From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Denis V. Lunev" Subject: Re: [Qemu-devel] qemu : rbd block driver internal snapshot and vm_stop is hanging forever Date: Mon, 9 Nov 2015 10:19:39 +0300 Message-ID: <5640490B.5030700@parallels.com> References: <310812067.2785504.1447038645014.JavaMail.zimbra@oxygem.tv> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from relay.parallels.com ([195.214.232.42]:40649 "EHLO relay.parallels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750785AbbKIHTw (ORCPT ); Mon, 9 Nov 2015 02:19:52 -0500 In-Reply-To: <310812067.2785504.1447038645014.JavaMail.zimbra@oxygem.tv> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Alexandre DERUMIER , ceph-devel , qemu-devel On 11/09/2015 06:10 AM, Alexandre DERUMIER wrote: > Hi, > > with qemu (2.4.1), if I do an internal snapshot of an rbd device, > then I pause the vm with vm_stop, > > the qemu process is hanging forever > > > monitor commands to reproduce: > > > # snapshot_blkdev_internal drive-virtio0 yoursnapname > # stop > > > > > I don't see this with qcow2 or sheepdog block driver for example. > > > Regards, > > Alexandre > this could look like the problem I have recenty trying to fix with dataplane enabled. Patch series is named as [PATCH for 2.5 v6 0/10] dataplane snapshot fixes Den