Directory quota pre-application method and system, storage medium and equipment

Abstract

The invention provides a directory quota pre-application method and system, a storage medium and equipment. The method comprises steps of responding to initial writing of data into a directory by a client, pre-applying for a quota space greater than the initial writing data volume from a metadata server, and caching the quota space to the client; in response to completion of initial data writing, updating the remaining quota space; in response to the situation that the client writes data into the directory for the nth time and the remaining quota space after the last data writing is completed is smaller than the amount of the data written into the directory for the nth time, the quota space pre-applied this time being calculated on the basis of the remaining quota space after the last data writing is completed and the quota space pre-applied for the first time, and n being larger than or equal to 2; pre-applying for the quota space obtained by calculation from the metadata server, and continuing to write the data for the nth time; and reporting the quota cache information to the metadata server in response to the fact that the total usage amount of the quota space cached by the client reaches a preset threshold. According to the method, the interaction frequency between the client and the metadata server is reduced.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a directory quota pre-application method, system, storage medium and equipment. Background technique [0002] In order to better manage directory capacity allocation and limit the capacity of different directories, the concept of directory quota is proposed. Set a certain quota capacity for the directory. Only the total amount of files that do not exceed the quota can be written in this directory. When the total capacity of files written in this directory reaches the quota size, further writing is prohibited. When a directory quota is set for a certain directory, when the client writes data to the directory, it first applies to the metadata server for the size of the IO write space for this time, and after the writing is completed, the quota information of the metadata server is updated. For a distributed file system, consider that multiple clients write data to the sa...

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Problems solved by technology

[0004]In view of this, the object of the present invention is to propose a method, system, storage medium and equipment for pre-application for directory quotas, which are used to solve the problems of each client in the prior art. When writing data to the directory for the first time, the metadata server needs to interact with the client based on each IO (data input and output), which affects the writing performance of the system

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