From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Anderson Subject: Re: [PATCH] zfcp: Report FCP LUN to SCSI midlayer Date: Thu, 21 Jun 2007 21:40:35 -0700 Message-ID: <20070622044035.GB5560@us.ibm.com> References: <200706191025.30986.swen@vnet.ibm.com> <20070619171217.GA30099@infradead.org> <1182307586.10507.7.camel@mulgrave.il.steeleye.com> <20070621150308.GA29643@schmichrtp.de.ibm.com> <1182459492.3923.35.camel@mulgrave.il.steeleye.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from e35.co.us.ibm.com ([32.97.110.153]:49043 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752962AbXFVEke (ORCPT ); Fri, 22 Jun 2007 00:40:34 -0400 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e35.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id l5M4eVXS025178 for ; Fri, 22 Jun 2007 00:40:31 -0400 Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v8.3) with ESMTP id l5M4eVr5239388 for ; Thu, 21 Jun 2007 22:40:31 -0600 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id l5M4eVxP003085 for ; Thu, 21 Jun 2007 22:40:31 -0600 Content-Disposition: inline In-Reply-To: <1182459492.3923.35.camel@mulgrave.il.steeleye.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: Christof Schmitt , linux-scsi@vger.kernel.org James Bottomley wrote: > A proposal to display the correct form of the LUN would be useful if you > wish to make it? ... The problem is really that SAM specifies a > possible 4 level structure with 4 possible address methods per level. > > The well known LUNs should be simple; there are only three: Report Lun, > Access Controls and Target Log Pages. The rest we really need input on. > For instance, I could see the vendors wishing us to combine a > multi-level flat addressing space into a single logical unit number, > whereas I could see them wanting us to supply some sort of hierarchy for > the peripheral and logical unit methods of addressing. > > Since you're already using 2 level flat addressing, how do you want to > see that represented? James, why would we would not want to display the lun per SAM4 4.6.2 as suggested by Stefan in a previous comment. -andmike -- Michael Anderson andmike@us.ibm.com