A hard disk migration method, distributed storage cluster system and storage medium

Abstract

The application discloses a hard disk migration method, a distributed storage cluster system and a storage medium. The method is applied to a metadata server, which includes: establishing correspondence among user files, data node information, hard disk information, and data block storage information , get the data relationship table, and store it; after receiving the hard disk migration command, the data block in the hard disk to be migrated is restricted by the current data node server, and the current data node server is the data node server where the hard disk to be migrated is currently located; After the hard disk migration is completed, the update information reported by the new data node server is received. The new data node server is the data node server where the hard disk to be migrated is pre-migrated; based on the update information, the information corresponding to the hard disk to be migrated in the data relationship table is updated. And remove the restrictions on the data blocks in the hard disk to be migrated. Through the above method, the present application can improve the reliability and availability of the distributed storage cluster system.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a hard disk migration method, a distributed storage cluster system and a storage medium. Background technique [0002] In the distributed storage cluster system, each data node server and its hard disk will be assigned the unique tag information of the cluster by the metadata server when it goes online for the first time, so as to support the migration of the physical location of the data node server and hard disk within the cluster , that is, as long as the cluster identifier carried by the data node server and the hard disk has not changed, they can be sensed by the metadata server of the cluster to ensure the integrity of the cluster data during the hard disk migration process. [0003] At present, some hard disk migration solutions have the following disadvantages: 1) If the memory partition is damaged before the hard disk migration, the hard disk informat...

AI Technical Summary

Problems solved by technology

[0003] At present, some hard disk migration solutions have the following disadvantages: 1) If the memory partition is damaged before the hard disk migration, the hard disk information in the data node server cannot be cleared, and the hard disk migration cannot be completed; 2) The flat design of the storage cluster makes writing Incoming business performance is poor

Some technical solutions have the following problems: 1) In the case of a large number of hard disk migrations, the pressure on node performance and memory is high, which will affect the normal business of the cluster in serious cases; 2) During the hard disk migration process, due to the offline hard disk Invalid data blocks will not be updated until the hard disk migration is completed and the data blocks are fully reported. During this period, the business layer will fail to read the file, which will affect the user experience; 3) In the hard disk migration During the process, the data node server needs to report all file storage information in the hard disk to the metadata server, resulting in a large communication protocol package for data block reporting, which takes up too much system bandwidth and memory resources

Images