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Re: [Qemu-devel] Re: [RFC] More robust migration


From: Jamie Lokier
Subject: Re: [Qemu-devel] Re: [RFC] More robust migration
Date: Mon, 23 Feb 2009 03:54:46 +0000
User-agent: Mutt/1.5.13 (2006-08-11)

Charles Duffy wrote:
> Andre Przywara wrote:
> >1. Transfer configuration data. Currently there is no VM configuration 
> >data transferred with the stream. One has to start QEMU/KVM with the 
> >_exact_ same parameters on the other side to allow migration. If there 
> >would be a pseudo-device (transferred first) holding these parameters 
> >(and other runtime dependent stuff like kvm_enabled()) this would ease 
> >migration a lot.
> 
> I presently have code which *relies* on the ability to migrate from one 
> VM to a target with different different backing stores for their disk 
> images (albeit sharing the same contents).
> 
> If this ability were to be removed, that would be unfortunate.

Also, how else are we to migrate running systems from qcow2 - which
should never be used but this wasn't obvious before - to raw? :-)

-- Jamie




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