Inconsistent handling of vi editors .swp temp files on NAS disks

Issue

• On creating/opening a new file on NAS NFSv4 mounted file system using vi filename.txt generates an attention message:

  E325: ATTENTION
  Found a swap file by the name ".filename.txt.swp"
            owned by: nobody   dated: Fri Jul 22 00:43:06 2022
           [cannot be opened]
  While opening file "a"
  

  After pressing ENTER on the attention message and creating a file, once we save and exit, the temporary/swap files are left behind. If the file is being edited with vi again, new temporary files are created. Each time the file is edited, the number of temporary files grows.

• When running vi as "root", the problem is not seen.