One EMC VMAX storage path is unable to detect a newly assigned device in Red Hat Enterprise Linux 4

Solution Verified - Updated -

Issue

We are currently doing storage migration exercise to EMC VMAX storage and we have experienced this issue whereby after assigning a new device, only one path is visible. However, the other machine which is pair of this problematic one and totally identical configuration doesn't have the issue. Based on EMC onsite engineer analysis, the HBA can see the two path but somehow the OS seems not picking up.

Environment

  • Red Hat Enterprise Linux 4.4
  • HP Qlogic drivers
  • EMC VMAX storage

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