From mboxrd@z Thu Jan 1 00:00:00 1970 From: Douglas Gilbert Subject: T10 adds locally assigned UUID designation descriptor Date: Mon, 8 Feb 2016 12:33:01 -0500 Message-ID: <56B8D14D.7020502@interlog.com> Reply-To: dgilbert@interlog.com Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.infotech.no ([82.134.31.41]:60941 "EHLO smtp.infotech.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753345AbcBHRdI (ORCPT ); Mon, 8 Feb 2016 12:33:08 -0500 Received: from localhost (localhost [127.0.0.1]) by smtp.infotech.no (Postfix) with ESMTP id 3ED1220418F for ; Mon, 8 Feb 2016 18:33:05 +0100 (CET) Received: from smtp.infotech.no ([127.0.0.1]) by localhost (smtp.infotech.no [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TMahS1ON-6LN for ; Mon, 8 Feb 2016 18:33:03 +0100 (CET) Received: from [192.168.48.86] (host-45-58-206-50.dyn.295.ca [45.58.206.50]) by smtp.infotech.no (Postfix) with ESMTPA id EB8FC2040AD for ; Mon, 8 Feb 2016 18:33:02 +0100 (CET) Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: SCSI development list Recently, in draft spc5r08, T10 added a locally assigned RFC 4122 UUID *** designation descriptor. That descriptor can now be returned for VPD page 0x83 (device identification) amongst others. It can be used anywhere SCSI needs a unique identifier expanding the previous set of preferred identifiers: EUI, NAA and SCSI_name (iSCSI). In the soon to be released sg3_utils version 1.42 the new UUID designation descriptor is decoded including Hannes' --export option found in sg_inq, for example: # sg_inq --export /dev/sg0 ... SCSI_IDENT_LUN_UUID=11223344-5566-7788-aabb-ccddeeffffee Perhaps some udev work is needed to incorporate this new identifier. Doug Gilbert ** see https://en.wikipedia.org/wiki/Universally_unique_identifier