Data migration method, device, electronic equipment and readable storage medium

Abstract

The invention discloses a data migration method, a device, electronic equipment and a readable storage medium. The method comprises the steps that a first storage pool and a second storage pool which are different in storage performance are constructed in advance, and the storage performance of the first storage pool is superior to that of the second storage pool; segmenting the target data into first sub-data and second sub-data, storing the first sub-data into a first storage pool, and storing the second sub-data into a second storage pool; when a migration instruction of target data is received, writing first sub-data read from the first storage pool into a second storage pool, and sending a request for updating storage position information of the target data to a metadata server; when the metadata server responds to update completion, the first sub-data is deleted from the first storage pool to complete the migration operation of the target data, so that the file migration error probability can be reduced on the basis of improving the file migration efficiency.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a data migration method, device, electronic equipment and readable storage medium. Background technique [0002] With the rapid development of computer technology, and it is widely used in daily work and life, various computer data has shown explosive growth, and correspondingly, storage technology has also been developed accordingly. In order to adapt to the fast and safe storage of data, the application of distributed file system was born. The distributed file system is a cluster composed of multiple file storage node servers. Files are stored in chunks, with objects as the basic unit. It supports a piece of data stored on multiple nodes, and each node can obtain complete files through inter-node communication. When the node is down, the complete data can be restored according to the configured strategy, which has the characteristics of high availability, high perf...

AI Technical Summary

Problems solved by technology

[0004] However, this kind of file layering is only applicable to the scenario where file data is stored in a single data pool. When files are stored in multiple data pools, the data that needs to be read, written, and deleted during file layered migration is different, and each step may Exceptions occur, that is, read errors, write errors, metadata modification errors, deletion errors, etc.

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