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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 D583CC32789 for ; Tue, 6 Nov 2018 07:13:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 914082085B for ; Tue, 6 Nov 2018 07:13:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="OeZlf9u7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 914082085B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387667AbeKFQhi (ORCPT ); Tue, 6 Nov 2018 11:37:38 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:60164 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387397AbeKFQhi (ORCPT ); Tue, 6 Nov 2018 11:37:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=52Uw9UTCp368eDtHyqduuo1cg5P/3UO0sHb8dhbVkNQ=; b=OeZlf9u7m2uMdUZ63xLxBUNmp PkRwibB4RQ/bYgZAN1yx4XtzRbmDMRwTYlnJTztNl23HIf2uvtaT1dRN8IFwudy4CANipOw5nPe/Z W6HFMuT/DGtWIt0CNw1DBmTxoFCgJIeQxSpNejoF67eBPMe/ufAivuDpksMnjypIWJy3xWcUxoXHH R29/+IvaSdInSnkorNUkI124Pj/aRoksSEa2sLHSDwhkP8iO1YmAp+Q9nHk/CJQLwBp3bSRlexWPo lYntX7U/XX/uNLQMA9rhqJmqVmTiuxxUo3UPseGloZgMxEv6FlLl8FFg2rT3SVq3QjgCETI31Uvi8 w91Nl1sJw==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1gJvYb-0001v8-6J; Tue, 06 Nov 2018 07:13:49 +0000 Date: Mon, 5 Nov 2018 23:13:49 -0800 From: Christoph Hellwig To: Jason Wang Cc: Vitaly Mayatskih , "Michael S . Tsirkin" , Paolo Bonzini , kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, stefanha@redhat.com Subject: Re: [PATCH 0/1] vhost: add vhost_blk driver Message-ID: <20181106071349.GA5526@infradead.org> References: <20181102182123.29420-1-v.mayatskih@gmail.com> <6a7f1668-bf2d-0caa-2efd-c8fab5f1db24@redhat.com> <57eefa62-7e66-786d-441c-5dd6b0d451a5@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <57eefa62-7e66-786d-441c-5dd6b0d451a5@redhat.com> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 06, 2018 at 10:45:08AM +0800, Jason Wang wrote: > > Storage industry is shifting away from SCSI, which has a scaling > > problem. > > > Know little about storage. For scaling, do you mean SCSI protocol itself? If > not, it's probably not a real issue for virtio-scsi itself. The above is utter bullshit. There is a big NVMe hype, but it is not because "SCSI has a scaling problem", but because the industry can sell a new thing, and the standardization body seems easier to work with.