From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21C35C433DF for ; Wed, 20 May 2020 13:25:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E41D52070A for ; Wed, 20 May 2020 13:25:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726486AbgETNZn (ORCPT ); Wed, 20 May 2020 09:25:43 -0400 Received: from mail1.g1.pair.com ([66.39.3.162]:27337 "EHLO mail1.g1.pair.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726436AbgETNZn (ORCPT ); Wed, 20 May 2020 09:25:43 -0400 X-Greylist: delayed 598 seconds by postgrey-1.27 at vger.kernel.org; Wed, 20 May 2020 09:25:42 EDT Received: from mail1.g1.pair.com (localhost [127.0.0.1]) by mail1.g1.pair.com (Postfix) with ESMTP id DDC5B5474F2; Wed, 20 May 2020 09:15:43 -0400 (EDT) Received: from harpe.intellique.com (labo.djinux.com [82.225.196.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail1.g1.pair.com (Postfix) with ESMTPSA id 3DDD460AF66; Wed, 20 May 2020 09:15:43 -0400 (EDT) Date: Wed, 20 May 2020 15:15:10 +0200 From: Emmanuel Florac To: Dave Chinner Cc: "Darrick J. Wong" , linux-xfs@vger.kernel.org Subject: Re: [XFS SUMMIT] Deprecating V4 on-disk format Message-ID: <20200520151510.11837539@harpe.intellique.com> In-Reply-To: <20200520011430.GS2040@dread.disaster.area> References: <20200513023618.GA2040@dread.disaster.area> <20200519062338.GH17627@magnolia> <20200520011430.GS2040@dread.disaster.area> Organization: Intellique X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.31; x86_64-slackware-linux-gnu) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/YlkVLxS1SmA8SbScWsco5Zy"; protocol="application/pgp-signature" Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org --Sig_/YlkVLxS1SmA8SbScWsco5Zy Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Le Wed, 20 May 2020 11:14:30 +1000 Dave Chinner =C3=A9crivait: > Well, there's a difference between what a distro that heavily > patches the upstream kernel is willing to support and what upstream > supports. And, realistically, v4 is going to be around for at least > one more major distro release, which means the distro support time > window is still going to be in the order of 15 years. IIRC, RedHat/CentOS v.7.x shipped with a v5-capable mkfs.xfs, but defaulted to v4. That means that unless you were extremely cautious (like I am :) 99% of RH/COs v7 will be running v4 volumes for the coming years. How many years, would you ask? As for the lifecycle of a filesystem, I just ended support on a 40 TB archival server I set up back in 2007. I still have a number of supported systems from the years 2008-2010, and about a hundred from 2010-2013. That's how reliable XFS is, unfortunately :) --=20 ------------------------------------------------------------------------ Emmanuel Florac | Direction technique | Intellique | | +33 1 78 94 84 02 ------------------------------------------------------------------------ --Sig_/YlkVLxS1SmA8SbScWsco5Zy Content-Type: application/pgp-signature Content-Description: Signature digitale OpenPGP -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAl7FLYEACgkQX3jQXNUicVaBbQCfSyaq1x3lkUeFY1HmzHWBUT/R O5oAoMMW46Fx2uMKrEjX8E3/5XuqD22e =Wm9K -----END PGP SIGNATURE----- --Sig_/YlkVLxS1SmA8SbScWsco5Zy--