From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:37784) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tox2S-00061q-SR for qemu-devel@nongnu.org; Sat, 29 Dec 2012 09:05:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Tox2R-0001tQ-Qh for qemu-devel@nongnu.org; Sat, 29 Dec 2012 09:05:24 -0500 Received: from mail.profihost.ag ([85.158.179.208]:50610) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tox2R-0001qp-H0 for qemu-devel@nongnu.org; Sat, 29 Dec 2012 09:05:23 -0500 Message-ID: <50DEF89F.2090203@profihost.ag> Date: Sat, 29 Dec 2012 15:05:19 +0100 From: Stefan Priebe MIME-Version: 1.0 References: <50DCC3AF.7020802@profihost.ag> <50DDDCB2.1060403@redhat.com> <50DDED1C.2020208@profihost.ag> <50DEF785.7030706@redhat.com> In-Reply-To: <50DEF785.7030706@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] setting migrate_downtime results in halted vm (qemu 1.3) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: qemu-devel , Alexandre DERUMIER , Juan Quintela Hi Paolo, Am 29.12.2012 15:00, schrieb Paolo Bonzini: >> i cherry picked that one on top of 1.3 sadly it does not help. VM halts, >> monitor socket is no longer available kvm process is running with 100% >> CPU on source side. > > Can you please test master and, if it works, bisect it in reverse? > (That is, mark "bad" if it works, "good" if it fails). It's working fine with qemu master. I walked then through the bug patchset here: http://www.mail-archive.com/qemu-commits@nongnu.org/msg02028.html and backported them step by step to qemu 1.3. It starts working to me after the first 22 patches (after introducing the new mutex and threading for writes). Greets, Stefan