[ovs-discuss] OVN: availability zones concept

[Lucas Alvares Gomes]

Hi,

Thanks all! I will start working on it pretty soon then.

> Lucas, I support you moving forward with 1), because:
> a) it is more simple and straightforward, yet the configuration on
> chassis won't (shouldn't) create compatibility issue
> b) it doesn't conflict with further optimization with 2) or 3) on top
> of it when needed in the future
>

That's very true. This work is about creating a logical separation for
Chassis and 2) and 3) is mostly about how the tunnels are formed.

> P.S. Just a comment on the troubleshooting concerns. It seems to me 2)
> doesn't necessarily increase difficulty of trouble-shooting: if lport
> A and lport B cannot communicate, the first step to check should
> always be making sure the logical datapath allows them to talk,
> regardless of the approaches, and if the answer is yes, you know the
> tunnel is expected between the chassises. For monitoring, tunnels do
> not have states unless BFD is enabled (for GW HA), so maybe checking
> on BFD failure status itself is sufficient.
>

Good points!

Cheers,
Lucas