Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755998Ab3IYOhZ (ORCPT ); Wed, 25 Sep 2013 10:37:25 -0400 Received: from mail-vb0-f50.google.com ([209.85.212.50]:41589 "EHLO mail-vb0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755464Ab3IYOhY (ORCPT ); Wed, 25 Sep 2013 10:37:24 -0400 MIME-Version: 1.0 In-Reply-To: <1380119333.7453.4.camel@localhost.localdomain> References: <0EF3994A-6BC7-4FC7-AD2D-B4BE087EBFCA@m3y3r.de> <1380117572.1974.81@driftwood> <1380119333.7453.4.camel@localhost.localdomain> Date: Wed, 25 Sep 2013 16:37:23 +0200 Message-ID: Subject: Re: Copy on write hard links? From: richard -rw- weinberger To: Thomas Meyer Cc: Rob Landley , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 742 Lines: 24 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. -- Thanks, //richard -- 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/