From: Amir Goldstein Subject: Re: [LSF/MM TOPIC] Drop ext2/ext3 codebase? When? Date: Thu, 3 Feb 2011 23:57:25 +0200 Message-ID: References: <20110203144011.GA28409@quack.suse.cz> <4D4AC4E2.701@redhat.com> <4D4B06AF.6000106@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Michael Rubin , Jan Kara , lsf-pc@lists.linuxfoundation.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, Andrew Morton To: Eric Sandeen Return-path: Received: from mail-qw0-f46.google.com ([209.85.216.46]:36309 "EHLO mail-qw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751561Ab1BCV5a convert rfc822-to-8bit (ORCPT ); Thu, 3 Feb 2011 16:57:30 -0500 In-Reply-To: <4D4B06AF.6000106@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Thu, Feb 3, 2011 at 9:49 PM, Eric Sandeen wrote= : > > On 2/3/11 1:32 PM, Michael Rubin wrote: > > On Thu, Feb 3, 2011 at 7:08 AM, Eric Sandeen w= rote: > >> If we can have a real plan for moving in this direction though, I'= d > >> support it. =A0I'm just not sure how we get enough real testing un= der > >> our belts to be comfortable with dropping ext[23], especially as > >> most distros now default to ext4 anyway. > > > > Eric what sort of testing are you looking for? > > Anything, the more formal or more widespread the better. > > I just don't think it's used much this way today... > > We can start with xfstests etc but I'd be more concerned about > unexpected behavioral or performance changes. > > > I admit I like having ext2 around for comparisons in bug situations= =2E > > It really helps to isolate the problem area. How painful is the > > upkeep? > > since ext4 was merged, about 450 commits to ext2 & ext3 files. > > since 2.6.32, about 150 commits. > Can you give a rough estimate of how those commits diverge between bugfixes, kernel API changes, code cleanups? Next3 has been following ext3 since 2.6.31 and I remember changes of the 2 latter, but not many major bugfixes. I hardly think we can get away with throwing out ext3 code base, but maybe it can go into bugfixes-only mode? that is unless Jan likes to apply cleanups ;-) Amir. > Translating that into pain units, I dunno. =A0In distro-land, I often > have bugfixes that need to hit 2 or 3 of the filesystems as well. > > -Eric > > > mrubin > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-ext= 4" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at =A0http://vger.kernel.org/majordomo-info.htm= l > > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html