Convert XEN images on SLES 11 to vmdk format used by XenServer 6.2
      On the SLES 11 XEN host, go to: /var/lib/xen/images and find the disk images in raw format.  Then use qemu-img to convert the raw images.
e.g.: 
    qemu-img convert -f raw -O vmdk disk0-clone.raw disk0-clone.vmdk
The conversion took ~30min for a 100G disk image on Liszt.
I used samba on Liszt, and then created a SR on XenServer to access the disk images.  XenServer then retrieved the vmdk thru CIFS import.
    
    
