| With the rapid development of network technology, Web 2.0 has been widely usedin digital campus, generating a lot of data, Most of which is simply stored in traditionalfile systems. As the construction of digital campus progresses steadily, the number offiles size becomes huge, and access to files rises sharply. The traditional file system hasbecome the bottleneck of Web applications. Distributed file system can effectively solvethe mass storage problem and high concurrent access problem, and has been successfulapplied in many Web 2.0 applications to provide file storage services. It has become aresearch issue to integrate a distributed file system into the digital campus.According to the current situation of file storage for digital campus, after the re-search about techniques and implementations of existing distributed file systems, this pa-per designed a tiny distributed file system named CeipFS, which aims to solve the unifiedmanagement of numerous small files and reliable storage problem.This main work done in this paper includes the following items:1. Accordingtothecharacteristicsoffilestorageindigitalcampus,wedesignCeipFS'sframework. By horizontally organizing and distributing metadata, it accelerates thefile access speed. Based on registration and report mechanisms, it can expands thestorage dynamically. It can effectively handle a large number concurrent access ofsmall files by applying some delicate means.2. Thekeytechnologiesforsystemimplementationandoptimizationarestudied. User-specialized-block is used to solve the multi-tenant problem. It also discusses thebalance of capacity, read and write equalization, consistency and cache coherence.By utilizing rapid remove acrobatics and economical reporting mechanism, it fur-ther improves the system's performance.3. It addresses the security issue by using a password authentication scheme inspiredby Hwang-Li's solution, and by combining with access control list.4. The use of CeipFS in digital campus are discussed and analyzed. We propose thecorresponding solution to the different file access scenario.The filter and downloadcomponents are developed to simplify the use of CeipFS. |
