From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ewan Milne Subject: RE: Question on SCSI target scan Date: Mon, 18 Nov 2013 12:28:32 -0500 Message-ID: <1384795712.3839.6.camel@localhost.localdomain> References: <5645D6F831469342AF2BC26CC827D68C5940032A27@BRM-EXCH-3.corp.brocade.com> <94D0CD8314A33A4D9D801C0FE68B4029547B9343@G9W0745.americas.hpqcorp.net> Reply-To: emilne@redhat.com Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com ([209.132.183.28]:42993 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751377Ab3KRR3O (ORCPT ); Mon, 18 Nov 2013 12:29:14 -0500 In-Reply-To: <94D0CD8314A33A4D9D801C0FE68B4029547B9343@G9W0745.americas.hpqcorp.net> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: "Elliott, Robert (Server Storage)" Cc: Ramesh Chikkanayakanahally , "linux-scsi@vger.kernel.org" , "jbottomley@parallels.com" On Fri, 2013-11-15 at 23:53 +0000, Elliott, Robert (Server Storage) wrote: > Beware that just because the LUN inventory is the same doesn't mean > the logical units are the same. A logical unit at LUN X might have been > deleted and another logical unit created and assigned to LUN X, but > now containing different content. You need to check the logical unit > name (in the Device Identification VPD page) too. > --- > Rob Elliott HP Server Storage > If the properties of the volume behind a particular LUN are changed, shouldn't something like ASC/ASCQ 3F 03 INQUIRY DATA HAS CHANGED, 3F 04 DEVICE IDENTIFIER CHANGED be reported? Or can we not expect this if a LUN is removed and then re-added without an intervening REPORT LUNS command? (In that case, the REPORT LUNS data returned will be no different.) -Ewan