Data synchronization method in upgrading process

Abstract

The invention discloses a data synchronization method during the process of software upgrade, and is mainly applied to the hot-standby systems of a mainframe and a main processor of the mainframe, a standby host and a standby processor of the standby host; the main processor is provided with a main data synchronization management module and a business module of the mainframe; the standby processor is provided with a standby data synchronization management module and a business module of the standby host; the method includes the steps as follows: step 1, description information in the data field of the standby host can be registered and sent to the standby host synchronously by the main data synchronization management module; description information in data field of the mainframe can be registered and sent to the mainframe synchronously by the standby data synchronization management module; step 2, after the business module of the mainframe send the contents of the data field to the standby host synchronously, the standby data synchronization management module carries out the reconstruction processing of the contents in the data field according to the description information in the data fields on the mainframe and the standby host; The invention realizes the seamless software upgrade of the hot-standby system during the process of the version upgrade of the mainframes and standby hosts.

Description

technical field [0001] The invention relates to data synchronization technology, in particular to a method for data synchronization in the software upgrade process in a dual-machine hot backup system. Background technique [0002] Dual-system hot backup is a widely used technology in systems that require high reliability. Dual-system hot backup can seamlessly switch the standby processor to be the main one in the event of a failure of the main processor. In the event of a point failure, the business of the entire system is guaranteed to be uninterrupted. This technology is widely used in communication and other fields. [0003] In a dual-machine system, in addition to running the same software program on the active and standby machines and having mutual status monitoring and active-standby switching logic, data synchronization is also an important part, because each business module needs to record a large number of intermediate data during operation. These data need to be ...

AI Technical Summary

Problems solved by technology

However, if the data area of ​​a business module in the old and new software versions changes, after the standby machine is upgraded, the data area of ​​the new version of the business module on the standby machine is inconsistent with that on the main machine, and the normal data synchronization mechanism cannot guarantee the correctness of data synchronization.

Since the standby machine that has been upgraded to the new version cannot obtain the data of the old version of the host machine correctly and in a timely manner, the hot backup between the main machine and the standby room will be incomplete. processing can also have unforeseen consequences

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