Re: Checkpoint/restart (was Re: [PATCH 0/4] - v2 - Object creationwith a specified id)

[Oren Laadan]

Dave Hansen wrote:
> On Thu, 2008-04-24 at 11:00 +0400, Kirill Korotaev wrote:
> > Yeah... we talked with Andrew yesterday. He mostly agrees with a black
> > box.
> > He also said an interesting idea, that if you need compatibility
> > between the kernels (like we for example, support for migration from
> > 2.6.9 to 2.6.18 in OpenVZ)
> > you can do image conversion in user-space...
>
> That sounds compelling to me.  I'm definitely willing to explore it.

Filtering/converting in user-space has long been part of zap: used to
be able to migrate between both minor and major versions of the kernel
(always upwards, of course).

In fact, I already proposed it as part of the original thread that led
eventually to the patch in question:
https://lists.linux-foundation.org/pipermail/containers/2008-February/009849.html

The need to be able to specify a desired ID (from user-space and/or from
in-kernel) remains.

Oren.

> Any thoughts on what we should start with?  What can we get merged, most
> easily?
>
> -- Dave
>
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