runqemu

#!/bin/bash

USAGE="Usage: `basename $0` [-i IMAGE_FILE] [-s SSH_PORT] [-q QEMU_EXE] BZIMAGE [QEMU_ARG, ...]"

DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
IMGDIR=${DIR}/images
QEMU=qemu-system-x86_64
IMAGE=jessie.qcow2
SSH_PORT=3234
QUIET=quiet
KVM=-enable-kvm
MEM=2048
CORES=1
PMEM=""
IOPMEM=""
DEBUG=
CONNECT=connect
NVME=1
NVME_NOTUPSTREAM="-drive file=${IMGDIR}/nvme.qcow2,if=none,id=nvme1,snapshot=on \
  -device nvme,drive=nvme1,serial=nvme1,namespaces=1,cmbsz=0,cmbloc=0 \
  -drive file=${IMGDIR}/nvme2.qcow2,if=none,id=nvme2,snapshot=on \
  -device nvme,drive=nvme2,serial=nvme2,namespaces=1,cmbsz=8388608,cmbloc=2"
NVME_UPSTREAM="-drive file=${IMGDIR}/nvme.qcow2,if=none,id=nvme1,snapshot=on \
  -device nvme,drive=nvme1,serial=nvme1,cmb_size_mb=64 \
  -drive file=${IMGDIR}/nvme2.qcow2,if=none,id=nvme2,snapshot=on \
  -device nvme,drive=nvme2,serial=nvme2 \
  -drive file=${IMGDIR}/nvme3.qcow2,if=none,id=nvme3,snapshot=on \
  -device nvme,drive=nvme3,serial=nvme3 \
  -drive file=${IMGDIR}/nvme4.qcow2,if=none,id=nvme4,snapshot=on \
  -device nvme,drive=nvme4,serial=nvme4 \
  -drive file=${IMGDIR}/nvme5.qcow2,if=none,id=nvme5,snapshot=on \
  -device nvme,drive=nvme5,serial=nvme5 \
  -drive file=${IMGDIR}/nvme6.qcow2,if=none,id=nvme6,snapshot=on \
  -device nvme,drive=nvme6,serial=nvme6"
VIRTFS="-virtfs local,id=home,path=/home/,security_model=mapped,mount_tag=home"
ETH=1
ETH_NOTUPSTREAM="-device e1000,netdev=user0 -netdev user,id=user0 \
   -device e1000,netdev=socket0 \
   -netdev socket,id=socket0,${CONNECT}=localhost:1235 \
   -redir tcp:$SSH_PORT::22"
ETH_UPSTREAM="-device e1000,netdev=user0 -netdev user,id=user0,hostfwd=tcp::${SSH_PORT}-:22"

UPSTREAM=0

while getopts hq:i:m:s:c:enpkdftuv OPT; do
    case "$OPT" in
        h)
            echo $USAGE
            exit 0
            ;;
        q)
            QEMU=$OPTARG
            ;;
        i)
            IMAGE=$OPTARG
            ;;
        m)
            MEM=$OPTARG
            ;;
        s)
            SSH_PORT=$OPTARG
            ;;
        c)
            CORES=$OPTARG
            ;;
        e)
            ETH=0
            ;;
        n)
            NVME=0
            ;;
        p)
            PMEM=128M!1024M
            IOPMEM="-drive file=${IMGDIR}/iopmem.img,if=none,format=raw,id=iopmem \
                    -device iopmem,drive=iopmem"
	    ;;
        k)
            KVM=
            ;;
        d)
            DEBUG="-s -S"
            ;;
        f)
            VIRTFS=
            ;;
        t)
            CONNECT=listen
            ;;
        u)
            UPSTREAM=1
            ;;
        v)
            QUIET=
            ;;
       \?)
           # getopts issues an error message
           echo $USAGE >&2
           exit 1
           ;;
    esac
done

shift $((OPTIND-1))

KERNEL=$1
shift
if [ ! -z $PMEM ] ; then
   PMEM="memmap=${PMEM}"
fi

  # Accomodate the fact that upstream NVMe has a differnet set of
  # options than the NVMe and LightNVM forks.

if [[ $NVME -ne 0 ]]; then
    if [[ $UPSTREAM -ne 0 ]]; then
	NVME=$NVME_UPSTREAM
    else
	NVME=$NVME_NOTUPSTREAM
    fi
else
    NVME=
fi

  # Accomodate the fact that upstream QEMU has depreciated the -redir
  # option (not yet done as it is just a warning for now). 

if [[ $ETH -ne 0 ]]; then
    if [[ $UPSTREAM -ne 0 ]]; then
	ETH=$ETH_UPSTREAM
    else
	ETH=$ETH_NOTUPSTREAM
    fi
else
    ETH=
fi

  # If the desired image does not exist then create it from the
  # jessie-clean.qcow2 image.

if [ ! -f $IMAGE ] && [[ $IMAGE != */* ]]; then
    IMAGE=$IMGDIR/$IMAGE
    if [ ! -f $IMAGE ]; then
        qemu-img create -f qcow2 -b $IMGDIR/jessie-clean.qcow2 $IMAGE
    fi
fi

${QEMU} $DEBUG $KVM -m $MEM -smp ${CORES},cores=${CORES} \
   $NVME $VIRTFS $IOPMEM $ETH \
   -nographic \
   -serial mon:stdio \
   -kernel $KERNEL \
   -append "nvme.use_cmb=24 root=/dev/sda2 rootfstype=ext4 console=ttyS0,38400n8 $QUIET $PMEM" \
   $IMAGE \
   $*