kvm-sfs

#!/bin/sh

KERNEL=$1
SFS=$2
SCRIPT=$3

DIR=.
EXTRA_ARG="ignore_loglevel debug loglevel=8"
NR_CPU=2
MEM=2048
ROOT_FS=$DIR/appliance/root_fs.img
ROOT_DEV=/dev/vda
SERIAL="-serial telnet::8500,server,nowait \
        -serial telnet::8501,server,nowait \
        -serial telnet::8502,server,nowait"

# Prepare sfs folder on a separate hdd
RAW_SFS_FS=$DIR/sfs.raw
SFS_FS=$DIR/sfs.img
SFS_MNT=$DIR/sfs_mnt
mkdir -p $SFS_MNT
echo -n >| $RAW_SFS_FS
fallocate -l 1g $RAW_SFS_FS
mkfs -t ext4 $RAW_SFS_FS
mount -t ext4 -o loop $RAW_SFS_FS $SFS_MNT
rsync \
    --exclude='*.ko' \
    --exclude='*.o' \
    --exclude='*.dwo' \
    --exclude='Module.*' \
    --exclude='modules.*' \
    --exclude='mkfs-simplefs' \
    -r $SFS/* $SFS_MNT/
umount $SFS_MNT
qemu-img convert -f raw -O qcow2 -o compat=0.10 -c $RAW_SFS_FS $SFS_FS
rm -f $RAW_SFS_FS


modprobe kvm-intel

kvm -boot order=c \
    -drive file=$ROOT_FS,if=virtio,snapshot=on \
    -drive file=$SFS_FS,cache=none,if=virtio \
    -s \
    -nographic -smp $NR_CPU -m $MEM \
    -serial mon:stdio \
     $SERIAL \
    --kernel $KERNEL \
    --append "root=$ROOT_DEV console=ttyS0,115200 run=$SCRIPT $EXTRA_ARG"