[Qemu-devel] Re: Live migration - exec: support to be reintroduced?

[Charles Duffy]

Anthony Liguori wrote:
> Daniel P. Berrange wrote:
> > This isn't for snapshotting, so checkpointing of storage is unneccessary.
> > This is just straight save+restore, akin to hibernate-to-disk for a 
> > physical machine.   
>
> This is a fundamentally broken concept.  You cannot just save the 
> guest's memory state without saving the current state of the storage.

Oh -- let me follow up on how this works in libvirt:

The "save" and "restore" commands shut down and start the VM when 
invoked; consequently, no storage changes are made while the VM is down. 
Restoring more than once off the same "save" is not an intended use case.