Mirantis/virtlet

meta-data:
  instance-id: foo.default
  local-hostname: foo
user-data:
  mounts:
  - - opt
    - /opt
    - 9p
    - trans=virtio
  write_files:
  - content: |
      #!/bin/sh
      if ! mountpoint /opt; then mkdir -p /opt && mount -t 9p -o trans=virtio opt /opt; fi
    path: /etc/cloud/mount-volumes.sh
    permissions: "0755"