Hi,
This issue may caused by large SMB2 packets no longer be able to get through between the node and the CSV owner node over the CSV redirected network
Was due to the systems(with HP network cards) being configured for Jumbo frames and Large Send Offload.
The Jumbo frames were not fully configured correctly on all the relevant switches, such that LSO could not send the large (SMB2) packet
(was originally working because the OS has detected that it needed to fragment the packets. Somehow it decided to let the NIC do it after the move and then CSV redirected network communication got blocked).
Please make sure the network can properly handle jumbo frames or disable Large Send Offload on the NIC.
For more information, please refer to:
Best Regards,
Daniel