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A data block migration method and device

A data block and numerical technology, which is applied in the field of data block migration methods and devices, can solve problems such as the reduction of service performance of a storage system, and achieve the effect of improving service performance.

Active Publication Date: 2017-06-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a data block migration method and device to solve the problem of reduced service performance of the storage system caused by slight changes in access frequency

Method used

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  • A data block migration method and device
  • A data block migration method and device
  • A data block migration method and device

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0049] The data block migration method provided by the embodiment of the present invention is applied to a storage system that includes storage media with different performance levels, and the access frequency of data blocks stored in each layer of storage media is different. In the embodiment of the present invention, a change range is set for the storage threshold between storage media of adjacent levels, and data blocks within the change range ar...

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Abstract

The invention discloses a data block migration method and device. According to the method, the access frequency of a data block is counted; whether the access frequency reaches the storage threshold value of the data block migration or not is judged; if the access frequency reaches the storage threshold value of the data block migration, whether the access frequency is a value in an anti-shake region range of the storage threshold value or not is judged; if the access frequency is not the value in the anti-shake region range of the storage threshold value, a data block is migrated into a storage medium conforming to the data block access frequency; if the access frequency is the value in the anti-shade region range of the storage threshold value, the data block is not migrated. According to the method and the device, the frequent migration of data with tiny access frequency change among different storage media can be avoided, and further, the service performance of a storage system can be improved.

Description

Technical field [0001] The present invention relates to the technical field of data storage, in particular to a data block migration method and device. Background technique [0002] As a mainstream technology in the field of data storage technology, data tiered storage technology can meet the performance and capacity requirements of data tiered storage systems at a lower price. [0003] Data tiered storage technology mainly includes three parts: data block monitoring, data block cold and hot identification, and data block migration. The data monitoring process mainly monitors and records parameter values ​​such as the access frequency of the data block to determine the access heat of the data block. The process of identifying hot and cold data is mainly to identify cold-spot data blocks and hot-spot data blocks through the access frequency determined in the data monitoring process. The data block migration process is mainly to determine which layer of the data tiered storage syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F12/0802
Inventor 林宇王宇王辰
Owner HUAWEI TECH CO LTD
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