> > On Tue, 27 Apr 2021 at 23:08, Numan Siddique <num...@ovn.org> wrote:
> > > Having 3 chassis will not result in this split brain scenario which you
> > > have
> > > probably observed.
I dig a little deeper. I guess what I experience is an issue when only having 2
chassis hosting gateways.
ha_chassis_group_is_active reads
if (sset_is_empty(active_tunnels)) {
/* If active tunnel sset is empty, it means it has lost
* connectivity with other chassis. */
return false;
}
I think the code tries to prevent a split brain scenario here: if
there is no tunnel working it necessarily means the current chassis is broken
(although there should be a tunnel working towards a compute).
When there are 2 chassis in the group, when the first chassis goes down, the
only tunnel is down, and the port is never claimed. I can solve that by having
3 chassis in the group or returning true (when a_ch_grp->n_ha_chassis == 2)
above.
I don't think practically anyone would run with only 2 chassis acting as gateway
though!
Thanks
Francois
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