GFS2 filesystem failes to mount with error - 'different fs appears to exist with same name'

Solution Verified - Updated -

Issue

  • mount command is failing to mount GFS2 filesystem and displays following error message:

    $ mount /dev/vg1/gfs_lv2  /gfs_mnt2
different fs appears to exist with the same name
error mounting lockproto lock_dlm

Environment

  • Red Hat Enterprise Linux Server 6 (with Resilient Storage Add On)
  • Global Filesystem 2 (GFS2)

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