Multipath device shows only one path when LUN has multiple paths from SAN

Solution Verified - Updated -

Issue

  • One node of a 3-node-cluster shows one single sub-path for each multipath device and newly added storage disks do not form multipath maps though redundant paths are physically available for all the LUNs.

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6

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