Re: [Lsf-pc] [LFS/MM TOPIC] fs reflink issues, fs online scrub/check, etc

[Dave Chinner <david@fromorbit.com>]

On Tue, Jan 21, 2020 at 04:47:27PM -0800, Dan Williams wrote:
> On Tue, Jan 21, 2020 at 2:02 PM Matthew Wilcox <willy@infradead.org> wrote:
> >
> > On Tue, Jan 21, 2020 at 08:18:40AM -0800, Darrick J. Wong wrote:
> > > On Tue, Jan 21, 2020 at 09:35:22AM +0200, Amir Goldstein wrote:
> > > > On Tue, Jan 21, 2020 at 3:19 AM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> > > > >
> > > > > Didn't see the original mail, so reply here.
> > > >
> > > > Heh! Original email was from 2016, but most of Darrick's wish list is
> > > > still relevant in 2020 :)
> > >
> > > Grumble grumble stable behavior of clonerange/deduperange ioctls across
> > > filesystems grumble grumble.
> > >
> > > > I for one would be very interested in getting an update on the
> > > > progress of pagecache
> > > > page sharing if there is anyone working on it.
> > >
> > > Me too.  I guess it's the 21st, I should really send in a proposal for
> > > *this year's* LSFMMBPFLOLBBQ.
> >
> > I still have Strong Opinions on how pagecache page sharing should be done
> > ... and half a dozen more important projects ahead of it in my queue.
> > So I have no update on this.
> 
> We should plan to huddle on this especially if I don't get an RFC for
> dax-reflink support out before the summit.

It would be a good idea to share your ideas about how you plan to
solve this problem earlier rather than later so you don't waste time
going down a path that is incompatible with what the filesystems
need to/want to/can do.

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com