Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752164Ab3I2FeO (ORCPT ); Sun, 29 Sep 2013 01:34:14 -0400 Received: from mail1.vodafone.ie ([213.233.128.43]:40020 "EHLO mail1.vodafone.ie" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751073Ab3I2FeJ (ORCPT ); Sun, 29 Sep 2013 01:34:09 -0400 X-Greylist: delayed 669 seconds by postgrey-1.27 at vger.kernel.org; Sun, 29 Sep 2013 01:34:08 EDT X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApMBAMS4R1JtTFzt/2dsb2JhbAANTYM/wUWBOIMZAQEBBDIBRhALDQsJFg8JAwIBAgFFBg0BBQIBAa9uknaPUQeEIgOeWY5E Message-ID: <5247B928.2070307@draigBrady.com> Date: Sun, 29 Sep 2013 06:22:48 +0100 From: =?ISO-8859-1?Q?P=E1draig_Brady?= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: richard -rw- weinberger CC: Thomas Meyer , Rob Landley , "linux-kernel@vger.kernel.org" Subject: Re: Copy on write hard links? References: <0EF3994A-6BC7-4FC7-AD2D-B4BE087EBFCA@m3y3r.de> <1380117572.1974.81@driftwood> <1380119333.7453.4.camel@localhost.localdomain> In-Reply-To: X-Enigmail-Version: 1.5.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 947 Lines: 28 On 09/25/2013 03:37 PM, richard -rw- weinberger wrote: > On Wed, Sep 25, 2013 at 4:28 PM, Thomas Meyer wrote: >> Am Mittwoch, den 25.09.2013, 08:59 -0500 schrieb Rob Landley: >>> On 09/24/2013 01:36:56 PM, Thomas Meyer wrote: >>>> Hi, >>>> >>>> Is there such a thing? >>> >>> In the kernel's vfs layer? >> >> Yes, that would be a nice feature! > > You mean reflinks? > Currently only OCFS2 and btrfs support them. > Both using a fs specific ioctl(). > IIRC GNU cp uses the btrfs specific one if the --reflink parameter is used. coreutils is waiting for a reflink syscall to materialize rather than adding new per filesystem support http://lwn.net/Articles/335380/ thanks, P?draig. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/