From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wei Liu <wei.liu2@citrix.com>
Subject: Re: [PATCH v10 24/31] Support colo mode for qemu disk
Date: Wed, 2 Mar 2016 15:04:42 +0000
Message-ID: <20160302150442.GH1657@citrix.com>
References: <1456109555-28299-1-git-send-email-wency@cn.fujitsu.com>
 <1456109555-28299-25-git-send-email-wency@cn.fujitsu.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
Content-Disposition: inline
In-Reply-To: <1456109555-28299-25-git-send-email-wency@cn.fujitsu.com>
List-Unsubscribe: <http://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: <http://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: Wen Congyang <wency@cn.fujitsu.com>
Cc: Lars Kurth <lars.kurth@citrix.com>, Changlong Xie <xiecl.fnst@cn.fujitsu.com>, Wei Liu <wei.liu2@citrix.com>, Ian Campbell <ian.campbell@citrix.com>, Andrew Cooper <andrew.cooper3@citrix.com>, Jiang Yunhong <yunhong.jiang@intel.com>, Ian Jackson <ian.jackson@eu.citrix.com>, xen devel <xen-devel@lists.xen.org>, Dong Eddie <eddie.dong@intel.com>, Gui Jianfeng <guijianfeng@cn.fujitsu.com>, Shriram Rajagopalan <rshriram@cs.ubc.ca>, Yang Hongyang <hongyang.yang@easystack.cn>
List-Id: xen-devel@lists.xenproject.org
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