From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 229E7C2BA83 for ; Fri, 14 Feb 2020 18:14:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 02ADA222C2 for ; Fri, 14 Feb 2020 18:14:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389352AbgBNSN5 (ORCPT ); Fri, 14 Feb 2020 13:13:57 -0500 Received: from mga12.intel.com ([192.55.52.136]:42242 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404252AbgBNSN4 (ORCPT ); Fri, 14 Feb 2020 13:13:56 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Feb 2020 10:13:56 -0800 X-IronPort-AV: E=Sophos;i="5.70,441,1574150400"; d="scan'208";a="223094698" Received: from ddalessa-mobl.amr.corp.intel.com (HELO [10.254.204.146]) ([10.254.204.146]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 14 Feb 2020 10:13:55 -0800 From: Dennis Dalessandro Subject: RDMA device renames and node description To: "linux-rdma@vger.kernel.org" Cc: Jason Gunthorpe , Leon Romanovsky , Honggang LI , Gal Pressman Message-ID: <5ae69feb-5543-b203-2f1b-df5fe3bdab2b@intel.com> Date: Fri, 14 Feb 2020 13:13:53 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.4.2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Was there any discussion on the upgrade scenario for existing deployments as far as device-rename changing node descriptions? If someone is running an older version of rdma-core they are going to have a certain set of node descriptions for each node. This could be in logs, or configuration databases, who knows what. Now if they upgrade to a new version of rdma-core their node descriptions all automatically change out from under them by default. Of course the admin could disable the rename prior to upgrade and as Leon pointed out previously the upgrade won't remove the disablement file. The problem is they would have to know to do that ahead of time. -Denny