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    SubjectRe: [RFC][PATCH 2/9] deadlock prevention core

    > > - We expect that the lots-of-dirty-anon-memory-over-swap-over-network
    > > scenario might still cause deadlocks.
    > >
    > > I assert that this can be solved by putting swap on local disks. Peter
    > > asserts that this isn't acceptable due to disk unreliability. I point
    > > out that local disk reliability can be increased via MD, all goes quiet.
    > Putting swap on local disks really messes up the concept of stateless
    > servers. I suppose you can do some sort of swap encryption, but
    > otherwise you need to scrub the swap partition on boot if you
    > re-purpose the hardware. You also then need to do hardware
    > configuration to make sure the local disks are all setup the
    > same way across all server platforms so the common images can
    > boot.

    We should really encrypt swap with random key generated at boot, for
    all the machine. I believe it is possible (with some non-trivial
    setup) today, but it would be nice to do it automagically.
    (cesky, pictures)
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      Last update: 2006-08-25 12:51    [W:0.020 / U:5.500 seconds]
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