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=-2.3 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 2791CC54FCB for ; Mon, 27 Apr 2020 13:54:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0C4EA206BF for ; Mon, 27 Apr 2020 13:54:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726769AbgD0Nyd (ORCPT ); Mon, 27 Apr 2020 09:54:33 -0400 Received: from verein.lst.de ([213.95.11.211]:48280 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726651AbgD0Nyd (ORCPT ); Mon, 27 Apr 2020 09:54:33 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 31B2268C7B; Mon, 27 Apr 2020 15:54:28 +0200 (CEST) Date: Mon, 27 Apr 2020 15:54:27 +0200 From: Christoph Hellwig To: Max Gurtovoy Cc: Christoph Hellwig , James Smart , linux-nvme@lists.infradead.org, kbusch@kernel.org, sagi@grimberg.me, martin.petersen@oracle.com, linux-rdma@vger.kernel.org, idanb@mellanox.com, axboe@kernel.dk, vladimirk@mellanox.com, oren@mellanox.com, shlomin@mellanox.com, israelr@mellanox.com, jgg@mellanox.com Subject: Re: [PATCH 05/17] nvme-fabrics: Allow user enabling metadata/T10-PI support Message-ID: <20200427135427.GA2835@lst.de> References: <20200421151747.GA10837@lst.de> <54c05d2d-2ea5-bf58-455f-91efa085aa9b@mellanox.com> <70f40e49-d9d7-68fe-6a63-a73fabcd146d@gmail.com> <172c1860-bebe-04b2-a9ab-2c03c7cfbf18@mellanox.com> <20200423055447.GB9486@lst.de> <639d6edd-ffa6-f08a-9fa2-047ca97c47ee@mellanox.com> <20200424070647.GB24059@lst.de> <7ff771eb-078e-7eb1-d363-11f96b78eb64@mellanox.com> <20200427060411.GA16186@lst.de> <2c6f172a-7923-6531-8d19-f8c496964b9d@mellanox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2c6f172a-7923-6531-8d19-f8c496964b9d@mellanox.com> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Mon, Apr 27, 2020 at 04:52:52PM +0300, Max Gurtovoy wrote: > but the default format on NVMe pci drives is without metadata and to enable > it we do an NVM format command. The defaut namespace format is entirely vendor specific for both PCIe and Fabrics. For OEMs that rely on PI the drives will usually shipped with a PI-enabled format.