JP6911732B2 - Information processing equipment, information processing methods, and programs - Google Patents

Description

The present invention relates to an information processing device, an information processing method, and a program.

When the mainframe creates a sequential file in the direct access storage device, for example, the information of the sequential file is managed by VTOC (Volume Table Of Contents) in the direct access storage device. A sequential file is a type of file in which data is continuously recorded in order from the beginning of the file, and the order and position from the beginning of the file are accessed as clues. In the track number storage area in the VTOC, the position (track number) of the last data among the data recorded in the sequential file, that is, the track number where the last recorded data in the sequential file is located is described. NS. When the mainframe manages the size of the track number storage area in 2 bytes, the maximum number of tracks allocated to the file is 65535 tracks, which is the upper limit of 2 bytes. In this case, the block length per block is 23 KB, and if two blocks can be created in one track, 23 KB × 2 × 65535 tracks = 3 GB is the maximum value of the file capacity.

A technique for reducing the load on a server computer and a network to perform high-speed I / O processing on a large-capacity file is known (see, for example, Patent Document 1). A technique is known that enables the free area generated in one file system to be effectively used by another file system without partitioning the area on the recording medium shared by a plurality of file systems for each file system. (See, for example, Patent Document 2). There is known a technique for backing up / restoring data stored in an open system volume that exceeds the capacity that can be recognized by the mainframe using backup software on the mainframe (see, for example, Patent Document 3).

JP-A-2007-293634 Japanese Unexamined Patent Publication No. 2006-201953 JP-A-2002-55862

As mentioned above, the maximum file size is limited by the size of the track number storage area. When the amount of data is larger than the maximum value of 3 GB of the file capacity of the current sequential file, it is difficult for the mainframe to handle the data larger than 3 GB as one file in the direct access storage device.

An object of the present invention is to store a file and read the stored file without being limited by the size of the track number storage area.

The information processing apparatus according to the embodiment has a plurality of storage units, a first processing unit, and a second processing unit.

The first processing unit sets the specified file as the parent file and 1 based on the size of the storage area for storing the information indicating the amount of data recorded in the file and the size of the specified file. It is divided into the above child files and stored in the plurality of storage units.

The first processing unit assigns file identification information to the parent file and the one or more child files based on a predetermined rule, and the files assigned to the parent file and the one or more child files, respectively. The identification information and the correspondence information indicating the correspondence between the parent file and the storage unit in which each of the one or more child files are stored are stored in any of the plurality of storage units.

When the second processing unit receives a read request for designating the parent file, the second processing unit reads the parent file from the storage unit in which the parent file is stored among the plurality of storage units.

The second processing unit determines whether the one or more child files are stored in any of the plurality of storage units based on the correspondence information and the predetermined rule, and determines whether the one or more child files are stored in any of the plurality of storage units. Is stored, the one or more child files are read from the storage unit in which the one or more child files are stored.

According to the embodiment, the file can be stored and the stored file can be read out without being limited by the size of the track number storage area.

It is a figure which shows the virtual sequential file which concerns on embodiment. It is a block diagram of the information processing apparatus which concerns on embodiment. This is an example of a catalog register. It is a figure explaining the process of the information processing apparatus which concerns on embodiment. It is a flowchart of the file creation deletion process by the utility part which concerns on embodiment. It is a flowchart of the file open processing which concerns on embodiment. It is a flowchart of the light processing which concerns on embodiment. It is a flowchart of the lead processing which concerns on embodiment. It is a flowchart of the file closing process which concerns on embodiment. It is a flowchart of the file deletion / file name change processing by the data management part which concerns on embodiment. It is a block diagram of an information processing apparatus (computer).

Hereinafter, embodiments will be described with reference to the drawings.
In order to increase the capacity of the sequential file, it is conceivable to change the structure of the track number storage area so as to expand the track number storage area from 2 bytes to 3 bytes, for example. However, since the structure of the track number storage area is open to the public and the reading method is also open to the public, if the structure of the track number storage area is changed, it is necessary to change the application program that uses the sequential file. If the structure of the track number storage area is changed in this way, it is difficult to use the existing application program as it is.

FIG. 1 is a diagram showing a virtual sequential file according to the embodiment.
There is a structural limit to the number of tracks storage area in expanding the capacity of one sequential file (hereinafter referred to as a file). In the embodiment, the number of tracks storage area is not expanded, the sequential files are combined with the parent file and the child files, and a plurality of files are virtually treated as one file, and a system different from the application program automatically handles them. Achieve a large capacity by switching the read / write file. Hereinafter, one virtual file composed of a parent file and one or more child files is referred to as a virtual sequential file.

According to the embodiment, it is not necessary to change the application program for accessing the file, and the file can be accessed without being aware of the parent file and the child file.

In the embodiment, the parent file and the child file are named according to the following naming convention. It is assumed that the file name is composed of a plurality of modifiers concatenated with a period (.). The file name is an example of file identification information.

The final modifiers of the parent file and the child file are xnnnn, where x is an alphabetic character (AZ) and nnn is a number.

The final qualifier x in the parent and child files is any alphabetic character.
The final modifier nnn of the parent file (first file) is 000.

The final modifier nnn of the child file is incremented by 1 for each file in order from 001.
For example, the file name of the parent file is A.I. B. It becomes A000, and the file name of the child file next to the parent file is A. B. It becomes A001. Hereinafter, the file names of the child files are, in order, A. B. A002, A. B. A003, ...

The number of characters of the final modifier is not limited to four characters, and may be any number. Further, the final modifier is not limited to the numbers increasing by 1 as long as the order of the parent file and the child file is known, and alphabetic characters may be assigned in alphabetical order such as A, B, C, ....

Also, the file name described in the job control statement (FD statement) or command is only the parent file.

FIG. 2 is a configuration diagram of an information processing device according to the embodiment.
The information processing device 101 includes a utility unit 111, a JCL (Job Control Language) execution unit 121, a command input unit 131, an application program unit 141, a data management unit 151, and a storage unit 161-i (i = 1 to 4). .. The information processing device 101 is, for example, a large computer such as a mainframe. FIG. 2 shows a case where the information processing device 101 stores the virtual sequential file 171.

The storage unit 161-i is a storage device that stores data, programs, and the like used in the information processing device 101. One volume is set in each of the storage units 161-1 to 161-4. VOL001, VOL002, and VOL003 are assigned as volume names to the storage units 161-1, 161-2, and 161-3, respectively.

The storage unit 161-i stores the VTOC 162-i and the file 163-i which is a sequential file. The virtual sequential file 171 is composed of the files 163-1, 163-2, and 163-3.

The VTOC162-i is a control block for managing the usage state of the area in the volume, and the information of the file in the volume is described. The VTOC162-i contains the file name of the file in the volume, the number of allocated tracks, the position of the last data (track number) among the data in the file, the virtual sequential file flag (indicated as * in FIG. 2), and the like. Has been described. In the embodiment, the position (track number) of the last data in the file, that is, the track number where the last recorded data in the file is located is described in the track number storage area in the VTOC 162-i. .. The track number described in the track number storage area indicates the size of the data recorded in the file. Further, it is assumed that the size of the track number storage area is 2 bytes. Further, one track includes two blocks, and the block length of one block is 23 KB. The size of the track number storage area, the number of blocks, and the block length are examples, and are not limited thereto.

The virtual sequential file flag indicates whether the file is a file that constitutes a virtual sequential file. When the virtual sequential file flag is enabled (ON), it indicates that the file corresponding to the virtual sequential file flag is a file constituting the virtual sequential file. When the virtual sequential file flag is invalid (OFF), it indicates that the file corresponding to the virtual sequential file flag is not a file constituting the virtual sequential file but a normal file. In addition, the virtual sequential file flag indicates whether or not the file corresponding to the virtual sequential file flag can be deleted and the file name can be changed. When the virtual sequential file flag is enabled (ON), it indicates that the deletion of the file corresponding to the virtual sequential file flag and the change of the file name are rejected. That is, the data management unit 151 indicates that when the virtual sequential file flag is enabled (ON), the file corresponding to the virtual sequential file flag cannot be deleted or the file name cannot be changed.

In FIG. 2, since the virtual sequential file 171 is composed of the files 163-1, 163-2, and 163-3, the file name in VTOC162-1 = A.I. B. The virtual sequential file flag corresponding to A000 is valid. File name in VTOC162-2 = A. B. Virtual sequential file flag corresponding to A001 and file name in VTOC162-3 = A. B. The virtual sequential file flag corresponding to A002 is also valid.

In the embodiment, the file 163-1 may be referred to as a parent file 163-1 and the files 163-2 and 163-3 may be referred to as child files 163-2 and 163-3.

Based on the file name naming convention of the files that make up the virtual sequential file described above, the file name of the parent file 163-1 is A.I. B. The file names of A000 and the child file 163-2 are A.I. B. The file names of A001 and the child file 163-2 are A.I. B. It is A002.

The storage unit 161-4 stores the catalog register 165.
FIG. 3 is an example of a catalog register.

Catalog register 165 indicates on which volume the file is stored. In the catalog register 165, the file name and the storage location are described in association with each other. Catalog register 165 is an example of correspondence information.

The file name indicates the name of the file.
The storage location is the volume name assigned to the storage unit 161-i.

For example, in the catalog register 165 of FIG. 3, the file name is A.B.A000 and the storage location is VOL001. B. Indicates that the file A000 is stored in the storage unit 161-1 whose volume name is VOL001.

FIG. 4 is a diagram illustrating processing of the information processing apparatus according to the embodiment.
The utility unit 111 realizes the function of the utility program installed in the information processing device 101. The utility unit 111 creates and deletes the virtual sequential file 171. The utility unit 111 registers and deletes information in the catalog register 165. The utility unit 111 sets the virtual sequential file flag in the VTOC 162-i. The utility unit 111 sets the file names based on the above-mentioned naming convention in the parent file 163-1 and the child files 163-2,163-3. The utility unit 111 is an example of the first processing unit.

The JCL execution unit 121 reads the JCL file in which the JCL is described, executes the instruction described in the JCL file, and notifies the application program unit 141 of the processing for the file described in the JCL file.

The command input unit 131 receives a command input by the user from an input device such as a keyboard, and passes the command to the application program unit 141. For example, the entered command contains a processing instruction for the file.

The application program unit 141 realizes the function of the application program installed in the information processing apparatus 101. The application program unit 141 issues OPEN, WRITE (data writing), READ (data reading), and CLOSE to the data management unit 151 for the specified file input from the JCL execution unit 121 or the command input unit 131. do.

When OPEN is issued to the parent file 163-1 by the application program unit 141, the data management unit 151 allocates (file allocation) to all the child files 163-2,163-3. ..

The data management unit 151 issues a WRITE (data writing) from the application program unit 141, closes the file being processed when the file being processed becomes full, and if the next child file exists, the child file is opened. OPEN and continue WRITE.

When CLOSE is issued by the application program unit 141, the data management unit 151 closes the file being processed and unallocates (unallocates the file) to all the child files 163-2 and 163-3. conduct. If the data management unit 151 has written data to the file being processed before CLOSE, the EOF is written to the end of the data in the file, and the EOF is written to the track number storage area at the end. Write the data position (track number).

When the application program unit 141 issues a READ (reading data), the data management unit 151 completes reading the data of the file being processed, and if there is a next child file, the data management unit 151 reads the file to be read to the next child file. Switch to and continue processing.

When the virtual sequential file flag of VTOC162-i is enabled (ON), the data management unit 151 rejects even if there is a request to delete the file, and rejects even if there is a request to change the file name. That is, the data management unit 151 deletes the file and changes the file name only when the virtual sequential file flag is invalid, and deletes the file and changes the file name when the virtual sequential file flag is valid. do not have. The data management unit 151 is an example of the second processing unit.

Hereinafter, various processes in the information processing apparatus 101 will be described with reference to a flowchart.
FIG. 5 is a flowchart of a virtual sequential file creation / deletion process by the utility unit according to the embodiment.

Enter a control statement requesting the user to create or delete a virtual sequential file. The utility unit 111 receives a request for creating or deleting a virtual sequential file by a control statement. The creation request or deletion request includes the file name (for example, ABA000) of the parent file that constitutes the virtual sequential file to be created or deleted.

In step S501, the utility unit 111 determines the type of the received request. When the request for creating the virtual sequential file is received, the control proceeds to step S502, and when the request for deleting the virtual sequential file is received, the control proceeds to step S503.

In step S502, the utility unit 111 creates a virtual sequential file based on the control statement input from the user. Specifically, the utility unit 111 performs the following processes (1) to (3).
(1) The utility unit 111 creates a parent file and a child file included in the virtual sequential file, that is, allocates an area to the volume of the parent file and the child file. In addition, the utility unit 111 registers the created parent file and child file information in the catalog register 165. The utility unit 111 creates one file for one volume. The required number of volumes (number of child files) differs depending on the capacity (size) of the virtual sequential file specified in the control statement, the size of the track number storage area, and the free space of the volume specified in the control statement. For example, the utility unit 111 sorts the specified volumes in descending order of free space, creates files in the order of parent file and child file, and creates child files until the specified virtual sequential file capacity is satisfied. Repeat. The utility unit 111 divides the capacity of the specified virtual sequential file based on the size of the track number storage area and the free space of the specified volume, and creates a parent file and a child file. The maximum number of tracks allocated to the parent file and the child file is 65535 tracks, which is the upper limit of 2 bytes, assuming that the size of the track number storage area is 2 bytes. In this case, the block length per block is 23 KB, and if two blocks can be created in one track, 23 KB × 2 × 65535 tracks = 3 GB is the maximum value of the capacity of the parent file and the child file. If the free space of the volume is smaller than the maximum value of the capacity of the parent file and the child file, the capacity of the parent file or the child file created on the volume becomes the free space of the volume. Further, the file name of the parent file (for example, ABA000) is specified by the control statement input by the user, and the utility unit 111 is based on the file name of the specified parent file and the above-mentioned naming rule. Give the file name to the parent and child files. For example, the file name of the parent file is A. B. It becomes A000, and the file name of the child file is A. B. A001, A. B. A002, ... The utility unit 111 describes the correspondence between the file name given to the file and the volume in which the file is stored in the catalog register 165.
(2) The utility unit 111 describes information about the parent file or child file stored in the storage unit 161-i in the VTOC 162-i of the storage unit 161-i in which the parent file and the child file are stored.
(3) The utility unit 111 effectively sets the virtual sequential file flag corresponding to the parent file or child file of the VTOC162-i of the storage unit 161-i.

In step S503, the utility unit 111 deletes the virtual sequential file. Specifically, the utility unit 111 performs the following processes (1) and (2).
(1) The utility unit 111 invalidates the virtual sequential file flag corresponding to the parent file for which deletion of the VTOC162-i of the storage unit 161-i is requested and the child files included in the virtual sequential file configured by the parent file. Set to.
(2) The utility unit 111 deletes the record corresponding to the file name of the parent file requested to be deleted and the child file included in the virtual sequential file configured by the parent file from the catalog register 165. The utility unit 111 deletes the parent file requested to be deleted and the child files included in the virtual sequential file configured by the parent file. Specifically, the utility unit 111 sends a deletion request for the parent file requested to be deleted and the child files included in the virtual sequential file configured by the parent file to the data management unit 151, and the data management unit 151 deletes the file. Delete the requested parent and child files.

FIG. 6 is a flowchart of a file open process according to the embodiment.
The data management unit 151 receives a file OPEN request from the application program unit 141. The request includes the file name of the file to be opened (file to be processed).

In step S511, the data management unit 151 determines whether the processing target file is a file constituting the virtual sequential file 171 based on the virtual sequential file flag corresponding to the processing target file. When the virtual sequential file flag corresponding to the processing target file is valid (ON), it is determined that the processing target file is a file constituting the virtual sequential file 171, and the control proceeds to step S512. When the virtual sequential file flag corresponding to the processing target file is invalid (OFF), it is determined that the processing target file is not a file constituting the virtual sequential file 171, and the control proceeds to step S513.

When processing the virtual sequential file 171 is performed, the file name of the parent file is included in the request as the file name of the file to be processed.

In step S512, the data management unit 151 causes the data management unit 151 to perform OPEN processing of the processing target file, that is, the parent file. The data management unit 151 performs allocation processing of all child files. Further, the data management unit 151 positions the writing position in the last file of the existing data when the AD (additional) designation is OPEN.

In step S513, the data management unit 151 performs OPEN processing on the processing target file. The OPEN process is the same as the conventional OPEN process for a normal file that is not a virtual sequential file.

FIG. 7 is a flowchart of the light processing according to the embodiment.
Here, it is assumed that the above-mentioned open process has been completed. The data management unit 151 receives a WRITE request to the parent file and write data from the application program unit 141. When data is written to the virtual sequential file 171 from the beginning, the initial position of the writing position is positioned in the first block of the first track of the parent file. When adding data to the virtual sequential file 171, the writing position is positioned in the block next to the data block of the last file in which the existing data exists. The data management unit 151 receives, for example, one block of write data. Here, the processing target file is a parent file 163-1 or a child file 163-2,163-3 in which the writing position is set.

In step S521, the data management unit 151 determines whether or not the data can be written to the currently set writing position of the processing target file. The data management unit 151 determines that the processing target file is full (there is no free space in the processing target file), that is, the current write position is the end of the processing target file, and the control step Proceed to S523. If the file to be processed is not full, the data management unit 151 proceeds to step S522 for control.

In step S522, the data management unit 151 writes the write data to the currently set write position. The data management unit 151 sets the writing position to the next block. If the currently set write position is the last block (last block) of the file to be processed, the next block does not exist, so the write position is left as it is. When the data management unit 151 receives the write data for the block next to the block written this time, the data management unit 151 re-executes the processes after step S521.

In step S523, the data management unit 151 determines whether the processing target file is a file constituting the virtual sequential file 171 based on the virtual sequential file flag corresponding to the processing target file. When the virtual sequential file flag corresponding to the processing target file is valid (ON), it is determined that the processing target file is a file constituting the virtual sequential file 171, and the control proceeds to step S524. When the virtual sequential file flag corresponding to the processing target file is invalid (OFF), it is determined that the processing target file is not a file constituting the virtual sequential file 171, and the control proceeds to step S526.

In step S524, the data management unit 151 determines whether or not there is a child file next to the file to be processed. Specifically, the data management unit 151 determines whether or not there is a child file next to the file to be processed based on the above-mentioned naming convention and the catalog register 165. For example, the file name of the file to be processed is A. B. If it is A000, it is a file name obtained by adding 1 to the final qualifier. B. A001 becomes the file name of the next child file. The data management unit 151 refers to the catalog register 165, and the file name = A. B. When A001 is described in the catalog register 165, it is determined that there is a child file next to the file to be processed. If it is determined that there is a child file next to the file to be processed, control proceeds to step S525, and if it is determined that there is no child file next to the file to be processed, control proceeds to step S526.

In step S525, the data management unit 151 writes the EOF in the processing target file, and writes the final position (track number) of the data in the processing target file in the VTOC corresponding to the processing target file. The data management unit 151 positions the writing position in the first block of the first track of the next child file.

In step S526, the data management unit 151 responds to the application program unit 141 with an error indicating that there is no free space (insufficient space).

FIG. 8 is a flowchart of lead processing according to the embodiment.
Here, it is assumed that the above-mentioned open process has been completed. First, the data management unit 151 receives a request for reading the data of the parent file from the application program unit 141.

In step S531, the data management unit 151 reads the data at the read position of the currently set processing target file. For example, when the data of the virtual sequential file 171 is read from the beginning, the initial position of the read position is positioned in the first block of the first track of the parent file 163-1.

In step S532, the data management unit 151 determines whether the read data is EOF (that is, the end of the file). If the read data is EOF, the control proceeds to step S536, and if the read data is not EOF, the data management unit 151 outputs the read data to the application program unit 141, and sets the read position to the next block. Set.

In step S533, the data management unit 151 determines whether the processing target file is a file constituting the virtual sequential file 171 based on the virtual sequential file flag corresponding to the processing target file. When the virtual sequential file flag corresponding to the processing target file is valid (ON), it is determined that the processing target file is a file constituting the virtual sequential file 171, and the control proceeds to step S534. When the virtual sequential file flag corresponding to the processing target file is invalid (OFF), it is determined that the processing target file is not a file constituting the virtual sequential file 171, and the control proceeds to step S536.

In step S534, the data management unit 151 determines whether or not there is a child file next to the file to be processed. Specifically, the data management unit 151 determines whether or not there is a child file next to the file to be processed based on the above-mentioned naming convention and the catalog register 165. For example, the file name of the file to be processed is A. B. If it is A000, it is a file name obtained by adding 1 to the final qualifier. B. A001 becomes the file name of the next child file. The data management unit 151 refers to the catalog register 165, and the file name = A. B. When A001 is described in the catalog register 165, it is determined that there is a child file next to the file to be processed. If it is determined that there is a child file next to the file to be processed, control proceeds to step S535, and if it is determined that there is no child file next to the file to be processed, control proceeds to step S536.

In step S535, the data management unit 151 positions the read position in the first block of the first track of the next child file of the processing target file. The next child file of the processing target file becomes the new processing target file.

In step S536, the data management unit 151 outputs an EOD (End Of Data) indicating the end of the data to the application program unit 141.

FIG. 9 is a flowchart of a file closing process according to the embodiment.
First, the data management unit 151 receives a file CLOSE request from the application program unit 141. The request includes the file name of the file to be closed (file to be processed).

In step S541, the data management unit 151 determines whether the processing target file is a file constituting the virtual sequential file 171 based on the virtual sequential file flag corresponding to the processing target file. When the virtual sequential file flag corresponding to the processing target file is valid (ON), it is determined that the processing target file is a file constituting the virtual sequential file 171, and the control proceeds to step S542. When the virtual sequential file flag corresponding to the processing target file is invalid (OFF), it is determined that the processing target file is not a file constituting the virtual sequential file 171, and the control proceeds to step S543.

In step S542, the data management unit 151 performs CLOSE processing of the file being processed. In addition, the data management unit 151 performs allocation release processing (unallocation) of all child files of the virtual sequential file including the processing target file.

In step S543, the data management unit 151 performs a CLOSE process on the file to be processed. The CLOSE process is the same as the conventional CLOSE process for a normal file that is not a virtual sequential file.

FIG. 10 is a flowchart of file deletion / file name change processing by the data management unit according to the embodiment.

The data management unit 151 receives a request for deleting a file or changing a fail name from the application program unit 141. The request includes the file name of the file (file to be processed) to be deleted or renamed.

In step S551, the data management unit 151 determines whether the processing target file is a file constituting the virtual sequential file 171 based on the virtual sequential file flag corresponding to the processing target file. When the virtual sequential file flag corresponding to the processing target file is valid (ON), it is determined that the processing target file is a file constituting the virtual sequential file 171, and the control proceeds to step S552. When the virtual sequential file flag corresponding to the processing target file is invalid (OFF), it is determined that the processing target file is not a file constituting the virtual sequential file 171, and the control proceeds to step S553.

In step S552, the data management unit 151 responds with an error to the application program unit 141.

In step S553, the data management unit 151 performs processing (deletion or file name change) on the processing target file according to the received request. The process of deleting or renaming a file is the same as the conventional process.

In this way, when the virtual sequential file flag is valid, it is possible to avoid inconsistency by not deleting the files constituting the virtual sequential file or changing the file name.

According to the information processing apparatus of the embodiment, a plurality of files are treated as one file by automatically switching the file to be read / written, and the file is stored without being limited by the size of the track number storage area. And the stored file can be read.

According to the information processing apparatus of the embodiment, since the track number storage area is not changed as compared with the conventional case, it is not necessary to change the application application program for reading and writing the file.

In order to transfer a large amount of data created by an open server to a conventional mainframe, the open server divides the data into files of 3 GB or less, and the divided files are separately transferred to the mainframe. Further, in order to process as one file on a conventional mainframe, work such as combining separately transferred files into one file using a magnetic tape is performed, which causes a problem that it takes time. According to the information processing apparatus of the embodiment, by using the virtual sequential file, it is not necessary to divide the file on the open server, and the operation time can be shortened.

FIG. 11 is a configuration diagram of an information processing device (computer).
The biometric authentication device 101 of the embodiment can be realized by, for example, an information processing device (computer) 1 as shown in FIG.

The information processing device 1 includes a Central Processing Unit (CPU) 2, a memory 3, an input device 4, an output device 5, a storage unit 6, a recording medium drive unit 7, and a network connection device 8, which are connected to each other by a bus 9. Has been done.

The CPU 2 is a central processing unit (processor) that controls the entire information processing device 1. The CPU 2 operates as a utility unit 111, a JCL execution unit 121, a command input unit 131, an application program unit 141, and a data management unit 151.

The memory 3 includes a Read Only Memory (ROM), a Random Access Memory (RAM), or the like that temporarily stores the program or data stored in the storage unit 6 (or the portable recording medium 10) when the program is executed. Memory. The CPU 2 executes the various processes described above by executing the program using the memory 3.

The input device 4 is used for inputting instructions and information from a user or an operator, acquiring data used in the information processing device 1, and the like. The input device 4 is, for example, a keyboard, a mouse, a touch panel, or the like.

The output device 5 is a device that outputs an inquiry to a user or an operator and a processing result, or operates under the control of the CPU 2. The output device 5 is, for example, a display, a printer, or the like.

The storage unit 6 is, for example, a magnetic disk device, an optical disk device, an SSD (Solid State Drive), or the like. The information processing device 1 stores the above-mentioned programs and data in the storage unit 6, and reads them into the memory 3 and uses them as needed. The storage unit 6 corresponds to the storage unit 161-i.

The recording medium driving unit 7 drives the portable recording medium 10 and accesses the recorded contents. As the portable recording medium, any computer-readable recording medium such as a memory card, a flexible disk, a CD-ROM (Compact Disk Read Only Memory), an optical disk, or a magneto-optical disk is used. The user stores the above-mentioned programs and data in the portable recording medium 10, and reads them into the memory 3 and uses them as needed.

The network connection device 8 is a communication interface that is connected to an arbitrary communication network such as a Local Area Network (LAN) or Wide Area Network (WAN) and performs data conversion associated with the communication. The network connection device 8 transmits data to a device connected via a communication network, and receives data from a device connected via a communication network.

The information processing device 1 does not have to include all the components shown in FIG. 11, and some components may be omitted depending on the application or conditions.

The following additional notes will be further disclosed with respect to the above embodiments.
(Appendix 1)
With multiple storage units
Divide the specified file into a parent file and one or more child files based on the size of the storage area that stores information indicating the amount of data recorded in the file and the size of the specified file. The file identification information is given to the parent file and the one or more child files based on a predetermined rule, and the file identification information is given to the parent file and the one or more child files, respectively. The first processing unit that stores the correspondence information indicating the correspondence between the file identification information and the storage unit in which the parent file and one or more child files are stored in any of the plurality of storage units. When,
Upon receiving the read request for designating the parent file, the parent file is read from the storage unit in which the parent file is stored among the plurality of storage units, and based on the correspondence information and the predetermined rule, the above 1 It is determined whether the above child files are stored in any of the plurality of storage units, and when the above one or more child files are stored, the above 1 is stored from the storage unit in which the one or more child files are stored. The second processing unit that reads the above child files and
Information processing device equipped with.
(Appendix 2)
When the second processing unit receives a write request for designating the parent file, the second processing unit writes data to the parent file if there is space in the parent file, and if the parent file is full, the correspondence relationship Based on the information and the predetermined rule, it is determined whether the one or more child files are stored in any of the plurality of storage units, and if the one or more child files are stored, the data is stored. The information processing apparatus according to Appendix 1, wherein the information processing device is written in one or more child files.
(Appendix 3)
Each of the plurality of storage units stores a flag indicating whether or not the file stored by itself can be deleted and the file identification information can be changed.
When the parent file or the child file is stored in the plurality of storage units, the first processing unit effectively sets the flag.
The second processing unit refers to the flag corresponding to the file for which the deletion request is received when the file deletion request is received, and responds with an error when the flag is valid. Information processing device.
(Appendix 4)
When the second processing unit receives a request for changing the file identification information of the file, the second processing unit refers to the flag corresponding to the file for which the change is requested, and responds with an error when the flag is valid. The information processing device according to Appendix 3.
(Appendix 5)
When the first processing unit receives the file deletion request, the first processing unit sets the flag corresponding to the deletion-requested file to invalid, requests the second processing unit to delete the deletion-requested file, and then requests the second processing unit to delete the file.
The information processing apparatus according to Appendix 3 or 4, wherein the second processing unit deletes the file requested to be deleted.
(Appendix 6)
Based on the size of the storage area where a computer with multiple storage units stores information indicating the amount of data recorded in the file and the size of the specified file, the specified file is referred to as the parent file. It is divided into one or more child files and stored in the plurality of storage units.
File identification information is given to the parent file and the one or more child files based on a predetermined rule, and the file identification information given to the parent file and the one or more child files, respectively, and the parent file. And the correspondence information indicating the correspondence relationship with the storage part which each one or more child files was stored is stored in one of the plurality of storage parts.
When a read request for designating the parent file is received, the parent file is read from the storage unit in which the parent file is stored among the plurality of storage units.
When it is determined whether the one or more child files are stored in any of the plurality of storage units based on the correspondence information and the predetermined rule, and the one or more child files are stored. An information processing method characterized by reading out the one or more child files from a storage unit in which the one or more child files are stored.
(Appendix 7)
When a write request for designating the parent file is received, data is written to the parent file if the parent file is free, and if the parent file is full, the correspondence information and the predetermined rule are applied. Based on this, it is determined whether the one or more child files are stored in any of the plurality of storage units, and if the one or more child files are stored, the data is stored in the one or more child files. The information processing method according to Appendix 6, wherein the data is written.
(Appendix 8)
Each of the plurality of storage units stores a flag indicating whether or not the file stored by itself can be deleted and the file identification information can be changed.
When the parent file or the child file is stored in the plurality of storage units, the first processing unit of the computer effectively sets the flag.
When the second processing unit of the computer receives the file deletion request, it refers to the flag corresponding to the file for which the deletion is requested, and responds with an error when the flag is valid. Or the information processing method according to 7.
(Appendix 9)
When the second processing unit receives a request for changing the file identification information of the file, the second processing unit refers to the flag corresponding to the file for which the change is requested, and responds with an error when the flag is valid. The information processing method according to Appendix 8.
(Appendix 10)
When the first processing unit receives the file deletion request, the first processing unit sets the flag corresponding to the deletion-requested file to invalid, requests the second processing unit to delete the deletion-requested file, and then requests the second processing unit to delete the file.
The information processing method according to Appendix 8 or 9, wherein the second processing unit deletes the file requested to be deleted.
(Appendix 11)
Based on the size of the storage area that stores information indicating the amount of data recorded in the file on a computer with multiple storage units and the size of the specified file, the specified file is referred to as the parent file. It is divided into one or more child files and stored in the plurality of storage units.
File identification information is given to the parent file and the one or more child files based on a predetermined rule, and the file identification information given to the parent file and the one or more child files, respectively, and the parent file. And the correspondence information indicating the correspondence relationship with the storage part which each one or more child files was stored is stored in one of the plurality of storage parts.
When a read request for designating the parent file is received, the parent file is read from the storage unit in which the parent file is stored among the plurality of storage units.
When it is determined whether the one or more child files are stored in any of the plurality of storage units based on the correspondence information and the predetermined rule, and the one or more child files are stored. A program that executes a process of reading the one or more child files from the storage unit in which the one or more child files are stored.
(Appendix 12)
When the computer receives a write request for designating the parent file, the computer writes data to the parent file if there is space in the parent file, and if the parent file is full, the correspondence information and the correspondence information and the above. Based on a predetermined rule, it is determined whether the one or more child files are stored in any of the plurality of storage units, and when the one or more child files are stored, the data is stored in the one or more. The program according to Appendix 11, which is characterized by writing to a child file of.
(Appendix 13)
Each of the plurality of storage units stores a flag indicating whether or not the file stored by itself can be deleted and the file identification information can be changed.
When the parent file or the child file is stored in the plurality of storage units, the first processing unit of the computer effectively sets the flag.
When the second processing unit of the computer receives the deletion request of the file, the second processing unit refers to the flag corresponding to the file for which the deletion request is made, and responds with an error when the flag is valid. Or the program described in 12.
(Appendix 14)
When the second processing unit receives a request for changing the file identification information of the file, the second processing unit refers to the flag corresponding to the file for which the change is requested, and responds with an error when the flag is valid. The program described in Appendix 13.
(Appendix 15)
When the first processing unit receives the file deletion request, the first processing unit sets the flag corresponding to the deletion-requested file to invalid, requests the second processing unit to delete the deletion-requested file, and then requests the second processing unit to delete the file.
The program according to Appendix 13 or 14, wherein the second processing unit deletes the file requested to be deleted.

101 Information processing device 111 Utility unit 121 JCL execution unit 131 Command input unit 141 Application program unit 151 Data management unit 161-i Storage unit 162-i VTOC
163-i file 165 Catalog register

Claims (7)

With multiple storage units
Divide the specified file into a parent file and one or more child files based on the size of the storage area that stores information indicating the amount of data recorded in the file and the size of the specified file. The file identification information is given to the parent file and the one or more child files based on a predetermined rule, and the file identification information is given to the parent file and the one or more child files, respectively. The first processing unit that stores the correspondence information indicating the correspondence between the file identification information and the storage unit in which the parent file and one or more child files are stored in any of the plurality of storage units. When,
Upon receiving the read request for designating the parent file, the parent file is read from the storage unit in which the parent file is stored among the plurality of storage units, and based on the correspondence information and the predetermined rule, the above 1 It is determined whether the above child files are stored in any of the plurality of storage units, and when the above one or more child files are stored, the above 1 is stored from the storage unit in which the one or more child files are stored. The second processing unit that reads the above child files and
Information processing device equipped with. When the second processing unit receives a write request for designating the parent file, the second processing unit writes data to the parent file if there is space in the parent file, and if the parent file is full, the correspondence relationship Based on the information and the predetermined rule, it is determined whether the one or more child files are stored in any of the plurality of storage units, and if the one or more child files are stored, the data is stored. The information processing apparatus according to claim 1, wherein the data is written to the one or more child files. Each of the plurality of storage units stores a flag indicating whether or not the file stored by itself can be deleted and the file identification information can be changed.
When the parent file or the child file is stored in the plurality of storage units, the first processing unit effectively sets the flag.
The second processing unit refers to the flag corresponding to the file for which the deletion request is received when the file deletion request is received, and responds with an error when the flag is valid. The information processing device described. When the second processing unit receives a request for changing the file identification information of the file, the second processing unit refers to the flag corresponding to the file for which the change is requested, and responds with an error when the flag is valid. The information processing device according to claim 3. When the first processing unit receives the file deletion request, the first processing unit sets the flag corresponding to the deletion-requested file to invalid, requests the second processing unit to delete the deletion-requested file, and then requests the second processing unit to delete the file.
The information processing device according to claim 3 or 4, wherein the second processing unit deletes the file requested to be deleted. Based on the size of the storage area where a computer with multiple storage units stores information indicating the amount of data recorded in the file and the size of the specified file, the specified file is referred to as the parent file. It is divided into one or more child files and stored in the plurality of storage units.
File identification information is given to the parent file and the one or more child files based on a predetermined rule, and the file identification information given to the parent file and the one or more child files, respectively, and the parent file. And the correspondence information indicating the correspondence relationship with the storage part which each one or more child files was stored is stored in one of the plurality of storage parts.
When a read request for designating the parent file is received, the parent file is read from the storage unit in which the parent file is stored among the plurality of storage units.
When it is determined whether the one or more child files are stored in any of the plurality of storage units based on the correspondence information and the predetermined rule, and the one or more child files are stored. An information processing method characterized by reading out the one or more child files from a storage unit in which the one or more child files are stored. Based on the size of the storage area that stores information indicating the amount of data recorded in the file on a computer with multiple storage units and the size of the specified file, the specified file is referred to as the parent file. It is divided into one or more child files and stored in the plurality of storage units.
File identification information is given to the parent file and the one or more child files based on a predetermined rule, and the file identification information given to the parent file and the one or more child files, respectively, and the parent file. And the correspondence information indicating the correspondence relationship with the storage part which each one or more child files was stored is stored in one of the plurality of storage parts.
When a read request for designating the parent file is received, the parent file is read from the storage unit in which the parent file is stored among the plurality of storage units.
When it is determined whether the one or more child files are stored in any of the plurality of storage units based on the correspondence information and the predetermined rule, and the one or more child files are stored. A program that executes a process of reading the one or more child files from the storage unit in which the one or more child files are stored.

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