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I'm tossing around the idea of creating a sort of "VDI" setup with Xen. One thing that I would like to do in this scenario is "checkpoint" the user's VM at a certain interval so that if something bad happens they can go right back to the latest point time - maybe a half-hour earlier or something like that. I was trying to use "xm save -c <Domain> <File>" to do this, but the domain pauses while the contents of memory are saved off to disk. I was wondering if anyone knows of a way to "checkpoint" without pausing the domain? I can't do something like an hourly checkpoint if the domain pauses every hour - the users on the domUs would kill me. Is "seamless checkpointing" something that's being developed, something that can be done another way, or something I should just give up on now?
Thanks - Nick
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