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Method, system and equipment for degrading RAID (Redundant Array of Independent Disks) into RAID5 (Redundant Array of Independent Disks)

A storage medium and fast technology, applied in the input/output process of data processing, instruments, input/output to record carriers, etc., can solve problems such as complex operations, reduce check codes, reduce data migration, and function correctly Effect

Pending Publication Date: 2022-05-27
SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional RAID downgrade is to re-migrate the data and then complete the encoding based on the load balancing algorithm after extracting the disk. This operation is more complicated.

Method used

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  • Method, system and equipment for degrading RAID (Redundant Array of Independent Disks) into RAID5 (Redundant Array of Independent Disks)

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Embodiment Construction

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings.

[0025] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities with the same name but not the same or non-identical parameters. It can be seen that "first" and "second" It is only for the convenience of expression and should not be construed as a limitation to the embodiments of the present invention, and subsequent embodiments will not describe them one by one.

[0026] In a first aspect of the embodiments of the present invention, an embodiment of a method for downgrading a fast and general RAID to RAID5 is proposed. figure 1 Shown is a schematic diagram of an embodiment of a method for a fas...

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Abstract

The invention provides a method, a system and equipment for degrading a rapid and universal RAID (Redundant Array of Independent Disks) into RAID5 (Redundant Array of Independent Disks 5), and a storage medium. The method comprises the following steps: determining parameter information of a to-be-degraded RAID group code according to a load balancing arrangement position relationship; a corresponding disk is extracted from the RAID group to be degraded according to requirements, and the remaining RAID groups are rearranged and numbered; calculating a new arrangement position based on a load balancing arrangement algorithm, and shifting the data block or the verification block of which the position is changed; and updating the check code of the shifted RAID group according to the check code of the RAID group to be degraded. According to the method, data migration can be reduced, new RAID group check codes of the RAID5 can be reduced, and on the premise that the function is correct, it is guaranteed that operation is simple, and the method is universal for any RAID group.

Description

technical field [0001] The present invention relates to the field of disk arrays, and more particularly, to a fast and general method, system, device and storage medium for downgrading RAID to RAID5. Background technique [0002] RAID (Redundant Arrays of Independent Disks) is a disk array with redundancy. The disk array is a disk group with huge capacity by combining multiple independent disks together. The use of RAID storage technology can greatly increase storage capacity, improve system input and output request processing capabilities, and improve data reliability through data distributed storage technology, parallel access methods and information redundancy technology. According to different strategies and structures, RAID can be divided into different levels: RAID 0, 1, 5, 6, 10. [0003] RAID 5 (independent disk structure with distributed parity). Its parity code exists on all disks, where p0 represents the parity value of the 0th band, and the other meanings are t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0689G06F3/0604G06F3/0629
Inventor 吴睿振王明明陈静静王凛
Owner SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD