Multi-user-version hierarchical document mapping method

Abstract

The invention relates to a multi-user-version hierarchical document mapping method. By the method, starting from providing all users with basic fully shared document collection, document data of each user is stored hierarchically according to different document modification made by different users, an independent personal document system version is maintained for each user via a mapping function; high redundancy removal in a shared document system is realized while multi-user sharing of document data and applications is guaranteed; once a complicated operating environment is built up and configured, all the users can use the operating environment and modify configurations at will; complex and burdensome consistency maintenance of data in an ordinary shared document system is avoided; each user can customize a security protection mechanism for his or her personal virtual document system and set different security levels for each hierarchical storage level, and accordingly, a secure access control more reliable and flexible than other document systems is provided.

Description

Technical field [0001] The invention relates to a hierarchical mapping method of a multi-user version file system, relates to a distributed file system, and particularly relates to a distributed file system in the field of cloud computing. Background technique [0002] Cloud computing is a hot research problem in the current computer field. The core of cloud computing is to provide users with services in the form of renting computing resources after virtualizing the computing resources of one or several data centers. Resource management is cloud computing. The core issues of the system, especially the management of data and software resources, its storage and organization are the key factors for the processing computing power and performance of the "cloud" environment. The basis of software resources is files, and software runs based on files (such as executable files, configuration files, data, etc.). The core task of cloud computing is to provide computing services. This servic...

AI Technical Summary

Problems solved by technology

[0006] But this will also cause data sharing problems, refer to Figure 10 , the data sharing between users is only realized by developing permissions or establishing links-these shared data mechanisms are only for data files, and the software sharing mechanism of the system requires special settings (for example, in windows, users are given permission to use ), specific users can use the corresponding software

After the user obtains the right to use the software, he may modify the configuration of the software to meet his own requirements, and this modified configuration is visible to other users, that is, a user's modified configuration of the software will inevitably affect the use of other users. The modification will overwrite the configuration of the previous user, which is very unfavorable for each user in a multi-user environment to maintain their own software operating environment

This problem can also be extended to multiple users sharing the same large data set - each user may only modify a few of the data, and these modifications overwrite each other. If each user wants to keep only their own updates, the entire data set needs to be Copying to your own directory to keep an independent copy, this has caused a great waste of space, and at the same time, access to shared resources has also brought complex synchronization management, which restricts the system's rapid response to user requests

[0007] It can be seen from the above that the existing file system cannot provide a completely isolated operating environment and data view for multiple users at the same time, so as to realize a system that can provide users with data and application software services and realize independent use of data and software among multiple users. The file system has great practical value,

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