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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 218D4C433F5 for ; Thu, 10 Mar 2022 14:45:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=tbJ3eFJkh/E7Y4DNaMoAT+nkhu3e6n8bE/bz40gdlyo=; b=A3GGSMOS/OX9MxZCbU5NanCC5h 14bCpXG9HoWABt1zcsYohoHNnNavRP/Aq/M26draqBN2ZnNXPMiD6zxyfZ1hXiZBOzaSfZBIHnHWv /NmtoeIrJFD/w9I0hRVW14OslSuqaexDqUjBaVzr634kLOIZU6EiS0hMIoZYMb3qnIySxVI131UZL +80eM8ot8MraU+3aXWU6HzPZw0gc4D3dEHyW1Dn6gdESBelBNw0mUz0po9zoh693CEUBoUJ4CbjJt aJr/kLwcJb0GJ2ZhOoE4oPMZgIH7AAPGiSasINw+eTQoKUK+bCGCYIeuI52Jf1sZKEJGQiIOJhlT3 EXL3htfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nSK2C-00DAd5-0u; Thu, 10 Mar 2022 14:44:56 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nSK29-00DAbR-Nd for linux-nvme@lists.infradead.org; Thu, 10 Mar 2022 14:44:55 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id AB73D68AFE; Thu, 10 Mar 2022 15:44:49 +0100 (CET) Date: Thu, 10 Mar 2022 15:44:49 +0100 From: Christoph Hellwig To: Pankaj Raghav Cc: Christoph Hellwig , Luis Chamberlain , Adam Manzanares , Javier =?iso-8859-1?Q?Gonz=E1lez?= , jiangbo.365@bytedance.com, kanchan Joshi , Jens Axboe , Keith Busch , Sagi Grimberg , Matias =?iso-8859-1?Q?Bj=F8rling?= , Pankaj Raghav , Kanchan Joshi , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, Damien Le Moal Subject: Re: [PATCH 0/6] power_of_2 emulation support for NVMe ZNS devices Message-ID: <20220310144449.GA1695@lst.de> References: <20220308165349.231320-1-p.raghav@samsung.com> <20220310094725.GA28499@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220310_064453_943903_C302BCB3 X-CRM114-Status: GOOD ( 16.11 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Thu, Mar 10, 2022 at 01:57:58PM +0100, Pankaj Raghav wrote: > Yes, these drives are intended for Linux users that would use the zoned > block device. Append is supported but holes in the LBA space (due to > diff in zone cap and zone size) is still a problem for these users. I'd really like to hear from the users. Because really, either they should use a proper file system abstraction (including zonefs if that is all they need), or raw nvme passthrough which will alredy work for this case. But adding a whole bunch of crap because people want to use the block device special file for something it is not designed for just does not make any sense.