From mboxrd@z Thu Jan  1 00:00:00 1970
From: George Dunlap <dunlapg@umich.edu>
Subject: Re: [PATCH RFC] Live migration for VMs with QEMU backed
 local storage
Date: Mon, 26 Jun 2017 11:06:31 +0100
Message-ID: <CAFLBxZaPNAD74jCwaH6YdSsmEQag_MRGY3-Pf5Rdd5qqx3KP4g@mail.gmail.com>
References: <1498203740-7809-1-git-send-email-bruno.alvisio@gmail.com>
 <20170623080334.erncnpoy24dp6xka@dhcp-3-128.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
Received: from mail6.bemta6.messagelabs.com ([193.109.254.103])
 by lists.xenproject.org with esmtp (Exim 4.84_2)
 (envelope-from <dunlapg@gmail.com>) id 1dPQuh-0007vm-8p
 for xen-devel@lists.xenproject.org; Mon, 26 Jun 2017 10:06:35 +0000
Received: by mail-qk0-f196.google.com with SMTP id p21so13826080qke.0
 for <xen-devel@lists.xenproject.org>; Mon, 26 Jun 2017 03:06:33 -0700 (PDT)
In-Reply-To: <20170623080334.erncnpoy24dp6xka@dhcp-3-128.uk.xensource.com>
List-Unsubscribe: <https://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <https://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Errors-To: xen-devel-bounces@lists.xen.org
Sender: "Xen-devel" <xen-devel-bounces@lists.xen.org>
To: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= <roger.pau@citrix.com>
Cc: Bruno Alvisio <bruno.alvisio@gmail.com>, dave@recoil.org, Wei Liu <wei.liu2@citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>, xen-devel <xen-devel@lists.xenproject.org>
List-Id: xen-devel@lists.xenproject.org
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