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Research Goal. Introduction. Top-level Resource Model. Context-Aware Policies for VR. Concluding Remarks. Virtualization. Towards a Context-Aware Information Model to Support Virtualization. Yeongrak Choi 1 , Jian Li 2 , Yoonseon Han 1 , John Strassner 1 , and James Won-Ki Hong 1,2

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towards a context aware information model to support virtualization

Research Goal

Introduction

Top-level Resource Model

Context-Aware Policies for VR

Concluding Remarks

Virtualization

Towards a Context-Aware Information Model to Support Virtualization
  • Yeongrak Choi1, Jian Li2, YoonseonHan1, John Strassner1, and James Won-Ki Hong1,2
  • 1 Division of IT Convergence Engineering, POSTECH, Pohang, Korea
  • 2 Department of Computer Science and Engineering, POSTECH, Pohang, Korea
  • More Complex Services with Resources
    • Increasing necessity for new, innovative and personalized services
    • Contention among those services for the same set of shared resources
    • Difficulties in management: a mix of services with shared resources
  • Benefits of Virtualization
    • Isolate different machines and applications that have different requirements
    • Decouple hardware, operating system, and application dependencies
    • Provide different availability, reliability, and backup policies simultaneously
  • Model Virtual Resources and Corresponding Services
    • Build an unified information model to support both virtual and non-virtual resources
    • Model behaviors of virtual resources by defining a set of classes and corresponding associations
    • Support context-aware policies to govern services and resources offered by the system being managed
  • Extension of the DEN-ngResource Domain: with Virtualization
    • Creating a set of classes required to run Virtualization
      • VirtualResource and its subclasses
      • VRMappedToNVRDetails: contains mapping information from/to NonVirtualResources
    • PlacingVirtualResource into hierarchy with NonVirtualResource
    • Changed/Created definition for classes for the new hierarchy
      • NonVirtualResource: Resource in the original DEN-ng
      • Definition of VirtualResource: an abstraction that decouples the physical manifestation of a Resource from its logical operation
      • Definition of Resource: a set of entities that are of interest to the managed environment

Virtual System

Virtual System

Virtual System

Application

Application

Application

Operating System

Operating System

Operating System

Virtual Infrastructure

  • Use of Context-Aware Policies for Managing VirtualResource
    • ContextData: different aspects of context (e.g. the set of resources that each virtual device provides)
    • Context: a complete aggregate of context aspects (e.g. the virtual service)
    • Use Context and ContextData to select the appropriate set of policy rules to realize the set of governance operations for managing VirtualResource

Servers

Servers

Storage

Storage

Network

Network

  • Hardware Virtualization
    • A virtualization of computers or operating systems
    • Decouple the software environment from its underlying hardware infra.
  • Virtual Infrastructure
    • Share physical resource of multiple machines across the entire infra.
    • Virtual resources are shared across multiple Virtual Systems
  • Virtual System
    • A tightly isolated software container that can run its own operating systems and applications as if it was a physical computer
  • Conclusion
    • Extended DEN-ng information model to support virtualization
    • Modeled virtual resources with non-virtual resources to apply context-aware policies
  • Future Research
    • Convert the model to OWL ontology and apply first-order logic to decrease the management complexity for virtualization
    • Validate the model using a set of detailed scenarios and a simulator