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Snapshot creation method and device, equipment and storage medium

A snapshot and target storage technology, applied in the computer field, can solve the problems of poor data reliability and low data recovery accuracy, and achieve the effect of high reliability and improved accuracy

Pending Publication Date: 2022-04-12
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on this method, when creating a snapshot, the data actually stored in the storage unit may be inconsistent with the data that should be stored in theory, and the reliability of the data in the snapshot created by the storage unit is poor, and the accuracy of data recovery based on the created snapshot lower sex

Method used

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  • Snapshot creation method and device, equipment and storage medium
  • Snapshot creation method and device, equipment and storage medium
  • Snapshot creation method and device, equipment and storage medium

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Embodiment Construction

[0039] 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.

[0040] In order to facilitate the understanding of the technical process of the embodiment of the present application, the nouns involved in the embodiment of the present application are explained below:

[0041] Snapshot: The Storage Networking Industry Association (SNIA) defines a snapshot as: a snapshot is a fully available copy of a specified data set, which includes the corresponding data at a certain point in time (the point in time when the copy starts) image. A snapshot can be a copy (or replica) of data. A snapshot is a data backup of a storage unit at a certain moment, and data writing and modification in the storage unit will not affect the created snapshot. Based on this feature, users can use snapshots to record da...

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PUM

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Abstract

The invention discloses a snapshot creation method and device, equipment and a storage medium. The method comprises the following steps: acquiring a snapshot creation request, wherein the snapshot creation request is used for indicating to create a snapshot for at least one target storage unit; based on the snapshot creation request, the global state of the system is set to be a writing forbidding state, and the writing forbidding state is used for indicating blocking of data writing operations corresponding to all the storage units; executing memory data synchronization operation on the at least one target storage unit based on the write forbidding state; and creating a snapshot for the at least one target storage unit executing the memory data synchronization operation. Based on the above mode, when the snapshot is created, the data actually stored in the target storage unit is completely consistent with the data which should be theoretically stored, so that the reliability of the data in the snapshot created for the target storage unit can be improved, the backup effect of the data in the database can be improved, and the backup efficiency of the data in the database can be improved. And the accuracy of data recovery based on the created snapshot can be improved.

Description

technical field [0001] The embodiments of the present application relate to the field of computer technology, and in particular to a method, device, device, and storage medium for creating a snapshot. Background technique [0002] A snapshot is a fully available copy of a specified data set in a database, which includes an image of the corresponding data at a certain point in time. Snapshot technology is an effective data protection method, which can quickly realize data backup. When an application failure or file damage occurs in a storage unit, data recovery can be performed based on the snapshot technology. [0003] In related technologies, after receiving a snapshot creation request from a terminal, the server directly creates a snapshot for a storage unit to be created. Based on this method, when creating a snapshot, the data actually stored in the storage unit may be inconsistent with the data that should be stored in theory, and the reliability of the data in the sn...

Claims

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Application Information

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IPC IPC(8): G06F16/11G06F11/14G06F16/23
Inventor 金振成
Owner TENCENT TECH (SHENZHEN) CO LTD