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RAID array reconstruction method and device

A technology for arraying and reconstructing data, which is applied in the direction of instruments, input/output to record carriers, and calculations. It can solve the problems of external video data writing loss, affecting normal storage business resource allocation, etc., and achieve the effect of improving the reconstruction speed

Active Publication Date: 2019-04-30
ZHEJIANG UNIVIEW TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a method and device for rebuilding a RAID array to solve the problems in the prior art that affect the resource allocation of normal storage services during the rebuilding process of a RAID5 array, resulting in the loss of writing of external video data, etc.

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  • RAID array reconstruction method and device

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Embodiment Construction

[0020] In order to facilitate the understanding of the present invention, the following will further explain and illustrate with specific embodiments in conjunction with the accompanying drawings, and the embodiments do not constitute a limitation to the protection scope of the present invention.

[0021] The RAID array reconstruction technical scheme provided by the invention is applied to the reconstruction of RAID5 arrays, and is mainly applied to storage systems in the field of video surveillance. see figure 1 , is an array interval model diagram based on multiple storage resource intervals in an embodiment of the present invention: In the technical solution of the present invention, the storage space of a RAID5 disk array is divided into non-storage resource intervals and multiple storage resource intervals, and each storage The resource intervals are all allocated to an external video source, and the external video source writes video data to the storage resource interva...

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Abstract

The invention provides a RAID array reconstruction method and device. The method comprises the following steps: when a RAID array starts the reconstruction of a reconstruction disk, obtaining an initial array address and partition size of each partition, wherein the partition is a resource storage section or a non-resource storage section, and data are written in each resource storage section by an external video source; when reconstructing the reconstruction disk, if video data are written in the resource storage section, determining an initial reconstruction position of the resource storage section according to the writing position of the external video source corresponding to the resource storage section for writing the video data at the first time; and selecting the resource storage section from a low address to a high address of the reconstruction disk, and gradually reconstructing the resource storage section of the reconstruction disk from two directions by using the video data and reconstruction stream. When the RAID array reconstruction method and device provided by the invention are used for reconstructing a RAID array, bidirectional reconstruction of the external video data and the reconstruction stream can be realized, so that the RAID reconstruction speed is greatly improved.

Description

technical field [0001] The invention relates to the technical field of video surveillance storage, in particular to a RAID (Redundant Arrays of Independent Disks, redundant array of independent disks) array reconstruction method and device. Background technique [0002] RAID5 technology is a block-interleaved distributed parity disk array, which divides and reconstructs data in units of stripes, and uses parity information to store redundant information. RAID5 stores the data and the corresponding parity information in different disks, and any N-1 disks store complete data, where N is the number of disks in the RAID5 array, so RAID5 can tolerate any one in the array Disk corruption without data loss. After a certain disk in the RAID5 array is damaged, if a hot spare disk is configured in the disk array, you can add the hot spare disk as a reconstruction disk to the RAID5 array, and then rebuild the reconstruction disk stripe by stripe. In the field of video surveillance st...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0629G06F3/0689
Inventor 成浩
Owner ZHEJIANG UNIVIEW TECH CO LTD
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