Remote file system mirroring method and system based on client persistent cache

Abstract

The invention provides a localization mirror image method and a system of the mirror image method which achieve a telefile system with a local disk file system as a lasting caching space on client computing equipment in the network environment. By visiting a 'localization mirror image client-side system' applied on the client computing equipment, the telefile system is visited in a transparent mode. Part of files of the telefile system and part of data of the files are cached lastingly by the 'localization mirror image client-side system' through a 'local disk file system', and the 'localization mirror image client-side system' is responsible for maintaining the consistency of the local lasting caching telefile system. According to the localization mirror image method and the system of the mirror image method, the grain size is adopted as the smallest unit to achieve uploading and downloading of files of the local file system and telefile system, to achieve read-write operation of the files in local lasting caching, and to support lasting caching of part piece data of the files. By means of the localization mirror image method and the system of the mirror image method, visiting efficiency of a 'client application program' on the telefile system can be effectively improved so as to improve the client experience, and network flow is greatly saved.

Description

technical field [0001] The invention belongs to the field of computers, and uses a local disk file system as a persistent cache to provide a system and method for efficiently and transparently accessing a remote file system image for applications running on a local client computing device. Background technique [0002] The current remote file system can be divided into two types: [0003] 1. Real-time online remote file systems, such as NFS, CIFS, SSHFS, HDFS (Hadoop Distributed File System), GFS (Google File System), etc. This type of remote file system must be connected to the remote file system in real time, and provide file services for real-time access to the remote file system by applications running on the local computing device. Its main disadvantages: 1. It must be connected to the Internet in real time. Once disconnected, all operations will be invalid; 2. When the network condition is unstable (WIFI or mobile phone 2G network), its user experience is very poor. ...

AI Technical Summary

Problems solved by technology

Its main disadvantages: 1. It must be connected to the Internet in real time. Once disconnected, all operations will be invalid; 2. When the network condition is unstable (WIFI or mobile phone 2G network), the user experience is very poor

Its main disadvantages: 1. The remote file to be accessed must be completely downloaded before it can be accessed; 2. Due to the limitation of local temporary storage space, it cannot provide file access services larger than the local storage space

[0010] However, paper 2 does not study the caching of remote file systems on local computing devices, but still implements caching on proxy servers in the network

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