Re: [Xen-users] Live migration problem

[Pim van Riezen <pi@xxxxxxxxxxxx>]

On Jan 10, 2008, at 10:53 , Alain BARTHE wrote:

> Hi,
>
> We have a dozen of dom0, running about 50 domUs. All domUs have  
> disks on LVM, disks are located on a SAN, so it is very easy to live  
> migrate simply by attaching a domU disk on two dom0s.
> All dom0s run CentOS50 with Xen 3.0.3.
>
> We tried many time to migrate in vitro some little domUs and it  
> worked perfectly.
> Now we really need to migrate a big domU (big by its RAM: 3.6 GB)  
> and we have the following error (log on the from dom0):
Your problem is probably that live migration requires Xen to create a  
shadow copy of the active RAM of your DomU, so you effectively need to  
have RAM(DomU) free on the source and 2*RAM(DomU) on the target Dom0.
Cheers,
Pi


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