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Data processing method and device

A data processing and data technology, applied in the storage field, can solve problems such as high computational complexity and long read IO delay, and achieve the effect of reducing computational complexity and accurately identifying

Active Publication Date: 2020-01-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a data processing method and device, which can solve the problems of large read IO delay and high computational complexity required to read correct data

Method used

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Embodiment Construction

[0031] In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

[0032] The terms "first", "second" and "third" in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to limit a specific order.

[0033] RAID is a disk array formed by combining multiple independent disks, which can provide the host with higher storage performance of a single disk. The disks in the disk array may be mechanical hard disks or solid state disks (SolidState Disk, SSD).

[0034]In R...

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Abstract

The embodiment of the invention discloses a data processing method and device, relates to the technical field of storage, and solves the problems of large time delay and high calculation complexity. The method specifically comprises the steps of determining that error data exists in target data including first user data and second user data, the first user data being stored in a first data block of a first sub-strip, and the second user data is stored in a second data block of the first sub-strip; reading remaining user data and a verification data set, the remaining user data being user datastored in other data blocks in the first sub-strip, the verification data set comprising verification data stored in a verification block, and the first sub-strip comprising at least two verificationblocks; calculating first reference data corresponding to the first user data and second reference data corresponding to the second user data according to a first preset algorithm, the remaining userdata and the verification data set; and if the first reference data is equal to the first user data and the second reference data is not equal to the second user data, determining that the second userdata is error data.

Description

technical field [0001] The embodiments of the present application relate to the field of storage technologies, and in particular, to a data processing method and device. Background technique [0002] Redundant Array of Independent Disks (RAID) is a disk array formed by combining multiple independent disks (disks), which can provide hosts with higher storage performance than a single disk, and can provide Data backup function. [0003] However, with the evolution of the manufacturing process, the number of rewritable cycles of the disk is gradually reduced, and the factors that cause bit errors are also increasing. In this case, part of the input and output (Input Output, IO) needs to go through multiple read retries or take other processing measures to read correct data. At this time, the time delay of reading IO is relatively large, and the computational complexity required to read correct data is relatively high. Contents of the invention [0004] The embodiments of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/10
CPCG06F11/108G06F11/10
Inventor 李大权薛强
Owner HUAWEI TECH CO LTD