I am working on a Hyper-V migration from Server 2008 R2 SP1 clusters to Server 2012 R2 clusters. I have installed and integrated ESI 3.0 to help identify passthrough disks connected to VMs on the 2008 R2 cluster which must be disconnected before I can perform VM migrations to the 2012 cluster using VMM.
ESI is working fine on the 2008 R2 clusters however I get the following error when trying to connect to the VM tab on the 2012 R2 nodes:
"Retrieval of Virtual Machines failed. Invalid Namespace"
I am thinking this may be related ESI 3.0 not yet supporting Server 2012 R2 but I am not sure as there is no mention of it in the release notes.