Getting error "Physical volume /dev/sdX is of different format type (lvm2)" while extending volumegroup.

Solution Unverified - Updated -

Issue

  • Getting error "Physical volume /dev/sdX is of different format type (lvm2)" while extending volumegroup.
# vgextend testvg /dev/sdb
   Physical volume /dev/sdb is of different  format type (lvm2)
  Unable to add physical volume '/dev/sdb' to volume group 'testvg'.

Environment

  • Red Hat Enterprise Linux 6
  • LVM 1 & 2

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