File reading method, system and related device of distributed storage system

Abstract

The invention discloses a file reading method and system of distributed storage syste, an electronic device and a computer-readable storage medium. That method comprise the steps of: when an IO request of a client is received, determining a read-ahead upper limit accord to a data size of the IO request; Sending a read request with a size of the upper limit of the pre-read to the object storage device each time, and storing a return result of the read request into a memory until all data corresponding to the IO request are read; Returning data corresponding to the IO request stored in the memory to the client. Thus, the file reading method provided by the application can reduce the interaction times between the client and the object storage device, reduce the IO times of the disk, improve the sequential reading performance, thereby improving the performance of the entire storage system and enhancing the product competitiveness.

Description

technical field [0001] The present application relates to the field of computer technology, and more specifically, to a distributed storage system file reading method and system, an electronic device, and a computer-readable storage medium. Background technique [0002] As distributed block storage systems are widely used in various fields, customers have higher and higher performance requirements for storage systems, and it is increasingly important to improve the performance of distributed block storage systems. The distributed block storage system utilizes the high bandwidth and high IOPS (Input / Output Operations Per Second, one for computer storage devices) aggregation capabilities of IP (full name in Chinese: Internet Protocol, full name in English: Internet Protocol) network. It provides a unified block data access service externally, and at the same time, the client accesses the distributed block storage system through the ISCSI (Internet Small Computer System Interfa...

AI Technical Summary

Problems solved by technology

Since the upper limit of IO (Input / Output) reading and writing by the client through the iscsi protocol is 512k, if the IO size of the client accessing the storage system is 1M or larger, the client's IO request will be split into multiple 512k requests, In this way, the client needs to interact with the OSD (full name in Chinese: Object Storage Devices, full name in English: Object Storage Devices) in the storage system multiple times, which increases the number of disk IOs and reduces the read and write performance of the entire storage system.

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