IBM 2145 SAN and NVMe over Fibre Channel requires a dm-multipath prio change to provide resilient fail-over

Solution In Progress - Updated -

Issue

  • During fabric failover events on IBM 2145 SAN serving NVMe over Fibre Channel devices, the system was not able to cleanly fail-over and recover.

Environment

  • RHV hypervisor cluster (RHV 4.4 SP1)
  • IBM 2145 serving NVMe over Fibre Channel devices (FlashSystem 5200 running firmware 8.5.0.3)
  • lpfc driver
  • dm-multipath

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