>The best proposal I've heard so far was to use MOSIX to do live job
>migration between machines, and then upgrade the kernel like normal.
>In the end, it is the jobs that are running on the kernel, and not
>the kernel or the individual machine that are the most important. One
>person pointed out that there is a single point of failure in the
>MOSIX "stub" machine, which doesn't help you in the end (how do you
>update the kernel there?). If you can figure a way to enhance MOSIX
>to allow migrating the MOSIX "stub" processes to another machine, you
>will have solved your problem in a much easier way, IMHO.
If you then think of using VMWare or S/390 style methods of running multiple
copies of Linux on a single system you can now consider migrating processes
to a new kernel on the same system.
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