From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Al Boldi" Subject: RE: XFS corruption during power-blackout Date: Wed, 6 Jul 2005 07:24:03 +0300 Message-ID: <200507060424.HAA27591@raad.intranet> References: <20050705181057.GA16422@kevlar.burdell.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: "'Jens Axboe'" , "'David Masover'" , "'Chris Wedgwood'" , "'Nathan Scott'" , , , , Return-path: Received: from [213.184.187.7] ([213.184.187.7]:44292 "EHLO raad.intranet") by vger.kernel.org with ESMTP id S261730AbVGFEZ1 (ORCPT ); Wed, 6 Jul 2005 00:25:27 -0400 To: "'Sonny Rao'" In-Reply-To: <20050705181057.GA16422@kevlar.burdell.org> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Sonny Rao wrote: { > > > >On Wed, Jun 29, 2005 at 07:53:09AM +0300, Al Boldi wrote: > > > >>What I found were 4 things in the dest dir: > > > >>1. Missing Dirs,Files. That's OK. > > > >>2. Files of size 0. That's acceptable. > > > >>3. Corrupted Files. That's unacceptable. > > > >>4. Corrupted Files with original fingerprint. That's ABSOLUTELY > > > >>unacceptable. > > > > > > 2. Moral of the story is: What's ext3 doing the others aren't? > > Ext3 has stronger guaranties than basic filesystem consistency. > I.e. in ordered mode, file data is always written before metadata, so > the worst that could happen is a growing file's new data is written > but the metadata isn't updated before a power failure... so the new > writes wouldn't be seen afterwards. > I believe in newer 2.6 kernels that Reiser has ordered mode (IIRC, courtesy of Chris Mason), but XFS and JFS do not support it. } Was ordered mode disabled/removed when XFS was add to the vanilla-kernel?