Re: Btrfs progs release 6.1

[David Sterba <dsterba@suse.cz>]

On Sat, Dec 24, 2022 at 11:20:20AM +0100, waxhead wrote:
> I have nagged about this before, but here goes again.
> Can we as users get some kind of deduplicaiton support for btrfs-progs?
> 
> As a conservative Debian user I tend to stick with what is in the 
> package repos, and I also believe that most people will feel more 
> comfortable with a "official" implementation rather than some random 
> program for this kind of stuff.
> 
> something as "simple" as "btrfs filesystem deduplicate -R /mnt" would be 
> wonderful.

Yes, this is planned, it would be convenient to quickly deduplicate a
few files or let it work on a directory. This would probably copy what
duperemove does and most likely also steal the implementation as it's in
C.

I'm not sure if btrfs command should provide exactly the same set of
features and options and duplicate the project, I think dupremove is not
currently maintained. I don't want to reimplement everything from
scratch so some level of sharing will make things easier, either direct
copy or as git submodule. It'll start as an experimental command.