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 CBDFEC433F5 for ; Thu, 10 Feb 2022 20:46:54 +0000 (UTC) Received: from localhost ([::1]:48554 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nIGL7-0000QJ-Dd for qemu-devel@archiver.kernel.org; Thu, 10 Feb 2022 15:46:53 -0500 Received: from eggs.gnu.org ([209.51.188.92]:60754) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nIGIa-0007ue-SO for qemu-devel@nongnu.org; Thu, 10 Feb 2022 15:44:17 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:46574) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nIGIX-0007tM-42 for qemu-devel@nongnu.org; Thu, 10 Feb 2022 15:44:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1644525851; 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=1NebaQJGnMdiEbCsFi9N9t54DNBDadNplG9DLXMtqGY=; b=ajwIoV4VcePO/GjwT/Dya7SZo3iX5A3gMzdp5KWe7TZS0sheC+GPiqfJZLP5WJA0yYJiXk N2rCQNVCj4nNUYO8yXWISMXt1eu7QgW05iWFbZtln8R0qV79P5/DAYcUW8ioW2MyFUvI2Y 6kAQJj36VN8K+Zt+d5ORU6yHb0vMAJQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-22-_FQNX303PEmSJ7R4QMifgQ-1; Thu, 10 Feb 2022 15:44:07 -0500 X-MC-Unique: _FQNX303PEmSJ7R4QMifgQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 488001018722 for ; Thu, 10 Feb 2022 20:44:06 +0000 (UTC) Received: from localhost (unknown [10.39.194.34]) by smtp.corp.redhat.com (Postfix) with ESMTP id C261549A7; Thu, 10 Feb 2022 20:44:05 +0000 (UTC) Date: Thu, 10 Feb 2022 20:44:04 +0000 From: "Richard W.M. Jones" To: "Dr. David Alan Gilbert (git)" Subject: Re: [PATCH v2] Deprecate C virtiofsd Message-ID: <20220210204404.GA22879@redhat.com> References: <20220210174714.19843-1-dgilbert@redhat.com> MIME-Version: 1.0 In-Reply-To: <20220210174714.19843-1-dgilbert@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=rjones@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , Cc: berrange@redhat.com, slp@redhat.com, qemu-devel@nongnu.org, virtio-fs@redhat.com, stefanha@redhat.com, vgoyal@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Feb 10, 2022 at 05:47:14PM +0000, Dr. David Alan Gilbert (git) wrote: > From: "Dr. David Alan Gilbert" > > There's a nice new Rust implementation out there; recommend people > do new work on that. > > Signed-off-by: Dr. David Alan Gilbert > --- > docs/about/deprecated.rst | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst > index 47a594a3b6..3c73d22729 100644 > --- a/docs/about/deprecated.rst > +++ b/docs/about/deprecated.rst > @@ -454,3 +454,20 @@ nanoMIPS ISA > > The ``nanoMIPS`` ISA has never been upstreamed to any compiler toolchain. > As it is hard to generate binaries for it, declare it deprecated. > + > +Tools > +----- > + > +virtiofsd > +''''''''' > + > +There is a new Rust implementation of ``virtiofsd`` at > +``https://gitlab.com/virtio-fs/virtiofsd``; > +since this is now marked stable, new development should be done on that > +rather than the existing C version in the QEMU tree. > +The C version will still accept fixes and patches that > +are already in development for the moment, but will eventually > +be deleted from this tree. > +New deployments should use the Rust version, and existing systems > +should consider moving to it. The command line and feature set > +is very close and moving should be simple. I'm not qualified to say if the Rust impl is complete enough to replace the C version, so I won't add a reviewed tag. However I want to say that from the point of view of downstream packagers of qemu -- especially Fedora -- it would be helpful if we could direct both upstream development effort and downstream packaging into just the one virtiofsd. So I agree in principle with this. 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