Disk dual-partition writing method for video streaming data in distributed storage system
A distributed storage and storage partition technology, applied to TV system components, color TV components, TVs, etc., can solve problems affecting storage system performance, disk I/O throughput instability, speed difference, etc. Achieve the effect of guaranteeing write bandwidth, overcoming instability of disk I/O throughput, and reducing idle time
Active Publication Date: 2018-11-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
[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 video stream data-oriented distributed storage system disk dual-partition writing method 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 uniformly sorted, 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 video stream data;
[0026] B. When a video stream is written to the cache partition of a disk, the disk is marked as an online disk; and when there is no video stream written to the cache partition, the disk is called an offline disk;
[0027] C. Copy the data on the cache partition of the current disk to another storage parti...
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The invention discloses a video stream data-oriented disk double-partition writing method for a distributed storage system. Including steps: A. Divide each disk into a cache partition and a storage partition. The cache partition is used to handle the concurrent writing of a large number of video streams, and the storage partition is used to stably store the data of the video stream; When the stream is written, the disk is marked as an online disk; C. The data on the cache partition of the current disk is copied to another storage partition of the offline disk, and when there is no video stream written in the cache partition of the disk, This disk is marked as an offline disk. The invention overcomes the situation that the disk I / O throughput rate is not stable due to the different reading and writing rates of the inner and outer rings of the traditional mechanical disk. It takes full advantage of the high I / O throughput of the cache partition, and can ensure high-speed and stable write bandwidth when writing video streams. At the same time, storage partitions are used to persist data and avoid wasting disk space.
Description
technical field [0001] The invention relates to a video stream data-oriented distributed storage system disk dual-partition writing method, belongs 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 intelligent transportation. In recent years, the storage technology of video surveillance data has been more and more severely tested with the intensive distribution of front-end cameras and the high-definition of collected data. The existing video surveillance storage mainly adopts NVR storage solution: centralized management and control through the central business platform, network video server and IP camera as the front end, and IPSAN / NAS network storage as the back end for deployment. As the front end of NVR storage, the high-definition IP camera brings pressure on background storage is obvious. Taking a video stream with 108...
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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