bootstrap-vz/bootstrapvz/providers/kvm/tasks/virtio.py

from bootstrapvz.base import Task
from bootstrapvz.common import phases
import os


class VirtIO(Task):
    description = 'Install virtio modules'
    phase = phases.system_modification

    @classmethod
    def run(cls, info):
        modules = os.path.join(info.root, '/etc/initramfs-tools/modules')
        with open(modules, "a") as modules_file:
            modules_file.write("\n")
            for module in info.manifest.provider.get('virtio', []):
                modules_file.write(module + "\n")