Storing and repairing method and storing and repairing device for repairable video monitoring data

Abstract

The invention relates to the field of video storage, and discloses a storing and repairing method and a storing and repairing device for repairable video monitoring data. By using the storing and repairing method, positions of metadata, index files and video recording files of a file system on a magnetic disk are fixed according to characteristics of video storage; when the file system is damaged, the metadata of the file system are reestablished by a preset rule, and the original pre-distributed file is recovered; and because the positions of the file data in the magnetic disk are not changed, the data which are written in the magnetic disk cannot be lost. The storing and repairing method can support different file systems, and does not depend on the metadata of the original file system; and monitoring software is not required to be written in the magnetic disk, extra backup space is not required, and the video data can be repaired. A partition formatting mode of the magnetic disk is fixed according to specifications of different file systems; and data layouts formed by formatting at different times are the same as long as the data are in the same partition of the magnetic disk.

Description

technical field [0001] The invention relates to the field of video storage, in particular to a video monitoring data restoration technology. Background technique [0002] The video surveillance system has basically completed the evolution from analog to digital. With the continuous expansion of surveillance scale, the data capacity of video storage is also increasing. It is not uncommon for video data to be lost due to file system corruption on storage devices. Especially with the large-scale application of IP storage devices such as IP-SAN and NAS, the problem of file system metadata update errors caused by IP network failures, which in turn causes damage and loss of video data files, is very prominent. This is a high-reliability The video storage system must be resolved. [0003] The relevant patents for data restoration are mainly aimed at specific file systems, such as the patent No. US20050144501A1, which solves the problem of extracting superblocks, i-node bitmaps, an...

AI Technical Summary

Problems solved by technology

[0004] 1. If some metadata information in the file system has been overwritten by abnormal data, the restored data will be incomplete;

[0005] 2. Only for a specific file system, not compatible with both Windows and Linux

[0007] 1. Need to run additional disk write monitoring software;

[0008] 2. Additional storage space is required for data backup

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