Question : Hyper-V R2 virtual machine storage on ISCSI SAN affecting live migration

Here's my setup in a nutshell.  I have two identical Dell R710 servers running Hyper-V R2.  I have a Equallogic PS4000X SAN.  Each server has 8 NIC ports.  I have CSV setup and Live Migration has been working fine.  

I can create a VM and store it in the CSV and migrate it back and forth between the two servers.  The next step is to create a volume on the Equallogic to store the data for the VM.  I can create the volume and attach it to the VM, format the drive, copy data to it.  To do this I dedicated one NIC port on each server for accessing the data volume on the SAN.  I created a virtual network on each Hyperv-V server naming it 'SAN Access', external, selecting the exact same physical NIC and port from each server.  I left the 'Allow management OS to share this adapter' unchecked.  

The VM accesses data off the drive just fine.  When I try to do a Live Migration it goes through 100% of the migration but then comes back and says it has failed.

I get a System Log message event id 21502 "Virtual machine 2003test" live migration did not succeed at the source.

I'm not sure that that means...........

Any ideas on why once I add a SAN drive it no longer will live migrate?

Answer : Hyper-V R2 virtual machine storage on ISCSI SAN affecting live migration

Before adding the volume you were able to LM the VM between the nodes?

can you test this and tell me the results.
1. Shutdown the VM on node where is it running, let me call it NodeA and try to live migrate it to NodeB and see if it succeeds. If it does try bringing it up on NodeB, see it succeeds.
2.Try to quick migrate the VM from NodeA to NodeB and see if it succeeds.