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#!/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
# Set/override locale. This ensures consistency in sorting etc. We
# need to choose a lowest-common denominator locale, as this is
# applied when running in the building chroot too (maybe a bug and we
# should prune this?). Thus "C" --centOS 7 doesn't include C.utf-8
# (fedora does, centos 8 probably will). Note: LC_ALL to really
# override this; it overrides LANG and all other LC_ vars
export LC_ALL=C
# Store our initial environment and command line args for later
export DIB_ARGS="$@"
export DIB_ENV=$(export | grep ' DIB_.*=')
SCRIPTNAME=$(basename $0)
if [ -z "$_LIB" ]; then
echo "_LIB not set!"
exit 1
fi
_BASE_ELEMENT_DIR=$(${DIB_PYTHON_EXEC:-python} -c '
import diskimage_builder.paths
diskimage_builder.paths.show_path("elements")')
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|arm64 -- 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 " --logfile -- save run output to given logfile"
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[,p2...] [-p p3] -- extra packages to install in the image. Runs once, after 'install.d' phase. Can be specified mulitple times"
fi
echo " -h|--help -- display this help and exit"
echo " --version -- display version and exit"
echo
echo "Environment Variables:"
echo " (this is not a complete list)"
echo
echo " * ELEMENTS_PATH: specify external locations for the elements. As for \$PATH"
echo " * DIB_NO_TIMESTAMP: no timestamp prefix on output. Useful if capturing output"
echo " * DIB_QUIET: do not output log output to stdout. See --logfile"
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() {
${DIB_PYTHON_EXEC:-python} -c "from diskimage_builder import version; print(version.version_info.version_string())"
}
DIB_DEBUG_TRACE=${DIB_DEBUG_TRACE:-0}
INSTALL_PACKAGES=""
IMAGE_TYPES=("qcow2")
COMPRESS_IMAGE="true"
ROOT_LABEL=""
DIB_DEFAULT_INSTALLTYPE=${DIB_DEFAULT_INSTALLTYPE:-"source"}
MKFS_OPTS=""
ACI_MANIFEST=${ACI_MANIFEST:-}
DOCKER_TARGET=""
LOGFILE=""
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:,logfile: -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) 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 ;;
--logfile) export LOGFILE=$2; shift 2 ;;
--) shift ; break ;;
*) echo "Internal error!" ; exit 1 ;;
esac
done
export DIB_DEBUG_TRACE
# TODO: namespace this under ~/.cache/dib/ for consistency
export DIB_IMAGE_CACHE=${DIB_IMAGE_CACHE:-~/.cache/image-create}
mkdir -p $DIB_IMAGE_CACHE
# We have a couple of critical sections (touching parts of the host
# system or download images to common cache) that we use flock around.
# Use this directory for lockfiles.
export DIB_LOCKFILES=${DIB_LOCKFILES:-~/.cache/dib/lockfiles}
mkdir -p $DIB_LOCKFILES
if [ "$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
# We send stdout & stderr through "outfilter" which does timestamping,
# basic filtering and log file output.
_TS_FLAG=""
if [[ "${DIB_NO_TIMESTAMP:-0}" -eq 1 ]]; then
_TS_FLAG="--no-timestamp"
fi
_QUIET_FLAG="-v"
if [[ "${DIB_QUIET:-0}" -eq 1 ]]; then
_QUIET_FLAG=""
fi
_LOGFILE_FLAG=""
if [[ -n "${LOGFILE}" ]]; then
echo "Output logs going to: ${LOGFILE}"
_LOGFILE_FLAG="-o ${LOGFILE}"
fi
# Save the existing stdout to fd3
exec 3>&1
exec 1> >( ${DIB_PYTHON_EXEC:-python} $_LIB/outfilter.py ${_TS_FLAG} ${_QUIET_FLAG} ${_LOGFILE_FLAG} ) 2>&1
# Display the current file/function/line in the debug output
function _ps4 {
IFS=" " called=($(caller 0))
local f=$(readlink -f ${called[2]})
# As we're being run out of the python package's lib/ dir (either
# virtualenv or system), we can strip everything before
# "site-packages" to significantly shorten the line without really
f=${f##*site-packages/}
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
echo "diskimage-builder version $(show_version)"
# If no elements are specified theres no way we can succeed
if [ -z "$*" ]; 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[$X]}" in
qcow2)
if ! type qemu-img > /dev/null 2>&1; then
echo "qcow2 output format specified but qemu-img executable not found."
exit 1
fi
;;
tgz)
# Force tar to be created.
IMAGE_TYPES+=('tar')
;;
vhd)
if ! type vhd-util > /dev/null 2>&1; then
echo "vhd output format specified but no vhd-util executable found."
exit 1
fi
;;
squashfs)
if ! type mksquashfs > /dev/null 2>&1; then
echo "squashfs output format specified but no mksquashfs executable found."
exit 1
fi
;;
docker)
if ! type docker > /dev/null 2>&1; then
echo "docker output format specified but no docker executable found."
exit 1
fi
if [ -z "$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 ! type fstrim > /dev/null 2>&1; 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
# 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 the YAML file with the final and raw configuration for
# the block device layer.
mkdir -p ${TMP_BUILD_DIR}/block-device
BLOCK_DEVICE_CONFIG_YAML=${TMP_BUILD_DIR}/block-device/config.yaml
block_device_create_config_file "${BLOCK_DEVICE_CONFIG_YAML}"
# Write out the parameter file
DIB_BLOCK_DEVICE_PARAMS_YAML=${TMP_BUILD_DIR}/block-device/params.yaml
export DIB_BLOCK_DEVICE_PARAMS_YAML
cat >${DIB_BLOCK_DEVICE_PARAMS_YAML} <<EOF
config: ${BLOCK_DEVICE_CONFIG_YAML}
image-dir: ${TMP_IMAGE_DIR}
root-fs-type: ${FS_TYPE}
root-label: ${ROOT_LABEL}
mount-base: ${TMP_BUILD_DIR}/mnt
build-dir: ${TMP_BUILD_DIR}
EOF
dib-block-device init
# Need to get the real root label because it can be overwritten
# by the BLOCK_DEVICE_CONFIG.
DIB_ROOT_LABEL=$(dib-block-device getval root-label)
export DIB_ROOT_LABEL
# Need to get the real fs type for the root filesystem
DIB_ROOT_FSTYPE=$(dib-block-device getval root-fstype)
export DIB_ROOT_FSTYPE
# retrieve mount points so we can reuse in elements
DIB_MOUNTPOINTS=$(dib-block-device getval mount-points)
export DIB_MOUNTPOINTS
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}\"}" > $TMP_HOOKS_PATH/environment.d/11-dib-install-type.bash
run_d extra-data
# Run pre-install scripts. These do things that prepare the chroot for package installs
run_d_in_target pre-install
# Call install scripts to pull in the software users want.
run_d_in_target install
do_extra_package_install
run_d_in_target post-install
# ensure we do not have a lost+found directory in the root folder
# that could cause copy to fail (it will be created again later
# when creating the file system, if it needs such directory)
if [ -e "$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 ${du_output}
if [ "$DIB_ROOT_FSTYPE" = "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=$(( $du_size + 65536 ))
fi
fi
# Rounding down size so that is is a multiple of 64, works around a bug in
# qemu-img that may occur when compressing raw images that aren't a multiple
# of 64k. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1180021
export DIB_IMAGE_SIZE=$(echo "$du_size" | awk ' { if ($1 % 64 != 0) print $1 + 64 - ( $1 % 64); else print $1; } ')
if [ -n "$MAX_ONLINE_RESIZE" ]; then
MKFS_OPTS="-E resize=$MAX_ONLINE_RESIZE $MKFS_OPTS"
fi
export TMP_IMAGE_DIR
# Try the 'old fashioned' way calling the block device
# phase. If this gives no result, use the configuration based approach:
eval_run_d block-device "IMAGE_BLOCK_DEVICE="
if [ -z ${IMAGE_BLOCK_DEVICE} ] ; then
# For compatibily reasons in addition to the YAML configuration
# there is the need to handle the old environment variables.
echo "image-size: ${DIB_IMAGE_SIZE}KiB" >> ${DIB_BLOCK_DEVICE_PARAMS_YAML}
if [ -n "${MKFS_OPTS}" ] ; then
echo "root-fs-opts: '${MKFS_OPTS}'" >> ${DIB_BLOCK_DEVICE_PARAMS_YAML}
fi
# After changeing the parameters, there is the need to
# re-run dib-block-device init because some value might
# change based on the new set parameters.
dib-block-device init
# values to dib-block-device: using the YAML config and
dib-block-device create
# This is the device (/dev/loopX). It's where to install the
# bootloader.
IMAGE_BLOCK_DEVICE=$(dib-block-device getval image-block-device)
export IMAGE_BLOCK_DEVICE
# Similar to above, but all mounted devices. This is handy for
# some bootloaders that have multi-partition layouts and want to
# copy things to different places other than just
# IMAGE_BLOCK_DEVICE. "eval" this into an array as needed
IMAGE_BLOCK_DEVICES=$(dib-block-device getval image-block-devices)
export IMAGE_BLOCK_DEVICES
# Write the fstab
dib-block-device writefstab
fi
# XXX: needed?
LOOPDEV=${IMAGE_BLOCK_DEVICE}
# At this point, dib-block-device has created the raw image file
# (IMAGE_BLOCK_DEVICE) and mounted all the partitions under
# $TMP_BUILD_DIR/mnt for us. We can now copy into the final image.
# 'mv' is not usable here - especially when a top level directory
# has the same name as a mount point of a partition. If so, 'mv'
# will complain:
# mv: inter-device move failed: '...' to '...'; \
# unable to remove target: Device or resource busy
# therefore a 'cp' and 'rm' approach is used.
sudo cp -ra ${TMP_BUILD_DIR}/built/* $TMP_BUILD_DIR/mnt
sudo rm -fr ${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
# Unmount and cleanup the /mnt and /build subdirectories, to save
# space before converting the image to some other format.
# XXX ? needed?
export EXTRA_UNMOUNT=""
unmount_image
TMP_IMAGE_PATH=$(dib-block-device getval image-path)
export TMP_IMAGE_PATH
# remove all mounts
dib-block-device umount
dib-block-device cleanup
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
# Restore fd 1&2 from the outfilter.py redirect back to the original
# saved fd. Note small hack that we can't really wait properly for
# outfilter.py so put in a sleep (might be possible to use coproc for
# this...?)
#
# TODO(ianw): probably better to cleanup the exit handler a bit for
# this? We really want some helper functions that append to the exit
# handler so we can register multiple things.
set +o xtrace
echo "Build completed successfully"
exec 1>&3 2>&3
sleep 1
# All done!
trap EXIT