FlexArray backend 3rd party storage panic causes aggregate and disk unknown

• Backend EMC UNITY 600 panics and failover event cause ONTAP to display disks as broken 
• disk show displays LUNs as container-type unknown
• Aggregate status unknown
• No disks are listed in affected aggregate in storage aggregate show
• Unable to unfail unknown disks
• Alert:  ARRAY LUN CONNECTED USING ONLY ONE PATH
• No Bad Volinfo or checkCondition found in EMS
• storage show <unknown disk label> indicates active optimized and un-optimized paths are mixed up between nodes.

Acc Use
--- ---
AO  INU  
AO  INU  
ANO RDY
ANO RDY
AO  INU
AO  INU
AO  RDY
AO  RDY

• Expected:

Acc Use
--- ---
ANO RDY
ANO RDY
AO  INU
AO  INU
ANO RDY
ANO RDY
AO  INU
AO  INU