File writing method and device, equipment and medium

Abstract

The invention discloses a file writing method and device, equipment and a medium, and relates to the technical field of information. The method comprises the following steps: acquiring a file writing request carrying to-be-written data for a target file; judging whether the target file is a small file used for forming a large file through hierarchical aggregation processing or not; if the target file is the small file, judging whether a file writing type corresponding to the file writing request is a file additional writing type or not; if the file writing type is a file appending writing type, creating a corresponding temporary page and a target page cache for the target file, and reading the target file into the temporary page; and copying the target file in the temporary page to the target page cache based on a page copying technology, and directly writing the to-be-written data into the target file. By means of the scheme, unnecessary resource waste can be reduced during file writing, the writing efficiency is improved, and the file writing process is optimized.

Description

technical field [0001] The present invention relates to the field of information technology, and in particular, to a file writing method, device, device and medium. Background technique [0002] In a distributed storage system, the data and metadata of files read and written by users through the kernel client are stored on the server side. Usually, files that are accessed frequently by users are placed in the source pool, and files that are accessed less frequently by users are placed in the migration pool. The data of the file is usually placed in the source pool at the beginning of creation, and after a period of time, it is migrated to the migration pool, and the migration process is called data grading. In some specific scenarios, there will be a large number of small files. In order to improve the classification efficiency of small files, the server needs to aggregate small files into large files and then migrate the large files. The aggregation is performed along with...

AI Technical Summary

Problems solved by technology

When writing, the data in the address of the user state is copied to the page cache of the file, and then the next thread is executed to place the data on the disk, but in fact, the read data has no direct use value for the user, and is only for the second Integrity of data written at one time, resulting in waste of resources

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