Messages in this thread |  | | | Date | Fri, 25 Aug 2006 12:47:38 +0200 | | From | Pavel Machek <> | | Subject | Re: [RFC][PATCH 2/9] deadlock prevention core |
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Hi!
> > - 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. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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