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swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) [message #1481 is a reply to message #1314]

Wed, 08 February 2006 21:54

Pavel Machek
Messages: 34
Registered: February 2006

Member

Hi!

> > Could you explain a bit why the container ID would need to be
> > virtualized?
>
> As someone said to me a little bit ago, for migration or checkpointing
> ultimately you have to capture the entire user/kernel interface if
> things are going to work properly. Now if we add this facility to
> the kernel and it is a general purpose facility. It is only a matter
> of time before we need to deal with nested containers.
>
> Not considering the case of having nested containers now is just foolish.
> Maybe we don't have to implement it yet but not considering it is silly.
>
> As far as I can tell there is a very reasonable chance that when we
> are complete there is a very reasonable chance that software suspend
> will just be a special case of migration, done complete in user space.
> That is one of the more practical examples I can think of where this
> kind of functionality would be used.

Well, for now software suspend is done at very different level
(it snapshots complete kernel state), but being able to use
migration for this is certainly nice option.

BTW you could do whole-machine-migration now with uswsusp; but you'd
need identical hardware and it would take a bit long...

Pavel
--
Thanks, Sharp!

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[Message index]

		[RFC][PATCH 1/5] Virtualization/containers: startup By: Kirill Korotaev on Fri, 03 February 2006 16:57
		[RFC][PATCH 2/5] Virtualization/containers: UIDs By: dev on Fri, 03 February 2006 17:01
		[RFC][PATCH 3/5] Virtualization/containers: UTSNAME By: dev on Fri, 03 February 2006 17:04
		Re: [RFC][PATCH 3/5] Virtualization/containers: UTSNAME By: ebiederm on Mon, 06 February 2006 08:21
		Re: [RFC][PATCH 3/5] Virtualization/containers: UTSNAME By: dev on Mon, 06 February 2006 08:51
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Fri, 03 February 2006 17:22
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Linus Torvalds on Fri, 03 February 2006 17:49
		Summary: PID virtualization , Containers, Migration By: Hubertus Franke on Fri, 03 February 2006 18:36
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Rik van Riel on Fri, 03 February 2006 18:36
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Sun, 05 February 2006 14:52
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: ebiederm on Mon, 06 February 2006 08:39
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Mon, 06 February 2006 08:58
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: ebiederm on Mon, 06 February 2006 09:19
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Dave Hansen on Mon, 06 February 2006 16:37
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: ebiederm on Mon, 06 February 2006 18:37
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Mon, 06 February 2006 19:30
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Cedric Le Goater on Mon, 06 February 2006 22:40
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: ebiederm on Tue, 07 February 2006 01:57
		swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: Pavel Machek on Wed, 08 February 2006 21:54
		Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: ebiederm on Thu, 09 February 2006 18:20
		Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: Kyle Moffett on Fri, 10 February 2006 00:21
		Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: Sam Vilain on Fri, 10 February 2006 04:31
		Re: Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: vaverin on Fri, 10 February 2006 06:23
		Re: Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: Sam Vilain on Sat, 11 February 2006 02:38
		Re: Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: vaverin on Sat, 11 February 2006 17:29
		Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) By: Kyle Moffett on Fri, 10 February 2006 08:29
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Nigel Cunningham on Fri, 10 February 2006 05:40
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Dave Hansen on Fri, 03 February 2006 18:34
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Jeff Garzik on Fri, 03 February 2006 18:55
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Hubertus Franke on Fri, 03 February 2006 19:18
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Hubertus Franke on Fri, 03 February 2006 19:56
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Greg KH on Fri, 03 February 2006 20:19
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Sun, 05 February 2006 15:10
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Sun, 05 February 2006 15:05
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Dave Hansen on Mon, 06 February 2006 16:35
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Mon, 06 February 2006 16:50
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Linus Torvalds on Mon, 06 February 2006 16:56
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Mon, 06 February 2006 17:19
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Sam Vilain on Tue, 07 February 2006 00:28
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Tue, 07 February 2006 12:19
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Sam Vilain on Tue, 07 February 2006 22:21
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Mon, 20 February 2006 11:54
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Linus Torvalds on Fri, 03 February 2006 17:15
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Hubertus Franke on Fri, 03 February 2006 20:34
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Sun, 05 February 2006 15:11
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Hubertus Franke on Sun, 05 February 2006 15:39
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Mon, 06 February 2006 09:06
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Cedric Le Goater on Mon, 06 February 2006 22:31
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Tue, 07 February 2006 12:25
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: Benjamin Herrenschmid on Mon, 06 February 2006 00:56
		Re: Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: dev on Mon, 06 February 2006 09:01
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: ebiederm on Mon, 06 February 2006 08:31
		Re: [RFC][PATCH 1/5] Virtualization/containers: startup By: ebiederm on Fri, 10 February 2006 06:01

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