Read Only Directory?

Hi All, 

 

I will begin a data migration for a cluster that has shares available via SMB and NFS.

Is there a way to make the share into read-only without touching NFS or SMB permissions?

I need permissions to stay in tact for migration. 

I was thinking of something similar to what SyncIQ does, without necessarily using SyncIQ.

How can I enable and disable that read-only state?

 

thanks!