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Data reading method and device

A data reading and data technology, applied in the direction of electrical digital data processing, data processing input/output process, response error generation, etc., can solve the problems of large resource consumption, large data reading delay, etc., to reduce data The effect of recovery

Pending Publication Date: 2021-03-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This application provides a data reading method and device, which can be used to solve the problem of data reading caused by recovering the data of the faulty disk by reading data on other hard disks when the processor reads the faulty disk in the related art. The problem of large delay and large resource consumption

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0030] Before explaining the embodiment of the present application in detail, the system architecture involved in the embodiment of the present application is firstly introduced.

[0031] figure 1 It is an architectural diagram of the storage system involved in the data reading method provided by the embodiment of the present application. Such as figure 1 As shown, the system includes a client 01 and a storage device 02 . Wherein, the client 01 and the storage device 02 can communicate.

[0032] The client 01 may send a read request or a write request to the storage device 02 .

[0033] The storage device 02 may include a processor 021 , a memory 022 and a hard disk 023 .

[0034] The processor 021 can be a general-purpose c...

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Abstract

The invention discloses a data reading method and device, and belongs to the technical field of storage. For a hard disk with the corresponding hard disk state is the risk state in RAID, when a reading request for the hard disk of the type is received, the corresponding data stored in the hard disk can be read according to the reading request, the data is verified, and if the data passes the verification, the read data can be returned. Compared with the prior art, no matter what faults happen to the hard disk, recovery is conducted by directly reading data on other hard disks, the time delay of data reading is shortened, and meanwhile consumption of system resources is reduced.

Description

technical field [0001] The present application relates to the field of data storage, in particular to a data reading method and device. Background technique [0002] Redundant array of independent disks (RAID) refers to a technology for reading and writing data based on multiple hard disks. According to different implementation principles, RAID can be divided into hard RAID and soft RAID. Among them, hard RAID implements RAID functions including data reading and writing through hardware, while soft RAID refers to implementing RAID functions through an operating system and CPU. [0003] In related technologies, for soft RAID, when a certain hard disk among multiple hard disks fails, the hard disk may send a failure signal to the processor. Wherein, when a hardware failure occurs in the hard disk, all the data stored on the hard disk will usually be damaged or lost, and when a software failure occurs in the hard disk, usually only part of the data stored in the hard disk wil...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F11/07
CPCG06F3/0689G06F3/061G06F11/0727G06F3/06G06F11/07
Inventor 张瑛熊伟
Owner HUAWEI TECH CO LTD
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