Il 03/03/2014 13:55, Kevin Wolf ha scritto:
> > Due to memory-modifications may happen in kvm, qemu, or vhost, the key-part is how we
> > can provide common page-modify-tracking-and-saving api, we completed a prototype by
> > simply add modified-page tracking/saving function in qemu, and it seems worked fine.
>
> Yes, this is the tricky part. To be honest, I think this is the reason
> no one has submitted patches - it's a hard task and the win isn't that
> great (you can already migrate to file).
So why don't we simply reuse the existing migration code?
I think this is different in the same way that block-backup and
block-mirror are different. Huangpeng's proposal would let you make a
consistent snapshot of disks and RAM.
Paolo
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