JPH0520157A - Automatic restoration system for document file - Google Patents

Abstract

PURPOSE:To automatically restore a broken document file in a short time, and to eliminate the work for saving the document file every day. CONSTITUTION:An input means 1 inputs information required for restoring a broken document file. A history information editing means 2 edits information in a history information file 7a, when a document file 8 is broken, and rewrites the history information file in accordance with its result. A history acquiring means 3 acquires information related to the document file which becomes an object of restoration from a history information file 7b which is rewritten. A job monitoring means 5 monitors a job for accessing the document file 8 which is an object of restoration, among the jobs which are operating in a computer. A restoration means 4 executes restoration of the document file 8, based on the information obtained from the edited history information file 7b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic document file recovery system, and more particularly to a document file automatic recovery system for automatically recovering a damaged document file when the document file in the computer system is damaged.

[0002]

2. Description of the Related Art In the conventional document file automatic restoration method, one document is composed of discontinuous blocks in order to effectively use the area on the disk when managing the medium on the disk in the computer system. And if the information that correlates the discontinuous blocks that the blocks have is destroyed by a hardware failure,
The document can no longer be accessed. Therefore, assuming that the document file is broken, the document file is saved every day, and when the document file is broken, the saved file is restored and used.

[0003]

In the above-mentioned conventional document file management method, it is necessary to save the document file every day, assuming that the document file is damaged, but this work must be done every day. It has a drawback that it takes time, and if a document file is damaged, it takes time to recover it.

Further, another job has to be stopped for a long time during the saving or the restoration, so that there is a drawback that it takes time to restart the job.

It is an object of the present invention to provide a document file automatic restoration method which does not require saving the document file every day and does not take much time for restoration.

[0006]

The document file automatic restoration method according to the present invention comprises: (A) an input means for inputting information necessary for restoring a broken document file;
(B) history information editing means for editing information in the history information file when the document file is broken, and rewriting the history information file based on the result, (C) as a recovery target from the rewritten history information file (D) Job monitoring means for monitoring a job that accesses the document file to be restored among the jobs operating in the computer, (E) Edited The recovery means is configured to recover the document file based on the information acquired from the history information file.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a document file automatic restoration system of the present invention.

In the document file automatic restoration system of the present embodiment shown in FIG. 1, when the document file 8 and the input means 1 for inputting the information necessary for restoring the broken document file are broken, the history information file 7a is stored. History information editing means 2 that edits the information of the above, and rewrites the history information file with the result, history acquisition means 3 that acquires information about the document file to be restored from the rewritten history information file 7b, and operates in the computer. Among the existing jobs, a job monitoring means 5 for monitoring a job that accesses the document file 8 to be recovered, and a recovery means for recovering the document file 8 based on the information acquired from the edited history information file 7b. It is composed of 4.

Next, the operation will be described.

FIG. 2 is a diagram showing the structure of the data portion of the document file 8 shown in FIG. Further, FIG. 3 is a diagram showing a record format of the history information files 7a and 7b of FIG.

The document file data section 10 of FIG.
As shown in FIG. 1, one document is composed of physically discontinuous blocks 11 to 14, and therefore, as a header for associating the discontinuous blocks, a pointer 15a to the block to be connected next is displayed. 15d and pointers 16a to 16d indicating the block connected before 15d
Each block has and.

For example, the pointer 15b indicating the block connected next to the block 12 stores the start address "0100" of the next block 13 and indicates the block connected before the block 12. 16
In b, the start address “001
“0” is stored. Then, each pointer necessary for the recovery is recorded as a history in the history information file 7a of FIG. The record format of the history information file 7a is the document file name 22, the document name 23 of FIG. 3, the command 24 indicating registration / update / deletion, and the chain address part of the block necessary for associating physically discontinuous blocks. It is composed of 26 data.

Further, the history information file 7a stores history information of all document files.

If the document file "DOC1" 28 shown in FIG. 4 is broken during the execution of a certain job and the processing cannot be continued, the input means 6 causes the input device 6 to operate.
Get the information needed for recovery from. The history information file 7a is edited on the basis of the information necessary for recovery obtained by the input means 1. As the editing method, information of only the recovery target file is extracted from the history information file into a table, and the processing is performed by the history information editing means 2 as shown in FIG. 6 in order from the last record.

Taking FIG. 4 as an example, the last record 3
When No. 4 is extracted into the table (step 41), it is judged whether or not it is a delete command (step 42). Since it is an update command, it is further judged whether or not it is an update command (step 44). The update command of the record 34 is rewritten to the registration command, and the record 30 before that is updated.
Are deleted (step 45). Next, it is judged whether or not the table is completed (step 46). If not completed, the process returns to step 42. If completed, the table is copied to the history information file (step 47). , Ends the operation.

If the command is a delete command in step 42 above, all records relating to the document are deleted, and the flow advances to step 46. The history information file is rewritten by copying it to the history information file based on the above table, and the edited history information file 7b is completed as shown in FIG. Then, the restoration is performed based on the history information acquired by the history acquisition unit 3 from the history information file 7b.

Next, the processing by the recovery means 4 as shown in FIG. 7 is performed.

First, the history information obtained by the history acquisition means 3 is positioned at the corresponding record (step 51).
Then, the header of the data part of the document file "DOC1" 28 is read (step 52),
Then, the pointer indicating the block to be connected next is compared with the corresponding portion of the history information (step 53), and if different, the header is rewritten with the value of the history information (step 54). Similarly,
Then, the pointer indicating the block to be connected next is compared with the corresponding portion of the history information (step 55), and if different, the header is rewritten with the value of the history information (step 56). Next, it is determined whether the document is finished (step 5
7) If not completed, the process returns to step 52. If completed, it is determined whether or not the document file is completed (step 58). If the document file is not completed, the process returns to step 51, If the document file is complete, the operation ends.

Further, the job monitoring means 5 for monitoring so that another job in the computer does not access the document file 8 during the processing by the recovery means shown in FIG. 7 will be described with reference to FIG. ..

First, it is determined whether there is a job that accesses the document file 8 (step 61), and if there is a job that accesses the document file, it is determined whether the document file is currently being restored (step 61). 62). If the document file is currently being recovered, "Currently XXX file is being recovered"
Is displayed on the output device 9 (step 63). Then, it is again determined whether or not the recovery work is completed (step 64), and when the recovery work is completed, the operation is terminated and the job enters the execution state.
If not completed, the process returns to step 63.

As described above, when the history information is accumulated in the history information file and the document file is broken, the history information is taken out and edited, and the broken document file is automatically restored based on the edited history information. By providing the means, the broken document file can be automatically restored in a short time, and the work of saving the document file 8 every day can be eliminated.

[0023]

As described above, according to the document file automatic restoration method of the present invention, when history information is stored in the history information file and the document file is damaged, the history information is taken out and edited, and the edited history is edited. By providing a means to automatically restore a broken document file based on information, it is possible to automatically restore a broken document file in a short time, eliminating the need to save the document file every day. have.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a document file automatic restoration system of the present invention.

FIG. 2 is a diagram showing a structure of a data part of the document file shown in FIG.

FIG. 3 is a diagram showing a record format of a history information file of FIG.

FIG. 4 is a diagram showing an example of a history information file of FIG.

5 is a diagram showing a state in the history information file after the history information file of FIG. 4 is edited.

6 is a flowchart showing the operation of history information editing means in FIG. 1. FIG.

FIG. 7 is a flowchart showing the operation of the recovery means shown in FIG.

FIG. 8 is a flowchart showing the operation of the job monitoring means of FIG.

[Explanation of symbols]

 1 Input Means 2 History Information Editing Means 3 History Acquiring Means 4 Restoring Means 5 Job Monitoring Means 6 Input Devices 7 History Information Files 8 Document Files 9 Output Devices

Claims (1)

Claims: (A) Input means for inputting information required to recover a damaged document file, (B) When the document file is damaged, the information in the history information file is displayed. History information editing means for editing and rewriting the history information file with the result, (C) history acquisition means for obtaining information on the document file to be restored from the rewritten history information file, (D) in the computer Job monitoring means for monitoring a job that accesses a document file to be recovered among the operating jobs, (E) Recovery for recovering the document file based on the information acquired from the edited history information file An automatic document file recovery method characterized by having means.