On Fri, Aug 28, 2026 at 12:39:56PM -0500, John Groves wrote: > On 26/08/24 09:41AM, Miklos Szeredi wrote: > > On Sat, 22 Aug 2026 at 23:55, John Groves <[email protected]> wrote: > > > > > Famfs does work in fuse, but some of the asks are things that I don't see > > > how I can agree to. I think Miklos and I should discuss those 1:1, to > > > figure > > > out if there is a way forward. > > > > > > I think the virtual backing-dev thing is a non-starter, > > > > The virtual backing-dev is an abstraction. > > > > Is it sufficient for you if I promise that this is going to do the > > same thing as the standalone famfs at the same performance level? > > > > > and I think that the famfs > > > portion of the fuse ABI basically can't live without extents that are > > > (daxdev, offset, length). > > > > Sigh. My proposal was (backing-id, offset, length). Again this is an > > abstraction. A backing ID can be a daxdev, a striped logical device > > or it can be a block dev or even a plain file. > > > > > Also, I'm curious: if you don't know of a use case for the striping code > > > outside > > > of famfs, why ask famfs to completely rewrite that? (and I agree, other > > > than the eventual remote possibility of competing 'famfs-ng' fuse servers, > > > I don't see much likelihood that this piece will be shared.) > > > > Because the striping feature fits much better into a virtual device > > API than the extent mapping API. This is how striping has worked in > > linux for the last 30 years. > > > > > Miklos, I trust that you are a good faith actor, although you seem to be > > > spread pretty thin. Can you commit to a series of 1:1 conversations with > > > me to try to work through the disconnects? > > > > Fine, let's find a time. > > > > Thanks, > > Miklos > > Miklos and I met yesterday and I think we found workable path forward. > We will be collaborating on some changes to the famfs metadata transport, > likely mostly via me trying to make it easy for Miklos to bring up a > famfs testbed VM, and Miklos doing some re-work on famfs to make it > more consonant with fuse (fuse-onic? ;).
Excellent news and thanks for your patience and working with Miklos on this.
