Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 23 Mar 2003 08:59:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 23 Mar 2003 08:59:27 -0500 Received: from pc2-cwma1-4-cust86.swan.cable.ntl.com ([213.105.254.86]:9634 "EHLO irongate.swansea.linux.org.uk") by vger.kernel.org with ESMTP id ; Sun, 23 Mar 2003 08:59:27 -0500 Subject: Re: IDE todo list From: Alan Cox To: Jens Axboe Cc: Linux Kernel Mailing List In-Reply-To: <20030323104916.GI837@suse.de> References: <1048352492.9219.4.camel@irongate.swansea.linux.org.uk> <20030323104916.GI837@suse.de> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1048432981.10727.14.camel@irongate.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5) Date: 23 Mar 2003 15:23:01 +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 928 Lines: 22 On Sun, 2003-03-23 at 10:49, Jens Axboe wrote: > On Sat, Mar 22 2003, Alan Cox wrote: > > - Finish verifying 256 sector I/O or larger on LBA48 > > [How to handle change dynamically on hotplug ?] > > That is basically impossible. How are you going to handle the case where > you have a queue full of 256 request writes, and the plugged in disk > chokes on them? And insolvable unless you start setting aside requests > simply for this purpose. Also breaks the pseudo atomic segments that a > single request represents. This is just way beyond ugly... I don't think its impossible at all. Remember if you hotplug a drive you *dont* want the pending I/O to hit the new drive! Alan - 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/