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 68D05C433FE for ; Wed, 12 Oct 2022 14:18:52 +0000 (UTC) Received: from localhost ([::1]:46904 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oicZP-0000ol-5w for qemu-devel@archiver.kernel.org; Wed, 12 Oct 2022 10:18:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39856) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oicWN-0007js-Cz for qemu-devel@nongnu.org; Wed, 12 Oct 2022 10:15:43 -0400 Received: from mail-yw1-x112a.google.com ([2607:f8b0:4864:20::112a]:33540) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oicWL-00038b-QX for qemu-devel@nongnu.org; Wed, 12 Oct 2022 10:15:43 -0400 Received: by mail-yw1-x112a.google.com with SMTP id 00721157ae682-354c7abf786so157148467b3.0 for ; Wed, 12 Oct 2022 07:15:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=x5q5UaeIrzODWUHdSNbpGgDcgQ6EbQBZ+oosfLDb2YI=; b=m+2+i6+ySOcQ9xYX0M8qcI3zldLPcVnGR/MREtYGOuwWUR8klZ7DxqMRxCQG1uvI6T o4EaPCUuvRKHTjmCuCDazJc7eS2AOG2HADNfAH3b8zA9AyRuYn8I7cytI/+EfoAHfnPJ CO49E/nWCh8FWwSUSfO7j2yUY3sRIypwg+z6C6CCgQaGd6s0Qp82KXM4cMzLADYnOAy+ Ne3OjEhvU0r/w6HKrdK+96gU3Ne3zWGXdhUaS7lXFr54viXrwB0lHGeRmMjANhL6+MHt VtqC46mrB7u4rntkAdUjf8yj/wxPqvadrP/EdSJURKYiGpPA6njKUdlSc2Eo8JNkqRk2 Ayxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=x5q5UaeIrzODWUHdSNbpGgDcgQ6EbQBZ+oosfLDb2YI=; b=mXezjWnQIBDiofD6ePAdcmtQ+8rUz8F9ZCRsHWbWDffbhq+n6pPX799sfUIz9Lr5ke AdkXNt9O1IlAjcNgWe74Ys30l2oyU1JgxxeFGVDTO/L8AvUbCRUTV4VIR8n6DEd2+8Ch XnKwAD5iXmondbUFi53R0ZwHFOhk/h7NZ43wPkjub7ReyrQ8bCumxsbwZb+LcnUD2fdz CBeeS3YIfWaKTncyKMyQ47Lcrug96kY/jDdwr8y/wDedNL2aW/xkG+/Jh1sVNqTA0vM1 qnc8cZl2GOle+gmgpqJMuUwDccRDGqoJ+TBixfoHchp/Fm13QeyyPsiCFrKdbBOwqSNL +8Qg== X-Gm-Message-State: ACrzQf1RmlDW+u7+yx1ri8ZYSw3EBzN0y0Feyf2JaQiiwQPnSG6/9Kra WZT4mjnh05Osydip6nbhR3m7LZKpzqf4kZgYvyM= X-Google-Smtp-Source: AMsMyM78XpQ2emyq3cEKwe6c/B+RtPQuw0V4XAcVx9GYt9ubZEDpXJ+zfRaTOZj2b/YhUXRskbRctqj6quzdULOPTkI= X-Received: by 2002:a0d:d78c:0:b0:360:bbf0:ef88 with SMTP id z134-20020a0dd78c000000b00360bbf0ef88mr15764109ywd.206.1665584140677; Wed, 12 Oct 2022 07:15:40 -0700 (PDT) MIME-Version: 1.0 References: <20221006101400.GC7636@redhat.com> In-Reply-To: <20221006101400.GC7636@redhat.com> From: Stefan Hajnoczi Date: Wed, 12 Oct 2022 10:15:28 -0400 Message-ID: Subject: Re: ublk-qcow2: ublk-qcow2 is available To: "Richard W.M. Jones" 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 Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=2607:f8b0:4864:20::112a; envelope-from=stefanha@gmail.com; helo=mail-yw1-x112a.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 Thu, 6 Oct 2022 at 06:14, Richard W.M. Jones wrote: > > 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? I was wrong, qemu-nbd has syntax to use io_uring: $ qemu-nbd ... --image-opts driver=file,filename=test.img,aio=io_uring The new libblkio driver will also support io_uring, but QEMU's built-in io_uring support is already available and can be used as shown above. Stefan