Data replication method and device based on main and auxiliary volumes and medium

A technology of data replication, primary and secondary volumes, applied to redundancy in computing for data error detection, electrical digital data processing, and response error generation, etc., can solve the problem that the system performance requirements cannot be met, and data synchronous replication cannot be successfully completed. And other issues

Inactive Publication Date: 2021-01-26
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the system carries many services, the current processing performance of the system may not meet the system performance re...

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  • Data replication method and device based on main and auxiliary volumes and medium
  • Data replication method and device based on main and auxiliary volumes and medium
  • Data replication method and device based on main and auxiliary volumes and medium

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0048] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] Next, a data replication method based on primary and secondary volumes provided by an embodiment of the present invention will be described in detail. figure 1 A flow chart of a data replicati...

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Abstract

The embodiment of the invention discloses a data copying method and device based on main and auxiliary volumes and a medium. The method comprises the steps: recording the processing duration of each IO; obtaining the IO proportion values of which the processing duration is greater than or equal to a preset threshold in the period time, wherein the IO proportion value reflects the overall performance of the system in the cycle time, and the higher the IO proportion value is, the poorer the current processing performance of the system is; when the IO proportion value meets a preset performance requirement, switching the current synchronous copy mode or asynchronous copy mode into a periodic asynchronous copy mode, wherein the periodic asynchronous replication mode is to synchronize the difference data generated on the main volume to the auxiliary volume according to a bitmap based on a preset periodic replication time. Compared with a traditional synchronous replication mode and asynchronous replication mode, the requirement of the periodic asynchronous replication mode on the performance of the system is greatly reduced, and the system is automatically switched to the periodic asynchronous replication mode under the condition that the performance of the system is reduced and the smooth completion of asynchronous replication cannot be guaranteed, so that the reliability of data backup is improved.

Description

technical field [0001] The present invention relates to the technical field of data storage, in particular to a data replication method, device and computer-readable storage medium based on primary and secondary volumes. Background technique [0002] The remote copy relationship defines the relationship between volumes, usually one volume is designated as the primary volume, and the other is designated as the secondary volume. The host application writes data to the primary volume and does not run input / output (IO) operations on the secondary volume. Although the data is only written to one volume, the system copies the data to the other volume. In case of disaster recovery, the copy on another volume can be used as a backup. [0003] Remote replication includes synchronous replication and asynchronous replication. Synchronous replication means that after the host data is written to the primary volume, the data is synchronized to the secondary volume at the same time, and...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1461G06F11/1448
Inventor 胡正建
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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