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Recover iso-image-create script

This script was removed from IPA with CoreOS support, but it seems
to be quite generic. Recover and document it.

Change-Id: I014ada4509e60541bf12ef2bce9915afd8858d54
changes/59/685059/2
Dmitry Tantsur 2 years ago
committed by Mark Goddard
parent
commit
6a07f96f2f
  1. 14
      doc/source/admin/dib.rst
  2. 168
      tools/iso-image-create

14
doc/source/admin/dib.rst

@ -68,6 +68,20 @@ To use a specific branch of ironic-python-agent, use:
export DIB_REPOREF_ironic_python_agent=origin/stable/queens
ISO Images
~~~~~~~~~~
Additionally, the IPA ramdisk can be packaged inside of an ISO for use with
some virtual media drivers. Use the ``iso-image-create`` utility, passing it
the initrd and the kernel, for example:
.. code-block:: console
./tools/iso-image-create -o /path/to/output.iso -i /path/to/ipa.initrd -k /path/to/ipa.kernel
This is a generic tool that can be used to combine any initrd and kernel into
a suitable ISO for booting, and so should work against any IPA ramdisk.
Advanced options
----------------

168
tools/iso-image-create

@ -0,0 +1,168 @@
#!/bin/bash
#
# Copyright 2012 Hewlett-Packard Development Company, L.P.
# All Rights Reserved.
#
# 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.
#
# This script generates iso image from the given kernel and ramdisk
SCRIPTNAME=`basename $0`
TMP_BUILD_DIR="/tmp/$SCRIPTNAME.$$"
QEMU_IMG="/usr/bin/qemu-img"
MKISOFS="/usr/bin/mkisofs"
function show_options() {
echo "Usage: ${SCRIPTNAME} [options]"
echo
echo "Options:"
echo " -o output filename "
echo " -i initrd "
echo " -k kernel "
}
function cleanup() {
v_print "Cleaning up.."
rm -rf $TMP_BUILD_DIR
}
function err_print() {
echo "ERROR: $@" 1>&2;
}
function v_print() {
echo "$*"
}
# Parse command line options
ARGS=`getopt -o "o:i:k:" -l "output,initrd,kernel:" \
-n "$SCRIPTNAME" -- "$@"`
if [ $? -ne 0 ];
then
exit 1
fi
eval set -- "$ARGS"
while true ; do
case "$1" in
-o) OUTPUT_FILENAME=$2; shift 2 ;;
-i) INITRD=$2; shift 2 ;;
-k) KERNEL=$2; shift 2 ;;
# *) show_options ; exit 1 ;;
--) shift; break ;;
esac
done
# Verify whether kernel, initrd, and the image file is present
if [ -z "$OUTPUT_FILENAME" ]; then
err_print "Output filename not provided."
show_options
exit 1
fi
if [ -z "$INITRD" ]; then
err_print "Initrd not provided."
show_options
exit 1
fi
if [ -z "$KERNEL" ]; then
err_print "Kernel not provided."
show_options
exit 1
fi
# Create a temporary build directory for holiding the contents of iso
TMP_IMAGE_DIR="$TMP_BUILD_DIR/image"
v_print "Creating temporary directory $TMP_IMAGE_DIR"
mkdir -p "$TMP_IMAGE_DIR"
# Copy isolinux bin to the isolinux directory
mkdir -p "$TMP_IMAGE_DIR/isolinux"
v_print "Copying isolinux.bin"
if [ -f /usr/share/syslinux/isolinux.bin ]
then
cp /usr/share/syslinux/isolinux.bin "$TMP_IMAGE_DIR/isolinux"
elif [ -f /usr/lib/syslinux/isolinux.bin ]
then
cp /usr/lib/syslinux/isolinux.bin "$TMP_IMAGE_DIR/isolinux"
elif [ -f /usr/lib/ISOLINUX/isolinux.bin ]
then
cp /usr/lib/ISOLINUX/isolinux.bin "$TMP_IMAGE_DIR/isolinux"
else
err_print "Could not find isolinux.bin. Install syslinux or isolinux?"
cleanup
exit 1
fi
# Copy ldlinux.c32 to the isolinux directory
v_print "Copying ldlinux.c32"
if [ -f /usr/share/syslinux/ldlinux.c32 ]
then
cp /usr/share/syslinux/ldlinux.c32 "$TMP_IMAGE_DIR/isolinux"
elif [ -f /usr/lib/syslinux/modules/bios/ldlinux.c32 ]
then
cp /usr/lib/syslinux/modules/bios/ldlinux.c32 "$TMP_IMAGE_DIR/isolinux"
fi
# Copy initrd, kernel
v_print "Copying kernel to $TMP_IMAGE_DIR/vmlinuz"
cp $KERNEL "$TMP_IMAGE_DIR/vmlinuz"
if [ $? -ne 0 ]; then
err_print "Failed to copy $KERNEL to $TMP_IMAGE_DIR"
cleanup
exit 1
fi
v_print "Copying initrd to $TMP_IMAGE_DIR/initrd"
cp $INITRD "$TMP_IMAGE_DIR/initrd"
if [ $? -ne 0 ]; then
err_print "Failed to copy $INITRD to $TMP_IMAGE_DIR"
cleanup
exit 1
fi
# Generate isolinux.cfg for default booting
v_print "Generating isolinux.cfg"
echo "\
DEFAULT install
LABEL install
menu label "Install image"
kernel /vmlinuz
append initrd=/initrd boot_method=vmedia --
TIMEOUT 5
PROMPT 0 " > "$TMP_IMAGE_DIR/isolinux/isolinux.cfg"
# Convert relative path output filename to absolute path
echo $OUTPUT_FILENAME | grep -q '^/'
if [ $? -ne 0 ]; then
OUTPUT_FILENAME="$PWD/$OUTPUT_FILENAME"
fi
# Create the ISO
v_print "Generating the ISO"
cd $TMP_IMAGE_DIR && $MKISOFS -r -V "INSTALL_IMAGE" -cache-inodes -J -l -b isolinux/isolinux.bin -no-emul-boot -boot-load-size 4 -boot-info-table -o $OUTPUT_FILENAME .
# Cleanup
cleanup
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