From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751859AbdKYW5s (ORCPT ); Sat, 25 Nov 2017 17:57:48 -0500 Received: from ipmail06.adl6.internode.on.net ([150.101.137.145]:39571 "EHLO ipmail06.adl6.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751415AbdKYW5q (ORCPT ); Sat, 25 Nov 2017 17:57:46 -0500 Date: Sun, 26 Nov 2017 09:57:42 +1100 From: Dave Chinner To: Reindl Harald Cc: Andreas Dilger , Andi Kleen , "Theodore Ts'o" , Tahsin Erdogan , Linux Kernel Mailing List , linux-fsdevel , linux-ext4 Subject: Re: regression: 4.13 cannot follow symlinks on some ext3 fs Message-ID: <20171125225742.GN4094@dastard> References: <20171123203330.GN2482@two.firstfloor.org> <20171123222317.bq2v26zm5i2jspui@thunk.org> <20171123233101.GP2482@two.firstfloor.org> <700971AC-BDE2-4993-BD56-7497AD8A0FC4@dilger.ca> <20171124020435.GQ2482@two.firstfloor.org> <20171124165102.GS2482@two.firstfloor.org> <706E8F37-95C7-4321-AACA-2ED11F82E625@dilger.ca> <20171125223202.GL4094@dastard> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Nov 25, 2017 at 11:45:07PM +0100, Reindl Harald wrote: > > Am 25.11.2017 um 23:32 schrieb Dave Chinner: > >On Fri, Nov 24, 2017 at 03:03:37PM -0700, Andreas Dilger wrote: > >>Any worse an idea than running a new kernel on an old system? > >>Newer e2fsck fixes a lot of bugs that are present in older > >>e2fsck as well... > > > >I'm running with everything up to date (debian unstable) on these > >VMs, they are just an old filesystem because some distros have had > >reliable rolling updates for the entire life of these VMs. :P > > but why not update the FS to ext4? Unlike ext3, ext4 is not a filesystem that takes kindly to being abused by an environment that involves machines being crashed, oopsed and forcibly rebooted without warning tens of times a day. Every ext4 root filesytsem I've tried on these VMs has lasted less than two weeks before being unrecoverably corrupted and needing to be rebuilt from scratch. Last time I tried a couple of years ago, the ext4 filesystems lasted less than a day because corrupting itself in a way that it couldn't mount but e2fsck didn't detect anything wrong and so it couldn't be repaired. ext4 is just not robust enough for my use case. And, FWIW, I don't use XFS for these root filesystems because the reason I'm doing this to machines is that I'm trashing throwaway XFS filesystems with broken XFS code on other devices on the VM... Cheers, Dave. -- Dave Chinner david@fromorbit.com