From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olivier Galibert Subject: Re: [RFC 0/13] extents and 48bit ext3 Date: Sat, 10 Jun 2006 16:07:14 +0200 Message-ID: <20060610140713.GA1475@dspnet.fr.eu.org> References: <1149816055.4066.60.camel@dyn9047017069.beaverton.ibm.com> <20060609091327.GA3679@infradead.org> <20060609030759.48cd17a0.akpm@osdl.org> <44899653.1020007@garzik.org> <87irnab33v.fsf@graviton.dyn.troilus.org> <20060610010651.GA20202@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from dspnet.fr.eu.org ([213.186.44.138]:60178 "EHLO dspnet.fr.eu.org") by vger.kernel.org with ESMTP id S1030358AbWFJOHR (ORCPT ); Sat, 10 Jun 2006 10:07:17 -0400 To: Theodore Tso , Sven-Haegar Koch , Michael Poole , Jeff Garzik , Andrew Morton , Christoph Hellwig , cmm@us.ibm.com, linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Content-Disposition: inline In-Reply-To: <20060610010651.GA20202@thunk.org> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Fri, Jun 09, 2006 at 09:06:51PM -0400, Theodore Tso wrote: > On Sat, Jun 10, 2006 at 02:49:32AM +0200, Sven-Haegar Koch wrote: > > I see a different problem with "ext3 + extends is not ext3 anymore" when > > the feature goes mainstream: > > - user with old distri, no extends in use, no kernel support for them > > - user has some kind of problem > > - uses new rescue disk (aka knoppix at the time of problem) - that then > > is current stuff, and certainly uses extents - fixes problem on disk > > (may be a simple as running lilo/grub from chroot, happens often for me) > > - tries to boot back into his distri -> *boom* he lost > > Incorrect, because unless you explicitly enable the use of extents, > the mere act of using a new kernel such as might be found on knoppix > will not result in the filesystem utilizing the extent feature. And how shall the rescue/live CD know whether to use the feature? OG.