Data rollback method, device, equipment and storage medium

A data rollback and data technology, applied in the storage field, can solve problems such as long time spent and business suspension time, and achieve the effects of improving efficiency, reducing waiting time, and reducing the amount of data copying

Active Publication Date: 2020-02-14
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since this method needs to copy business data, it takes a long time for data rollback, resulting in a longer time for business suspension

Method used

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  • Data rollback method, device, equipment and storage medium
  • Data rollback method, device, equipment and storage medium
  • Data rollback method, device, equipment and storage medium

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] The present invention provides a data rollback method, such as figure 1 shown, including the following steps:

[0045] S101. After receiving the rollback instruction, determine the metadata to be rolled back according to the bitmap used to identify the metadata modified due to data redirection;

[0046] In actual operation, data redirection refers to business data redirection, that is, when the physical storage location of data changes, metadata stores...

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Abstract

The invention discloses a data rollback method, a device, equipment and a storage medium. The method comprises the following steps: determining to-be-rolled metadata according to a bitmap for identifying metadata modified due to data redirection after a rollback instruction is received; updating the to-be-rolled-back metadata stored in the snapshot volume to the source volume according to the determined storage position recorded in the to-be-rolled-back metadata; and resetting the identifier of the bitmap, and completing a rollback task. According to the method provided by the invention, whendata rollback is carried out, the service data in the snapshot volume does not need to be copied into the source volume, and only the metadata needs to be copied, so that the data rollback operation can be quickly completed, the waiting time and the data copying amount required for rolling back the data are greatly reduced, and the data rollback efficiency is effectively improved.

Description

technical field [0001] The present invention relates to the field of storage technology, in particular to a data rollback method, device, equipment and storage medium. Background technique [0002] For storage systems, data disaster recovery backup is the most basic function and purpose. There are many technologies and methods for data disaster recovery backup, and snapshot is one of the commonly used and efficient data backup methods. When data needs to be rolled back to a certain point in time, it is only necessary to find the snapshot at that point in time for recovery. [0003] At present, a common method is to copy the business data in the snapshot volume to the source volume, so as to achieve the purpose of data rollback. However, since this method needs to copy business data, it takes a long time for data rollback, resulting in a longer time for business suspension. [0004] Therefore, how to quickly complete the data rollback operation is a technical problem to be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1469G06F11/1471
Inventor 蒋米传
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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