Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system callfiltering

[Ingo Molnar]

* Valdis.Kletnieks@xxxxxx <Valdis.Kletnieks@xxxxxx> wrote:

> On Thu, 26 May 2011 20:36:35 +0200, Ingo Molnar said:
> 
> > I suspect we are really offtopic here, but an initial rsync, then 
> > stopping the guest, final rsync + restart the guest at the target 
> > would work with minimal interruption.
> 
> Actually, after you kick off the migrate, you really want to be 
> tracking in real time what pages get dirtied while you're doing the 
> initial copy, so that the second rsync doesn't have to walk through 
> the file finding the differences.  But that requires some extra 
> instrumentation.

Yeah, and that's how socket based live migration works - it's 
completely seemless.

But note that the rsync re-scan should not be an issue: both the 
source and the target system will obviously have a *lot* more RAM 
than the guest RAM image size.

Thanks,

	Ingo
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