Video stream data-orientated distributed storage system disc double-partition read-in method
A distributed storage and storage partition technology, which is applied to TV system components, color TV components, TVs, etc., can solve the problems of unstable disk I/O throughput, affecting storage system performance, speed differences, etc. Achieve the effect of overcoming unstable disk I/O throughput, ensuring write bandwidth, and reducing idle time
Active Publication Date: 2015-07-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0004] The purpose of the present invention is to provide a video stream data-oriented distributed storage system disk dual-partition writing method, which mainly solves the difference in the speed of the existing disk head when reading and writing on the inner circle and the outer circle of the disk, which causes the disk I / O throughput rate to be low. Stability, issues affecting storage system performance
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[0024] Such as figure 2 with image 3 As shown, the double partition writing method of a distributed storage system disk for video stream data includes the following steps:
[0025] A. Divide each disk on the data server into two logical partitions, one logical partition is a cache partition, and the other logical partition is a storage partition. Both the cache partition and the storage partition include multiple fixed-size disk blocks, and the two The disk blocks in each logical partition are sorted uniformly, the cache partition is used to handle concurrent writing of a large number of video streams, and the storage partition is used to stably store the data of the video stream;
[0026] B. When a video stream is written in the cache partition of a certain disk, the disk is marked as an online disk; and when there is no video stream written in the cache partition, the disk is called an offline disk;
[0027] C. Copy the data on the cache partition of the current disk to the stor...
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The invention discloses a video stream data-orientated distributed storage system disc double-partition read-in method. The method comprises the following steps: A, partitioning each disc into a cache partition and a storage partition, wherein the cache partition is used for processing concurrent read-in of mass video streams, and the storage partition is used for stabilizing the data of the video streams; B, when video stream read-in exists in the cache partition of a certain disc, marking the disc to be an online state disc; C, copying the data on the cache partition of the current disc to the storage partition of another disc at an offline state, wherein when no video stream is read in the cache partition of the disc, the disc is marked to be an offline state disc. The method overcomes the condition of unstable disc I / O (Input / Output) throughput rate caused by different read-write rates of the inner ring and the outer ring of a traditional mechanical disc. The method plays the characteristic of high I / O throughput rate of the cache partition fully, and high-speed stable read-in bandwidth can be guaranteed during video stream read-in. Moreover, the data storage is maintained by utilizing the storage partition, so that the waste of disc space is avoided.
Description
Technical field [0001] The invention relates to a double partition writing method for a distributed storage system disk of video stream data, belonging to the field of computer software, and relates to a distributed file system. Background technique [0002] Video surveillance technology has always occupied an important position in the development of smart transportation. In recent years, the storage technology of video surveillance data has been more and more severely tested with the denser distribution of front-end cameras and the high-definition of collected data. The existing video surveillance storage mainly adopts NVR storage solutions: centralized management and control through a central business platform, network video servers and IP cameras as the front end, and IPSAN / NAS network storage as the back end for deployment. As the front end of NVR storage, the pressure on the back-end storage brought by the HD of IP cameras is obvious. Take a 1080P (1920x1080) resolution, ...
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IPC IPC(8): H04N5/781
Inventor 段瀚聪闵革勇詹文翰郭辉程文静王瑾郑松
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA