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    SubjectRe: [RFC v13][PATCH 00/14] Kernel based checkpoint/restart
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    On Thu, 2009-02-12 at 14:57 -0800, Dave Hansen wrote:
    > > Also, what happens if I checkpoint a process in 2.6.30 and restore it in
    > > 2.6.31 which has an expanded idea of what should be restored? Do your
    > > file formats handle this sort of forward compatibility or am I
    > > restricted to one kernel?
    >
    > In general, you're restricted to one kernel. But, people have mentioned
    > that, if the formats change, we should be able to write in-userspace
    > converters for the checkpoint files.

    I mentioned this because it seems like a key use case is upgrading
    kernels out from under long-lived applications.

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