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A data processing method and device

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

Active Publication Date: 2021-04-09
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 present application discloses a data processing method and device, which relate to the field of storage technology and solve the problems of large time delay and high computational complexity. Specifically, it is determined that the target data including the first user data and the second user data has erroneous data, the first user data is stored in the first data block of the first stripe, and the second user data is stored in the second data block of the first stripe. Data block; read the remaining user data and verification data group, the remaining user data is the user data stored in other data blocks in the first partition, the verification data group includes the verification data stored in the verification block, and the first partition includes At least two check blocks; according to the first preset algorithm, the remaining user data and the check data group, calculate the first reference data corresponding to the first user data, and the second reference data corresponding to the second user data; if the second A reference data is equal to the first user data, and a second reference data is not equal to the second user data, and the second user data is determined to be wrong 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 Patents(China)
IPC IPC(8): G06F11/10
CPCG06F11/108G06F11/10
Inventor 李大权薛强
Owner HUAWEI TECH CO LTD