Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030211AbWCXNuh (ORCPT ); Fri, 24 Mar 2006 08:50:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932626AbWCXNug (ORCPT ); Fri, 24 Mar 2006 08:50:36 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:1256 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S932585AbWCXNuf (ORCPT ); Fri, 24 Mar 2006 08:50:35 -0500 Message-ID: <4423F91F.4060007@garzik.org> Date: Fri, 24 Mar 2006 08:50:23 -0500 From: Jeff Garzik User-Agent: Thunderbird 1.5 (X11/20060313) MIME-Version: 1.0 To: Arjan van de Ven CC: Alan Cox , Ian Pratt , Anthony Liguori , Chris Wright , virtualization@lists.osdl.org, xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org, Ian Pratt , ian.pratt@cl.cam.ac.uk, SCSI Mailing List Subject: Re: [RFC PATCH 35/35] Add Xen virtual block device driver. References: <4421D943.1090804@garzik.org> <1143202673.18986.5.camel@localhost.localdomain> <4423E853.1040707@garzik.org> <4423F60B.6020805@garzik.org> <1143207657.2882.65.camel@laptopd505.fenrus.org> In-Reply-To: <1143207657.2882.65.camel@laptopd505.fenrus.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.0.5 on srv5.dvmed.net summary: Content analysis details: (-2.5 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1134 Lines: 29 Arjan van de Ven wrote: > On Fri, 2006-03-24 at 08:37 -0500, Jeff Garzik wrote: >> Jeff Garzik wrote: >>> In fact, SCSI should make a few things easier, because the notion of >>> host+bus topology is already present, and notion of messaging is already >>> present, so you don't have to recreate that in a Xen block device >>> infrastructure. >> Another benefit of SCSI: when an IBM hypervisor in the Linux kernel >> switched to SCSI, that allowed them to replace several drivers (virt >> disk, virt cdrom, virt floppy?) with a single virt-SCSI driver. > but there's a generic one for that: iSCSI > so in theory you only need to provide a network driver then ;) Talk about lots of overhead :) OTOH, I bet that T10 is acting at high speed, right this second, to form a committee, and multiple sub-committees, to standardize SCSI transported over XenBus. SXP anyone? :) Jeff - 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/