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A method and system for implementing storage snapshots

A snapshot and storage unit technology, applied in the field of network storage, can solve the problems of discrete read operation performance in the storage area, and achieve the effect of improving the efficiency of read operations

Active Publication Date: 2020-09-18
SUZHOU METABRAIN INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a method and system for implementing storage snapshots, to solve the problem that the storage area of ​​the original volume is scattered and the performance of the read operation is poor after multiple write redirections

Method used

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  • A method and system for implementing storage snapshots
  • A method and system for implementing storage snapshots
  • A method and system for implementing storage snapshots

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Embodiment Construction

[0036] In order to make the purposes, 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. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0037] Please refer to figure 1 , figure 1 It is a flow chart of a method for storing snapshots provided in the embodiment of the present application, and the technical solution is as follows:

[0038] S101: Set the granularity of data copy, and divide the storage area into granular areas according to the granularity;

[0039] First, set a granular...

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Abstract

The invention provides a method for achieving snapshot storage. The method comprises the steps of setting the data copying granularity, and dividing the granularity region for the storage region according to the granularity; after a snapshot volume is created, when novel data is written into an original volume, whether a storage unit corresponding to the novel data is pointed by a metadata pointer of the snapshot volume or not is judged; if yes, the novel granularity region is applied, data in the granularity region corresponding to the storage unit is copied to the novel granularity region; metadata of the original volume is modified, metadata pointers of the storage units in the granularity region are correspondingly pointed to the storage units in the novel granularity region, and the novel data is written into the corresponding storage unit in the novel granularity region. The novel copied to the novel granularity region still has continuity, and the read operation efficiency is improved. The invention further provides a system for achieving snapshot storage, and the system has the advantages.

Description

technical field [0001] The present application relates to the field of network storage, in particular to a method and system for implementing storage snapshots. Background technique [0002] The definition of storage snapshot technology given by the Global Network Storage Industry Association is a fully available copy of a specified data set, which includes an image of the corresponding data at a certain point in time (the point in time when the copy starts). A snapshot can be either a copy or a replica of the data it represents. [0003] At present, all storage systems, regardless of high-end, high-end and low-end, as long as they are applied to online systems, the snapshot function is an indispensable function. The role of snapshots is reflected in the following two aspects. First, it can perform online data backup and recovery. When the storage device has an application failure or a file is damaged, it can quickly recover the data and restore the data to a usable point...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/11G06F11/14
CPCG06F11/1448G06F16/128
Inventor 张振广
Owner SUZHOU METABRAIN INTELLIGENT TECH CO LTD
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