Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933646AbXEGMsX (ORCPT ); Mon, 7 May 2007 08:48:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933663AbXEGMsX (ORCPT ); Mon, 7 May 2007 08:48:23 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:55580 "EHLO amd.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933646AbXEGMsW (ORCPT ); Mon, 7 May 2007 08:48:22 -0400 Date: Mon, 7 May 2007 14:48:18 +0200 From: Pavel Machek To: David Lang Cc: Nigel Cunningham , "Rafael J. Wysocki" , Linus Torvalds , Pekka J Enberg , LKML Subject: Re: Back to the future. Message-ID: <20070507124818.GA18209@elf.ucw.cz> References: <1177567481.5025.211.camel@nigel.suspend2.net> <200704280041.17617.rjw@sisk.pl> <200704280145.26253.rjw@sisk.pl> <1177718250.4737.222.camel@nigel.suspend2.net> <20070503171843.GA4355@ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.11+cvs20060126 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1178 Lines: 32 Hi! > >>nobody is suggesting that you leave peocesses running > >>while you do the snapshot, what is being proposed is > >> > >>1. pause userspace (prevent scheduling) > >>2. make snapshot image of memory > >>3. make mounted filesystems read-only (possibly with > >>snapshot/checkpoint) > >>4. unpause > >>5. save image (with full userspace available, including > >>network) > > > >Including network? Your tcp peers will be really confused, then, if > >you ACK packets then claim you did not get them. No, you do not want > >to start network. > > anyone who is doing a hibernate or suspend who expect all the network > connections to be working afterwords is dreaming or smokeing >something. Really? It works today... if the suspend is short enough. And that's how it should be. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/