From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrey Korolyov Subject: Re: QEMU P2P migration speed Date: Fri, 07 Feb 2014 17:07:01 +0400 Message-ID: <52F4DA75.8000305@xdel.ru> References: <52F11E1C.8060608@xdel.ru> <52F1E7E1.5040607@redhat.com> <52F2169D.9080806@xdel.ru> <52F25589.50503@redhat.com> <52F390E2.5070100@xdel.ru> <52F495E4.6060209@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: Paolo Bonzini , kvm@vger.kernel.org Return-path: Received: from mail-lb0-f171.google.com ([209.85.217.171]:39934 "EHLO mail-lb0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753781AbaBGNHJ (ORCPT ); Fri, 7 Feb 2014 08:07:09 -0500 Received: by mail-lb0-f171.google.com with SMTP id c11so2610551lbj.16 for ; Fri, 07 Feb 2014 05:07:05 -0800 (PST) In-Reply-To: <52F495E4.6060209@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 02/07/2014 12:14 PM, Paolo Bonzini wrote: > Il 06/02/2014 14:40, Andrey Korolyov ha scritto: >> Took and build 1.6.2 and faced a problem - after a couple of bounce >> iterations of migration (1->2->1->2) VM is not able to migrate anymore >> back in a probabilistic manner with an error 'internal error unexpected >> migration status in setup'. Error may disappear over a time, or may not >> disappear at all and it may took a lot of tries in a row to succeed. >> There are no obvious hints with default logging level in libvirt/qemu >> logs and seemingly libvirt is not a cause because "accumulated error >> state" preserves over service restarts. Also every VM is affected, not >> ones which are experiencing multiple migration actions. Error happens on >> 3rd-5th second of the migration procedure, if it may help. > > You need to update libvirt too. > > Paolo Ok, I will do, but looks like libvirt version(1.0.2) in not relevant - it meets criteria set by debian packagers and again, 'broken state' is not relevant to the libvirt state history, it more likely to be qemu/kvm problem.