Disk protecting method and device

Abstract

The invention provides a disk protecting device applied to a computer system. The device comprises a formatting unit, a list loading unit and an index updating unit, wherein the formatting unit is used for formatting the storage space of a disk into a secondary index structure according to planning of a user, wherein the formatted storage space comprises a plurality of primary index areas; the list loading unit is used for storing address information of each primary index area into an index list of a memory; and the index updating unit is used for selecting the next primary index area as the current primary index area in a cyclic mode when the index record in the memory is required to be updated to the primary index area every time, finding the current primary index area according to the address information in the index list and updating the index record of the current primary index area so as to disperse update of the primary index areas to a plurality of disk areas. Through the device, the problem that faults of the disk or a magnetic track are easily caused by frequent update of the primary index areas is effectively solved in the cyclic updating mode in the secondary index structure.

Description

technical field [0001] The invention relates to a disk index file structure technology, in particular to a method and device for realizing disk protection through a secondary index structure. Background technique [0002] In the field of IP surveillance storage, it is a common networking method for the front-end camera to mount the remote IPSAN device through iSCSI. If the intermediate network is abnormal, it is easy to cause the locally mounted node to be read-only, and it is also easy to cause the file system to be damaged or the disk to have bad sectors. Aiming at such problems, most of the existing solutions start with how to avoid disk or file system abnormalities. For example, fixed files are established first on the basis of the file system, and then index information of these fixed files is established at the beginning position of the file system. Since the fixed file is established at the beginning, the file system does not need to update the system index area too...

AI Technical Summary

Problems solved by technology

However, if the index area is established at the beginning, the track where the index area is located will easily become a hotspot for access, which increases the risk of disk failure.

Moreover, once an abnormality occurs in the file index area or the data area, the existing technology does not have a mechanism for recovering or removing damaged tracks.

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