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Re: Re: swsusp done by migration (was Re: [RFC][PATCH 1/5] Virtualization/containers: startup) [message #1519 is a reply to message #1499]

Sat, 11 February 2006 02:38

Sam Vilain
Messages: 73
Registered: February 2006

Member

On Fri, 2006-02-10 at 09:23 +0300, Vasily Averin wrote:
> >> <wishful thinking>
> >> I can see another extension to this functionality. With appropriate
> >> changes it might also be possible to have a container exist across
> >> multiple computers using some cluster code for synchronization and
> >> fencing. The outermost container would be the system boot container,
> >> and multiple inner containers would use some sort of network-
> >> container-aware cluster filesystem to spread multiple vservers across
> >> multiple servers, distributing CPU and network load appropriately.
> >> </wishful thinking>
> > Yeah. If you fudged/virtualised /dev/random, the system clock, etc you
> > could even have Tandem-style transparent High Availability.
> > </more wishful thinking>
> Could you please explain, why you want to virtualize /dev/random?

When checkpointing it is important to preserve all state. If you are
doing transparent highly available computing, you need to make sure all
system calls get the same answers in the clones. So you would need to
virtualise the entropy pool.

There are likely to be dozens of other quite hard problems in the way
first. Like I said, wishful thinking :-).

Sam.

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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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