Mellanox Technologies MT27500 on RHEL6.3 does not come up with network interfaces

Solution Unverified - Updated -

Issue

  • Mellanox Technologies MT27500 on RHEL6.3 does not come up with network interfaces, works on 6.2
  • infiniband card (Mellanox Technologies MT27500 Family [ConnectX-3], pciid 15b3:1003) working on RHEL6.2 but not on RHEL6.3
  • file /sys/module/mlx4_core/parameters/port_type_array contains one or multiple zeros ("0"), signalling that the card is used in InfiniBand storage mode instead of network interface mode
  • My Mellanox card is not usable

Environment

  • Red Hat Enterprise Linux (RHEL) 6.3
  • Red Hat Enterprise Linux (RHEL) 6.4beta
  • Mellanox Technologies MT27500 Family ConnectX-3, pciid 15b3:1003 (issue likely to apply also to other cards)
  • kernel 2.6.32-279 and later (RHEL6.3GA kernel)
  • mlx4_core and mlx4_en kernel modules

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