From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Smith Subject: Re: [PATCH 00/80] Kernel based checkpoint/restart [v18] Date: Wed, 30 Sep 2009 09:29:23 -0700 Message-ID: <87eipoo0po.fsf@caffeine.danplanet.com> References: <1253749920-18673-1-git-send-email-orenl@librato.com> <20090924154139.2a7dd5ec.akpm@linux-foundation.org> <20090928163704.GA3327@us.ibm.com> <4AC20BB8.4070509@free.fr> <87iqf0o5sf.fsf@caffeine.danplanet.com> <4AC38477.4070007@free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <4AC38477.4070007-GANU6spQydw@public.gmane.org> (Daniel Lezcano's message of "Wed\, 30 Sep 2009 18\:16\:55 +0200") Sender: linux-api-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Daniel Lezcano Cc: "Serge E. Hallyn" , linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, Andrew Morton , torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, mingo-X9Un+BFzKDI@public.gmane.org, xemul-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org List-Id: linux-api@vger.kernel.org DL> If the checkpoint is done from the kernel, why the restart DL> wouldn't be in the kernel too ? I think thus far we have taken the approach of "if it can be done reasonably in userspace, then do it there" right? Setup of the network devices is easy to do in userspace, allows more flexibility from a policy standpoint, and ensures that all existing security checks are performed. Also, migration may be easier if the userspace bits can call custom hooks allowing for routing changes and other infrastructure-specific operations. DL> Is there any documentation about the statefile format I can use if DL> I want to implement myself an userspace CR solution based on this DL> kernel patchset ? See linux-cr/include/linux/checkpoint_hdr.h and user-cr/restart.c. -- Dan Smith IBM Linux Technology Center email: danms-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html