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Method and device for extracting metadata of file system based on selective scanning

A file system and metadata technology, which is applied in the direction of electronic digital data processing, special data processing applications, instruments, etc., can solve the problems of not being able to obtain source codes and being unable to be applied, so as to improve the efficiency of metadata extraction, save time, and reduce The effect of the number of directories

Active Publication Date: 2011-06-29
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even some commercial file systems cannot obtain the corresponding source code due to license restrictions, so this solution cannot be applied at all

Method used

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  • Method and device for extracting metadata of file system based on selective scanning
  • Method and device for extracting metadata of file system based on selective scanning
  • Method and device for extracting metadata of file system based on selective scanning

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Embodiment Construction

[0047] All embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be two The internal communication of each element may be directly connect...

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Abstract

The invention provides a method and device for extracting metadata of a file system based on selective scanning. The method comprises the following steps: A, defining a directory grouping mode; B, loading a directory group according to a scanning strategy; C, sorting and scanning directories; D, judging whether the scanning is completed, if not, selecting the directory to be scanned and initializing a subobject metadata list of the directories; E, judging whether the scanning is completed, if the scanning is not completed, reading the next subobject metadata and adding the metadata into the subobject metadata list, and updating a temporal locality directory group; F, if the scanning is completed, updating a time stamp variance directory group; and G, judging whether the current scanning is basic scanning, if the current scanning is the basic scanning, updating a subdirectory array of the current directory and executing the step D, and directly executing the step D if the current scanning is not the basic scanning. By applying the metadata extraction method in the embodiment of the invention, the extraction efficiency is greatly improved; besides, the method and device provided by the invention are simple in design and are easy to realize.

Description

technical field [0001] The invention relates to the field of plug-in metadata search technology, in particular to a method and device for extracting metadata from a file system based on selective scanning. Background technique [0002] The metadata of the file system includes the attributes of directories and ordinary files, as well as the directory structure and so on. The properties of a file include file name, permissions, time, file size, and index of data blocks. The attributes of a directory include directory name, authority, time, and directory content such as files and subdirectories contained in the above directory. [0003] With the increasing scale of modern file systems, file system metadata search plays an increasingly important role in storage management, and has gradually become one of the indispensable tools for administrators. Unlike desktop search systems, which are well known for data location and discovery, metadata search is primarily used by system ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 杨广文刘立坤武永卫黄小猛
Owner TSINGHUA UNIV
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