[Pkg-ofed-devel] Setting mtu to 4k does not work
Simon Kainz
simon.kainz at tugraz.at
Wed Oct 14 12:18:22 UTC 2009
We are trying to set the MTU to 4k on this card:
82:00.0 InfiniBand: Mellanox Technologies MT25418 [ConnectX IB DDR, PCIe
2.0 2.5GT/s] (rev a0)
loading
mlx4_core with debug_level=1 set_4k_mtu=1
only show this in dmesg, nothing about not set mtu's:
mlx4_core 0000:82:00.0: Local CA ACK delay: 15, max MTU: 4096, port
width cap: 3
ibv_devinfo also tells me the card is capable ob 4k mtu's.
node2:~# ibv_devinfo
hca_id: mlx4_0
fw_ver: 2.6.900
node_guid: 0003:ba00:0100:7214
sys_image_guid: 0003:ba00:0100:7217
vendor_id: 0x02c9
vendor_part_id: 25418
hw_ver: 0xA0
board_id: MT_04C0110002
phys_port_cnt: 2
port: 1
state: PORT_ACTIVE (4)
max_mtu: 4096 (5)
active_mtu: 2048 (4)
sm_lid: 1
port_lid: 1
port_lmc: 0x00
port: 2
state: PORT_DOWN (1)
max_mtu: 4096 (5)
active_mtu: 4096 (5)
sm_lid: 0
port_lid: 0
port_lmc: 0x00
Any idea on how to resolve this issue? Is it even worth it?
Regards,
--
DI Simon Kainz
Graz, University of Technology
Department Computing
Phone: ++43 (0) 316 / 873 6885
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