create-ovirt-iso-nodes

   1 #!/bin/bash
   2 #
   3 # Create fake oVirt Nodes for testing CDROM boot
   4 # Copyright 2008 Red Hat, Inc.
   5 # Written by Perry Myers <pmyers@redhat.com>
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; version 2 of the License.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU Library General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19
  20 PATH=$PATH:/sbin:/usr/sbin
  21
  22 ME=$(basename "$0")
  23 warn() { printf '%s: %s\n' "$ME" "$*" >&2; }
  24 try_h() { printf "Try \`$ME -h' for more information.\n" >&2; }
  25 die() { warn "$@"; try_h; exit 1; }
  26
  27 BRIDGENAME=ovirtbr0
  28 IMGDIR_DEFAULT=/var/lib/libvirt/images
  29 imgdir=$IMGDIR_DEFAULT
  30 NODEIMG_DEFAULT=/usr/share/ovirt-node-image/ovirt-node-image.iso
  31 nodeimg=$NODEIMG_DEFAULT
  32
  33 NODE_DISK_FMT=qcow2
  34 NODE_DISK_SIZE=128M
  35
  36 gen_fake_managed_node() {
  37     local num=$1
  38     local nodeimg=$2
  39     local last_mac=$(( 54 + $num ))
  40
  41     echo "Creating fake node$num using $nodeimg..."
  42     virsh destroy node$num > /dev/null 2>&1
  43     virsh undefine node$num > /dev/null 2>&1
  44     rm -f $imgdir/node${i}-sda.$NODE_DISK_FMT
  45     qemu-img create -f $NODE_DISK_FMT $imgdir/node${i}-sda.$NODE_DISK_FMT \
  46         $NODE_DISK_SIZE
  47     # FIXME: virt-install should be changed to have a --nostart parameter
  48     # that just defines the VM w/o starting it.
  49     virt-install --name=node$num --ram=512 --vcpus=1 \
  50         --disk path=$imgdir/node${i}-sda.$NODE_DISK_FMT \
  51         --cdrom=$nodeimg --livecd \
  52         --network=bridge:$BRIDGENAME --mac=00:16:3e:12:34:$last_mac \
  53         --vnc --accelerate --hvm --noautoconsole \
  54         --os-type=linux --os-variant=fedora9 \
  55         --force --noreboot
  56     virsh destroy node$num > /dev/null 2>&1
  57     echo "node$num created"
  58 }
  59
  60 usage() {
  61     case $# in 1) warn "$1"; try_h; exit 1;; esac
  62     cat <<EOF
  63 Usage: $ME [-d image_dir] [-n node.iso]
  64   -n: node.iso to boot (default: $NODEIMG_DEFAULT)
  65   -d: directory to place virtual disk (default: $IMGDIR_DEFAULT)
  66   -h: display this help and exit
  67 EOF
  68 }
  69
  70 err=0 help=0
  71 while getopts :d:n:h c; do
  72     case $c in
  73         n) nodeimg=$OPTARG;;
  74         d) imgdir=$OPTARG;;
  75         h) help=1;;
  76         '?') err=1; warn "invalid option: \`-$OPTARG'";;
  77         :) err=1; warn "missing argument to \`-$OPTARG' option";;
  78         *) err=1; warn "internal error: \`-$OPTARG' not handled";;
  79     esac
  80 done
  81 test $err = 1 && { try_h; exit 1; }
  82 test $help = 1 && { usage; exit 0; }
  83
  84 # first, check to see we are root
  85 if [ $( id -u ) -ne 0 ]; then
  86     die "Must run as root"
  87 fi
  88
  89 mkdir -p $imgdir
  90
  91 test -f $nodeimg || die "could not find $nodeimg"
  92 cp $nodeimg $imgdir
  93
  94 # define the fake managed nodes we will use.
  95 for i in `seq 6 9` ; do
  96     gen_fake_managed_node $i $imgdir/$(basename $nodeimg)
  97 done