From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1SGxfL-0001s0-Kl for garchives@archives.gentoo.org; Sun, 08 Apr 2012 19:20:48 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id D95BDE0BB4; Sun, 8 Apr 2012 19:20:28 +0000 (UTC) Received: from mail-bk0-f53.google.com (mail-bk0-f53.google.com [209.85.214.53]) by pigeon.gentoo.org (Postfix) with ESMTP id 7108DE0B81 for ; Sun, 8 Apr 2012 19:19:07 +0000 (UTC) Received: by bkwj4 with SMTP id j4so3313509bkw.40 for ; Sun, 08 Apr 2012 12:19:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=hb7ABdMQ2wewV0PKTMUcXMkOClVIIJfC06I+OdQa3Go=; b=a7drvany7x1knxXB0K732XmPYqXzGBLoc3wknja1yh4pET1tVefDuuD4J0kWkm1c4v nDL8pJjO2e4tcn+5fmYOJ+nNe5tvil1nPEL2EaEemFXDbiSpy+i9tJ94CRMvmTtqGw7d bqIgu9uAZDtbNLDgR//iaoYtQaoJWo8hbegQnEsUe3DdTRAlqbiWmpd2uJCBAo0JVKJY v7iihPfeoZhG/mH/sTqf4qniinbmvRGy/nVaB8NePZFKDu4OGLBnj23jbFtkfdRpeErv P9E4TolgGh7UX3Da7V1L6Frm8la3r6uPiPz31cDU2mCYc/vyjQFO8YC+NYVO1rNjw4Mk YfPg== Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.204.153.203 with SMTP id l11mr2165330bkw.31.1333912746518; Sun, 08 Apr 2012 12:19:06 -0700 (PDT) Received: by 10.204.164.76 with HTTP; Sun, 8 Apr 2012 12:19:06 -0700 (PDT) In-Reply-To: References: <20120408152603.GC3025@solfire> <20120408165623.5fd4fcc6@karnak.local> <201204081734.11781.michaelkintzios@gmail.com> <20120408164430.GD3025@solfire> Date: Sun, 8 Apr 2012 15:19:06 -0400 Message-ID: Subject: Re: [gentoo-user] Extended file attributes: ext4 From: Michael Mol To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Archives-Salt: 8821fd4f-addc-41ec-8b19-caced81d154c X-Archives-Hash: acfc9f28c112761a8f14b768fcf24801 On Sun, Apr 8, 2012 at 3:04 PM, Canek Pel=C3=A1ez Vald=C3=A9s wrote: > On Sun, Apr 8, 2012 at 1:59 PM, Michael Mol wrote: >> On Sun, Apr 8, 2012 at 2:51 PM, Canek Pel=C3=A1ez Vald=C3=A9s wrote: >>> On Sun, Apr 8, 2012 at 1:41 PM, Michael Mol wrote: >>>> On Sun, Apr 8, 2012 at 2:21 PM, Canek Pel=C3=A1ez Vald=C3=A9s wrote: >>>>> On Sun, Apr 8, 2012 at 11:44 AM, =C2=A0 wrote: >>>>>> Mick [12-04-08 18:40]: >> >> [snip] >> >>>>>> Status quo: System with ext4 and no extended attributes. >>>>>> Where I want to be: The same system with extended attributes. >>>>>> >>>>>> Way to go: No reformatting and mkfs and all that things. Only kernel >>>>>> reconfiguring / recompiling / rebooting and emerging some tools. >>>>>> >>>>>> Possible? >>>>> >>>>> As others had said, this is possible. I used this guide: >>>>> >>>>> http://www.debian-administration.org/articles/643 >>>>> >>>>> You need basically to enable the ext4-only features: >>>>> >>>>> tune2fs -O extents,uninit_bg,dir_index >>>> >>>> Um, why? Ext3 had extended attribute support, and ISTR the ext4 code >>>> being able to handle ext3 filesystems. >>> >>> Didn't we already had this discussion? You can mount an ext3 partition >>> as ext4, and it will be treated as ext4, but it will keep bein fully >>> backwards compatible with ext3 (i.e., you can still mount it as ext3). >>> This, however, negates the purpose of using ext4, as you are not using >>> extents: >> >> Sure, ext4 is a better filesystem than ext3. I'm not disputing that. >> I'm disputing that. I'm disputing two things: >> >> 1) That you need to convert a filesystem to ext4 in order to use >> extended attributes. >> 2) That you need to convert the filesystem at all; Meino's 'status >> quo' filesystem is already ext4, per the portion of his email I >> quoted. > > From Mick's mail: > >> Status quo: System with ext4 and no extended attributes. >> Where I want to be: The same system with extended attributes. > > I assume with that he meant the "extents" option. Therefore, all the > things I already said. Ah. 'extents' and 'extended attributes' are completely different things. I did a bit of googling to confirm my recollection. FWIW, I came across this very excellent page in discussion of Ext4 compared to other and previous filesystems: http://kernelnewbies.org/Ext4 --=20 :wq