Failed to enable SRIOV for mellanox cx-4


New Member
Aug 12, 2023
Fail to enable sriov for cx-4 in PVE8, dmesg shows these. And it is work in PVE7.4, maybe cause by the mlx5_core. This link maybe useful,

[ 364.522176] mlx5_core 0000:01:00.0: mlx5_cmd_out_err:779:(pid 3317): QUERY_HCA_CAP(0x100) op_mod(0x40) failed, status bad parameter(0x3), syndrome (0x5add95), err(-22)
[ 364.559520] mlx5_core 0000:01:00.0: mlx5_device_enable_sriov:82:(pid 3317): failed to enable eswitch SRIOV (-22)
[ 364.559534] mlx5_core 0000:01:00.0: mlx5_sriov_enable:168:(pid 3317): mlx5_device_enable_sriov failed : -22
Hello All,

I have the same problem with Proxmox 8 latest version with Mellnox mlx5.

pve-manager/8.0.3/bbf3993334bfa916 (running kernel: 6.2.16-3-pve)

Driver version:
driver: mlx5_core
version: 6.2.16-3-pve
firmware-version: 16.27.1016 (MT_0000000167)

When i tried to add VFs to "sriov_numvfs" file, i've received the same error above:
echo 8 > /sys/class/net/ens5f1np1/device/sriov_numvfs
-bash: echo: write error: Invalid argument

mlx5_core 0000:3b:00.1: mlx5_cmd_out_err:779:(pid 8554): QUERY_HCA_CAP(0x100) op_mod(0x40) failed, status bad parameter(0x3), syndrome (0x5add>
kernel: mlx5_core 0000:3b:00.1: mlx5_device_enable_sriov:82:(pid 8554): failed to enable eswitch SRIOV (-22)
kernel: mlx5_core 0000:3b:00.1: mlx5_sriov_enable:168:(pid 8554): mlx5_device_enable_sriov failed : -22

I checked the link above of replacing the lines for "eswitch.c?" file, but the file not exists.

Did someone manage to solve this issue?

Many Thanks.


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