Why does the df command not show correct values for nfs mounted volumes when served by NAS such as NetApp filer?

Solution Verified - Updated -

Issue

# df -h /test
Filesystem                 Size  Used Avail Use% Mounted on
nfs-server:/share  100G  100G  708M 100% /test

#  du -shx /test
46G     /test

Environment

  • Red Hat Enterprise Linux
  • Network File System
  • NAS (e.g. NetApp Filer)

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