Chassis Management Controller Dependency Tracking for Virtual Machine Migration

The patent introduces a chassis management controller as an intermediary component that maintains dependency information between modular information handling systems and shared components. This mediator collects fault information from the chassis and provides it to the virtual machine manager, enabling accurate migration decisions without requiring the VMM to directly complex physical topology awareness. The intermediary handles the complexity of tracking dependencies while keeping the VMM's operation relatively simple.

The patent segments the dependency tracking by organizing it hierarchically: the chassis management controller maintains dependency information specifically for modular information handling systems within its chassis, separating this concern from the virtual machine manager's responsibilities. This segmentation allows fault information to be tracked comprehensively at the appropriate level without creating system-wide complexity. Each chassis manages its own dependencies independently, reducing overall system complexity while maintaining complete fault awareness.

The patent implements preliminary action by having the chassis management controller proactively identify and communicate fault conditions to the virtual machine manager before erroneous migrations occur. The dependency information is maintained in advance, allowing the VMM to anticipate which modular systems are affected by shared component faults and avoid migrating virtual machines to those systems. This preliminary awareness prevents stability issues while maintaining efficient migration decision-making.