Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751314AbWCCWDb (ORCPT ); Fri, 3 Mar 2006 17:03:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751440AbWCCWDb (ORCPT ); Fri, 3 Mar 2006 17:03:31 -0500 Received: from sccrmhc12.comcast.net ([63.240.77.82]:1750 "EHLO sccrmhc12.comcast.net") by vger.kernel.org with ESMTP id S1751314AbWCCWDa (ORCPT ); Fri, 3 Mar 2006 17:03:30 -0500 Subject: Re: SEEK_HOLE and SEEK_DATA support? From: Nicholas Miell To: Phillip Susi Cc: Jim Dennis , linux-kernel@vger.kernel.org In-Reply-To: <44088360.2030705@cfl.rr.com> References: <20060303170417.GA26909@starshine.org> <44088360.2030705@cfl.rr.com> Content-Type: text/plain Date: Fri, 03 Mar 2006 14:03:28 -0800 Message-Id: <1141423408.2996.9.camel@entropy> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4.njm.1) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 601 Lines: 18 On Fri, 2006-03-03 at 12:56 -0500, Phillip Susi wrote: > Aren't there already apis to query for the holes in the file, Yes, but they are filesystem-specific. (I think only XFS has them at this point.) > and doesn't tar already use them to efficiently back up sparse files? No (at least, not in GNU tar 1.15.1). -- Nicholas Miell - 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/