Dynamically Reconfigurable Semantic Study Of The DSM

In the era of information explosion, the distributed system is the main focus ofresearches of computing science. With the explosive growth of user informationdata, the system changes dramatically and new problems emerge.The behavior ofeach node, link failures, node failures and other environmental factors affect theavailability of independent nodes, the dynamic trend of system grows rapidly. Thereconstruction of the system in a dynamic environment has become an importantresearch direction. In this context, this paper made a research on the reconstruct andimplementation of distributed storage system in the dynamic environment.First, this paper made a research on the distributed shared memory system.Through the comparison to the traditional sharing technology, this paper identifiedthe consistency guarantee of reconstruction requirements, the dynamic mechanism,the system model and other elements, then made an analysis and research on them.For the problems of distributed shared memory system node faults, link failures,node dynamic join and deletion, and so on, this paper put forward FDRDSM fastreconstruction algorithm based on a further research of various reconstructionalgorithms. First of all, the paper conducted a research and implementation of thealgorithm, including the realization of reading and writing, reconstruction andgarbage collection, based on which, the purpose of reconstruction of the distributedstorage system can be achieved. Secondly, through a continuous analysis of thealgorithm, this paper ensured atomic properties of the algorithm and orderlyexecution of the operation. Finally, based on a realization of the algorithm under theenvironment of Lustre distributed file system, a dynamic reconfiguration and a dataanalysis of various servers, this paper also verified the feasibility of the algorithm.