the app library for HDF5 has an issue with NFSv4.. it can be worked around, but our fear is that it shows up in another application
the result is "I cant get a file lock" (this was tested on Ganesha)

Articles.
https://serverfault.com/questions/972623/parallel-mpi-file-open-failed-on-nfsv4-but-ran-on-nfsv3
https://forum.hdfgroup.org/t/hdf5-files-on-nfs/3985/8

does this sound familiar to anyone?

Installed Versions:
gpfs.nfs-ganesha-gpfs-2.7.5-ibm057.00.el7.x86_64
gpfs.nfs-ganesha-utils-2.7.5-ibm057.00.el7.x86_64
gpfs.nfs-ganesha-2.7.5-ibm057.00.el7.x86_64


noob here.. please forgive me if i've posted in the wrong place.
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