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    SubjectRe: [RFC v7][PATCH 2/9] General infrastructure for checkpoint restart

    Dave Hansen wrote:
    > On Mon, 2008-10-27 at 07:03 -0400, Oren Laadan wrote:
    >>> In our implementation, we simply refused to checkpoint setid
    >> programs.
    >>
    >> True. And this works very well for HPC applications.
    >>
    >> However, it doesn't work so well for server applications, for
    >> instance.
    >>
    >> Also, you could use file system snapshotting to ensure that the file
    >> system view does not change, and still face the same issue.
    >>
    >> So I'm perfectly ok with deferring this discussion to a later time :)
    >
    > Oren, is this a good place to stick a process_deny_checkpoint()? Both
    > so we refuse to checkpoint, and document this as something that has to
    > be addressed later?

    why refuse to checkpoint ?

    if I'm root, and I want to checkpoint, and later restart, my sshd server
    (assuming we support listening sockets) - then why not ?

    we can just let it be, and have the restart fail (if it isn't root that
    does the restart); perhaps add something like warn_checkpoint() (similar
    to deny, but only warns) ?

    Oren.




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