From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54628) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g0Xve-0004PF-FY for qemu-devel@nongnu.org; Thu, 13 Sep 2018 16:09:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g0XvV-0002ke-FD for qemu-devel@nongnu.org; Thu, 13 Sep 2018 16:09:28 -0400 References: <56133002-7a79-bf6a-8835-fba043638224@redhat.com> <81bba910-3e33-376d-f490-151fcccd4322@redhat.com> From: Eric Blake Message-ID: Date: Thu, 13 Sep 2018 15:06:54 -0500 MIME-Version: 1.0 In-Reply-To: <81bba910-3e33-376d-f490-151fcccd4322@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Can I only commit from active image to corresponding range of its backing file by qemu cmd? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Max Reitz , lampahome , QEMU Developers , Qemu-block , Markus Armbruster On 9/13/18 2:41 PM, Max Reitz wrote: > On 13.09.18 20:37, Max Reitz wrote: > > [...] > >> Or, we would have to use backing=null, but for some reason that doesn't >> work. I'll have to investigate. > > Turns out this was fixed in e59a0cf17b1b9932b65e6fc25d6856976f5e4831. > > (Why does Fedora still have only qemu 2.11?) Fedora 28 + virtmaint-sig-virt-preview COPR has qemu 3.0. Come join us on the bleeding edge :) > So starting with 2.12, putting a "'backing':null" behind > "'driver':'qcow2," will work just as well as rebasing img.003. Good to hear. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org