JPH09198283A - File deletion method on recording medium volume - Google Patents

Abstract

(57) [Abstract] [PROBLEM] To delete a file on a recording medium volume by automatically searching the backup registration list for a file that has already been backed up without the user having to confirm the backup registration list. Delete only files that were backed up after the file creation date. SOLUTION: In a system for deleting a file on a recording medium volume, means for automatically checking whether or not a file to be deleted has already been backed up, and deleting the file.
A method for automatically checking whether the recording medium volume containing the files to be deleted has already been backed up, and automatically deleting the files to be deleted or the backup date of the recording medium volume containing the files to be deleted A configuration comprising a means for deleting a file after confirming whether it is after the creation date, and a method for deleting a file by using a backup registry which records backup management information of a file and a volume.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file deletion method on a recording medium volume, and automatically backs up files that have already been backed up after the file creation date without the user having to check the backup registration list. Regarding how to delete files.

[0002]

2. Description of the Related Art When a file or volume is backed up, its backup information is managed in a backup register, and when deleting a file that has already been backed up, refer to this backup register.
It is deleted after confirming that it has been backed up.

[0003]

In the file deletion method on the recording medium volume described above, the backup of the file to be deleted is confirmed by referring to the backup register every time the user deletes the file.

Therefore, if the number of files held by the user increases, the backup registration list must be referenced for all files to be deleted, and the time required for file deletion also increases.

An object of the present invention is to automatically search the backup registry and delete only files that have been backed up when deleting files on a recording medium volume. In addition, you can search the backup directory for files to be deleted not only by file name but also by volume name. It automatically determines whether the volume containing the file to be deleted has been backed up, and only the files that have been backed up are deleted. It is also possible to delete. Further, the backup registration list is automatically searched for the backup date of the file or volume, and only the file whose backup date is after the file creation date is deleted.

[0006]

In the method of deleting a file on a recording medium volume according to the present invention, a file to be deleted is already backed up automatically by using a backup registry for recording files and backup management information of the volume. The method of deleting after confirming whether it has been completed, the method of deleting after confirming whether the recording medium volume in which the file to be deleted exists has already been backed up, the file to be deleted automatically, or the file to be deleted A method having a means for deleting after confirming whether the backup date of a volume in which a file exists is later than the creation date of the file is realized.

In the method of deleting a file on the recording medium volume of the present invention, the file to be deleted is automatically searched in the backup register when the file is deleted, and it is verified whether the file has been backed up. In addition, the backup directory search is performed by using not only the file name but also the volume name, and it is also verified whether the recording medium volume in which the file to be deleted exists has been backed up. Further, when the backup registration list is searched, the backup date of the file or volume is also searched to verify whether the backup date is after the file creation date.

In this way, only the files backed up after the file creation date are deleted from the searched deletion target files.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A method of deleting a file on a recording medium volume according to the present invention will be described below with reference to the drawings.

FIG. 1 is an example in which a magnetic disk volume is used as a recording medium volume in a file deletion method on a recording medium volume according to the present invention, and a file on the magnetic disk volume is to be deleted. Is. In the figure, 1 is a magnetic disk volume in which a file to be deleted exists, 2 is a central processing unit (CPU) of an electronic computer system, 3 is a file, and a backup register for registering management information when the volume is backed up. .

FIG. 2 is a diagram showing an example of a backup registry used in the method for deleting a file on a recording medium volume according to the present invention. In the figure, reference numeral 21 is a management information table diagram of a backup registration list, and backup management information is recorded when a file and a volume are backed up. The backup registry has a file backup record (file name, backup date) and a volume backup record (volume name, backup date).

FIG. 3 is a flow chart showing details of an embodiment of a method for deleting a file on a recording medium volume according to the present invention. In the figure, step 31 determines whether or not to confirm the backup of the file to be deleted. Step 32
Searches the backup registry for whether the file to be deleted has been backed up. In step 33, it is determined whether the file to be deleted has been backed up. Step 3
4 determines whether the backup date of the file to be deleted is after the file creation date. By steps 33 and 34, it is determined whether or not the file to be deleted is deleted. Step 35 determines whether or not to confirm the backup of the volume in which the file to be deleted exists. Step 36
Searches the backup registry for whether the volume containing the file to be deleted has been backed up. In step 37, it is determined whether the volume in which the file to be deleted exists has been backed up. In step 38, it is judged whether the backup date of the volume in which the file to be deleted exists is after the file creation date. Step 3
7, 38 determines whether or not to delete the file to be deleted. In step 39, the file to be deleted is deleted.

As described above, it is possible to automatically delete only the files backed up on or after the file creation date without the user confirming whether or not the files on the recording medium volume have been backed up in the backup registration list.

[0014]

According to the present invention, when a file on a recording medium volume is deleted, the backup registration list is automatically searched, and the file to be deleted has already been backed up on a file or volume basis. If the date is after the file creation date, the file to be deleted is deleted. When the above conditions are not satisfied, the file to be deleted is not deleted, which also has the effect of preventing unauthorized file deletion.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of an embodiment in which a magnetic disk volume is used as a recording medium volume in a file deletion method on a recording medium volume of the present invention.

FIG. 2 is a diagram showing a functional configuration of an embodiment of a backup registry for recording backup management information in the file deletion method on a recording medium volume of the present invention.

FIG. 3 is a flowchart showing details of an embodiment of a file deletion method on a recording medium volume of the present invention.

[Explanation of symbols]

1 ... Magnetic disk unit, 2 ... Central processing unit, 3 ... Backup directory.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiaki Shinmura 5030 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi Ltd. Software Development Division

Claims (3)

[Claims] 1. A system for deleting a file on a recording medium volume, which automatically deletes a file to be deleted after confirming whether or not the file to be deleted has already been backed up.
Use the method that automatically checks whether the backup date of the file to be deleted is after the creation date of the file to be deleted and the file to be deleted by using the backup directory that records the backup management information of the file and volume. How to remove. 2. In a system for deleting a file on a recording medium volume, a means for automatically checking whether the recording medium volume in which the file to be deleted exists has already been backed up, and deleting it automatically. Use the method of deleting after checking whether the backup date of the recording medium volume where the file exists is later than the creation date of the file to be deleted, and the backup directory that records the backup management information of the file and the volume. How to remove. 3. In a system for deleting a file on a recording medium volume, a file deleting means having both claim 1 and claim 2 is used, and a backup registry for recording backup management information of the file and the volume is used. How to delete files.