGE_TYPES[$X]}" == "docker" ]; then sudo tar -C ${TMP_BUILD_DIR}/mnt -cf - --exclude ./sys \ --exclude ./proc --xattrs --xattrs-include=\* . \ | sudo docker import - $DOCKER_TARGET unset IMAGE_TYPES[$X] fi done if [[ ! $IMAGE_ELEMENT =~ no-final-image ]]; then # Prep filesystem by discarding all unused space fstrim_image fi # Unmount and cleanup the /mnt and /build subdirectories, to save # space before converting the image to some other format. unmount_image cleanup_build_dir if [[ (! $IMAGE_ELEMENT =~ no-final-image) && "$IS_RAMDISK" == "0" ]]; then has_raw_type= for IMAGE_TYPE in ${IMAGE_TYPES[@]} ; do # We have to do raw last because it is destructive if [ "$IMAGE_TYPE" = "raw" ]; then has_raw_type=1 elif [ "$IMAGE_TYPE" != "squashfs" ]; then compress_and_save_image $IMAGE_NAME.$IMAGE_TYPE fi done if [ -n "$has_raw_type" ]; then IMAGE_TYPE="raw" compress_and_save_image $IMAGE_NAME.$IMAGE_TYPE fi fi # Remove the leftovers, i.e. the temporary image directory. cleanup_image_dir # All done! trap EXIT