FusionCompute is deployed in a data center, and now due to equipment upgrade needs, it is planned to virtualize a certain business.

The virtual machine is migrated to a specific CNA (Compute Node Agent) host in another cluster. technical engineer root According to the plan, after the virtual machine migration action is executed, the migration task progress bar displays: The task failed, the system abnormal. Which of the following statements about the causes of the above phenomenon is correct? ( one)