Thanks for the info on the generic "disable SMBv1" warning.
As of today (7/12/2017) it is not completely possible to disable SMBv1 for client access on any version of ONTAP other than 9.2. However, there are plans to add that capability to an existing LTS 9.x release and an upcoming 7-Mode release as well.
Does anyone know of a way to track what clients are making SMB1 connections? We would prefer to idetify them and remove them from the environment rather than just disabling SMB1 on the NetApp and breaking any old printers that are still using it. The cifs session command shows the clients, but it is a point in time, so if they are not actively connected when the command is run, they will not show up.
cifs session show -protocol-version smb1 -fields address
I attempted to use the statistics command, but it only shows me numbers of connections (from what I could find), not the specific clients that the connections were coming from.
If this is still an outstanding question, you can always perform a packet capture on a filer and review in wireshark. This would answer that questions. Check the knowledgebase on what the commands are to do this, but unless your using a really old OS, you should not have to worry about this.