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Data reading method and system

A data reading and data block technology, applied in the field of data management, can solve problems such as low data reading efficiency, and achieve the effect of improving reading efficiency

Pending Publication Date: 2020-12-18
SHENZHEN IPANEL TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a data reading method and system for solving the problem of low data reading efficiency in the prior art

Method used

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Embodiment Construction

[0041] In order to facilitate the understanding of the application scheme, the technical terms are explained accordingly:

[0042] Distributed File System (Distributed File System): The physical storage resources managed by the file system are not necessarily directly connected to the local node, but are connected to the node through a computer network. The design of the distributed file system is based on the client / server model. A typical network may include multiple servers accessed by multiple users.

[0043] Disk: A tape-like device is also used in the external memory of the computer. The more commonly used one is called a disk. The circular magnetic disk is placed in a square sealed box. The purpose of this is to prevent the surface of the disk from being scratched. , resulting in data loss.

[0044] Stripe: In a distributed system, all disks in the server cluster are managed uniformly, and each disk is identified by a diskid. Then group these disks, generally accordi...

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Abstract

The invention provides a data reading method and system, and the method comprises the steps: setting the health degree of a strip for each strip, determining the strip information corresponding to a file after a file reading request is generated, wherein the strip information comprises a strip identification and the health degree of the strip, determining whether the health identifier corresponding to each data block is healthy or not according to the health degree of the strip; and for each data block, if it is determined that the health identifier corresponding to the data block is healthy,reading data from the data block. Whether the data can be successfully read from each data block in the stripe or not is pre-judged according to the health degree of the stripe, and the data is only read from the data block which is pre-judged to be capable of successfully reading the data, so that the time for reading the data from the data block which cannot successfully read the data is saved,before the data is read, the data is prevented from being read from the data block of which the data cannot be successfully read based on the health degree of the strip obtained last time, so that thedata reading efficiency is improved.

Description

technical field [0001] The invention belongs to the field of data management, in particular to a data reading method and system. Background technique [0002] In a distributed storage system, all disks are managed uniformly, and each disk is divided into several data blocks according to a specific size. For example, each disk is divided into several data blocks according to the size of 4M, and each disk is divided into The obtained several data blocks are numbered starting from 0 to distinguish each data block. Combine at least two data blocks together to form a stripe. [0003] When reading data in a distributed system, after determining the data block that stores the data, read the data from the data block. When it is determined that reading data from the data block fails, pass through other data blocks in the strip where the data block is located Do a recovery read, resulting in long read times. And when it is necessary to read data from the data block that fails to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/182G06F16/172G06F16/18
CPCG06F16/172G06F16/182G06F16/1847
Inventor 徐佳宏李银李威青刘彬
Owner SHENZHEN IPANEL TECH LTD
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