Run a vm kata style but with a full kernel.

qemu-run.sh

#!/bin/bash
# qemu-run - A Podman-like interface for QEMU
#
# podman run --rm \
#    --runtime=kata \
#    -v "$PWD:/mnt/host:Z" \
#    alpine sh -c \
#    'ls -la /mnt/host > /mnt/host/ls.txt'
#
# ./qemu-run alpine -v "$PWD:/mnt/host" 'ls -la /mnt/host > /mnt/host/ls.txt'


# Parse arguments
IMAGE="$1"
shift
VOLUME=""
CMD=""

while [ $# -gt 0 ]; do
  case "$1" in
    -v|--volume)
      VOLUME="$2"
      shift 2
      ;;
    *)
      CMD="$1"
      shift
      break
      ;;
  esac
done

# Parse volume mapping
HOST_PATH=$(echo "$VOLUME" | cut -d: -f1)
GUEST_PATH=$(echo "$VOLUME" | cut -d: -f2 | cut -d: -f1)

# Create cloud-init config
cat > user-data <<EOF
#cloud-config
runcmd:
  - mkdir -p $GUEST_PATH
  - mount -t 9p -o trans=virtio hostdir $GUEST_PATH
  - $CMD
  - sync
  - poweroff
EOF

# Create cloud-init ISO
cloud-localds seed.iso user-data

# Run VM
qemu-system-x86_64 \
  -m 512 \
  -nographic \
  -drive file=$IMAGE.qcow2,if=virtio \
  -drive file=seed.iso,if=virtio \
  -virtfs local,path="$HOST_PATH",mount_tag=hostdir,security_model=mapped,id=hostshare