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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 7FAE2C352A4 for ; Mon, 10 Feb 2020 22:26:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5A12A2082F for ; Mon, 10 Feb 2020 22:26:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727433AbgBJW0B (ORCPT ); Mon, 10 Feb 2020 17:26:01 -0500 Received: from kvm5.telegraphics.com.au ([98.124.60.144]:33440 "EHLO kvm5.telegraphics.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727422AbgBJW0B (ORCPT ); Mon, 10 Feb 2020 17:26:01 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by kvm5.telegraphics.com.au (Postfix) with ESMTP id 1B613283A7; Mon, 10 Feb 2020 17:25:57 -0500 (EST) Date: Tue, 11 Feb 2020 09:25:59 +1100 (AEDT) From: Finn Thain To: Keith Busch cc: Tim Walker , linux-block@vger.kernel.org, linux-scsi , linux-nvme@lists.infradead.org Subject: Re: [LSF/MM/BPF TOPIC] NVMe HDD In-Reply-To: <20200210204313.GA3736@dhcp-10-100-145-180.wdl.wdc.com> Message-ID: References: <20200210204313.GA3736@dhcp-10-100-145-180.wdl.wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Mon, 10 Feb 2020, Keith Busch wrote: > Right now the nvme driver unconditionally sets QUEUE_FLAG_NONROT > (non-rational, i.e. ssd), on all nvme namespace's request_queue flags. I agree -- the standard nomenclature is not rational ;-) Air-cooled is not "solid state". Any round-robin algorithm is "rotational". No expensive array is a "R.A.I.D.". There's no "S.C.S.I." on a large system... 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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 8D9A2C352A4 for ; Mon, 10 Feb 2020 23:05:13 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 594A1206D6 for ; Mon, 10 Feb 2020 23:05:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="JANJEkpk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 594A1206D6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:Message-ID: In-Reply-To:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hmw/IM3IYqMc6Kx4Ea1sFyMRneaaEs0MO3KnH8d7gSU=; b=JANJEkpksGkPHs E3oe3SyekHfJASucJF0FJo4GkHJpJtlB02sm5qCgiXNiBmdO6SR6SOXzMNffq2Su56KgM3YkAiCY3 SNRZAvsGrcEVyLrs6HsXjuke1IhSMWiGGQJ6IwxUoaQxtanP94ADTMEYRs5Bbo5enIQzO09FDQCLk aVsjRH1WgaOiYja/ZqM7k4I38nDM5BFL/xtflryZB6jMEkxnTigsH2ze2g+xi7LGbU4QA96Hw0Cyg y5DNl9/bBEB3dof2gAExJ1ihh4tzkqn1qc2J+SzEqKvQM0LR+8xrp4A+nGq7ytUZQfq+15bus4/ns g4j1anlb+tJvW5g4eqyg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j1I73-00032D-1D; Mon, 10 Feb 2020 23:05:09 +0000 Received: from kvm5.telegraphics.com.au ([98.124.60.144]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j1I70-0002H2-9H for linux-nvme@lists.infradead.org; Mon, 10 Feb 2020 23:05:07 +0000 Received: from localhost (localhost.localdomain [127.0.0.1]) by kvm5.telegraphics.com.au (Postfix) with ESMTP id 1B613283A7; Mon, 10 Feb 2020 17:25:57 -0500 (EST) Date: Tue, 11 Feb 2020 09:25:59 +1100 (AEDT) From: Finn Thain To: Keith Busch Subject: Re: [LSF/MM/BPF TOPIC] NVMe HDD In-Reply-To: <20200210204313.GA3736@dhcp-10-100-145-180.wdl.wdc.com> Message-ID: References: <20200210204313.GA3736@dhcp-10-100-145-180.wdl.wdc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200210_150506_391818_EAE1D0BA X-CRM114-Status: UNSURE ( 4.26 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, Tim Walker , linux-scsi Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Mon, 10 Feb 2020, Keith Busch wrote: > Right now the nvme driver unconditionally sets QUEUE_FLAG_NONROT > (non-rational, i.e. ssd), on all nvme namespace's request_queue flags. I agree -- the standard nomenclature is not rational ;-) Air-cooled is not "solid state". Any round-robin algorithm is "rotational". No expensive array is a "R.A.I.D.". There's no "S.C.S.I." on a large system... _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme