virtual machine migration question

virtual machine migration question

[Eric Tessler]

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When you migrate a virtual machine from one machine to another, on the target machine does XEN execute any scripts related to the new virtual machine or is it purely a state transfer between the two machines?
 
Thanks,
Eric
 

		
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Re: virtual machine migration question

[Anthony Liguori]

Eric Tessler wrote:

> When you migrate a virtual machine from one machine to another, on the 
> target machine does XEN execute any scripts related to the new virtual 
> machine or is it purely a state transfer between the two machines?

Yes and no.  The current implementation transfers a configuration file 
that's essentially the state of the domain (represented in 
S-Expressions). Reading in that state will likely result in the 
execution of certain scripts.

I can certainly imagine scenarios where you would want to define a 
script that's associated with the bring-up of a VM and that you would 
need some mechanism to marshall up the script and send it along with the 
VM.  This introduces all sorts of interesting problems though.

Basically, I don't think configuration migration is a solved problem 
yet.  It's something I want to explore in vm-tools.

Regards,
Anthony Liguori

>  
> Thanks,
> Eric
>  
>
> ------------------------------------------------------------------------
> Celebrate Yahoo!'s 10th Birthday!
> Yahoo! Netrospective: 100 Moments of the Web 
> <http://birthday.yahoo.com/netrospective/> 




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