File systems accessing register dynamic collection method

Abstract

The invention discloses a dynamic acquisition method of file system access record, belonging to the field of storage system testing and performance analysis. The invention is characterized in that a kernel module can be loaded without the need of unloading the old file system, thus not needing to interrupt the working application. A file system operation interception module can dynamically intercept the underlayer file system operation by a substitution of corresponding functions in the interception module. While executing the underlayer file system operation, the functions output the operation type and parameters to an access record output module which compresses the file record and outputs a plurality of operation information at one time in a output record way of register. The access record output module controls the output file size to prevent the problems of difficult read and write and exceeding file system restriction. An access record file management module collects additional information and packages and transfers the access record according to the assignment of users, thus being convenient for users to manage. The test shows that the collection of access record has little impact on the application.

Description

technical field [0001] The method for dynamically collecting file system access records belongs to the field of test and performance analysis of storage systems, and particularly relates to the field of file system operation tracking and analysis. Background technique [0002] File system access record collection technology refers to recording the type, occurrence time and parameters of operations in the file system into log files for future analysis and testing. The main purposes of the file system access records are as follows: First, the access records help to design better hardware and software, find the bottleneck of the file system, and provide valuable data for system optimization and improvement. For example, you can use various data such as the ratio of file creation, the distribution of file read and write operations, and the frequency of file operations to evaluate whether the system is effective and meets expectations. Access records can be used to analyze and o...

AI Technical Summary

Problems solved by technology

[0003] The traditional access record collection method has some defects: some collectors collect access records at the system call layer instead of the file system layer, and they cannot collect the internal operations of the file system. For some applications that do not access files through the system call layer, Like NFS servers, they can't do anything

Although some collectors work at the file system layer, they require the file system to be reloaded before use, which will interrupt all user applications that are working on the file system

In some environments, this cannot be tolerated. For example, in some parallel computing or enterprise applications, 24×7 availability is required, and stopping the application will bring huge losses.

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