From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932139AbWGCWFL (ORCPT ); Mon, 3 Jul 2006 18:05:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932145AbWGCWFL (ORCPT ); Mon, 3 Jul 2006 18:05:11 -0400 Received: from dsl092-017-098.sfo4.dsl.speakeasy.net ([66.92.17.98]:2758 "EHLO baywinds.org") by vger.kernel.org with ESMTP id S932139AbWGCWFK (ORCPT ); Mon, 3 Jul 2006 18:05:10 -0400 Message-ID: <44A99486.6050307@baywinds.org> Date: Mon, 03 Jul 2006 15:04:54 -0700 From: Bruce Ferrell User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040805 Netscape/7.2 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Valdis.Kletnieks@vt.edu CC: Bill Davidsen , linux-kernel@vger.kernel.org Subject: Re: ext4 features References: <20060701163301.GB24570@cip.informatik.uni-erlangen.de> <20060701170729.GB8763@irc.pl> <20060701174716.GC24570@cip.informatik.uni-erlangen.de> <20060701181702.GC8763@irc.pl> <20060703202219.GA9707@aitel.hist.no> <44A98D5A.5030508@tmr.com> <200607032150.k63LoM4H027543@turing-police.cc.vt.edu> In-Reply-To: <200607032150.k63LoM4H027543@turing-police.cc.vt.edu> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Valdis.Kletnieks@vt.edu wrote: > On Mon, 03 Jul 2006 17:34:18 EDT, Bill Davidsen said: > >>I think he is talking about another problem. RAID addresses detectable >>failures at the hardware level. I believe that he wants validation after >>the data is returned (without error) from the device. While in most >>cases if what you wrote and what you read don't match it's memory, >>improving the chances of catching the error is useful, given that >>non-server often lacks ECC on memory, or people buy cheaper non-parity >>memory. > > > There's other issues as well. Why do people run 'tripwire' on boxes that > have RAID on them? Because they're looking for malicous changes