正しい対処方法は、Redfishファームウェア更新プロセスによって作成されたタスクIDを使用してDPU BMCに問い合わせることです。Redfishを介して実行されるBlueField BMCファームウェア更新は、BMC側のタスクとして追跡されます。
NVIDIA BlueField BMC firmware documentation describes Redfish-based firmware upgrade operations and indicates that the secure update starts tracking progress. The Redfish task object exposes fields such as TaskState, TaskStatus, messages, and progress indicators, which are the correct source of truth for update completion or failure. Checking /var/log/messages inside the DPU operating system may not show BMC firmware update progress because the operation is managed by the BMC. Power cycling immediately is unsafe because interrupting firmware update or activation can cause recovery problems. bfrec --status is not the standard command for tracking Redfish BMC firmware update task progress. In NVIDIA AI infrastructure bring-up and maintenance, firmware operations should be monitored through the management controller workflow that initiated them, preserving the Task ID and polling the BMC task endpoint until completion, failure, or a documented timeout condition is reached.