[ovirt-users] Nested oVirt : Unofficial network recommendations wanted

Edward Haas ehaas at redhat.com
Thu Sep 15 21:27:52 UTC 2016

On Thu, Sep 15, 2016 at 3:43 PM, Nicolas Ecarnot <nicolas at ecarnot.net>

> Hello,
> I'm trying to setup a nested oVirt for the first time, and according to
> what I read around and experience, some special network settings have to be
> chosen.
> For this first try, the bare-metal host is a Debian, running KVM, and the
> virtual NICs are setup as macvtap in VEPA mode.

On what device you attached it? Bridge? the physical nic?

> I'm not up to date with macvtap, but I think I understood that one of its
> limit was that no packet could be exchanged between the host and the
> guests. So far, this is leading me to access my own local VMs from another
> host. Too bad.

I'm also witnessing frequent loss of packets.
> So far, I'm also seeing that guests can not ping each others, so I'm not
> going further before having solved these basic issues.

By definition: http://virt.kernelnewbies.org/MacVTap


I'm remembering the good old times of lots of bridges where my VMs could be
> reached by anyone (this was desired), but virt manager is not offering me
> this choice. I also would like to avoid NAT for other reasons.
> To you all (4) people who are playing with nested oVirt :
> - which is your preferred bare metal OS?
> - which is your preferred guest (first virt level) OS?
> - which network setups and modes are working best?
> Thank you.
> --
> Nicolas ECARNOT
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