From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hubert Kario <hka@qbs.com.pl>
Subject: Re: cross-subvolume cp --reflink
Date: Sun, 29 Apr 2012 01:53:54 +0200
Message-ID: <2272893.XFoXOC5Zif@bursa22>
References: <20120401152749.61790@gmx.net> <CALJXSJpjOX3t6Xa=gFF2p13eSb+SJfRc_pc0d5ScShnK-5BwkQ@mail.gmail.com>
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Cc: linux-btrfs <linux-btrfs@vger.kernel.org>,
	Norbert Scheibner <scno@gmx.net>
To: =?ISO-8859-1?Q?J=E9r=F4me?= Poulin <jeromepoulin@gmail.com>
Return-path: <linux-btrfs-owner@vger.kernel.org>
In-Reply-To: <CALJXSJpjOX3t6Xa=gFF2p13eSb+SJfRc_pc0d5ScShnK-5BwkQ@mail.gmail.com>
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On Sunday 01 of April 2012 11:42:23 J=E9r=F4me Poulin wrote:
> On Sun, Apr 1, 2012 at 11:27 AM, Norbert Scheibner <scno@gmx.net> wro=
te:
> > Some users tested this patch successfully for week,s or months in 2=
 or 3
> > kernel versions since then, true?
> If this feature must be implented in VFS in another patch, why not
> just activate what works and make the future patch disable it again?

Why would (should) it be impleemented in VFS? reflink copy is completel=
y=20
different from normal copy and hard link.

Subvolumes in btrfs are barriers *only* in btrfs and not visible in VFS=
.

IMHO it's strictly btrfs business and not supporting reflink copy betwe=
en=20
arbitrary directories is a bug.

Regards,
--=20
Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawer=F3w 30/85
tel. +48 (22) 646-61-51, 646-74-24
www.qbs.com.pl
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