Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964782AbWCXTFh (ORCPT ); Fri, 24 Mar 2006 14:05:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932620AbWCXTFh (ORCPT ); Fri, 24 Mar 2006 14:05:37 -0500 Received: from sabe.cs.wisc.edu ([128.105.6.20]:2460 "EHLO sabe.cs.wisc.edu") by vger.kernel.org with ESMTP id S932606AbWCXTFg (ORCPT ); Fri, 24 Mar 2006 14:05:36 -0500 Message-ID: <442442CB.4090603@cs.wisc.edu> Date: Fri, 24 Mar 2006 13:04:43 -0600 From: Mike Christie User-Agent: Thunderbird 1.5 (X11/20060313) MIME-Version: 1.0 To: Dave C Boutcher CC: Jeff Garzik , Arjan van de Ven , 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> <4423F91F.4060007@garzik.org> <17444.4455.240044.724257@hound.rchland.ibm.com> In-Reply-To: <17444.4455.240044.724257@hound.rchland.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1462 Lines: 32 Dave C Boutcher wrote: > Jeff Garzik wrote: >> 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? :) > > Actually SRP (which T10 has now stopped working on) fits the bill very > nicely. > Does the IBM vscsi code/SPEC follow the SRP SPEC or is it slightly modified? We also have a SRP initiator in kernel now too. It is just not in the drivers/scsi dir. - 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/