[PATCH rfc 0/6] support traddr as dns names for ip based transports

[Daniel Wagner]

On Thu, Aug 10, 2023 at 03:03:46PM +0300, Sagi Grimberg wrote:
> 
> > Currently nvme-cli is able to resolve an ip address from a dns name if
> > traddr argument was given as a dns name, so it does that and passes down
> > to the kernel the resolved ip address.
> > 
> > However, if the dns resolution changes over time, the kernel will not
> > be able to reconnect because it has a stale ip address. While this is
> > not a real use case for nvme subsystems, it could be a valid use-case
> > for discovery controllers, where the resolution is made from a dns
> > name that may load-balance/failover over multiple endpoints.
> > 
> > The last patch (7/6) is for libnvme to pass down the traddr as a dns
> > name if the kernel supports dns queries.
> > 
> > The inspiration was taken from the nfs client that does this for
> > redirects or locations discovery.
> > 
> > It is an rfc, so feedback is welcome.
> 
> So I get that there is zero appetite to support this?

Sorry, just too many things at the same time.

I think it makes totaly sense to move the resolve step down into the
kernel. So I am all good with this.