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 D969BC27C76 for ; Sat, 28 Jan 2023 11:35:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233188AbjA1Lf2 (ORCPT ); Sat, 28 Jan 2023 06:35:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230474AbjA1Lf1 (ORCPT ); Sat, 28 Jan 2023 06:35:27 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 32EAF233D5 for ; Sat, 28 Jan 2023 03:34:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674905680; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vhnwvkrxI3b8cKGQbCxF3BGuyIUNQ+hsLoVh9xY6Qas=; b=aT5DUwDyFl6RxQ5y/3Hs9ZXwrLzAIVQZcB7PW1BZKUpoHT4oZlmZrvejciMiEPsc7ti8FJ wfsd6xH+wt+pceAbuAzP613GAMuVx5+iQd0aXXZ3IGw4F3fwUZre4e0NUb6dL7k1coen0e NDfQJeP89TM8FD7ZN3tW6nQUAwwxbDc= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-462-GRhoCibNOKq_tWOyR7Wcnw-1; Sat, 28 Jan 2023 06:34:36 -0500 X-MC-Unique: GRhoCibNOKq_tWOyR7Wcnw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B942229AA3B8; Sat, 28 Jan 2023 11:34:35 +0000 (UTC) Received: from T590 (ovpn-8-23.pek2.redhat.com [10.72.8.23]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6D86014171BE; Sat, 28 Jan 2023 11:34:27 +0000 (UTC) Date: Sat, 28 Jan 2023 19:34:22 +0800 From: Ming Lei To: "Viacheslav A.Dubeyko" Cc: Viacheslav Dubeyko , Luis Chamberlain , Linux FS Devel , linux-block@vger.kernel.org, Javier =?iso-8859-1?Q?Gonz=E1lez?= , Matias =?iso-8859-1?Q?Bj=F8rling?= , Bart Van Assche , Damien Le Moal , Adam Manzanares , Hans Holmberg , lsf-pc@lists.linux-foundation.org, andreas@metaspace.dk Subject: Re: [External] [LSF/MM/BPF BoF] Session for Zoned Storage 2023 Message-ID: References: <4CC4F55E-17B3-47E2-A8C5-9098CCEB65D6@dubeyko.com> <5DF10459-88F3-48DA-AEB2-5B436549A194@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5DF10459-88F3-48DA-AEB2-5B436549A194@bytedance.com> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Fri, Jan 06, 2023 at 05:56:24PM -0800, Viacheslav A.Dubeyko wrote: > > > > On Jan 6, 2023, at 11:30 AM, Viacheslav Dubeyko wrote: > > > > > > > >> On Jan 6, 2023, at 11:18 AM, Luis Chamberlain wrote: > >> > >> On Fri, Jan 06, 2023 at 11:17:19AM -0800, Viacheslav Dubeyko wrote: > >>> Hello, > >>> > >>> As far as I can see, I have two topics for discussion. > >> > >> What's that? > > > > I am going to share these topics in separate emails. :) > > > > (1) I am going to share SSDFS patchset soon. And topic is: > > SSDFS + ZNS SSD: deterministic architecture decreasing TCO cost of data infrastructure. > > > > (2) Second topic is: > > How to achieve better lifetime and performance of caching layer with ZNS SSD? > > > > I think we can consider such discussions: > (1) I assume that we still need to discuss PO2 zone sizes? > (2) Status of ZNS SSD support in F2FS, btrfs (maybe, bcachefs and other file systems) > (3) Any news from ZoneFS (+ ZenFS maybe)? > (4) New ZNS standard features that we need to support on block layer + FS levels? > (5) ZNS drive emulation + additional testing features? ZNS drive emulation can be done as one ublk target(userspace implementation with ublk driver extension), and it was discussed before: https://github.com/ming1/ubdsrv/pull/28 Thanks, Ming