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 39DB4C433FE for ; Thu, 6 Oct 2022 10:22:12 +0000 (UTC) Received: from localhost ([::1]:57112 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ogO14-0007mp-Kl for qemu-devel@archiver.kernel.org; Thu, 06 Oct 2022 06:22:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56168) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ogNtK-0002rs-NP for qemu-devel@nongnu.org; Thu, 06 Oct 2022 06:14:10 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:27418) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ogNtH-0003z8-Pa for qemu-devel@nongnu.org; Thu, 06 Oct 2022 06:14:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665051245; 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=dAdYI9+QG+yvH01DAjeN7mJ9hlotsPkqRPFvWXOIksI=; b=Qgnyv9ecFAPqGx6XXytI+AikxS82KmI1YXCSDg+FySGh1GLzHZI+03rHWAsPvtRoK+svrn eXgbz68sKIOaP7JTlVMnEnRsrAuKS5V/dHpoek0LGJlemqowZOqO2ZCGvCxetMS5apcS1E d1WRGGJjeqR+wkmiu3BpksbLoeTCK9g= 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-518-SWus2_ThNQC2TQKOd7pj9g-1; Thu, 06 Oct 2022 06:14:02 -0400 X-MC-Unique: SWus2_ThNQC2TQKOd7pj9g-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B209C29AA2F4; Thu, 6 Oct 2022 10:14:01 +0000 (UTC) Received: from localhost (unknown [10.39.194.193]) by smtp.corp.redhat.com (Postfix) with ESMTP id 24E49477F55; Thu, 6 Oct 2022 10:14:01 +0000 (UTC) Date: Thu, 6 Oct 2022 11:14:00 +0100 From: "Richard W.M. Jones" To: Stefan Hajnoczi Cc: Ming Lei , Stefan Hajnoczi , io-uring@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Kirill Tkhai , Manuel Bentele , qemu-devel@nongnu.org, Kevin Wolf , Xie Yongji , "Denis V. Lunev" , Stefano Garzarella Subject: Re: ublk-qcow2: ublk-qcow2 is available Message-ID: <20221006101400.GC7636@redhat.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=rjones@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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" On Tue, Oct 04, 2022 at 09:53:32AM -0400, Stefan Hajnoczi wrote: > qemu-nbd doesn't use io_uring to handle the backend IO, Would this be fixed by your (not yet upstream) libblkio driver for qemu? Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v