Why additional paths were created by dm-multipath or powerpath for a LUN assigned from storage?

Solution Verified - Updated -

Issue

  • When a LUN is assigned from storage, additional paths were seen.
  • Why do I see more path in multipath while the expected paths are only 2?

Environment

  • Red Hat Enterprise Linux
  • Device mapper multipath
  • Powerpath
  • SAN connected storage

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