Hi All, 
    I found that there is rarely topics about supporting dpdk in ovirt 4.2  in Internet except https://blogs.ovirt.org/2018/07/upgraded-dpdk-support-in-ovirt/; and I can't get information such as  whether or not should I install dpdk or ovn manual? And I will get an error when I execute such cmds:
ansible-playbook ovirt.dpdk-setup/tasks/main.yml
ansible-playbook oVirt.dpdk-setup

I have some experience about ovn and dpdk, but I can't make ovirt supporting dpdk according the instruction in https://blogs.ovirt.org/2018/07/upgraded-dpdk-support-in-ovirt/

Is there anybody helping me?  Thank you.