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Asynchronous remote replication method, system and device and computer readable storage medium

A technology of remote copying and computer programs, which is applied in the direction of data error detection and instrumentation for redundancy in calculations and operations, and can solve problems such as inability to achieve data synchronization, and achieve the effect of avoiding process card masters

Pending Publication Date: 2022-06-07
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After the asynchronous remote replication relationship is established, use bench (a general delay benchmark library) to write data to the master volume. When the cycle synchronization time is up, the slave volume will be incrementally synchronized, and md5sum will check the data consistency of the master and slave volumes; but when the master volume passes iscsi( When the Internet Small Computer System Interface (Internet Small Computer System Interface) is mounted, when the client writes a bare volume through the I / O workload generator or formats a file system and mounts a folder to copy data, data synchronization cannot be achieved

Method used

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  • Asynchronous remote replication method, system and device and computer readable storage medium
  • Asynchronous remote replication method, system and device and computer readable storage medium
  • Asynchronous remote replication method, system and device and computer readable storage medium

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Embodiment Construction

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The embodiment of the present invention discloses an asynchronous remote replication method, see figure 2 As shown, applied to the Iscsi mount scenario, the method includes:

[0037] S11: Read and write incremental data in the primary volume.

[0038] Specifically, after the primary volume has written the incremental data, data synchronization is performed, and the incremental data in the primary volume is read, so that the i...

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Abstract

The invention discloses an asynchronous remote replication method, system and device and a computer readable storage medium, is applied to an Iscsi mounting scene, and comprises the following steps: reading incremental data written into a main volume; judging whether the last object of the incremental data is an all-zero object or not; if yes, the throttle valve is controlled to finish the reading state; and backing up the incremental data to the slave volume. According to the method, whether the last object of the incremental data is the all-zero object or not is actively judged, if the last object of the incremental data is the all-zero object, the throttle valve is guided and controlled to end the reading state, infinite reading of the enhanced data is stopped, the process is prevented from getting stuck, a subsequent data synchronization state is entered, the subsequent data synchronization process is achieved, and the problem that when iscsi mounting is carried out, the data synchronization efficiency is high is solved. And master and slave volume periods are not synchronous.

Description

technical field [0001] The present invention relates to the field of data storage, and in particular, to an asynchronous remote replication method, system, device and computer-readable storage medium. Background technique [0002] Asynchronous remote replication is a way of data disaster recovery. Compared with synchronous remote replication, which synchronizes data in real time, it maximizes data consistency to reduce the amount of data loss when disasters occur. Asynchronous remote replication periodically synchronizes data, Minimize business performance degradation due to delays in remote data transmission. [0003] In the prior art, periodic synchronization is based on snapshots, and the process is as follows: when a pair relationship is created between the primary volume and the backup volume, snapshots are taken for the primary volume and the backup volume respectively. During the scheduled task, data will be written to the main volume from time to time. After the sch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1448G06F11/1458
Inventor 吴昊
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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