3 ##############################################################################
4 # Copyright (c) 2015 Ericsson AB and others.
6 # All rights reserved. This program and the accompanying materials
7 # are made available under the terms of the Apache License, Version 2.0
8 # which accompanies this distribution, and is available at
9 # http://www.apache.org/licenses/LICENSE-2.0
10 ##############################################################################
12 # yardstick-img-modify - download and modify a Ubuntu cloud image
14 # The actual customization is done by a script passed with an absolute path as
15 # the only single argument. The command needs to be invoked as sudo
18 # yardstick-img-modify /home/yardstick/tools/ubuntu-server-cloudimg-modify.sh
20 # Warning: the script will create files by default in:
21 # /tmp/workspace/yardstick
22 # the files will be owned by root!
24 # TODO: image resize is needed if the base image is too small
35 test $# -eq 1 || die "no image specific script as argument"
36 test $(id -u) -eq 0 || die "should invoke using sudo"
40 mountdir="/mnt/yardstick"
41 workspace=${WORKSPACE:-"/tmp/workspace/yardstick"}
42 host=${HOST:-"cloud-images.ubuntu.com"}
43 release=${RELEASE:-"trusty"}
44 image_path="${release}/current/${release}-server-cloudimg-${YARD_IMG_ARCH}-disk1.img"
45 image_url=${IMAGE_URL:-"https://${host}/${image_path}"}
46 md5sums_path="${release}/current/MD5SUMS"
47 md5sums_url=${MD5SUMS_URL:-"https://${host}/${md5sums_path}"}
49 imgfile="${workspace}/yardstick-${release}-server.img"
50 raw_imgfile="${workspace}/yardstick-${release}-server.raw"
51 filename=$(basename $image_url)
53 # download and checksum base image, conditionally if local copy is outdated
55 test -d $workspace || mkdir -p $workspace
57 rm -f MD5SUMS # always download the checksum file to a detect stale image
59 test -e $filename || wget -nc --progress=dot:giga $image_url
60 grep $filename MD5SUMS | md5sum -c ||
63 wget -nc --progress=dot:giga $image_url
64 grep $filename MD5SUMS | md5sum -c
67 for i in $(seq 0 9); do
68 [ -a /dev/loop$i ] || mknod -m 660 /dev/loop$i b 7 $i
71 if [ $YARD_IMG_ARCH = "arm64" ]; then
73 if [ ! -f /tmp/vivid-server-cloudimg-arm64-kernel-info.txt ]; then
74 wget http://cloud-images.ubuntu.com/vivid/current/vivid-server-cloudimg-arm64-kernel-info.txt
76 export VIVID_KERNEL_VERSION=$(cut -d$'\t' -f4 vivid-server-cloudimg-arm64-kernel-info.txt)
77 mkdir -p /tmp/vivid-modules
78 if [ ! -f "/tmp/vivid-server-cloudimg-arm64.tar.gz" ]; then
81 if [ ! -f "/tmp/vivid-server-cloudimg-arm64.img" ]; then
82 tar zxvf vivid-server-cloudimg-arm64.tar.gz vivid-server-cloudimg-arm64.img
85 mount /tmp/vivid-server-cloudimg-arm64.img /mnt/vivid
86 cp -r /mnt/vivid/lib/modules/$(echo $VIVID_KERNEL_VERSION | cut -d'-' -f3,4,5) /tmp/vivid-modules
88 rm /tmp/vivid-server-cloudimg-arm64.img
91 qemu-img convert $filename $raw_imgfile
97 # qemu-img resize $raw_imgfile +5GB
98 if [ $YARD_IMG_ARCH = "arm64" ]; then
99 echo -e "d\nn\np\n1\n\n\nw" | fdisk $raw_imgfile
103 loopdevice=$(kpartx -l $raw_imgfile | head -1 | cut -f1 -d ' ')
105 kpartx -av $raw_imgfile
106 if [ $YARD_IMG_ARCH = "arm64" ]; then
107 e2fsck -f /dev/mapper/$loopdevice
108 resize2fs /dev/mapper/$loopdevice
110 # for trouble shooting
113 fdisk -l /dev/${loopdevice:0:5} || true
114 mount /dev/mapper/$loopdevice $mountdir
115 mount -t proc none $mountdir/proc
117 if [ $YARD_IMG_ARCH = "arm64" ]; then
118 cp -r /tmp/vivid-modules/$(echo $VIVID_KERNEL_VERSION | cut -d'-' -f3,4,5) "$mountdir/lib/modules"
119 cp $(which "qemu-aarch64-static") "$mountdir/usr/bin"
121 cp $cmd $mountdir/$(basename $cmd)
124 # modify image running a script using in a chrooted environment
126 # resolv.conf does not exist in base image, pass nameserver value from host
127 nameserver_ip=$(grep -m 1 '^nameserver' \
128 /etc/resolv.conf | awk '{ print $2 '})
130 # prevent init scripts from running during install
131 echo $'#!/bin/sh\nexit 101' >$mountdir/usr/sbin/policy-rc.d
132 chmod a+x $mountdir/usr/sbin/policy-rc.d
134 chroot $mountdir /$(basename $cmd) $nameserver_ip
136 rm -rf $mountdir/usr/sbin/policy-rc.d
138 umount -f $mountdir/proc
141 qemu-img convert -c -o compat=0.10 -O qcow2 $raw_imgfile $imgfile
143 if dmsetup table | grep $loopdevice; then
144 dmsetup clear $loopdevice || true
148 # cleanup (umount) the image
150 # designed to be idempotent
151 mount | grep $mountdir/proc && umount $mountdir/proc
152 mount | grep $mountdir && umount $mountdir
153 mount | grep "/mnt/vivid" && umount "/mnt/vivid"
154 if [ -f $raw_imgfile ]; then
155 kpartx -dv $raw_imgfile || true
168 if [ -z "$exitcode" ]; then
176 echo "Image build failed with $exitcode"
184 trap "error_trap" EXIT SIGTERM
193 echo "the modified image is found here: $imgfile"