linux-kernel - Re: RFC: Self-snapshotting in Linux

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Message-ID: <55f6199c0804160921i55cc0fe7ycf45cb64933b84ad@mail.gmail.com>
Date:	Wed, 16 Apr 2008 12:21:38 -0400
From:	Disconnect <dc.disconnect@...il.com>
To:	"Peter Teoh" <htmldeveloper@...il.com>
Cc:	"Alan Jenkins" <alan-jenkins@...fmail.co.uk>,
	"Scott Lovenberg" <scott.lovenberg@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: RFC: Self-snapshotting in Linux

On Wed, Apr 16, 2008 at 11:06 AM, Peter Teoh <htmldeveloper@...il.com> wrote:
>  This list is awesome.   After I read up on this kexec-based hibernation thing:
>
>  http://kerneltrap.org/node/11756
>
>  I realized it is about the same idea.   Some differences though:
>
>  My original starting point was VMWare's snapshot idea.   Drawing an
>  analogy from there, the idea is to freeze and restore back entire
>  kernel + userspace application.   For integrity reason, filesystem
>  should be included in the frozen image as well.
[snip]

It sounds like what you want is the existing ghost setup plus
swsusp/tuxonice.  Hibernate the system, which saves out your userspace
and kernel state, do the ghost save, then when you restore it'll boot
up right where it left off.

http://www.tuxonice.net
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