On Wed, 19 Jun 2024, Christoph Hellwig wrote: > What happened to the requirement that all protocol extensions added > to Linux need to be standardized in IETF RFCs? > > Is that requirement documented somewhere? Not that I doubt it, but it would be nice to know where it is explicit. I couldn't quickly find anything in Documentation/ Can we get by without the LOCALIO protocol? For NFSv4.1 we could use the server_owner4 returned by EXCHANGE_ID. It is explicitly documented as being usable to determine if two servers are the same. For NFSv4.0 ... I don't think we should encourage that to be used. For NFSv3 it is harder. I'm not as ready to deprecate it as I am for 4.0. There is nothing in NFSv3 or MOUNT or NLM that is comparable to server_owner4. If krb5 was used there would probably be a server identity in there that could be used. I think the server could theoretically return an AUTH_SYS verifier in each RPC reply and that could be used to identify the server. I'm not sure that is a good idea though. Going through the IETF process for something that is entirely private to Linux seems a bit more than should be necessary.. Thanks, NeilBrown
