The future part of this that would seem to be useful would be the cluster aspects.
Machine A detects a system fault and is going to shutdown
A tells the cluster manager(s) it has these containers that need to be moved.
The cluster manager finds another machine (machine C and D) and tells Machine A
Machine A and C/Cdo the needed process handover and containers start running on C/D.
Machine A shutsdown.
[Of course this may be possible with Xen, but it would seem to be a heavier solution with the fact that C/D would then need to instantiate and start a new sub-kernel process and every other sub-process (nfs, etc) that was in the old Xen.]
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