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xen-devel
Re: [Xen-devel] [PATCH] Blktap: Userspace file-based image support.(RFC)
> This is the exact situation I had in mind. I think it would be
> extremely cool to have a peer-to-peer block migration mechanism, which
> would allow the convenience of files for migration and the speed of
> block devices. You could even have a method for migrating block
> images between machines, independent of a migration. Imagine
> something like:
>
> lvmcp /dev/vols/foo othermachine:/dev/vols
Yes, that could even be nice and generic to other use cases, which is always a
good sign and a good way of getting extra developers.
> I think that would be neat. It's rather straightforward too, I
> think.
Another thing I've always fancied is the ability to keep a virtual machine's
memory and disk images on two machines in close-sync by continuously
trickling diffs... This would be used in cases (e.g. desktop migration to a
mobile device, emergency server relocation) where you do have warning that a
migration is required but you want really low latency (e.g. before your UPS
runs out, so you can pick up your laptop and run to a meeting, etc, etc).
Cheers,
Mark
--
Dave: Just a question. What use is a unicyle with no seat? And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!
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