linux-ext4 - Re: [RFCv3 00/12] xfstests: test the btrfs/xfs reflink/dedupe ioctls

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Date:	Sun, 8 Nov 2015 23:59:26 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
Cc:	david@...morbit.com, fstests@...r.kernel.org,
	linux-ext4@...r.kernel.org, Anna.Schumaker@...app.com,
	linux-btrfs@...r.kernel.org, xfs@....sgi.com
Subject: Re: [RFCv3 00/12] xfstests: test the btrfs/xfs reflink/dedupe ioctls

On Tue, Oct 06, 2015 at 10:12:57PM -0700, Darrick J. Wong wrote:
>  * I don't have any interesting NFS/CIFS setups for test. :(

I have a banrch with client and server support for NFSv4.2 CLONE
support:

http://git.infradead.org/users/hch/pnfs.git/shortlog/refs/heads/reflink+clone

For now you want to use btrfs on the server, as using reflinks on XFS
seems to be a little unstable over NFS.

> If you're going to start using this mess, you probably ought to just
> pull from my github trees for kernel[1], xfsprogs[2], and xfstests[3].
> They should just work with the btrfs that's in 4.3.
> 
> Comments and questions are, as always, welcome.

Any reason the groups are called clone?  I don't really have an opinion
on clone vs reflink but given that the xfs_io command is reflink I'd
rather be consistent.

Otherwise I'd say get it merged ASAP, we can still fix up various
details later.
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