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[Xen-users] Live Migration and CoW

  • To: <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "Felipe Franciosi" <ozzy@xxxxxxxxxxxxx>
  • Date: Thu, 16 Mar 2006 14:08:13 -0300
  • Delivery-date: Thu, 16 Mar 2006 17:07:30 +0000
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AcZJHDOMCmxdiWz/SkepEs2xQ2x09Q==

Hello there,

I haven't used the LiveCD 3.0 yet, but I'm downloading it in order to give
this feature a try: I've been told that it's only possible to do Live
Migration if both hosts (dom0) can 'see' the disks of the VM (by NFS, for

Then I heard that the Xen shipped with the LiveCD can migrate CoW
filesystems: I can create a base readonly image, which every dom0 will host
a copy, and then migrate the VMs without the need for sharing it's CoW
device or swap area through NFS. Is that correct?

If so, what are my options for CoW systems without the LiveCD
(LVM/Union/...) ???


 Felipe Franciosi                      +55-51-91230557
 CPAD/HP/PUCRS - Centro de Pesquisa em Alto Desempenho
 http://www.cpad.pucrs.br/          ozzy@xxxxxxxxxxxxx
 Porto Alegre, RS - Brazil

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