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Optical disc juke-box file system and equipment thereof

A file system, optical disc library technology, applied in optical recording/reproducing/erasing methods, recording information storage, instruments, etc., can solve problems such as only query, inaccessible, and inability to manage optical disc files

Inactive Publication Date: 2014-12-17
叶小仁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The file service it provides is limited to the disc images that have been loaded into the hard disk, and cannot be accessed for unloaded discs. For systems whose disc library capacity is much larger than that of the hard drive, this service is incomplete
[0007] In addition, at present, optical discs are divided into non-rewritable, one-time rewritable, and multiple rewritable discs, but multi-rewritable discs also have a certain limit on the number of rewritable times, and most of the discs in the disc library are not in the optical drive, but are stored in On the disc tray, the optical drive is loaded by the robot when needed, which usually takes a few seconds
Since CDs cannot be rewritten frequently and randomly like hard disks, the file management of CDs cannot be done like hard disks.
[0008] In order to solve the above problems, the present invention proposes a CD library file system and its equipment, which are used to provide the file access service and CD management of the CD library. It can construct the entire CD library including offline CD files into a file system, providing Standard file access interface, but for offline CDs, only the file directory information of offline CDs can be queried

Method used

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  • Optical disc juke-box file system and equipment thereof
  • Optical disc juke-box file system and equipment thereof
  • Optical disc juke-box file system and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: the specific embodiment of the user mode CD library file system

[0039] The block diagram of the user-mode CD-ROM library file system and its equipment is as follows: figure 1As shown, it consists of the CD library file system 100 under the user state, the user state file system client 410, the operating system file interface API310, the system management module 610 and the local file operation 510, the remote file operation FTP server 520, the HTTP server 530 and SMB server 540 modules are made up, and wherein optical disc library file system 100 is made up of optical disc library management data module 110, optical disc library file system control module 120 and optical disc manipulator controller 130; module 420 , CD file system 330 and other file systems 340 ; finally, it also includes hardware equipment CD robot 210 , CD drive, CD 230 and CD rack 240 .

[0040] The functions of each module of the CD library file system 100 are described as follows: ...

Embodiment 2

[0099] Embodiment 2: The specific embodiment of the two-level file system and its equipment in the kernel state optical disc library

[0100] Such as figure 2 , the optical disk file system 330 and other file systems 340 are mounted on the VFS 320, and are in the same level relationship with the optical disk library file system 100, and the paths of these file systems can be seen in the system. When the optical disc library file system 100 needs to access files, it obtains the files from the optical disc file system 330 or other file systems 340 through the VFS320. This way does not need to directly manage the optical disk file system 330 or other file systems 340, and is simple to implement. In terms of efficiency, since this embodiment does not need to cross the boundary between the kernel state and the user state twice, its efficiency is higher than that of the user state file system, but in this embodiment, a file access needs to go through VFS320 twice, and its efficien...

Embodiment 3

[0102] Embodiment 3: The specific embodiment of the three-level file system and its equipment in the kernel state optical disc library

[0103] Such as image 3 , the optical disc file system 330 and other file systems 340 are mounted on the optical disc library file system 100 and are directly managed by the optical disc library file system 100. The optical disc library file system 100 is in a superior-subordinate relationship with these underlying file systems. The VFS320 acts as a bridge between these underlying file systems, that is, in the view of the VFS320, the optical disc library file system 100 is a common file system, and in the view of the underlying file systems, the optical disc library file system 100 is a VFS320. In this implementation, the path of the underlying file system cannot be directly seen in the root directory. When the optical disc library file system 100 needs to access files, it obtains them from the underlying file system. This method is complic...

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Abstract

The invention discloses an optical disc juke-box file system and equipment thereof, and relates to the data storage field. The system comprises a file system control module, a manipulator controller and an optical disc juke-box management data module, wherein the file system control module manages and accesses a logical underlying file system to finish file management and provide file access service; under the control of the file system control module, the manipulator controller fetches an optical disc from an optical disc holder to a CD driver or fetches the optical disc from the CD driver to the optical disc holder through a manipulator; and the optical disc juke-box management data module provides file catalogue information in all optical discs of the optical disc juke-box and the position information of all optical discs. When a user accesses an optical disc file on an optical disc holder, a file system controller obtains the number of the optical disc where the file is stored from the file catalogue information, obtains the position of the optical disc from an optical disc table and controls the manipulator to fetch the optical disc to an idle CD driver to obtain the file. Optical disc juke-box file and optical disc management problems are solved, and the invention can be used for providing an optical disc juke-box NAS (Network Attached Storage) server.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a file management method and equipment for an optical disc library. Background technique [0002] At present, mainstream data storage technologies include flash memory, hard disk, optical disk, magnetic tape and so on. With the development of Blu-ray disc technology, the current capacity of Blu-ray disc has reached 200G per disc, and disc storage has the advantages of low price and long life. Under the background of big data, disc storage technology has a good application prospect. [0003] As a large-capacity data storage device, the optical disc library can be used in various fields, such as bank bill image storage, insurance agency data storage, and all other large-capacity near-line and offline data storage occasions. [0004] The network optical disc library is composed of a disc rack for placing optical discs, a disc changing robot, an optical drive or an array of opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B17/22G11B7/004
Inventor 叶小仁
Owner 叶小仁