A virtual file system based on DAS architecture storage servers and a file management method thereof

Abstract

The invention provides a virtual file system based on DAS architecture storage servers and a file management method thereof. The virtual file system comprises a task management sub-system and a cache sub-system. The task management sub-system is used for receiving file operation tasks from request terminals and sending the tasks to the cache sub-system. If the task type of the file operation tasks is file reading tasks, the cache sub-system acquires to-be-read file data corresponding to the file operation tasks from a cache space, and sends the to-be-read file data to the task management sub-system; or if the task type of the file operation tasks is file writing tasks, the cache sub-system writes to-be-written file data corresponding to the file operation tasks into the cache space. The task management sub-system receives the to-be-read file data and sends the to-be-read file data to the request terminals. The virtual file system is provided with the cache sub-system which can process file operation tasks, so that repeated reading of disks or disk arrays can be prevented and the IO performance of the disks or disk arrays can be guaranteed.

Description

technical field [0001] The invention relates to the field of virtual file systems, in particular to a virtual file system based on a DAS architecture storage server and a file management method thereof. Background technique [0002] With the rapid development of the Internet and video technology, people's requirements for video quality continue to increase, resulting in an increase in the amount of video data transmission, and the video storage server is required to continuously increase the video read and write rate to meet the purpose of responding to user video read and write requests in a timely manner . Current disk storage servers mainly include three architectures: DAS, NAS and SAN. Among them, DAS (Direct Access Storage, that is, direct access storage) means that a storage device is directly connected to a computer through a SCSI interface or a fiber channel. NAS (Network Attached Storage) refers to connecting storage devices to a group of computers through a stand...

AI Technical Summary

Problems solved by technology

Even if a storage server with an existing DAS architecture is configured with a RAID card, if multiple users access the same video resource intensively, it will form an IO performance bottleneck for the entire storage server, causing tension on the disk that stores the video resource and affecting the IO of the storage server. performance

Moreover, even if multiple access requests do not access the same video resource but the video resources corresponding to multiple access requests are on the same disk, it may cause disk tension and affect the IO performance of the storage server

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