We can list the VM’s by running

xe vm-list

You can export a VM using either the name of the VM or by using the uuid.  The above command list both so you can use which ever one you want.

You will also need to shutdown the VM your going to export.

xe vm-shutdown vm=ubuntu

Export by Name
The name of the VM is”ubuntu”.

xe vm-export vm=ubuntu filename=/backup/ubuntu.xva

Export using uuid

xe vm-export uuid=b24dcd65-5e12-4576-2f39-46ecab9362ab filename=/backup/ubuntu.xva

Importing VM

xe vm-import vm=centos5 filename=/backup/ubuntu.xva