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OS Fails to Recognize Infiniband HCA (Doc ID 2448843.1)

Last updated on MAY 17, 2021

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Linux x86-64
Linux x86

Symptoms

Infiniband HCA has been implemented onto a server, however, OS does not recognize it with following error messages in /var/log/messages or dmesg:

Aug 12 22:51:53 hostname kernel: mlx4_core 0000:a0:00.0: mlx4_cmd_poll:command 0x4, cmd_pending failed
Aug 12 22:51:53 hostname kernel: mlx4_core 0000:a0:00.0: QUERY_FW command failed, aborting.
Aug 12 22:51:53 hostname kernel: mlx4_core 0000:a0:00.0: PCI INT A disabled

Cause

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In this Document
Symptoms
Cause
Solution


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