Data reading and writing method and device, storage system and computer readable storage medium

Abstract

The invention discloses a data reading and writing method and device, a distributed storage system and a computer readable storage medium. The method comprises the steps that a virtual LAN arranged between a service layer and a storage system layer of a server receives a data reading and writing request; based on the information of the data to be read and written carried by the data reading and writing request and the one-to-many mapping relationship between the virtual LAN and multiple entity LANs, by means of a preset splitting algorithm, the virtual LAN splits the data reading and writing request into at least one reading and writing subrequest and forwards the reading and writing subrequests to the corresponding entity LANs through a data connection channel, so that the entity LANs process the reading and writing request in parallel. According to the method, the data reading and writing request is forwarded to the multiple entity LANs to be processed in parallel, so that the situation that a great number of IO requests are delayed outside the LAN is avoided, IO request processing is accelerated, that is to say, the virtual LAN has an effect on IO pressure splitting, the pressure of single LAN IO is apportioned to the multiple LANs, and the IO performance and the storage system performance are improved.

Description

technical field [0001] The present invention relates to the technical field of IO reading and writing, and in particular, to a data reading and writing method, a device, a distributed storage system and a computer-readable storage medium. Background technique [0002] With the continuous growth of data scale and data quantity, the application of distributed storage system is also more and more extensive. [0003] At present, the Internet Small Computer System Interface (Internet Small Computer System Interface, iSCSI) technology has been maturely applied to various distributed storage systems. Moreover, the back-end storage structure applied by iSCSI technology is mostly PC architecture, that is, a common computer with efficient and stable performance is used as a server, and iSCSI services are provided externally by installing iSCSI Target software. A distributed storage system applying this service form generally adopts a storage architecture as a storage area network (St...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a data reading and writing method, device, distributed storage system and computer-readable storage medium, to solve the problem that the single LAN processing capacity of the existing distributed storage system cannot satisfy a large number of IO requests, resulting in large IO delay and storage problems. System performance issues

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