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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A0263C433EF for ; Mon, 18 Jul 2022 10:56:44 +0000 (UTC) Received: from localhost ([::1]:56918 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oDOQd-0001JB-Mr for qemu-devel@archiver.kernel.org; Mon, 18 Jul 2022 06:56:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58922) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oDOO5-0006zX-L3 for qemu-devel@nongnu.org; Mon, 18 Jul 2022 06:54:05 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:32719) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oDOO2-0004jv-Il for qemu-devel@nongnu.org; Mon, 18 Jul 2022 06:54:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1658141641; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3T/0Gd6KzqWSk+in+OSqd9+mGbrACq2r6OJxGurZNjk=; b=YMGpIpmQrXFars89xbfOul5qEmbKbKhYvdnx0WTPn1cir+QKZmmm66Hq80+S0yVeh8EYcI QAKYeDN9/ewOfB5G/drPN2EbOPpG601wu4fx8ivwdgSRtb8zTv89O5yp2NF+hODRG5BuNI KIQ7lAOPRvdyD0KG8RFXso2CScQT704= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-607-lhHKBfxBNhCVAzfa3MAqSA-1; Mon, 18 Jul 2022 06:53:58 -0400 X-MC-Unique: lhHKBfxBNhCVAzfa3MAqSA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D3C78101A54E; Mon, 18 Jul 2022 10:53:57 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.194.81]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7CEC3403D0C1; Mon, 18 Jul 2022 10:53:57 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 0EF2F21E690D; Mon, 18 Jul 2022 12:53:56 +0200 (CEST) From: Markus Armbruster To: Sam Li Cc: qemu-devel , Damien Le Moal , Dmitry Fomichev , Stefan Hajnoczi , Hanna Reitz , qemu block , Eric Blake , Kevin Wolf , Fam Zheng , Hannes Reinecke Subject: Re: [RFC v4 0/9] Add support for zoned device References: <20220712021345.8530-1-faithilikerun@gmail.com> <87pmiaubjz.fsf@pond.sub.org> Date: Mon, 18 Jul 2022 12:53:56 +0200 In-Reply-To: (Sam Li's message of "Tue, 12 Jul 2022 13:59:32 +0800") Message-ID: <871quid73v.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Sam Li writes: > Markus Armbruster =E4=BA=8E2022=E5=B9=B47=E6=9C=8812= =E6=97=A5=E5=91=A8=E4=BA=8C 13:47=E5=86=99=E9=81=93=EF=BC=9A >> >> Sam Li writes: >> >> > This patch series adds support for zoned device to virtio-blk emulatio= n. Zoned >> > Storage can support sequential writes, which reduces write amplificati= on in SSD, >> > leading to higher write throughput and increased capacity. >> >> Forgive me if this has already been discussed, or is explained deeper in >> the patch series... >> >> The commit message sounds like you're extending virtio-blk to optionally >> emulate zoned storage. Correct? > > Yes! The main purpose is to emulate zoned storage only for the zoned > device files. Right now, QEMU sees those as regular block devices. > >> PATCH 1 adds a new block block device driver 'zoned_host_device', and >> PATCH 9 exposes it in QAPI. This is for passing through a zoned host >> device, correct? > > Yes! It allows the guest os see zoned host device. It is still in > development. Maybe the implementations will change later. Your cover letter only mentions the virtio-blk part, not the pass-through part. Please correct that if you need to respin.