On Fri, Nov 15, 2024 at 09:28:05AM -0700, Keith Busch wrote: > SSDs operates that way. FDP just reports more stuff because that's what > people kept asking for. But it doesn't require you fundamentally change > how you acces it. You've singled out FDP to force a sequential write > requirement that that requires unique support from every filesystem > despite the feature not needing that. No I haven't. If you think so you are fundamentally misunderstanding what I'm saying. > We have demonstrated 40% reduction in write amplifcation from doing the > most simplist possible thing that doesn't require any filesystem or > kernel-user ABI changes at all. You might think that's not significant > enough to let people realize those gains without more invasive block > stack changes, but you may not buying NAND in bulk if that's the case. And as iterared multiple times you are doing that by bypassing the file system layer in a forceful way that breaks all abstractions and makes your feature unavailabe for file systems. I've also thrown your a nugget by first explaining and then even writing protype code to show how you get what you want while using the proper abstractions. But instead of a picking up on that you just whine like this. Either spend a little bit of effort to actually get the interface right or just shut up.
