From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kip Macy Subject: Re: iscsi Date: Wed, 21 Jan 2004 09:22:56 -0800 (PST) Sender: xen-devel-admin@lists.sourceforge.net Message-ID: <20040121090723.F49761@demos.bsdclusters.com> References: <20040120111843.Y26100@demos.bsdclusters.com> <1074703681.26490.287.camel@wyvis> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Return-path: In-Reply-To: <1074703681.26490.287.camel@wyvis> Errors-To: xen-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Rolf Neugebauer Cc: Ian Pratt , xen-devel@lists.sourceforge.net List-Id: xen-devel@lists.xenproject.org > > to clarify, you are talking about netapp solutions here not generic > iSCSI features, right? as i understand it you can configure block-level > networked access to virtual disks on a netapp filer via iSCSI, and the > filer can be configured to do COW for these virtual disks. Correct. > > if this is correct why don't you not just configure each domain to talk > iSCSI to the filer directly via their virtual network interfaces instead > of exporting the virtual disks (LUNs) through VBDs from dom0 as your > initial email seem to indicate? or is the root partition problem the > issue? > For the first pass where I'm only running Linux that will, at least in principle, work. There are a couple of issues that make that approach more work. From a configuration standpoint I want the virtual machines that act as sandboxes for developers to look like a normal machine. This entails the iSCSI backing looking like a normal disk for all intents and purposes. Second, I want to be able to map a developer to a LUN and then build a domain backed by that on an arbitrary physical machine. This would have the additional benefit of fully anonymizing the hardware. In the near future I want to be able to run other operating systems that do not have iscsi initiator support, nor ever will, in virtual machines. For this NFS/RAMDISK root is not an option. Thus I need to take the LUN mapping approach. I'll just have to hope that I can pull the Adaptec iSCSI HW initator driver into Xen, and that all the configuration tools will work. -Kip ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn