Exalogic: IB Network (EoIB & IPoIB) Not Working With "ibstat" Command Failing With Error: "ibwarn:  umad_init: can't read ABI version from /sys/class/infiniband_mad/abi_version (No such file or directory): is ib_umad module loaded?"
(Doc ID 2101143.1)
Last updated on FEBRUARY 20, 2018
Applies to:Oracle Exalogic Elastic Cloud Software - Version 18.104.22.168.0 and later
Oracle Virtual Server x86-64
In Exalogic Linux Physical and Virtual racks, issue of Compute Nodes(Physical rack) or Guest vServers (virtual rack) having no IB network connectivity both EoIB and IPoIB is seen. In case of Compute Nodes only Management interface works.
VNICs status on the IB Switches is shown as WAIT-IOA status as seen below
1 WAIT-IOA N 0021280001EF3D73 el01cn07 EL-C 192.168.XX.38 0000 xx:xx:xx:10:00:07 NO 0xffff 0A-ETH-1
# ssh el01gw02 showvnics | grep el01cn07
8 WAIT-IOA N 0021280001EF3D74 el01cn07 EL-C 192.168.XX.38 0000 xx:xx:xx:50:00:38 NO 0xffff 1A-ETH-1
"ibstat" command fails with below error:
ibwarn:  umad_init: can't read ABI version from /sys/class/infiniband_mad/abi_version (No such file or directory): is ib_umad module loaded?
ibpanic:  main: can't init UMAD library: No such file or directory
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