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Method, storage device and system for flow control in distributed storage system

A distributed storage and storage device technology, applied in the information field, can solve problems such as no flow control

Active Publication Date: 2019-05-31
HUAWEI CLOUD COMPUTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no effective means for traffic control between the cache and the hard disk of the storage device in the distributed storage system.

Method used

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  • Method, storage device and system for flow control in distributed storage system
  • Method, storage device and system for flow control in distributed storage system
  • Method, storage device and system for flow control in distributed storage system

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Embodiment Construction

[0096] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0097] In addition, the terms "first", "second", "third", and "fourth" in the embodiments of the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating The number of technical characteristics. Thus, a feature defined as "first", "second", "third" and "fourth" may expressly or implicitly include one or more of such features.

[0098] First of all, some terms and related technologies involved in this application are explained to facilitate understanding:

[0099] 1) Flow control

[0100] When a storage device provides data read and write services, the timeliness of response to data read and write requests is related to the effectiveness of storage services. Limited by the performance of the storage device, the storage device cannot handle read and write requests e...

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PUM

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Abstract

The invention provides a flow control method in a distributed storage system, storage equipment and a system. The method comprises the following steps: allocating a first token resource in a first period to a first-stage memory in a storage device, and allocating a second token resource in the first period to a second-stage memory in the storage device; wherein the first-level memory is a cache ofthe second-level memory, and the sum of the first token resource and the second token resource is a token resource distributed to the storage device by a distributed storage system where the storagedevice is located; controlling an IO request processed by the first-stage memory according to the first token resource in the first period; and controlling the IO request processed by the second-stagememory according to the second token resource in the first period. According to the method, the problem of non-uniform service caused by the fact that IO requests for another level of memory cannot be processed in time due to too many token resources occupied by a certain level of memory can be avoided.

Description

technical field [0001] The present application relates to the field of information technology, and in particular to a flow control method, storage device and system in a distributed storage system. Background technique [0002] The distributed storage system contains multiple storage nodes. When the client writes data to the distributed storage system according to the write request sent by the host, the data is stored in the corresponding storage node in the form of strips. [0003] In a distributed storage system, applications that continuously transmit large files require sufficient bandwidth performance, while applications that randomly read and write small files emphasize the IOPS (Input / output Operations Per Second, IOPS) capability of reading and writing operations per second. In practical applications, in order to ensure the performance of storage services, not only IOPS but also bandwidth need to be paid attention to. Therefore, a distributed storage system needs to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/819H04L29/08H04L47/21
CPCH04L65/40
Inventor 彭国刚张志乐丁萌冯康杨恒
Owner HUAWEI CLOUD COMPUTING TECH CO LTD