Red Hat Enterprise Linux reports lunXXX has a LUN larger than allowed by the host adapter, where XXX is a very large number

Solution Unverified - Updated -

Issue

  • can not see the LUNs presented from the SAN
  • getting either error message:
    • "scsi: host 2 channel 0 id 0 lun4194304 has a LUN larger than allowed by the host adapter"
    • "scsi: host 0 channel 0 id 2 lun16643 has a LUN larger than allowed by the host adapter"
  • tried setting lpfc_max_luns to 4200000 and get:
    • "scsi_report_lun_scan: Allocation failure during SCSI scanning, some SCSI devices might not be configured"

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5

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