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Mirror image volume capacity reduction method and related device

A shrinking and mirroring technology, which is applied in the direction of instruments, electrical digital data processing, input/output to record carriers, etc., can solve the problems of reducing efficiency and low efficiency, so as to improve efficiency and effect, avoid IO interruption and delete remote copying relationship effect

Active Publication Date: 2021-01-26
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Claims
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Problems solved by technology

However, the efficiency is very low during the operation process, and the IO needs to be interrupted to delete the remote replication relationship, which reduces the efficiency of the remote replication process.

Method used

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  • Mirror image volume capacity reduction method and related device
  • Mirror image volume capacity reduction method and related device

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Embodiment Construction

[0044] The core of the present application is to provide a method for mirror volume shrinkage, a mirror volume shrinkage device, a server, and a computer-readable storage medium. Shrinkage processing is performed to realize shrinking of the mirrored volume instead of shrinking after disconnecting IO, avoiding IO interruption and improving the efficiency of remote replication.

[0045] 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 protec...

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Abstract

The invention discloses a mirror image volume capacity reduction method, which comprises the following steps of: when a remote replication relationship between a main volume and an auxiliary volume isin a consistent synchronization state, performing capacity reduction processing on the storage capacity and bitmap data of the main volume to obtain a capacity-reduced main volume; and when the capacity reduction processing of the main volume is completed, performing capacity reduction processing on the storage capacity and bitmap data of the auxiliary volume to obtain a capacity-reduced auxiliary volume. When the remote replication relationship is in the consistent synchronization state, the storage capacities and bitmap data of the main volume and the auxiliary volume are shrunk in sequence, so that the mirror image capacity is reduced instead of being expanded after IO is disconnected, IO interruption is avoided, and the remote copying efficiency is improved. The invention further discloses a mirror image volume reduction device, a server and a computer readable storage medium, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the technical field of data storage, and in particular to a mirror shrinkage method, a mirror shrinkage device, a server, and a computer-readable storage medium. Background technique [0002] With the continuous development of information technology, in order to improve the reliability and security of data storage, storage devices for different environments have emerged. Among them, remote replication is to copy product data to devices in remote locations for the purpose of data protection or disaster recovery. Remote replication may be performed synchronously or asynchronously. Synchronous replication writes data to both primary and secondary sites at the same time. With asynchronous replication, there is a delay before the data is written to the intermediate site. Because asynchronous replication is designed to work over greater distances and requires less bandwidth, it is often a better choice for disaster recov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0608G06F3/0638G06F3/067
Inventor 史薇李俭胡正建
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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