Data backup method and device, node equipment and readable storage medium

A node device, data backup technology, applied in electrical digital data processing, redundancy in computing, data error detection, response error generation, etc., can solve the problems of low data backup efficiency and untimely backup.

Pending Publication Date: 2020-10-27
BEIJING DIDI INFINITY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to at least overcome the above-mentioned deficiencies in the prior art, one of the purposes of this application is to provide a data backup method, ...

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  • Data backup method and device, node equipment and readable storage medium
  • Data backup method and device, node equipment and readable storage medium
  • Data backup method and device, node equipment and readable storage medium

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the appended The figures are only for the purpose of illustration and description, and are not used to limit the protection scope of the present application. Additionally, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented in accordance with some of the embodiments of this application. It should be understood that the operations of the flowcharts may be performed out of order, and steps that have no logical context may be performed in reverse order or concurrently. In addition, those skilled in the art may add one or more other oper...

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Abstract

The embodiment of the invention provides a data backup method and device, node equipment and a readable storage medium, and relates to the technical field of data storage. The data backup method comprises the steps that when it is detected that a database storage system where node equipment is located is upgraded, a log file and relay data information are backed up locally in the node equipment, and a hard link corresponding to the data file is backed up locally in the node equipment. The data volume occupied by the log file and the relay data information in the backed-up data is relatively small; data files which need to occupy a large amount of storage space are backed up by adopting hard links corresponding to the data files; due to the fact that the storage resources occupied by the hard link are very few, when data backup is carried out, the local storage resources of the node device can meet the requirement for data backup, the occupied I/O resources are few when backup data arewritten in, the time for completing writing is short, and instant backup of data files can be achieved.

Description

technical field [0001] The present application relates to the technical field of data storage, in particular, to a data backup method, device, node device and readable storage medium. Background technique [0002] At present, after the database storage system is upgraded, it may face risks such as data format incompatibility or data being deleted by mistake, resulting in data loss. Data loss is an important index to measure the performance of the database storage system, and it is an inevitable problem involved in the upgrade of the database storage system. In order to avoid data loss caused by the upgrade of the database storage system, it is necessary for the database storage system to have the functions of data security backup and data rollback after the upgrade. [0003] Most of the current data backup is to store data regularly in local storage media or remote storage media (such as Hadoop Distributed File System), but in the case of limited local storage resources, th...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1458G06F2201/80
Inventor 赵锐余汶龙
Owner BEIJING DIDI INFINITY TECH & DEV
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