Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934045AbXEGNxZ (ORCPT ); Mon, 7 May 2007 09:53:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934017AbXEGNxY (ORCPT ); Mon, 7 May 2007 09:53:24 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:4735 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934021AbXEGNxX (ORCPT ); Mon, 7 May 2007 09:53:23 -0400 Date: Thu, 3 May 2007 17:18:43 +0000 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: <20070503171843.GA4355@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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 896 Lines: 25 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. -- (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/