I have been using the installation documentation to upgrade an existing oes2 sp2 server to oes 11 sp 1. I have established an NFS share on the xen host server and have tested that i can mount the nfs share to another server. That is done correctly.

I shutdown the vm and select create new virtual machine in the virt mngr. I then select the oes 11 type and then select that i want to upgrade an existing vm. I enter the path as nfs:\\ipaddress\nds directory\ . When I select to upgrade I receive an error that says the source is unusable. the source is an iso file on the nfs share.

Any suggestions.