From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57039) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y1vWy-0007Va-Q0 for qemu-devel@nongnu.org; Fri, 19 Dec 2014 06:15:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Y1vWs-0001m6-M5 for qemu-devel@nongnu.org; Fri, 19 Dec 2014 06:15:36 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51543) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y1vWs-0001m2-E9 for qemu-devel@nongnu.org; Fri, 19 Dec 2014 06:15:30 -0500 Message-ID: <549408C8.70107@redhat.com> Date: Fri, 19 Dec 2014 12:15:20 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <20141219120340.3416948b@nial.brq.redhat.com> In-Reply-To: <20141219120340.3416948b@nial.brq.redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] broken backward migration due to commit 461a275 "parallel: adding vmstate for save/restore" List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Igor Mammedov , qemu-devel@nongnu.org Cc: dgilbert@redhat.com, Pavel.Dovgaluk@ispras.ru, quintela@redhat.com On 19/12/2014 12:03, Igor Mammedov wrote: > steps to reproduce: > > Current master source: > qemu-system-x86_64 -monitor stdio -M pc-i440fx-2.1 > (qemu) stop > (qemu) migrate "exec:gzip -c > STATEFILE.gz" > > Target: > qemu-system-x86_64-2.1 -monitor stdio -M pc-i440fx-2.1 -incoming "exec: gzip -c -d STATEFILE.gz" > That's expected. Backwards migration is not supported by upstream, and there's no equivalent of subsections for entire devices. Just use "-parallel none". Paolo