On Feb 09, 2006, at 13:20, Eric W. Biederman wrote:
Pavel Machek <[email protected]> writes:
Well, for now software suspend is done at very different level (it
snapshots complete kernel state), but being able to use migration
for this is certainly nice option.
BTW you could do whole-machine-migration now with uswsusp; but
you'd need identical hardware and it would take a bit long...
Right part of the goal is with doing it as we are doing it is that
we can define what the interesting state is.
Replacing software suspend is not an immediate goal but I think it
is a worthy thing to target. In part because if we really can rip
things out of the kernel store them in a portable format and
restore them we will also have the ability to upgrade the kernel
with out stopping user space applications...
But being able to avoid the uninteresting parts, and having the
policy complete controlled outside the kernel are the big wins we
are shooting for.
<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>
Cheers,
Kyle Moffett
--
I have yet to see any problem, however complicated, which, when you
looked at it in the right way, did not become still more complicated.
-- Poul Anderson
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