JPH01318123A - File server - Google Patents

Abstract

PURPOSE:To automatically update a self-file at the time of updating a remote file by transferring a file concerned from the other system at the time of updating a directory in the other area to update the self-file. CONSTITUTION:A file system is connected to an LAN 1 and provided with a file server 2 for storing and controlling files and a work station 3 for executing the retrieval of files, document formation, data processing, and the like. In the server 2, a file storage device 4 stores files and a processor 5 controls the storage, sending, etc., of the files in the device 4 based upon an instruction generated from the station 3. A file updating means 6 calls a directory in the other file system when the operating state of the self-file system is low at a set time, lists the contents of the called directory and the contents of a corresponding direction in the self-file system, compares these lists, and only when the contents of the file system in another area is already updated, the self-file is updated on the basis of the transfer contents.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a computer network connected to a computer network, a local area network (hereinafter referred to as LAN), etc.
It relates to a file server that centrally manages shared data.

(Prior Art) In recent years, the construction of systems that cover wide areas has become popular through file systems connected by computer networks and connections between LANs. Data managed by a file system can also be used via a network.In this case, if the network is very wide, there are many communication lines connecting the networks, and the entire Therefore, it is also common practice to copy and save files located far away as much as the capacity of a file server connected to one's own LAN allows.

(Problem to be solved by the invention) By the way, data stored in files located far away is often updated without contacting other regions.For this reason, conventionally, files stored in one's own file server are There is a problem that programs are often created using the files without knowing that the contents of the files have been updated, and it takes a lot of effort and time to modify the programs. This problem poses a major obstacle to software development.

This invention was made in view of the above-mentioned circumstances, and aims to provide a data storage device that automatically updates the contents of its own file even if the contents of a distant file are updated without notification. .

[Means and effects for solving the problem] The present invention provides a file storage device that is connected to a data transmission network and includes a file storage device that stores files, and a processing device that manages files stored in this file storage device. In a server, when the operating status of its own file server is low, it calls up a directory stored in a file system in another region, lists the contents of this directory, and also lists the contents of the directory stored in its own file storage device. Compare and update the contents of other regional directories
When a new file, etc. has been added, a file update device must be installed that requests the file system in another region to transfer the file and updates the contents of its own file based on the transferred file. Even if the contents of files in other regions are updated without notification,
It is designed to automatically update the contents of its own files.

〔Example〕

FIG. 1 is a v4 block diagram showing an embodiment of a file system equipped with a file server according to the present invention.

This file system is connected to a LAN 1 and includes a file server 2 that stores and manages files, and a workstation 3 that performs file searches, expense creation, data management, etc.

The file server 2 includes a file storage device 4 that stores files, and stores files stored in the file storage device 4 based on instructions from the workstation 3.
The processing device 5, which manages sending etc., determines the operating status of its own file system at a set time, and when the operating status is low, it calls a directory saved in another file system specified in advance, and After listing the contents of the directory, listing the contents of the directory in your own file system that corresponds to this directory, and comparing the two lists,
When the contents of a file system in another region are being updated, a file update device that sends a request to transfer the file to the file system in another region and updates the contents of its own file based on the transferred file. It is composed of 6.

Note that the processing device 5 and file update device 6 are cp
It consists of peripheral circuits whose main components are a central processing unit, a main memory device, and an auxiliary memory device.

Next, the processing operation of the file update device 6 in the seven-family file server 2 will be explained based on the flowchart shown in FIG.

FIG. 2 is a flowchart showing the processing operation of the file updater device e16.

First, the file update device et6 determines whether the file system is busy with its original business at a preset time (step 101). When the operating status is low and processing capacity is available, a remote file system whose address is specified in advance using the keyboard (not shown) of the workstation 3 and a directory stored in this file system exist. If so, the contents of the directory of the specified file system are listed (step 103). Note that the list created at this time is called list (A>).Next, the contents of the directory stored in the own file storage device 4 and corresponding to the list (A>) are listed (step 104). Let the list created at this time be list (8).And,
List (A) and list (B) are compared to create a difference between the two lists (step 105). Next, Sust (A
) contains files that are not in list (B) or files that are not in list (B)
It is determined whether or not there is a file with a newer creation date (step 106), and if so, a request is made to the remote file system to transfer the corresponding file (step 107). Then, step 109 updates the contents of the own file based on the transferred file.
), after storing the updated file in the file storage device 4 (step 109), the program stops for a certain period of time and then returns to step 1.
10), Execute the next file update again.

This file update device 6 uses clock means (not shown) to
The file system is set to operate at a time when the operating status is relatively low, for example at midnight, and a constant 51! l!
l! f! After performing the operation, it pauses for a certain period of time (for example, 24 hours), and then starts the operation again from step 101. Therefore, it does not interfere with the operations of its own file system, and the processing device 5 is less likely to be overloaded.

In addition, in the above embodiment, an example was described in which the file update device is installed in one file, but it is also possible to install the file update device in another device existing on the network and operate it based on another program. Alternatively, it may be provided within the workstation.

Further, in this embodiment, a case has been described in which the operation is performed at regular time intervals, but the file may be updated each time the file is used.

(Effects of the Invention) As explained above, the file server according to the present invention is configured to automatically update the content of its own file even if the content of a file in another region is updated without notification. This allows the file contents to always be kept up to date. Therefore, mistakes such as creating a program using files whose contents have not been updated can be prevented, and software development can be carried out more efficiently.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a file system equipped with a file server according to the present invention, and FIG. 2 is a flowchart showing processing operations of a file update device. 1...Local area network (LAN), 2.
...File server, 3...Workstation, 4
... File storage equipment, 5... Processing device, 6...
File update device. Figure 1

Claims (1)

[Claims] In a file server that is connected to a data transmission network and stores and manages files, directories stored in file systems in other regions are listed, and the content of the listed directory and the information corresponding to this directory are displayed. Compare the contents of your own directory, and if the directory in another region has been updated, transfer the corresponding file from the other region's file system, and change the contents of your own file based on the transferred file. A file server characterized in that it is provided with a file update device for updating.