The Research Of The Key Technologies Of SAN Based Secure Single Image Cluster File System

In recent years, Internet has taken a more and more important role in our life, and with the boost of the wide-band, multi-media application and VOD, the traditional UNIX File system can not meet the need of the secure storage and high speed transmission for millions files, and they don't support large-scale, real-time and parallel accesses to the files. At the same time, traditional UNIX File system has a lot of problem in security, extensibility and availability. File System with high performance, high extensibility, high availability and high security has been one of the most important technologies of the Internet.In this project, we take account of the problem above, research and realize a SAN based high performance, high extensibility, high availability and high security Cluster File System-CFS.This paper discusses the difference of the storage architectures-DAS, NASand SAN, and analyzes the advantage of the SAN architecture. This paper also gives the concepts and key technology of the single image Cluster file system.This paper analyzes system's availability, presents the definition of the availability and quantitative analysis of system's availability. According this, we have designed and realized the system's high availability at NIC level, and released the software in Linux. At last we presents the theory of the RAIN (Redundant Array of Inexpensive NIC), and gives the reference implementation in Linux.This paper discusses the membership management in cluster system, based the analysis of central method and distributed method, we presents a new membership management algorithm based SAN, and analyzes the algorithm's feature and performance.This paper presents the dynamic lock structure in distributed system and the concept of the dynamic granularity lock, esigns and realizes the algorithm of the shrink and expands of the granularity.This paper researches the lock management in distributed system, analyzes the central management algorithm, presents and realizes moveable shared lock server. We also presents a new distributed lock management algorithm based SAN, the protocol of the algorithm is simple, and the extensibility is strong.This paper designs a new 32-bit security processor, we presents the architecture according the features of the cluster file system, and presents a new instruction set for the processor. Based on the architecture, we designs a 3DES encrypt co-processor and a TRNG (True Random Number Generator); Based on the instruction set, we import the GCC for our processor.At last, this paper discusses the CFS's realization and the test result.Now, CFS has been tested by the famous test company-TESCOM, the resultshow the CFS is high performance. CFS has been used in some field and company, it has good market value and bright foreground.