Study On Live Migration Protocol For Virtual Cluster Over WAN

In recent years, with the rapid developments of electronic technologies, the performance of computer hardware enhances while the cost gets reduced, which accelerates the developments of virtualized High Performance Computing (HPC) environments. Virtualization technology has been evolved from traditional operating system (OS) virtualization that are used for sharing valuable mainframe resources to modern infrastructure virtualization that managing entire shared distributed systems to satisfy various resource requirements.Currently, existing researches focus on dynamic VC management in construction phase, seldom work is done to ensure reconfiguration of VC' topology in runtime. Most virtual infrastructures support single VM live migration while researches on concurrent VC live migration are rare. Virtualized HPC platforms are still vulnerable and lack of flexibility.This paper design virtual network communication between mechanisms after studying the issue that the virtual machine Xen cannot migrate across wild area network. The mechanism is mainly to achieve the online migration between virtual machine across the wild area network, and to allocate the resources rationally, and to improve the rate of resource utilization. The work achieved the communication and migration between the virtual machine and achieved the integrity of data and the consistency of status thought the tunnel migration. The paper designed a distributed cache protocol which used the caching mechanism to ensure the integrity of data during the virtual machine's live migration phase. It save the lost packets effectively and then forward the data to the virtual machine; we improve data reliability by reducing the distributed cache data and control the online ordering of packet loss and state consistency by message.Finally, based on experimental data, it can be concluded that the virtual communication network designed in this paper can adapt to the dynamic changes of virtual machines, to achieve a virtual machine within the wide area network communications, effectively ensuring the arrival of cached data, the cache protocol can support concurrent virtual machine migration, and can accurately capture the purpose of lost data packets and sent to the virtual machine; The way of using dynamic ip assigned an effective solution to solve the cluster ip conflict; by using packet capture tools to effectively improve the network communication efficiency, reduce the network load. Live migration is the fundamental mechanism for dynamic resource management. As a virtual infrastructural tool, EVC provides the basic support for dynamic resource management and is lack of resource management strategies and scheduling methods. We are planning to extend EVC with high-level resource management, such as real time performance monitoring, topology-aware scheduling and load balance, etc. Network throughput and latency affect the VCs'network performance and live migration process.this paper has been successfully resolved the problem that live migration of virtual machine across the wide area network, and laid an important foundation for the virtual machine live migration. Therefore, this study has far-reaching significance of scientific research.