From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Serge E. Hallyn" Subject: Re: Checkpoint/Restart mini-summit Date: Wed, 16 Jul 2008 21:27:29 -0500 Message-ID: <20080717022729.GC21726@us.ibm.com> References: <487C80C9.2040105@fr.ibm.com> <20080716151530.GA26496@us.ibm.com> <20080716193538.GA28393@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: "Eric W. Biederman" Cc: Linux Containers , ccr-Gr7syQlKEaBFgBK04Mzu/R2eb7JE58TQ@public.gmane.org, Daniel Lezcano List-Id: containers.vger.kernel.org Quoting Eric W. Biederman (ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org): > "Serge E. Hallyn" writes: > > > Quoting Eric W. Biederman (ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org): > >> "Serge E. Hallyn" writes: > >> > >> > Right, the whole point of Daniel including a 'reading list' was just so > >> > that we can avoid wasting time discussing existing implementations. So > >> > he wasn't suggesting that we would be discussing those in detail, in > >> > fact quite the opposite. > >> > >> Right however he was suggesting we discuss how to implement it without > >> agreeing on basic principles. Maybe I'm wrong and all of the different > >> development groups have a common idea of what needs to be done but > >> I would be surprised if that were the case. > > > > IMO recent threads have clearly proven that you're right about basic > > principles. Question is what is the right level to start at first, and > > how do we go about reaching concensus? I.e. is the first question > > whether we should do a fully in-kernel checkpoint and restart vs > > entirely userspace vs a mix, or is there another place we should start? > > Where all good kernel features start. With the necessary mechanisms in > the kernel and the policy in user space. > > If we want to replay all of the user space actions to create the > environment at the time of the checkpoint we already have all of the > kernel support we need as the applications go to their current state > using current system calls. > > I think we want something a bit more efficient. > > > It sounds like you have some good ideas in any case on where to start so > > I'm glad you'll be there :) > > > Will we have a white board or a large piece paper or something we can draw > on and talk about? > > Eric Hi C., I'm sorry after all the emails I'm not straight on what we're actually getting. We have a U-shaped room, but do we have a blackboard or whiteboard? Is there a speakerphone? Wireless or at least wired internet? thanks, -serge