e49d347ba9
Since the ironic-agent element builds the ramdisk and extracts the kernel itself, there's no need to actually generate an image at the end of the process. Previously the unnecessary image was being deleted, but this wastes a bunch of time compressing and converting the image. It's better to just not create the image at all. This change adds a noop element called no-final-image that disk-image-create looks for in the element list and, if found, will cause it to skip the final image generation. This is more flexible than the previous ironic-agent-specific method that would have required changes to disk-image-create for every element that wanted to behave similarly. Note that this cannot be done using an environment variable, because element environments.d entries do not propagate out to disk-image-create. It also doesn't make sense as a user option because it should be set by the element author, not the user. Change-Id: I168feb18f0d578b3babbe4784d3ef75e755e1ebd
484 lines
19 KiB
Bash
Executable File
484 lines
19 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright 2012 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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set -eE
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# Prevent perl from complaining a lot, but also remove any unexpected side-effects
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# of $LANG varying between build hosts
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export LANG=C
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# Store our initial environment and command line args for later
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export DIB_ARGS="$@"
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export DIB_ENV=$(export | grep ' DIB_.*=')
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SCRIPTNAME=$(basename $0)
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# this is a bit tricky to handle the case of being installed with "pip
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# -e" (i.e. setuptools develop mode) and a regular install
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#
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# When installed normally, the scripts are installed into /usr/bin/
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# and the other bits specified in "data_files" into
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# /usr/share/diskimage-builder/[elements|lib|scripts] (if you're in a
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# virtualenv, modulo all this with the right prefix-paths)
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#
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# When installed with -e, the scripts will still be installed into
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# /usr/bin, but the data_files will *not* be installed. Because the
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# "diskimage_builder" python module will be linked to the source repo
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# (that's the idea of develop mode) what we can do is assume the
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# following:
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#
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# - if the python module directory has a "bin" directory, then it must
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# be the source repo and hence we have been installed via develop
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# mode. Thus setup ourselves to use the scripts from the source
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# repo.
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#
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# - otherwise, try to find libraires and elements have been installed
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# into the system paths via a "normal" pip install
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#
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# - lastly, we might be running completely uninstalled.
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# XXX : this might cause problems at some point; we might need to "cd"
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# so python can find things, or use pip -e.
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#
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# This means if you want to develop your elements, then "pip -e" is
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# the way to go ... your disk-image-create runs will be referencing
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# the scripts from the editable source repo. But note that changes to
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# anything in bin/ will *not* be applied; those files have been
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# statically copied in during install. You'll need to iterate with
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# another run of "pip install -e" if you're actually working on those
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# bin/* scripts.
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export SCRIPT_HOME=$(dirname $(readlink -f $0))
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_DIB_PYTHON_INSTALL=$(python -c '
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import inspect
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import os
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import sys
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# this can fail if we are being run with pwd outside the source
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# directory *and* have not been installed
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try:
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import diskimage_builder
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except ImportError:
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sys.exit(0)
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print(os.path.dirname(inspect.getfile(diskimage_builder)))')
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if [ -n "$_DIB_PYTHON_INSTALL" -a -d $_DIB_PYTHON_INSTALL/../bin ]; then
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# we have been installed with "pip -e"
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export SCRIPT_HOME=$_DIB_PYTHON_INSTALL/../bin
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export _PREFIX=$SCRIPT_HOME/..
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elif [ -d $SCRIPT_HOME/../share/diskimage-builder ]; then
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# we have been installed in /usr
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export _PREFIX=$SCRIPT_HOME/../share/diskimage-builder
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else
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# we have not been installed in any way
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export _PREFIX=$SCRIPT_HOME/..
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fi
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export _LIB=$_PREFIX/lib
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source $_LIB/die
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IS_RAMDISK=0
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if [ "$SCRIPTNAME" == "ramdisk-image-create" ]; then
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IS_RAMDISK=1
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fi
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function show_options () {
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echo "Usage: ${SCRIPTNAME} [OPTION]... [ELEMENT]..."
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echo
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echo "Options:"
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echo " -a i386|amd64|armhf -- set the architecture of the image(default amd64)"
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echo " -o imagename -- set the imagename of the output image file(default image)"
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echo " -t qcow2,tar,vhd,docker,aci,raw -- set the image types of the output image files (default qcow2)"
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echo " File types should be comma separated. VHD outputting requires the vhd-util"
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echo " executable be in your PATH. ACI outputting requires the ACI_MANIFEST "
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echo " environment variable be a path to a manifest file."
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echo " -x -- turn on tracing (use -x -x for very detailed tracing)"
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echo " -u -- uncompressed; do not compress the image - larger but faster"
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echo " -c -- clear environment before starting work"
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echo " --image-size size -- image size in GB for the created image"
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echo " --image-cache directory -- location for cached images(default ~/.cache/image-create)"
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echo " --max-online-resize size -- max number of filesystem blocks to support when resizing."
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echo " Useful if you want a really large root partition when the image is deployed."
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echo " Using a very large value may run into a known bug in resize2fs."
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echo " Setting the value to 274877906944 will get you a 1PB root file system."
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echo " Making this value unnecessarily large will consume extra disk space "
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echo " on the root partition with extra file system inodes."
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echo " --min-tmpfs size -- minimum size in GB needed in tmpfs to build the image"
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echo " --mkfs-options -- option flags to be passed directly to mkfs."
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echo " Options should be passed as a single string value."
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echo " --no-tmpfs -- do not use tmpfs to speed image build"
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echo " --offline -- do not update cached resources"
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echo " --qemu-img-options -- option flags to be passed directly to qemu-img."
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echo " Options need to be comma separated, and follow the key=value pattern."
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echo " --root-label label -- label for the root filesystem. Defaults to 'cloudimg-rootfs'."
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echo " --ramdisk-element -- specify the main element to be used for building ramdisks."
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echo " Defaults to 'ramdisk'. Should be set to 'dracut-ramdisk' for platforms such"
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echo " as RHEL and CentOS that do not package busybox."
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echo " --install-type -- specify the default installation type. Defaults to 'source'. Set to 'package' to use package based installations by default."
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echo " --docker-target -- specify the repo and tag to use if the output type is docker. Defaults to the value of output imagename"
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if [ "$IS_RAMDISK" == "0" ]; then
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echo " -n skip the default inclusion of the 'base' element"
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echo " -p package[,package,package] -- list of packages to install in the image"
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fi
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echo " -h|--help -- display this help and exit"
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echo " --version -- display version and exit"
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echo
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echo "ELEMENTS_PATH will allow you to specify multiple locations for the elements."
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echo
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echo "NOTE: At least one distribution root element must be specified."
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echo
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echo "NOTE: If using the VHD output format you need to have a patched version of vhd-util installed for the image"
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echo " to be bootable. The patch is available here: https://github.com/emonty/vhd-util/blob/master/debian/patches/citrix"
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echo " and a PPA with the patched tool is available here: https://launchpad.net/~openstack-ci-core/+archive/ubuntu/vhd-util"
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echo
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echo "Examples:"
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if [ "$IS_RAMDISK" == "0" ]; then
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echo " ${SCRIPTNAME} -a amd64 -o ubuntu-amd64 vm ubuntu"
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echo " export ELEMENTS_PATH=~/source/tripleo-image-elements/elements"
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echo " ${SCRIPTNAME} -a amd64 -o fedora-amd64-heat-cfntools vm fedora heat-cfntools"
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else
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echo " ${SCRIPTNAME} -a amd64 -o fedora-deploy deploy fedora"
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echo " ${SCRIPTNAME} -a amd64 -o ubuntu-ramdisk ramdisk ubuntu"
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fi
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}
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function show_version() {
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if [ -n "$_DIB_PYTHON_INSTALL" ]; then
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python -c "from diskimage_builder import version; print(version.version_info.version_string())"
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else
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echo "diskimage-builder is not installed."
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fi
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}
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INSTALL_PACKAGES=""
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IMAGE_TYPES=("qcow2")
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COMPRESS_IMAGE="true"
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export DIB_ROOT_LABEL=""
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DIB_DEFAULT_INSTALLTYPE=${DIB_DEFAULT_INSTALLTYPE:-"source"}
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MKFS_OPTS=""
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ACI_MANIFEST=${ACI_MANIFEST:-}
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DOCKER_TARGET=""
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TEMP=`getopt -o a:ho:t:xucnp: -l 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 $SCRIPTNAME -- "$@"`
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if [ $? -ne 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
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# Note the quotes around `$TEMP': they are essential!
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eval set -- "$TEMP"
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while true ; do
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case "$1" in
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-a) export ARCH=$2; shift 2 ;;
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-o) export IMAGE_NAME=$2; shift 2 ;;
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-t) IFS="," read -a IMAGE_TYPES <<< "$2"; export IMAGE_TYPES ; shift 2 ;;
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-h|--help) show_options; exit 0;;
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--version) show_version; exit 0;;
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-x) shift; export DIB_DEBUG_TRACE=$(( $DIB_DEBUG_TRACE + 1 )); set -x;;
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-u) shift; export COMPRESS_IMAGE="";;
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-c) shift ; export CLEAR_ENV=1;;
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-n) shift; export SKIP_BASE="1";;
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-p) IFS="," read -a INSTALL_PACKAGES <<< "$2"; export INSTALL_PACKAGES ; shift 2 ;;
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--image-size) export DIB_IMAGE_SIZE=$2; shift 2;;
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--image-cache) export DIB_IMAGE_CACHE=$2; shift 2;;
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--max-online-resize) export MAX_ONLINE_RESIZE=$2; shift 2;;
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--mkfs-options) MKFS_OPTS=$2; shift 2;;
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--min-tmpfs) export DIB_MIN_TMPFS=$2; shift 2;;
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--no-tmpfs) shift; export DIB_NO_TMPFS=1;;
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--offline) shift; export DIB_OFFLINE=1;;
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--qemu-img-options) QEMU_IMG_OPTIONS=$2; shift 2;;
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--root-label) export DIB_ROOT_LABEL=$2; shift 2;;
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--ramdisk-element) RAMDISK_ELEMENT=$2; shift 2;;
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--install-type) DIB_DEFAULT_INSTALLTYPE=$2; shift 2;;
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--docker-target) export DOCKER_TARGET=$2; shift 2 ;;
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--) shift ; break ;;
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*) echo "Internal error!" ; exit 1 ;;
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esac
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done
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export DIB_IMAGE_CACHE=${DIB_IMAGE_CACHE:-~/.cache/image-create}
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mkdir -p $DIB_IMAGE_CACHE
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if [ "$CLEAR_ENV" = "1" -a "$HOME" != "" ]; then
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echo "Re-execing to clear environment."
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echo "(note this will prevent much of the local_config element from working)"
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exec -c $0 "$@"
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fi
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# Display the current file/function/line in the debug output
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function _ps4 {
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IFS=" " called=($(caller 0))
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local f=$(readlink -f ${called[2]})
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printf "%-80s " "$f:${called[1]}:${called[0]}"
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}
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export -f _ps4
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export PS4='+ $(_ps4): '
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source $_LIB/img-defaults
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source $_LIB/common-functions
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source $_LIB/img-functions
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if [ "$IS_RAMDISK" == "1" ]; then
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source $_LIB/ramdisk-defaults
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source $_LIB/ramdisk-functions
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fi
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# If no elements are specified theres no way we can succeed
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if [ -z "$*" ]; then
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echo "ERROR: At least one distribution root element must be specified"
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exit 1
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fi
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arg_to_elements "$@"
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if [ "${#IMAGE_TYPES[@]}" = "1" ]; then
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export IMAGE_NAME=${IMAGE_NAME%%\.${IMAGE_TYPES[0]}}
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fi
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# Check for required tools early on
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for X in ${!IMAGE_TYPES[@]}; do
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case "${IMAGE_TYPES[$X]}" in
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qcow2)
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if [ -z "$(which qemu-img)" ]; then
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echo "qcow2 output format specified but qemu-img executable not found."
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exit 1
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fi
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;;
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vhd)
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if [ -z "$(which vhd-util)" ]; then
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echo "vhd output format specified but no vhd-util executable found."
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exit 1
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fi
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;;
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docker)
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if [ -z "$(which docker)" ]; then
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echo "docker output format specified but no docker executable found."
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exit 1
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fi
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if [ -z "$DOCKER_TARGET" ]; then
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echo "Please set --docker-target."
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exit 1
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fi
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;;
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esac
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done
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# NOTE: fstrim is on most all recent systems. It is provided by the util-linux
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# package.
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if [[ -z "$(which fstrim)" ]]; then
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echo "fstrim utility is not found. This is provided by util-linux package"
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echo "Please check your PATH variable is set correctly"
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exit 1
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fi
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# NOTE: Tuning the rootfs uuid works only for ext filesystems.
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# Rely on the below environment variable only for ext filesystems.
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export DIB_IMAGE_ROOT_FS_UUID=$(uuidgen -r)
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if echo "$FS_TYPE" | grep -q "^ext" && [ -z "${DIB_IMAGE_ROOT_FS_UUID}" ]; then
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echo "ext filesystem detected but no DIB_IMAGE_ROOT_FS_UUID found."
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echo "Is the uuidgen utility installed on your system?"
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exit 1
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fi
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# FS_TYPE isn't available until after we source img-defaults
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if [ -z "$DIB_ROOT_LABEL" ]; then
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# NOTE(bnemec): XFS has a limit of 12 characters for filesystem labels
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# Not changing the default for other filesystems to maintain backwards compatibility
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if [ "$FS_TYPE" = "xfs" ]; then
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DIB_ROOT_LABEL="img-rootfs"
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else
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DIB_ROOT_LABEL="cloudimg-rootfs"
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fi
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fi
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# xattr support cannot be relied upon with tmpfs builds
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# some kernels supoprt it, some don't
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if [[ -n "${GENTOO_PROFILE}" ]]; then
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if [[ "${GENTOO_PROFILE}" =~ "hardened" ]]; then
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echo 'disabling tmpfs for gentoo hardened build'
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export DIB_NO_TMPFS=1
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fi
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fi
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mk_build_dir
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create_base
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# This variable needs to be propagated into the chroot
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mkdir -p $TMP_HOOKS_PATH/environment.d
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echo "export DIB_DEFAULT_INSTALLTYPE=\${DIB_DEFAULT_INSTALLTYPE:-\"${DIB_DEFAULT_INSTALLTYPE}\"}" > $TMP_HOOKS_PATH/environment.d/11-dib-install-type.bash
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run_d extra-data
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# Run pre-install scripts. These do things that prepare the chroot for package installs
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run_d_in_target pre-install
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do_extra_package_install
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# Call install scripts to pull in the software users want.
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run_d_in_target install
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run_d_in_target post-install
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# ensure we do not have a lost+found directory in the root folder
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# that could cause copy to fail (it will be created again later
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# when creating the file system, if it needs such directory)
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if [ -e "$TMP_BUILD_DIR/mnt/lost+found" ]; then
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sudo rm -rf "$TMP_BUILD_DIR/mnt/lost+found"
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fi
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# Free up /mnt
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unmount_image
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mv $TMP_BUILD_DIR/mnt $TMP_BUILD_DIR/built
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# save xtrace state, as we want to turn it off to avoid spamming the
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# logs with du output below.
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xtrace=$(set +o | grep xtrace)
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if [ -n "$DIB_IMAGE_SIZE" ]; then
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du_size=$(echo "$DIB_IMAGE_SIZE" | awk '{printf("%d\n",$1 * 1024 *1024)}')
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else
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set +o xtrace
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echo "Calculating image size (this may take a minute)..."
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du_output=$(sudo du -a -c -x ${TMP_BUILD_DIR}/built)
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# the last line is the total size from "-c".
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# scale this by 0.6 to create a slightly bigger image
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du_size=$(echo "$du_output" | tail -n1 | cut -f1 | \
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awk '{print int($1 / 0.6)}')
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$xtrace
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fi
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if [[ "${DIB_SHOW_IMAGE_USAGE:-0}" != 0 ]]; then
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set +o xtrace
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if [ -z "$du_output" ]; then
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du_output=$(sudo du -a -c -x ${TMP_BUILD_DIR}/built)
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fi
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du_output_show="sort -nr |
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numfmt --to=iec-i --padding=7
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--suffix=B --field=1 --from-unit=1024"
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# by default show the 10MiB and greater files & directories -- a
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# dir with lots of little files will still show up, but this helps
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# signal:noise ratio
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if [[ ${DIB_SHOW_IMAGE_USAGE_FULL:-0} == 0 ]]; then
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# numfmt will start giving a decimal place when < 10MiB
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du_output_show+="| egrep 'MiB|GiB|TiB|PiB' | grep -v '\..MiB'"
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echo "================================="
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echo "Image size report (files > 10MiB)"
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echo "================================="
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else
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echo "================="
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echo "Image size report"
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echo "================="
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fi
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eval ${du_output_show} <<< "$du_output"
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echo
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echo "===== end image size report ====="
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echo
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$xtrace
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fi
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if [ "$FS_TYPE" = "ext4" ] ; then
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# Very conservative to handle images being resized a lot
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# We set journal size to 64M so our journal is large enough when we
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# perform an FS resize.
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MKFS_OPTS="-i 4096 -J size=64 $MKFS_OPTS"
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# Grow the image size to account for the journal, only if the user
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# has not asked for a specific size.
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if [ -z "$DIB_IMAGE_SIZE" ]; then
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du_size=$(( $du_size + 65536 ))
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fi
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fi
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# Rounding down size so that is is a multiple of 64, works around a bug in
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# qemu-img that may occur when compressing raw images that aren't a multiple
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# of 64k. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1180021
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du_size=$(echo "$du_size" | awk ' { if ($1 % 64 != 0) print $1 + 64 - ( $1 % 64); else print $1; } ')
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truncate -s${du_size}K $TMP_IMAGE_PATH
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if [ -n "$MAX_ONLINE_RESIZE" ]; then
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MKFS_OPTS="-E resize=$MAX_ONLINE_RESIZE $MKFS_OPTS"
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fi
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LOOPDEV=$(sudo losetup --show -f $TMP_IMAGE_PATH)
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export EXTRA_UNMOUNT="detach_loopback $LOOPDEV"
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export IMAGE_BLOCK_DEVICE=$LOOPDEV
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eval_run_d block-device "IMAGE_BLOCK_DEVICE="
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sudo mkfs $MKFS_OPTS -t $FS_TYPE -L ${DIB_ROOT_LABEL} ${IMAGE_BLOCK_DEVICE}
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# Tuning the rootfs uuid works only for ext filesystems.
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if echo "$FS_TYPE" | grep -q "^ext"; then
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sudo tune2fs -U ${DIB_IMAGE_ROOT_FS_UUID} ${IMAGE_BLOCK_DEVICE}
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fi
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mkdir $TMP_BUILD_DIR/mnt
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sudo mount ${IMAGE_BLOCK_DEVICE} $TMP_BUILD_DIR/mnt
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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]}" == "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
|
|
else
|
|
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
|