Compressed volume metadata management method, system and device and storage medium

Abstract

The invention discloses a compressed volume metadata management method, system and device and a computer readable storage medium, and the method comprises the steps of: when metadata stored in a compressed volume of a main node meets a backup condition, enabling the main node to back up the metadata in the compressed volume to a standby node; judging whether the master node fails or not; and if the main node fails, enabling the standby node to take over the volume service which the main node is responsible for. According to the method, the main node and the standby node are arranged, and the main node synchronizes the metadata in the compressed volume to the standby node at any time before the fault, so that the standby node takes over the volume service before the fault of the main node according to the metadata synchronized with the main node after the fault of the main node, the volume service can continuously and stably run at any time, and the reliability of the system is improved.

Description

technical field [0001] The present invention relates to the field of storage systems, in particular to a compression volume metadata management method, system, device and computer-readable storage medium. Background technique [0002] With the development of information industrialization, the amount of information data is increasing significantly, and the scale of data that needs to be stored is getting larger and larger, which puts forward higher requirements for the capacity of storage devices, and the cost is also increasing. Data reduction has become an important business content in storage, and compression is an important technical means in the data reduction solution. The value of data is immeasurable, and ensuring the reliability of data is the first priority of storage. Since compressed volumes are more complex than ordinary data volumes, complex metadata management solutions are required to ensure data reliability and performance. [0003] Currently, the existing ...

AI Technical Summary

Problems solved by technology

Each volume needs metadata to manage and maintain. The current solution is to use single-node metadata. The metadata between two nodes cannot see each other. Therefore, when a single node fails and volume node migration occurs, The node that takes over does not have the metadata of the volume, so the node that takes over cannot directly operate the volume, and the volume business cannot return to normal for a long time

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