Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752326AbZCNAOS (ORCPT ); Fri, 13 Mar 2009 20:14:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751314AbZCNAOA (ORCPT ); Fri, 13 Mar 2009 20:14:00 -0400 Received: from mail-fx0-f176.google.com ([209.85.220.176]:38871 "EHLO mail-fx0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751225AbZCNAN6 (ORCPT ); Fri, 13 Mar 2009 20:13:58 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=oUQbehZm10Y+LnkHGiEbhUujrfLLUXjalJTHS54gq+TNGh8Vr9CMFVsnn+q47XMUAg /uhOKxwnEUDoQUil/kmvWqVT7dLByudoaSOLtxVMyL7kPGkHPbw7nMjoz8DlaFQr6O8o o93tOKFqZYdRXMmPAa5RAV5VlWI/KoiIqHwX8= Date: Sat, 14 Mar 2009 03:20:59 +0300 From: Alexey Dobriyan To: Linus Torvalds Cc: Sukadev Bhattiprolu , Ying Han , "Serge E. Hallyn" , linux-api@vger.kernel.org, containers@lists.linux-foundation.org, hpa@zytor.com, linux-kernel@vger.kernel.org, Dave Hansen , linux-mm@kvack.org, viro@zeniv.linux.org.uk, mingo@elte.hu, mpm@selenic.com, Andrew Morton , xemul@openvz.org, tglx@linutronix.de Subject: Re: How much of a mess does OpenVZ make? ;) Was: What can OpenVZ do? Message-ID: <20090314002059.GA4167@x200.localdomain> References: <20090310215305.GA2078@x200.localdomain> <49B775B4.1040800@free.fr> <20090312145311.GC12390@us.ibm.com> <1236891719.32630.14.camel@bahia> <20090312212124.GA25019@us.ibm.com> <604427e00903122129y37ad791aq5fe7ef2552415da9@mail.gmail.com> <20090313053458.GA28833@us.ibm.com> <20090313193500.GA2285@x200.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1199 Lines: 28 On Fri, Mar 13, 2009 at 02:01:50PM -0700, Linus Torvalds wrote: > > > On Fri, 13 Mar 2009, Alexey Dobriyan wrote: > > > > > > Let's face it, we're not going to _ever_ checkpoint any kind of general > > > case process. Just TCP makes that fundamentally impossible in the general > > > case, and there are lots and lots of other cases too (just something as > > > totally _trivial_ as all the files in the filesystem that don't get rolled > > > back). > > > > What do you mean here? Unlinked files? > > Or modified files, or anything else. "External state" is a pretty damn > wide net. It's not just TCP sequence numbers and another machine. I think (I think) you're seriously underestimating what's doable with kernel C/R and what's already done. I was told (haven't seen it myself) that Oracle installations and Counter Strike servers were moved between boxes just fine. They were run in specially prepared environment of course, but still. -- 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/