It is like in every Unix NFS – record is added when a client mount and removed when it remounts If you turn off a client without remount – it will stay in the list till the next DM reboot  There is no historical data for mounts – I don’t know any other system that keeps that
How do I list from the cs clients connecting to a particular export. Is this information logged as clients connect ( ie is there a date stamp so we can say client x connected at time y to share z ).
nfs clients list