Data synchronization method and system

Abstract

The invention discloses a data synchronization method and system, and belongs to the technical field of storage. The method comprises the following steps: receiving a data synchronization request sentby a master server; analyzing the data synchronization request, and obtaining first memory block identification information and to-be-synchronized data, the first memory block being a memory block inwhich data change occurs in a memory pool of a main server; obtaining a second memory block head address corresponding to the first memory block identification information in a local memory pool; andsynchronizing the to-be-synchronized data to a second memory block corresponding to the head address of the second memory block in a local memory pool. According to the invention, the addresses of the memory blocks in the memory pools corresponding to the main server and the standby server are consistent; the data in the memory block with the data change of the master server is directly copied tothe corresponding memory block in the standby server, the data synchronization process is transparent to the upper layer logic of the master server, the code of the original function logic does not need to be damaged, and the universality is high.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a method and system for synchronizing data. Background technique [0002] The computer disaster recovery system is an environment that can cope with various disasters. When the computer system suffers from irresistible natural disasters such as fire, flood, earthquake, war, etc., as well as man-made disasters such as computer crime, computer virus, power failure, network / communication failure, hardware / software error, and human error, the disaster recovery system It will ensure the security of user data, also known as data disaster recovery. [0003] The current solution for data disaster recovery is mainly the master-slave hot backup mechanism, that is, under normal circumstances, the master server provides services, and the slave server (also called the backup server) does not provide services. When the master server fails, it will switch to the slave server. server to provi...

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Problems solved by technology

[0006] In related technologies, the data synchronization scheme is logically coupled with the upper layer of the primary server, and cannot be generalized

The master server needs to encapsulate the corresponding change data for each protocol. When the slave server processes the synchronization protocol, it also needs to pay attention to the logic implementation of the corresponding function block. The sub-coroutines are divided into two modes. Since each sub-coroutine is relatively independent, it is difficult to use and it is very destructive to the code of the original logic function.

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