A method, device and system for ensuring application consistency

Abstract

Embodiments of the present invention provide a method, device, and system for ensuring application consistency, which relate to the computer field and can implement snapshots for data volumes of containers used by applications to ensure that data protection services provided by containers achieve application consistency. The method for ensuring application consistency includes: the first node receives data protection information, and the data protection information is used to request data protection of the first application; the first node sends data synchronization information to the second node according to the data protection information, and the data synchronization information It is used to instruct the second node to store the data of the first application in the data volume of the container used by the first application according to the first correspondence; the first node sends execution snapshot information to the second node, and the execution snapshot information is used to indicate that the first application The second node executes a snapshot on the data volume of the container used by the first application to obtain the first snapshot; or the first node executes the snapshot on the data volume of the container used by the first application to obtain the first snapshot.

Description

technical field [0001] The embodiments of the present invention relate to the computer field, and in particular to a method, device and system for ensuring application consistency. Background technique [0002] The emergence of virtualization technology has changed the mode of modern computing. It can improve the utilization efficiency of computer system resources, eliminate the dependencies between applications and underlying hardware, and at the same time enhance the portability and security of loads. Containers and virtual machines are currently two mainstream computing virtualization technologies. Among them, containers have attracted widespread attention due to their advantages such as light weight, high mobility, high hardware density, and more efficient life cycle management. [0003] Containers need to be protected when they are in use (for example, backups, snapshots, recovery from application failures or disasters, etc.), so the data protection services provided by...

AI Technical Summary

Problems solved by technology

from figure 1 It can be seen that the crash consistency can only guarantee the file consistency of the application using the container, but cannot guarantee the cache consistency of the application; while the application consistency can not only ensure the file consistency of the application, but also the cache consistency of the application sex

For example, if the consistency level of application A is crash consistency, when the application fails, the data protection service provided by the container can only restore the files of the application, but cannot restore the cache of the application, which will cause the application cache data loss, or even cause more serious failures (for example, the application cannot be started due to inconsistent storage configuration, etc.)

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