JPS6126086B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for modifying a control data set,
In particular, the present invention relates to a system that automatically corrects an abnormality when there is an abnormality in a control data set that manages cartridges existing in a cell in a system such as the MSS system that processes data using cartridges.

[Conventional technology and problems]

In the MSS system, cartridges are stored in honeycomb-shaped hexagonal cells in the magazine, and when data is processed, data is read or written after the required cartridge is taken out from the cell. Therefore, as shown in Fig. 1, a control data set is created in which a cell address is assigned to a cell, a volume serial number is assigned to a cartridge, and a cartridge setting table is formed from the cartridges stored in the cell address. )
Online processing using this MSS is performed using system control information called CLS that controls this entire system.

When processing online information in this system, for example, as shown in FIG. 2, at certain times t ₀ and t ₃
A data backup is being performed to save the data that has been processed up to that point.

In this case, when data is backed up at time t ₀ in FIG. 2, each cell at cell address 1, 2, 3, 4, etc.
), cells 1 and 3 were empty, and cells 2 and 4 stored cartridges with volume serial numbers B and D (hereinafter referred to as cartridges B and D), but at time t ₁ , something happened. Due to the reason,
When cartridge B is ejected from cell 2 and cartridge C is inserted, the cartridge setting table is not rewritten and remains at time _t0 . Data processing is performed in this state, and when cartridge B is taken out from cell 2 at time _t2 , it is detected that it is cartridge C, and an error message is displayed. Although the data processing itself can be continued even if an error is displayed, the cartridge setting table of the control data set is not repaired, so the processing continues while the abnormality of the control data set is detected. Therefore, when an abnormality in the control data set is detected, the system is brought down and the program is stopped in order to repair the control data set.After identifying the abnormality, the system administrator manually performs a batch job. I had to modify the table as shown in the dotted line in Figure 3C. Therefore, there was a problem in that it placed a considerable burden on the system operation.

[Purpose of the invention]

In order to improve this problem, the present invention automatically creates a control data set when an error is displayed indicating that a cartridge abnormality in a cell (different cartridges in a cell, presence or absence of a cartridge, etc.) is detected. It is an object of the present invention to provide a method for modifying a control data set.

[Structure of the invention]

In order to achieve this purpose, the control data set modification method of the present invention includes a cartridge from which data is read/written, a plurality of cells for storing the cartridge, and a management table for managing the cartridge status in the cell. The processing device is provided with table reading means for reading out a cartridge setting table, data entry means for writing data into the table, identification symbol holding means for holding an abnormal cartridge identification symbol, and comparison means for comparing the identification symbols, The present invention is characterized in that the cell address where the abnormal cartridge identification symbol exists is controlled to be detected from the cartridge management table, and the cartridge management table is corrected in accordance with the detection result.

[Embodiments of the invention]

An embodiment of the present invention will be described based on FIG. 4 and with reference to other figures.

FIG. 4 shows a control data set modification method for performing the online recovery function of the present invention, in which 1 is a cartridge setting table, 2 is a table reading section,
3 is a table entry section, 4 is a control section, 5 is an error information register, 6 is a cartridge reading section, 7 is a cartridge serial number register, 8 is a comparison section, 9 is a match register, 10 is a cartridge register, 11 is a
It's MSS Magazine.

The error information register 5 is used to set error information, and the cell address where the error occurred is written therein.

When error information is transmitted, the cartridge reading section 6 reads out the cartridge serial number in the cell address specified by the error information and sets it in the cartridge serial number register 7.

The comparison unit 8 compares the cartridge serial number held in the cartridge serial number register 7 with the cartridge serial number read from the cartridge setting table, and if they match other than the error occurrence cell address, sets the cell address.

The operation of the embodiment of the present invention shown in FIG. 4 will now be described.

(1) When the cell contains another cartridge In normal data processing, the user selects cartridge A from the MSS magazine at time _t2 .
When the CLS control task reads that cartridge A is stored in cell 2 from the cartridge setting table to access The control unit 4 shown in FIG.
to communicate. Thereby, the control section 4 causes the table reading section 2 to read the cell address where this error has occurred.

By reading this cell address, it is recognized that the cartridge A was properly stored before the error was detected, and this is set in the cartridge register 10.

Then, the control section 4 controls the cartridge reading section 6.
Actual cell 2 from MSS Magazine 11
The cartridge stored in the cartridge is read out, the cartridge is read as cartridge B, and the read cartridge B is set in the cartridge serial number register 7.

Next, the control unit 4 sequentially reads out the cartridge numbers from the cartridge setting table 1 using the table reading unit 2, and determines whether the cartridge A held in the cartridge register 10 is stored in a location other than the cell 2 at the error occurrence cell address. detect whether there is a This detection is performed by the comparator 8, and if a matching cell address is detected, this is set in the match register 9, and this match detection is reported to the controller 4. As a result, the control unit 4 causes the cartridge reading unit 6 to read the cartridge serial number of this cell address, and it
Make sure that

If the presence of cartridge A is not detected by reading this cartridge setting table 1 and the above confirmation, cartridge A
is treated as being discharged from the cell. Then, the control section 4 controls the table entry section 3 to enter the cartridge B in the cell 2, and thus the cartridge setting table is corrected. In this way, the control data set can be modified on-line.

(2) When there are cells in an empty cartridge.

If it is detected that the cartridge C has been inserted into the cell 3 as shown by the dotted line in FIG. The cartridge is read and confirmed to be cartridge C. This is then set in the cartridge serial number register 7.

Next, the control section 4 causes the table reading section 2 to sequentially read out the cartridge setting table 1 to detect the cell address in which the cartridge C is written. If no cell address is detected, cartridge C will be written in cell 3. If detected, the cartridge stored in the detected cell is checked and the cartridge setting table 1 is corrected accordingly.

(3) When there are no cells in the cartridge.

Similarly to the above, it is confirmed by operating the cartridge reading section 6 that no cartridge exists at the cell address where the error was reported.

Next, the table reading unit 2 reads out the cartridge number stored in the cell address where the error occurred, and assigns this to the cartridge number.
After setting the cartridge in the register 10, the cartridge setting table 1 is sequentially read to detect whether the cartridge is stored elsewhere, and if it is written that the cartridge is stored elsewhere, the cartridge reading section 6 confirms this. , based on this, the cartridge setting table 1 is modified.

In this manner, when error information is reported, the cartridge configuration table can be modified while remaining online, thereby providing cartridge information and allowing data processing to be performed without interruption.

In the embodiments described above, it is of course possible to use existing cartridge reading sections, table reading sections, and table entry sections. If error information is transmitted not only cell information but also cartridge information at the same time, the error can be corrected more quickly.

〔Effect of the invention〕

According to the present invention, cartridge information can be restored online, so there is no need to interrupt the system and perform manual restoration as in the past. Therefore, data processing can be performed very efficiently.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the control data set, Fig. 2 is an explanatory diagram of conventional problems, Fig. 3 is an explanatory diagram of the cartridge status in the cell and the cartridge setting table when an error occurs, and Fig. 4 is an explanatory diagram of the cartridge setting table. FIG. 1 is a configuration diagram of an embodiment of the present invention. In the figure, 1 is a cartridge setting table, 2 is a table reading section, 3 is a table entry section, 4 is a control section, 5 is an error information register, 6 is a cartridge reading section, 7 is a cartridge serial number register, 8 is a comparison section, 9 is the match register and 10 is the cartridge register.
Register 11 is the MSS magazine.

Claims (1)

[Claims] 1. In a data processing device having a cartridge from which data is read and written, a plurality of cells for storing the cartridge, and a management table for managing the cartridge status in the cell, a table reading means for reading a cartridge setting table; A data entry means for writing data into the cartridge, an identification symbol holding means for holding an abnormal cartridge identification symbol, and a comparison means for comparing the identification symbols are provided, and the cell address where the abnormal cartridge identification symbol exists is detected from the cartridge management table. A method for modifying a control data set, characterized in that a cartridge management table is modified according to the detection result of the control.