X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=system%2Ftemplate-qemu%2Fqemu-start-node;h=7198b0352204e6062d5af6666b0c50339e6c71a6;hb=668b04ee255f8fc61d56e81b16d1fefa1de64773;hp=8556f4fc0d3c7e4020afdcb312d898f5c8f3f22e;hpb=3186b0ad726b273f629092591a250f19b112bc9d;p=tests.git

diff --git a/system/template-qemu/qemu-start-node b/system/template-qemu/qemu-start-node
index 8556f4f..7198b03 100755
--- a/system/template-qemu/qemu-start-node
+++ b/system/template-qemu/qemu-start-node
@@ -1,17 +1,34 @@
 #!/bin/bash
 
+# Thierry Parmentelat <thierry.parmentelat@inria.fr>
+# Copyright (C) 2010 INRIA 
+#
+# it does the following:
+# (*) close all file descriptors and redirect output to log.txt 
+#     this is because it is designed for use through ssh from a remote test master controller
+# (*) initialize a disk image if it does not exist yet
+# (*) starts a qemu instance 
+
 # cd in this command's directory
 COMMAND=$(basename $0)
 cd $(dirname $0)
 
 ########## globals
-RAM=1024
-DISK_SIZE=18G
-HDA=hdd-cow2-${DISK_SIZE}.img
-QEMU_CREATE_IMAGE="qemu-img create -f qcow2 $HDA ${DISK_SIZE}"
+# 2 gigabytes ram
+RAM=2048
+DISK_SIZE=100G
+DISK_FORMAT=qcow2
+DISK_IMAGE=hdd-${DISK_FORMAT}-${DISK_SIZE}.img
 
 SCRIPT=qemu-ifup
-TAP="tap,script=$SCRIPT"
+
+####### we want this script to be invokable through ssh without the ssh client to remain hanging
+# close stdin
+exec <&-
+# redirect stdout
+exec >> log.txt
+# redirect stderr on stdout
+exec 2>&1
 
 ########## from the test environment
 # expected vars are MACADDR, NODE_ISO, HOSTNAME, IP and TARGET_ARCH
@@ -19,26 +36,38 @@ CONFIG=qemu.conf
 [ -f "$CONFIG" ] || { echo "Config file for qemu $CONFIG not found in $(pwd)" ; exit 1 ; }
 . $CONFIG
 
-# the launcher, depending on local/target archs
+# NOTE: check if the machine supports 64bits. We'll add -no-kqemu only
+# if it does. On 32bits host, qemu-system-x86_64 doesn't accept this
+# parameter (although it's there in the man page)
+function is_64bits () {
+    return $(cat /proc/cpuinfo | grep "^flags" | grep " lm " > /dev/null)
+}
+
+
+# the launcher, depending on target arch
 # make sure to check qemu-kill-node for consistency
-archs="$(uname -i)+$TARGET_ARCH"
-case $archs in
-    i386+i386)		QEMU=qemu;;
-    i386+x86_64)	QEMU=qemu-system-x86_64;;
-    x86_64+i386)	QEMU=qemu;;
-    x86_64+x86_64)	QEMU=qemu-system-x86_64;;
-esac
+
+# use kvm if available
+has_kvm=$(type -p qemu-kvm)
+if [ -n "$has_kvm" ] ; then
+    QEMU="qemu-kvm" ; ARGS=""
+else
+    case $TARGET_ARCH in
+	i386)		QEMU=qemu ; ARGS="" ;;
+	x86_64)		QEMU=qemu-system-x86_64 ; if is_64bits; then ARGS="-no-kqemu"; else ARGS=""; fi ;;
+	*)			echo "Cannot handle TARGET_ARCH=$TARGET_ARCH"; exit 1 ;;
+    esac
+fi
 
 echo "Running $COMMAND in $(pwd)"
 echo "Starting at $(date)"
 
-#Creating new HDA if needed only
-#using qcow2 disk image format which is essential to support VM snapshots
-if [ -f $HDA ] ; then
-    echo "Using existing $HDA"
+#Creating new DISK_IMAGE if needed only
+if [ -f $DISK_IMAGE ] ; then
+    echo "Using existing $DISK_IMAGE"
 else
-    echo -n "Creating hard disk image (${DISK_SIZE}) as $HDA .. "
-    img=$($QEMU_CREATE_IMAGE)
+    echo -n "Creating hard disk image (${DISK_SIZE}) as $DISK_IMAGE .. "
+    img=$(qemu-img create -f ${DISK_FORMAT} $DISK_IMAGE ${DISK_SIZE})
     if [ -z "$img" ];then
 	echo "Failed"
 	exit 1
@@ -46,9 +75,35 @@ else
     echo "Done"
 fi
 
+echo 'Trying to load the kqemu module'
+if modprobe kqemu &> /dev/null ; then
+    echo "kqemu loaded"
+else
+    echo "WARNING : Could not modprobe kqemu"
+fi
+
+echo 'Checking for a loaded kqemu module'
+lsmod | grep kqemu
+echo 'Checking for /dev/kqemu'
+ls -l /dev/kqemu
+
+echo 'Cleaning up pid file'
 rm -f qemu.pid
 
-#Command for running the Qemu Emulator
-ARGS="-boot d  -net nic,macaddr=${MACADDR} -net $TAP, -cdrom ${NODE_ISO} -hda ${HDA} -m ${RAM} -nographic -pidfile qemu.pid"
-echo "Running $QEMU $ARGS < /dev/null"
-exec $QEMU $ARGS < /dev/null
+
+
+# qemu options
+# basics
+ARGS="$ARGS -m ${RAM}"
+ARGS="$ARGS -hda ${DISK_IMAGE}"
+ARGS="$ARGS -nographic"
+ARGS="$ARGS -pidfile qemu.pid"
+# boot from CD
+ARGS="$ARGS -boot d"
+ARGS="$ARGS -cdrom ${NODE_ISO}"
+# set mac address
+ARGS="$ARGS -net nic,macaddr=${MACADDR}"
+# set init script
+ARGS="$ARGS -net tap,script=${SCRIPT}"
+echo "Running $QEMU $ARGS"
+exec $QEMU $ARGS &