Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757289AbYCNCUz (ORCPT ); Thu, 13 Mar 2008 22:20:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751927AbYCNCUr (ORCPT ); Thu, 13 Mar 2008 22:20:47 -0400 Received: from phunq.net ([64.81.85.152]:44634 "EHLO moonbase.phunq.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752116AbYCNCUq (ORCPT ); Thu, 13 Mar 2008 22:20:46 -0400 From: Daniel Phillips To: Rik van Riel Subject: Re: [ANNOUNCE] Ramback: faster than a speeding bullet Date: Thu, 13 Mar 2008 18:20:20 -0800 User-Agent: KMail/1.9.5 Cc: Willy Tarreau , Chris Friesen , Lars Marowsky-Bree , Alan Cox , Grzegorz Kulewski , linux-kernel@vger.kernel.org References: <200803092346.17556.phillips@phunq.net> <200803120117.57644.phillips@phunq.net> <20080313163431.7b4058ef@cuia.boston.redhat.com> In-Reply-To: <20080313163431.7b4058ef@cuia.boston.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200803131920.21605.phillips@phunq.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1355 Lines: 30 On Thursday 13 March 2008 13:34, Rik van Riel wrote: > On Wed, 12 Mar 2008 00:17:56 -0800 > Daniel Phillips wrote: > > > So we have a flock of people arguing that you can't trust Linux. Well > > maybe there are situations were you can't, but what can you trust? > > Disk firmware? Bios? Big maybes everywhere. > > The traditional and proven method to constructing a reliable system is > to assume that no component can be fully trusted. This is especially > true for new code. > > By being paranoid about everything, failures in one component are > usually contained well enough that one failure is not catastrophic. > > In order for ramback to get appeal with the people who are paranoid > about data integrity (probably a vast majority of users), you will > need some guarantees about flush order, etc... I disagree. Never mind that it already does provide such guarantees, just echo 1 >/proc/driver/ramback/name. But if you want the full performance you need to satisfy your paranoia at a higher level in the traditional way: by running two in parallel or whatever. Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/