From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756049Ab3AVVQg (ORCPT ); Tue, 22 Jan 2013 16:16:36 -0500 Received: from g1t0027.austin.hp.com ([15.216.28.34]:17975 "EHLO g1t0027.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751789Ab3AVVQe (ORCPT ); Tue, 22 Jan 2013 16:16:34 -0500 Message-ID: <50FF01AB.4050401@hp.com> Date: Tue, 22 Jan 2013 13:16:27 -0800 From: Rick Jones User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121011 Thunderbird/16.0.1 MIME-Version: 1.0 To: Andrey Vagin CC: netdev@vger.kernel.org, criu@openvz.org, linux-kernel@vger.kernel.org, "David S. Miller" , Alexey Kuznetsov , James Morris , Hideaki YOSHIFUJI , Patrick McHardy , Eric Dumazet , Yuchung Cheng , Neal Cardwell , Pavel Emelyanov , Dave Jones , Michael Kerrisk Subject: Re: [PATCH net-next] tcp: add ability to set a timestamp offset References: <1358887953-28665-1-git-send-email-avagin@openvz.org> In-Reply-To: <1358887953-28665-1-git-send-email-avagin@openvz.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/22/2013 12:52 PM, Andrey Vagin wrote: > If a TCP socket will get live-migrated from one box to another the > timestamps (which are typically ON) will get screwed up -- the new > kernel will generate TS values that has nothing to do with what they > were on dump. The solution is to yet again fix the kernel and put a > "timestamp offset" on a socket. Is there a chance a connection can be moved more than once within the "lifetime" of a given timestamp value? rick jones