When is SR-IOV support for RHEL 7.7 coming in OFED drivers?

When will SR-IOV support under RHEL/CentOS 7.7 become available in MLNX_OFED? We have been using SR-IOV in our application for years, and lack of that support is blocking us moving to 7.7.

Known Issue 1888574 for the MLNX_OFED 4.7-1.0.0.1 release says:

“SR-IOV is only supported … on RedHat/CentOS 7.4, 7.5 and 7.6.”, which does NOT include 7.7. This strongly suggests that this issue is known.

Our testing shows SR-IOV not working normally under 7.7. With our ConnectX 5 cards, the “ip link show up” command shows the SR-IOV Virtual Functions under RHEL/CentOS 7.6 with MLNX_OFED drivers, and also under 7.7 with the Kernel built-in Mellanox driver (version 5.0-0). But under RHEL/CentOS 7.7 with the MLNX_OFED 4.7-1.0.0.1 drivers, “ip link show up” does not show any SR-IOV Virtual Functions. Interestingly, ‘lspci” shows the virtual functions al all 3 cases.

Has the Kernel built-in Mellanox driver (version 5.0-0 in 7.7) become a viable alternative to the MLNX_OFED driver for SR-IOV support? It did not used to be. Should we try using it?

Hi William,

Please note that currently SR-IOV is not supported for RHEL 7.7

I suggest to open a support case at support@mellanox.com to get further information when it will be part of MLNX_OFED .

Thanks,

Samer