Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 26 Nov 2001 19:19:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 26 Nov 2001 19:18:51 -0500 Received: from astound-64-85-224-253.ca.astound.net ([64.85.224.253]:4870 "EHLO master.linux-ide.org") by vger.kernel.org with ESMTP id ; Mon, 26 Nov 2001 19:18:32 -0500 Date: Mon, 26 Nov 2001 16:16:12 -0800 (PST) From: Andre Hedrick To: Andreas Dilger cc: Martin Eriksson , Steve Brueggeman , linux-kernel@vger.kernel.org Subject: Re: Journaling pointless with today's hard disks? In-Reply-To: <20011126170631.O730@lynx.no> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 26 Nov 2001, Andreas Dilger wrote: > On Nov 27, 2001 00:49 +0100, Martin Eriksson wrote: > > I sure think the drives could afford the teeny-weeny cost of a power failure > > detection unit, that when a power loss/sway is detected, halts all > > operations to the platters except for the writing of the current sector. > > What happens if you have a slightly bad power supply? Does it immediately > go read only all the time? It would definitely need to be able to > recover operations as soon as the power was "normal" again, even if this > caused basically "sync" I/O to the disk. Maybe it would be able to > report this to the user via SMART, I don't know. ATA/SCSI SMART is already DONE! To bad most people have not noticed. Regards, Andre Hedrick CEO/President, LAD Storage Consulting Group Linux ATA Development Linux Disk Certification Project - 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/