As we have been sharing NFS for windows servers from 8.3.x (shared CDOT arrays) but when it comes to 8.2.x ( BNSF CDOT) there is bug and here is the resolution for similar future requests of BNSF(8.2.3P1) until this is upgraded.
NFS share exports to done as defined by us.
For 8.2.x releases, For all mounts from Windows NFS clients, we require the prefix ROOT-path
mount \\<data-ip-address>\ROOT-path\<junction-path> <drive_letter>
cmd on windows server:
mount \\188.8.131.52\ROOT-path\l122446_bnsf_vol01\data x:
Notes: 'ROOT-path' is recognized by the Data ONTAP NFS server as a special mount request from the Windows NFS client and the server returns '/ROOT-path' in response to EXPORT RPC call. Since 'ROOT-path' is a valid share name for the Windows NFS client, all NFS path-based operations work correctly.
And saw that we were able to create new files/folders, as well as rename them as we expected.