startVM

#!/bin/bash

CONFIG=config.vm
TEST=false
QEMUCTL=
EMUOPTS=

function usage() {
    echo "$1 <config.vm> [options] [-- emulator options]"
    echo "options:"
    echo "  -t                Test only.  Print command and exit."
    echo "  -h | --help       Print this help screen and exit."
    echo "  -c                Enable qemuctl GUI."
    echo "  --                Options after -- will be passed to the emulator"
}


while [ "$1" != "" ]; do
    case "$1" in
        -t) TEST=true ;;
        -h|--help)
            usage $0
            exit 0
            ;;
        -c) QEMUCTL="qemuctl -qemu" ;;
        --)
            while [ "$2" != "" ]; do
                EMUOPTS+=" $2"
                shift
            done
            ;;
        *)
            if [ "$CONFIG" == "" ]; then
                CONFIG="$1"
            else
                echo "Invalid options '$1'"
                exit 1
            fi
            ;;
    esac
    shift
done


if [ ! -e "$CONFIG" ]; then
    echo "Config file '$CONFIG' not found"
    exit 1
fi

# Defaults
EMU=kvm
MEM=2000
IMAGE=disk.qcow2
IF=vmtap
MAC=
NET_MODEL=virtio
SOUND= #"-soundhw all"
DISK_OPTS="cache=none,if=virtio"
VIDEO=
MOUSE="-device usb-tablet"
KEYBOARD=
MISC="-usb -rtc base=localtime -monitor stdio"
KEYMAP="-k en-us"
DSP=
NICE="nice -n 5"
EXTRA=

. "$CONFIG"


# Check configuration
if [ "$ID" == "" ]; then
    "ID not set in '$CONFIG'"
    exit 1
fi

if [ "$VIDEO" == "" ]; then
    VIDEO="-vga qxl -spice port=$((5930 + $ID)),disable-ticketing \
      -device virtio-serial-pci \
      -device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0 \
      -chardev spicevmc,id=spicechannel0,name=vdagent"
fi

if [ "$MAC" == "" ]; then
    MAC="02:00:00:00:00:$ID"
fi

VDE="-net vde,sock=/var/run/vde2/${IF}.ctl"
NIC="-net nic"
if [ "$MAC" != "" ]; then
    NIC+=",macaddr=$MAC"
fi

if [ "$NET_MODEL" != "" ]; then
    NIC+=",model=$NET_MODEL"
fi

if [ "$IMAGE" != "" ]; then
    if [ ! -e "$IMAGE" ]; then
        echo "Cannot find image '$IMAGE'"
        exit 1
    fi

    DISK="-drive file=$IMAGE"
    if [ "$DISK_OPTS" != "" ]; then
        DISK+=",$DISK_OPTS"
    fi
fi


# Build command
INPUT="$KEYBOARD $MOUSE"
NET="$NIC $VDE"
OPTS="-m $MEM $SOUND $NET $DISK $VIDEO $INPUT $MISC $KEYMAP $EXTRA"

CMD="$NICE $DSP $QEMUCTL $EMU $OPTS $EMUOPTS"

# Unlimit memory
ulimit -v unlimited

# Run it
echo "Starting VM: $CMD"
if $TEST; then
    echo "Just a test"
else
    eval $CMD
fi