HDFS-based virtual machine image storage system and construction method thereof

Abstract

The invention discloses an HDFS-based virtual machine image storage system and a construction method thereof. The system comprises a virtual server, a management server, an HDFS storage node, a storage space manager, a read-write locating manager and an image data manager, wherein the storage space manager, the read-write locating manager and the image data manager are deployed in the storage management server. The method includes: the storage space manager is responsible of managing the disk organization form of storage space to finish storage of a great amount of virtual machine images; the read-write locating manager receives a virtual machine image operating command and randomly reads and writes specific images according to the metadata organization form; the image data manager is responsible of managing virtual machine image metadata and file content and organizes the image file content through the specific metadata structure. The HDFS-based virtual machine image storage system and the construction method thereof have the advantages that the HDFS has the limitation in supporting random file writing, a distributed fault-tolerance cloud storage mechanism of virtual machine image dynamic operation is achieved, reliability in data storage and access is improved, and the cost is reduced.

Description

[0001] technical field [0002] The present invention relates to a large-scale virtual machine image storage system based on HDFS (Hadoop Distributed File System, Hadoop Distributed File System), specifically divides the virtual machine image into multiple segment files and stores them in the HDFS distributed file system, and combines The sequential writing feature of the log-structured file system enables random writing of HDFS files and provides support for dynamic access to virtual machine image data. Background technique [0003] With the rapid growth of dynamic resource requirements of Internet applications, effective integration of servers based on virtualization technology can realize dynamic packaging of servers and load balancing during operation, effectively reducing costs. The storage mode of the current mainstream virtualization technology is difficult to meet the needs of practical applications: on the one hand, high-speed storage devices are expensive, the ener...

AI Technical Summary

Problems solved by technology

However, the existing HDFS implementation has problems such as large data access delay and does not support random writing, which limits the application of virtual machine storage support.

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