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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 120A4C4332F for ; Wed, 12 Oct 2022 14:15:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229655AbiJLOPx (ORCPT ); Wed, 12 Oct 2022 10:15:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229792AbiJLOPm (ORCPT ); Wed, 12 Oct 2022 10:15:42 -0400 Received: from mail-yw1-x1133.google.com (mail-yw1-x1133.google.com [IPv6:2607:f8b0:4864:20::1133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CCE3E086; Wed, 12 Oct 2022 07:15:41 -0700 (PDT) Received: by mail-yw1-x1133.google.com with SMTP id 00721157ae682-3573ed7cc15so156886517b3.1; 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=gzM0tV+lyhSxUHneSx3DMPT2OWnIc03j6XJAUEJry4IM+U7QcSgDLXssmSSiB1ZlSi YjyXtQjQbxzQ4OkXWVgedlfMkjKrCFHAN7f6Q2xXnk8vgTjqh8A2Tw2g4HV5r6KiIq3J t5nl/h8QfwSz8KVDm7MOdZjwy5EAr2XVwmSb48/nR8klgXOhUYPzigc4a37WBhu9RP5o O5z/+GWHkw4k1uvkCgmn9ubCm2B7876HlLmOapdhy7lfDWr0SZSkh6mZ2YvsdOtIdL4F vPHabHEZVJt0aG4sIYRvpoMB/bCKF1vU2oLmuZco77ahfgiT510h5eT1DrVTp+BIgGpF 3KQg== X-Gm-Message-State: ACrzQf3af8wDObnTaJ+/7FGjEOC1nuvIpUW70lTSboOnEyOIfnuAGOoM uQTLevABQErwfkdJ9R44NpSe/+xNeUt3fccnnWM= 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" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org 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