After the first boot into SONiC, the configuration starts issuing the “config qos reload” command. The second step should be saving the configuration by issuing the “config save” command.
The reason you need to do “config qos reload” / “config save” is that SONiC auto-generated config_db.json on 1st init doesn’t include the qos/buffer settings from Innovium. Thus the chip’s datapath isn’t fully initialized. You need to do “config qos reload” / “config save” to generate the QoS/buffer settings from qos.json.j2 and buffers.json.j2 files.