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Re: [RFC][PATCH 1/5] Virtualization/containers: startup [message #1507 is a reply to message #1314]

Fri, 10 February 2006 05:40

Nigel Cunningham
Messages: 3
Registered: February 2006

Junior Member

Hi.

On Tuesday 07 February 2006 04:37, Eric W. Biederman wrote:
> Dave Hansen <haveblue@us.ibm.com> writes:
> > On Mon, 2006-02-06 at 02:19 -0700, Eric W. Biederman wrote:
> >> That you placed the namespaces in a separate structure from
> >> task_struct.
> >> That part seems completely unnecessary, that and the addition of a
> >> global id in a completely new namespace that will be a pain to
> >> virtualize
> >> when it's time comes.
> >
> > 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.

Am I missing something? I though migration referred only to userspace
processes. Software suspend on the other hand, deals with the whole system,
of which process data/context is only a part.

Regards,

Nigel

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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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