JPH03265921A - Control system for magnetic disk file saving magnetic disk - Google Patents

Abstract

PURPOSE:To quickly restore a file with no error by registering the identification number of a magnetic tape saved into the directory of the file to be saved every time a magnetic disk file is saved to the magnetic tape for the back-up purpose. CONSTITUTION:A saving processor 106 receives the name of a file 109 which is saved from a saving processing instruction FDD 105 and the identification No of a saving magnetic tape 110 and saves a subject file to the tape 110 from a magnetic disk 107, then calls a magnetic tape identification number register means 101. At the same time, the processor 106 delivers a file directory 108, an address included in the disk 107, and the magnetic tape identification number. Then the means 101 sets the magnetic tape identification number received from the processor 106 to the latest saving magnetic tape identification number store place in the directory 108. Thus a file is quickly restored with no error.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for restoring magnetic disk files.
This invention relates to a management method for a magnetic tape for saving magnetic disk files, with the aim of quickly and error-free finding a magnetic tape on which the latest contents of a file to be restored are saved.

[Conventional technology]

Conventionally, magnetic tape management when saving magnetic disk files has been left to the file manager.

[Problem to be solved by the invention]

In the conventional magnetic tape management method described above, it was up to the file administrator to associate magnetic disk files with the magnetic tapes on which the latest contents were saved, but as information processing equipment becomes larger in scale, the number of magnetic tapes also increases. The problem is that it takes time to search for the saved tape with the latest contents of the file to be restored, and errors may occur that the latest content is not the latest.

[Means to solve the problem]

The magnetic tape management method for saving magnetic disk files of the present invention saves and stores backups of magnetic disk files on magnetic tape, and uses the magnetic tape to repair files on the magnetic disk when they are destroyed. , and in an information processing apparatus that performs a restoration process that includes returning the contents of the magnetic disk file to the time of evacuation, in the evacuation process that stores the contents of the magnetic disk file on the magnetic tape, the identification of the magnetic tape is performed. magnetic tape identification number registration means for writing a number into a file directory corresponding to the file to be saved on the magnetic disk; and for inquiring which magnetic tape contains the latest content of the target file to be restored. a file name input means; a file directory search means for searching the magnetic disk for the file directory corresponding to the file name input using the file name input means; and a file directory search means for searching the file directory corresponding to the file name input using the file name input means; and magnetic tape identification number output means for displaying the identification number of the magnetic tape that holds the latest contents of the target file.

〔Example〕

Next, the present invention will be explained using the drawings.

FIG. 1 is an overall configuration diagram of the present invention.

In FIG. 1, 101 is a magnetic tape identification number registration means, 102 is a file name input means, 103 is a file directory search means, 104 is a magnetic tape identification number output means, 105 is an FDD for evacuation processing instruction, 106 is an evacuation processing, 107 is a magnetic disk, 108 is a file directory, 109 is a file main body, 110 is a magnetic tape for saving, and 111 is an operation console.

First, the operation of the magnetic tape identification number registration means 101 in the saving process 106 will be explained. FDD for evacuation processing instructions
The saving process 106 receives the file name of the file 109 to be saved and the identification number of the saving magnetic tape 110 from the magnetic disk 105, and after saving the target file from the magnetic disk 107 to the saving magnetic tape 110, The identification number registration means 101 is called. At this time, save processing 1
06 passes the file directory 108, its address in the magnetic disk, and magnetic tape identification number.

In the called magnetic tape identification number registration means 101,
As shown in FIG. 2, the evacuation process 10
From step 6, the receiver sets the received magnetic tape identification number in step 201>, and from the save process 106, the receiver sets the file directory 108 to the magnetic disk 10 according to the address in the magnetic disk 107 of the file directory 108 received.
Step 202), the registration of the magnetic tape identification number is completed.

Next, a procedure for obtaining a magnetic tape identification number when restoring the file 109 on the magnetic disk 107 will be described.

When a file name input command for a file to be restored is input from the console 111, the file name input means 102 is activated.

The processing of the file name input means 102 will be explained with reference to FIG.

The activated file name input means 102 issues a file name input prompt request for the target file to the console 111 (step 301), and enters a waiting state until the file name is input (step 3.2). If the input of the file name is recognized, the file directory search means 103 is started after confirming the validity of the contents such as the type of characters, 9 characters, and the number of characters of this file name (step 303), and the processing of the file name input means 102 is completed. .

Next, in FIG. 4, the file directory search means 103
The process will be explained.

The started file directory search means 103 reads the first file directory 108 of the magnetic disk 107 (step 401), and the file name input means 102
It is checked whether the received file name is the one taken (step 402), and if it does not match, it is checked whether the next file directory 108 exists (step 403),
If so, the file directory 108 is read (step 404), and then the process returns to step 402.

As a result of step 403, the next file directory 10
8 does not exist, the magnetic tape identification number output means 104 is activated with this notification (step 405).
The processing of the file directory search means 103 is completed. As a result of step 402, if a matching file directory 108 is found, step 406) extracts the identification number of the magnetic tape 110 that holds the latest content from within the file directory 108, thereby outputting the magnetic tape identification number output means 104. Start up Step 4
07), the processing of the file directory search means 103 is completed.

The processing of the magnetic tape identification number output means 104 will be explained with reference to FIG.

The activated magnetic tape identification number output means 104 receives the information from the file directory search means 103;
It is determined whether it is a magnetic tape identification number or a notification that the specified file directory 108 does not exist (step 501). If it is a magnetic tape identification number, this number is set in the display area (step 502), and displayed. At step 504), the magnetic tape identification number output means 104 completes the process of outputting the contents of the area to the console. Step 5
As a result of 01, file directory 10 of the specified file
If it is a notification that 8 does not exist, a message to that effect is set in the display area (step 503), the contents of the display area are output to the console (step 504), and the magnetic tape identification number output means 104 is completed. .

〔Effect of the invention〕

As explained above, each time a magnetic disk file is saved to a magnetic tape for backup, the identification number of the saved magnetic tape is registered in the file directory of the file to be saved. When restoring a file, it becomes possible to easily obtain the identification number of the magnetic tape that holds the latest contents of the file, and this has the effect that the file can be quickly restored without errors.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of the present invention, FIG. 2 is a diagram showing the processing operation of the magnetic tape identification number registration means, FIG. 3 is a diagram showing the processing operation of the file name input means, and FIG. 4 is a file directory search diagram. FIG. 5 is a diagram showing the processing operation of the magnetic tape identification number output means. 101...Magnetic tape identification number registration means, 102...
・File name input means, 103...File directory search means, 104...Magnetic tape identification number output means, 105...FDD for saving processing instructions, 106...
Saving process, 107... Magnetic disk, 108... File directory, 109... File body, 11
0...Magnetic tape for evacuation, 111...Operation console.

Claims (1)

[Claims] Backing up and storing backups of magnetic disk files on magnetic tape, using the magnetic tape to repair files on the magnetic disk when they are destroyed, and returning the contents of the magnetic disk files to the point of backup. In an information processing apparatus that is performing a restoration process that includes, in a save process that saves the contents of the magnetic disk file on the magnetic tape, the identification number of the magnetic tape is stored in a file directory corresponding to the file to be saved on the magnetic disk. A magnetic tape identification number registration means for writing, a file name input means for inquiring which magnetic tape contains the latest contents of the target file to be restored, and an input using the file name input means. a file directory search means for searching the file directory corresponding to the file name on the magnetic disk; and displaying an identification number of a magnetic tape holding the latest contents of the target file searched by the file directory search means. 1. A management method for a magnetic tape for saving magnetic disk files, characterized by comprising a magnetic tape identification number output means.