3 # Thierry Parmentelat <thierry.parmentelat@inria.fr>
4 # Copyright (C) 2010 INRIA
6 # it does the following:
7 # (*) close all file descriptors and redirect output to log.txt
8 # this is because it is designed for use through ssh from a remote test master controller
9 # (*) initialize a disk image if it does not exist yet
10 # (*) starts a qemu instance
12 # cd in this command's directory
13 COMMAND=$(basename $0)
21 DISK_IMAGE=hdd-${DISK_FORMAT}-${DISK_SIZE}.img
25 ####### we want this script to be invokable through ssh without the ssh client to remain hanging
30 # redirect stderr on stdout
33 ########## from the test environment
34 # expected vars are MACADDR, NODE_ISO, HOSTNAME, IP and TARGET_ARCH
36 [ -f "$CONFIG" ] || { echo "Config file for qemu $CONFIG not found in $(pwd)" ; exit 1 ; }
39 # NOTE: check if the machine supports 64bits. We'll add -no-kqemu only
40 # if it does. On 32bits host, qemu-system-x86_64 doesn't accept this
41 # parameter (although it's there in the man page)
42 function is_64bits () {
43 return $(cat /proc/cpuinfo | grep "^flags" | grep " lm " > /dev/null)
47 # the launcher, depending on target arch
48 # make sure to check qemu-kill-node for consistency
50 # use kvm if available
51 has_kvm=$(type -p qemu-kvm)
52 if [ -n "$has_kvm" ] ; then
53 QEMU="qemu-kvm" ; ARGS=""
56 i386) QEMU=qemu ; ARGS="" ;;
57 x86_64) QEMU=qemu-system-x86_64 ; if is_64bits; then ARGS="-no-kqemu"; else ARGS=""; fi ;;
58 *) echo "Cannot handle TARGET_ARCH=$TARGET_ARCH"; exit 1 ;;
62 echo "Running $COMMAND in $(pwd)"
63 echo "Starting at $(date)"
65 #Creating new DISK_IMAGE if needed only
66 if [ -f $DISK_IMAGE ] ; then
67 echo "Using existing $DISK_IMAGE"
69 echo -n "Creating hard disk image (${DISK_SIZE}) as $DISK_IMAGE .. "
70 img=$(qemu-img create -f ${DISK_FORMAT} $DISK_IMAGE ${DISK_SIZE})
78 echo 'Trying to load the kqemu module'
79 if modprobe kqemu &> /dev/null ; then
82 echo "WARNING : Could not modprobe kqemu"
85 echo 'Checking for a loaded kqemu module'
87 echo 'Checking for /dev/kqemu'
90 echo 'Cleaning up pid file'
97 ARGS="$ARGS -m ${RAM}"
98 ARGS="$ARGS -hda ${DISK_IMAGE}"
99 ARGS="$ARGS -nographic"
100 ARGS="$ARGS -pidfile qemu.pid"
103 ARGS="$ARGS -cdrom ${NODE_ISO}"
105 ARGS="$ARGS -net nic,macaddr=${MACADDR}"
107 ARGS="$ARGS -net tap,script=${SCRIPT}"
108 echo "Running $QEMU $ARGS"