df is not showing all mounted filesystems

Solution In Progress - Updated -


  • Running df does not show all mounted filesystems.
  • Ex:
# df -Ph
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/rootvg-rootvol  3.8G  1.7G  2.0G  45% /
  • /proc/mounts shows everything mounted fine.


  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

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