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Data storage method and system in storage cluster and related device

A technology of data storage system and storage cluster, which is applied in the direction of electric digital data processing, input/output process of data processing, instruments, etc. It can solve the problems of low data storage efficiency, reduce the frequency of changes, improve storage performance, and reduce data The effect of migration

Active Publication Date: 2020-11-20
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Problems solved by technology

[0003] In related technologies, if there is a source hard disk failure in PG, no matter whether it has been corrected or not, PG traversal needs to be performed again, causing unnecessary data reconstruction, making data reduced storage efficiency

Method used

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  • Data storage method and system in storage cluster and related device
  • Data storage method and system in storage cluster and related device

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Embodiment Construction

[0042] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0043] Please refer to figure 1 , figure 1 It is a flow chart of a data storage method in a storage cluster provided by an embodiment of the present application, and the method includes:

[0044] S101: Obtain the initial distribution and balanced distribution of disks in the target placement group;

[0045] This step aims to obtain the initial dist...

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Abstract

The invention provides a data storage method in a storage cluster. The data storage method comprises the steps of obtaining initial distribution and balanced distribution of disks in a target homing group; when the source disk in the initial distribution fails, generating a corresponding fault table; determining post-fault distribution according to the equilibrium distribution and the fault table;judging whether a target disk corresponding to the source disk in the post-fault distribution is located in a fault table or not; if not, taking the equilibrium distribution as the final distributionof the target classification group. According to the method, the data migration amount can be reduced, the data reconstruction bandwidth is reduced, equipment resources occupied by reconstruction arereleased, the change frequency of the arrangement group is reduced, and the storage performance of the storage equipment is improved. The invention further provides a data storage system in the storage cluster, a computer readable storage medium and storage equipment, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the field of data storage, in particular to a data storage method, system and related devices in a storage cluster. Background technique [0002] A distributed storage system consists of multiple storage pools, and each storage pool has its corresponding data distribution rules, such as copy rules or erasure rules. Generally speaking, metadata is stored in the copy storage pool, and data is stored in the erasure pool. In order to facilitate the management of data distribution, a general storage pool is divided into multiple PGs (Placement Group, a logical unit of data distribution), and each PG contains several hard disks according to the copy or erasure rules. For example, the 4+2 erasure rule needs to save 6 pieces of data, and 6 hard disks are needed to save the data, so each PG contains 6 hard disks. PG is a virtual unit used only to record data distribution. The distribution of PGs on the hard disk directly de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/30
CPCG06F3/0631G06F3/0647G06F3/0644G06F3/067G06F3/0676G06F11/3037
Inventor 王根岭孟祥瑞
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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