Method for improving the reliability of metadata on a traditional RAID group

A metadata and reliability technology, applied in the storage field, can solve the problems of application inflexibility, reliability doubts, and high importance

Inactive Publication Date: 2018-12-14
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, traditional storage has a big disadvantage: after multiple hard disks form a RAID, the RAID level is fixed, which is very inflexible in application, especially in scenarios with a lot of metadata, and its reliability has been greatly affected by users. question
For example: in a certain application scenario, the user wishes to use RAID5 to save data based on performance and cost considerations. However, due to the internal logic of the storage, a large amount of metadata will be generated when implementing functions such as snapshot, deduplication, and all-flash ROW, and these metadata are important. Much higher than the data, users are obviously not satisfied with using RAID5 to save metadata
However, it is difficult to separate the RAID level of metadata and data based on traditional RAID technology

Method used

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  • Method for improving the reliability of metadata on a traditional RAID group

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Embodiment Construction

[0015] Such as figure 1 as shown, figure 1 It is a flow chart of a method for improving metadata reliability on a traditional RAID group proposed by the present invention.

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] A method for improving metadata reliability on a traditional RAID group, comprising the following steps:

[0018] S1: Divide each physical disk into one metadata logical disk and one data logical disk. The spaces of the metadata logical disk and the data logical disk are proportioned according to the ratio of metadata in the system design, and the metadata logic The logical space of the disk and the data logical disk are independent of each other and not shared;

[0019] S2: When creating a data logical disk RAID group, the data logical disk forms a RAID group according to the RAID level specified by the user;

[0020] S3: When creating a metadata logical disk RAID grou...

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Abstract

The invention discloses a method for improving the reliability of metadata on a traditional RAID group, comprising the following steps: dividing each hard disk into a metadata logical disk and a datalogical disk; creating a RAID group from the metadata logical disk and the data logical disk, respectively. The invention discloses a method for improving the reliability of metadata on a traditionalRAID group; aiming at the problem of low reliability of metadata stored in traditional storage, the invention presents a technique of dividing each hard disk into a metadata logical disk and a data logical disk, and then creating RAID groups of metadata and data separately, so as to realize the separation of RAID levels of metadata and data, achieve the purpose of improving the reliability of metadata, and solve the problem that it is difficult to improve the reliability of metadata based on traditional RAID.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a method for improving the reliability of metadata on a traditional RAID group. Background technique [0002] Existing RAID technologies are generally divided into traditional RAID (that is, multiple hard disks are directly formed into a RAID group according to a fixed RAID level) and distributed RAID (that is, each hard disk is divided into fixed small storage units, and then the disks on different disks Small block storage units form a RAID group according to a fixed RAID level, a typical technology is Huawei's RAID2.0). [0003] Traditional RAID is still favored by traditional storage vendors (EMC, IBM, etc.) because of its simple implementation and good performance. However, traditional storage has a big disadvantage: after multiple hard disks form a RAID, the RAID level is fixed, which is very inflexible in application, especially in scenarios with a lot of metadata, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0634G06F3/0689
Inventor 何孝金
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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