JPS6074054A - Conversion processing system for data set - Google Patents

Abstract

PURPOSE:To convert automatically a data set under the control of an optional OS into a data set under another OS by providing a data set converter which performs the conversion of data sets among plural OSs and a mass-storage memory device. CONSTITUTION:The data set converter 13 converts a data set under an optional OS among OSs I -III requested to operate under one specified standard OS (OSX) and perform conversion processing into the data set format of the OSX, and the converted data set is stored in the mass-storage memory device. Then, the data set converter 13 fetches a target data set from the mass-storage device 14 and converts it into the data set format of a new specified OS to output the resulted data.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a data processing system in which different O
This article relates to a data set conversion processing method when migrating to 8.8.

[Technology background]

In general, data processing systems are often upgraded to higher-end models as the amount of processing increases or the content of processing increases, and various system enhancements are made. In that case, if the conventional O8 is changed to another incompatible O8, the zolograms and data sets used at that size cannot be used as they are, and certain conversion processing is required. Especially when the amount of data sets that have been accumulated up to that point is enormous, the conversion process is extremely laborious.

By the way, can you access the data set directly from a magnetic disk? The one on the tape and the magnetic tape? Everything on the volume, especially the direct access volume, has a strong O8 dependency.

Figure 1 shows direct access 7]? This figure shows the outline of Ryuum's development. Cylinder 01 Track 0 has
IPL record 1. IPL record 2 and a volume label are placed. The IPL record 1.2 stores a program for IPLing the control program to the main memory, and the volume label contains the volume serial number, owner name, VTOC address, etc. Contains information for managing the entire volume.

V T OC (Volume Table Of Co
nttno) is a control table used for area management.
A plurality of data set control blocks called DSCBs are accommodated. DSCB types range from DSCB O to DSCB 6. For example, DSCB I stores data set identification names, attributes, pointers to link to related areas, etc., and DSCB 5 stores information about unused space within the volume. Stored.

The structure of the various control tables in a volume with such direct access is affected by differences in data set access methods such as partitioned organization, index sequential organization, direct organization, and O8 handling of data protection, space allocation, etc. This is one cause of incompatibility of direct access volumes or datasets.

FIG. 2 shows a conventional data set conversion processing method performed during migration to the new O8. In the figure, l to 3 are different O81. m, m, 4 and 5 are O8
Data Sera under I) A, B.

6 and 7 are the corresponding dataset A' under O8m.

B′, 8 and 9 further show the corresponding data sets x, ff under O8m. Also, lO to 12 are magnetic chify
T? It represents rum.

For example, from O8I to 08II or O
When transitioning to Sn or from OSn to O8l[I,
Once the data set under the old O8 is stored on magnetic tape volumes 10 and 11 using a utility program,
, 12, and then directly from the magnetic tape volume to the access volume under the new O8. For this reason, there are disadvantages in that the burden of manual processing such as machining of magnetic tapes is large, the time required for conversion processing is long, and errors are likely to occur.

[Object of the invention and ft construction]

An object of the present invention is to provide a means for facilitating data set conversion processing at the time of O8 switching, and to realize a substantially automatic conversion processing means. The configuration of the present invention for that purpose includes a data set conversion device for converting data sets between a plurality of O8s and a mass storage device, and the data set conversion device converts data sets that cannot be directly accessed under the old O8. , convert it into a data set of a direct access volume under one O8 predetermined as a standard and store it in the mass storage device, and then retrieve the data set stored in the mass storage device and convert it to the data set under the new O8. It is characterized by converting and storing datasets in direct access volumes.

[Embodiments of the invention]

The details of the present invention will be explained below based on examples.

FIG. 3 is a schematic diagram of a system according to an embodiment of the present invention.

In the figure, elements referenced 1 to 9 are the same as shown in FIG. 13 is a data set conversion device based on the present invention, and 14 is a mass storage device such as MSS.

The data set conversion device 13 is configured to convert any data set under O8 (among O8I, OSn, and osm) to which it is requested to perform operation and conversion processing based on one predetermined standard (represented by one oscosx). are all converted into O8X data set format and stored in the mass storage device 14. Note that O8X may be any one of osr, osn, and osnt.

The mass storage device 14 is composed of a direct access storage device, but it has a large enough 'llfm for the size of the data set requested to be processed.In reality, a magnetic tape device is used as a virtual direct access storage device. It is also possible to realize this.

Next, the data set conversion device 13 converts the data into the mass storage device 14.
The target data set is completely lost, and the specified new O8
In this way, the data set converting device 13 converts any O8 data set via the standard O8X.

FIG. 4 is a block diagram showing the configuration of one embodiment of the data set conversion device in FIG. 3. In the figure, 13 is a dataset conversion device, 14 is a mass storage device, 15 is a conversion processing unit, 16 is a conversion table, 17 is an 081 data input/output control unit, 18 is an O8 data input/output control unit, 19 is O
8■ Data input/output control unit, 20 represents an O8X data input/output control unit.

Each data input/output control section 17 to 20 performs data input/output control between the plJ neem and the conversion processing section 15 of the corresponding direct access storage device.

When the two types of O8 (new and old) to be migrated are specified, the conversion processing unit 15 extracts the corresponding conversion table from the conversion table 16 and performs the format conversion necessary for data set input/output based on the conversion table 16. For example, in the case of 6S■→O8■ transition, the conversion of O8I→O8X and the conversion of O8X→O8■ are executed when inputting and outputting data sets, respectively. [Effects of the Invention] As described above. In addition, according to the present invention, any dataset under O8 can be automatically converted to any other dataset under O8, which can greatly improve the efficiency of the conversion process.

[Brief explanation of the drawing]

Is Figure 1 direct access? 2 is an explanatory diagram of a conventional data set conversion processing method, FIG. 3 is a schematic diagram of an embodiment of the system of the present invention, and FIG. 4 is an explanatory diagram of an embodiment of the data set conversion device. FIG. In the figure, l is below O8, 2 is os n, 3 is os n+, 4
9 to 9 are data sets A, B, A', B', and A, respectively.
″. B', 13 indicates the data set conversion device, and 14 indicates the Inuyo@storage device. Patent applicant Fujitsu Limited representative patent attorney Fumihiro Hase (one other person)

Claims (1)

[Claims] The data set conversion device is equipped with a data set conversion device that converts data sets between multiple O8s, and a mass storage device. Convert to a data set of direct access volume under O8 and store it in the above mass storage device, then extract the data set stored in the mass storage device and convert it to a data set of direct access volume under new O8. A data set conversion processing method characterized by storing data as a data set.