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

A virtual machine mirroring and storage system technology, applied in the transmission system, software simulation/interpretation/simulation, electrical components, etc., can solve problems such as not supporting random writing, limiting virtual machine applications, and large data access delays

Inactive Publication Date: 2014-01-29
南京大学镇江高新技术研究院 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the existing HDFS implementation has problems such as large data access delay and doe

Method used

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

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Embodiment Construction

[0055] The present invention provides an HDFS-based virtual machine image storage system and its construction method. In order to better illustrate its design and implementation method, the following will be described in detail in conjunction with the accompanying drawings.

[0056] Such as figure 1 It is an architecture diagram of a virtual machine image storage system based on HDFS. The whole system is divided into three parts:

[0057] 1) Virtualized server layer. Based on the virtualization cluster constructed by Xen, the virtual machine is responsible for maintaining the system state and memory environment by its physical server during operation, and its disk realized by mirroring will be stored in the shared storage system, that is, the HDFS distribution adopted by the present invention format file system. The virtual machine implements dynamic migration in HDFS as the storage bottom layer, which can greatly improve the migration time, and realize the flexible allocati...

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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...

Claims

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Application Information

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IPC IPC(8): G06F9/455G06F3/06H04L29/08
Inventor 牟权叶保留李东辉吴小志
Owner 南京大学镇江高新技术研究院
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