Re: [RFC proxmox{,-backup} 0/2] fix #7198: count veth uplink for PBS running in an LXC

["Fabian Grünbichler" <f.gruenbichler@proxmox.com>]

On July 8, 2026 10:11 am, Jakob Klocker wrote:
> On 7/7/26 2:15 PM, Gabriel Goller wrote:
>> This seems a bit like a band-aid fix to me. Why do we not just get the uplink
>> interface via the default route: e.g. `ip -j route get 1.1.1.1 | jq .[0].dev`?
>> 
> 
> As Fabian mentioned, this wouldn't cover multiple interfaces. If one
> separates backup traffic onto a dedicated interface, that traffic
> wouldn't get picked up.
> 
> IMO the `veth` check is the right call here, at least I haven't found
> a better way. I'm open for suggestions though.

I think the only other (more flexible) solution would be to have a file
listing the interfaces that should be counted..

> What I'm still concerned about is whether it is necessary to handle
> enslaved veth, since they would get picked up. I can't think of a real
> use case where one would want to create such a setup in an LXC, but
> since I'm not that experienced in that topic I'm happy for input!
> 
> Since running a PBS in an LXC is already not that common, paired with
> renaming the interface to a not "normal" name, I would argue that
> handling the enslaved veth is not really necessary.