Remote replication increment synchronization method and device for distributed block storage system

Abstract

The invention discloses a remote replication increment synchronization method and device for a distributed block storage system, and the method comprises the steps: selecting a far-end cluster logic volume for a local logic volume to create a master-slave relation, enabling the local logic volume to be a master logic volume, and enabling the far-end cluster logic volume to be a slave logic volume;periodically creating snapshots in the main logical volume; setting a certain snapshot created before the far-end cluster breaks down as a source snapshot; after the far-end cluster is recovered, comparing the source snapshot with the data of the current main logical volume to find out difference data needing to be exported; and importing the difference data to be exported into the slave logicalvolume. According to the invention, the data replication time is shortened, the influence on the system is reduced, an efficient differential data synchronization solution is provided for the remote disaster recovery backup system of the storage system, the reliability, the sustainability and the high availability of user data are improved, and huge loss of a production system caused by disasterswhich cannot be prevented is avoided.

Description

technical field [0001] The invention relates to the field of remote replication of a distributed block storage system, in particular to a remote replication incremental synchronization method and device for a distributed block storage system. Background technique [0002] With the advancement of digitalization in various industries, data has gradually become the core of enterprise operations, and users have higher and higher requirements for the stability of storage systems that carry data. Although enterprises can have highly stable storage devices, it is still impossible to prevent various natural disasters from causing unrecoverable damage to production systems. In order to ensure the continuity, recoverability and high availability of business data, remote disaster recovery and backup solutions emerged as the times require, and remote replication technology is one of the key technologies in remote disaster recovery and backup solutions. [0003] When the remote cluster ...

AI Technical Summary

Problems solved by technology

[0003] When the remote cluster fails during remote replication, the local cluster still needs to provide business support for users. When the remote cluster recovers, the data in the two places will inevitably be inconsistent. If the amount of local data is too large to reach the PB level, it will consume a lot of manpower, material resources and time. It may take several days to synchronize data, which will definitely cause huge losses to the user system.

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