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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 28B9AC54EBD for ; Mon, 9 Jan 2023 17:07:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229499AbjAIRHA (ORCPT ); Mon, 9 Jan 2023 12:07:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237334AbjAIRGX (ORCPT ); Mon, 9 Jan 2023 12:06:23 -0500 Received: from mail-pg1-f174.google.com (mail-pg1-f174.google.com [209.85.215.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E13184102D; Mon, 9 Jan 2023 09:05:31 -0800 (PST) Received: by mail-pg1-f174.google.com with SMTP id q9so6313472pgq.5; Mon, 09 Jan 2023 09:05:31 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=D+Jk43bfwlT9wi1gXomrMQ7R6y2uWjif0guEJB9OZDk=; b=AgRpPFcCcEUfpvrnpf7tuWoBrY6hLMd2AMP3pyacjXORPUOFwBbSDJs1T8eYv3/If6 +GQ+kH7U/VH6cG4WOz7apqq9UyYjb8FfixYIDG+QOd4HW5NM5xyi12byIiHihJMtsIzw uuvUwYlbzP63xVTffOxoJBOznvDIo0XQQLCmw5vafBbglrwqZxX9t0f7NH7R8nbVuhqK /rLb9aKwhNe4VtSH8Uh42lFWJTQ3ZjT/QpZ/VpmH5JlTFyXNYu9xzLgyZYJh6icRMH5M KyVtSkXcMApgUSi517Dak25tC4y+nwVvLKTP98lRGPGLvN7rW6SUlpzp1RX3wd4pbVL2 R/4Q== X-Gm-Message-State: AFqh2kqJsNZWtC0+NTRBgXXTBhhbruh2h0WK3L59kedC7oeA6KInTft4 T9mfttnwujlcwNO+S8DFguI= X-Google-Smtp-Source: AMrXdXt0A8n0S+XnWdQfOF5gLmeJIIc52A1L37LfeDPhxxtdIXnVFVgm2rLmk9/LhLAJaqj32xc5sw== X-Received: by 2002:a62:6145:0:b0:581:7cb0:1eb8 with SMTP id v66-20020a626145000000b005817cb01eb8mr44017246pfb.17.1673283931028; Mon, 09 Jan 2023 09:05:31 -0800 (PST) Received: from ?IPV6:2620:15c:211:201:9f06:14dd:484f:e55c? ([2620:15c:211:201:9f06:14dd:484f:e55c]) by smtp.gmail.com with ESMTPSA id 69-20020a621748000000b005810a54fdefsm6311863pfx.114.2023.01.09.09.05.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Jan 2023 09:05:30 -0800 (PST) Message-ID: <6079a21f-e8da-05bb-b6a5-be4cd350ac66@acm.org> Date: Mon, 9 Jan 2023 09:05:28 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: [External] [LSF/MM/BPF BoF] Session for Zoned Storage 2023 Content-Language: en-US To: =?UTF-8?Q?Javier_Gonz=c3=a1lez?= , "Viacheslav A.Dubeyko" Cc: Viacheslav Dubeyko , Luis Chamberlain , Linux FS Devel , linux-block@vger.kernel.org, =?UTF-8?Q?Matias_Bj=c3=b8rling?= , Damien Le Moal , Adam Manzanares , Hans Holmberg , lsf-pc@lists.linux-foundation.org References: <4CC4F55E-17B3-47E2-A8C5-9098CCEB65D6@dubeyko.com> <5DF10459-88F3-48DA-AEB2-5B436549A194@bytedance.com> <20230109153315.waqfokse4srv6xlz@mpHalley-2.localdomain> From: Bart Van Assche In-Reply-To: <20230109153315.waqfokse4srv6xlz@mpHalley-2.localdomain> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 1/9/23 07:33, Javier González wrote: > On 06.01.2023 17:56, Viacheslav A.Dubeyko wrote: [ ... ] > As a general comment, do we want to talk about ZNS alone, or zoned > storage in general? We have of course SMR, but also zoned UFS with > actual use-cases. I propose to broaden the conversation from ZNS to ZNS (NVMe) + ZBC (SCSI). >> I think we can consider such discussions: >> (1) I assume that we still need to discuss PO2 zone sizes? > > For this discussion to move forward, we need users rather than vendors > talking about the need. If someone is willing to drive this discussion, > then it makes sense. I do not believe we will make progress otherwise. In JEDEC meetings I hear that UFS vendors strongly request support for zone sizes that are not a power of two. The JEDEC UFS committee is currently busy with requesting an MoU from T10 for permission to base JEDEC standards on ZBC. We plan to finalize the ZUFS (zoned UFS) specification once that MoU has been established (probably later this spring). An additional topic I want to talk about is support for queue depths > 1 for sequential write required zone type. I plan to post patches soon (later this week). Thanks, Bart.