Distributed storage memory management method and system and computer storage medium
A distributed storage and memory management technology, applied in the field of systems and computer storage media, and distributed storage memory management methods, can solve the problem that read and write operations cannot be completed efficiently, achieve easy concurrent out-of-order write operations, and deal with concurrent disorder. The effect of sequential write operations
Active Publication Date: 2017-11-07
SHANGHAI QINIU INFORMATION TECH
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Problems solved by technology
[0003] In the distributed storage system, the existing memory management method cannot efficiently complete the read and write operations on files by multiple machines
Method used
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[0050] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations as sequential processing, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure.
[0051] It should also be noted that in some alternative implementations, the functions / acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently or may sometimes be executed in the reverse order, depending upon the functionality / acts involved.
[0052] The present invention will be further described below in conjunction with the accompanying drawings and preferr...
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The invention discloses a distributed storage memory management method and system and a computer storage medium. The method comprises the steps that a memory management module is divided into various data block types of different sizes; a file is written into a first node, a lease is set for the file, and the file and the first node are bound; in a memory, the file corresponds to one data block type, the file is divided into one or more data blocks of the same size in the memory, meanwhile, the access context of the data blocks is generated, and the access context comprises a data block guide and a file code; the data blocks and the access context are stored in the first node, and a version is updated; when the file is written into a second node, and the lease of the file is possessed by the first node, the first node receives the file forwarded by the second node, and the file is written into the local storage of the first node, and the version is updated. Data is written on the basis of the data blocks, and the file can support random write in the distributed storage.
Description
technical field [0001] The present invention relates to the field of storage technology, and more specifically, to a distributed storage memory management method, system and computer storage medium. Background technique [0002] A distributed storage system stores data dispersedly on multiple independent devices. Traditional network storage systems use centralized storage servers to store all data. Storage servers become the bottleneck of system performance and the focus of reliability and security, which cannot meet the needs of large-scale storage applications. The distributed network storage system adopts a scalable system structure, uses multiple storage servers to share the storage load, and uses the location server to locate and store information. It not only improves the reliability, availability and access efficiency of the system, but also is easy to expand. [0003] In a distributed storage system, the existing memory management method cannot efficiently complete ...
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IPC IPC(8): G06F3/06
CPCG06F3/0604G06F3/061G06F3/064G06F3/067
Inventor 江汛洋梁松涛李道兵许式伟
Owner SHANGHAI QINIU INFORMATION TECH