The data is already there. If you are familiar with modifying / extending CMK checks then it will be possible to get already this output.
If you create an local check then you will get only the graph for the level. Trend graph is part of the filesystem check and not created for local checks.
In my systems it’s most times that the real volume (what is exporting the NFS) is monitored on some host and i get all these information’s there. On the host with the mounted NFS i only need to know if the volume is available or not.