JP6503995B2 - Program, information processing apparatus, and method for automatically generating job control language - Google Patents

Description

  The present invention relates to a program, an information processing apparatus, and a method of automatically generating a job control language.

  In recent years, the transition from general-purpose machines such as mainframes to relatively small-scale server systems has progressed. In addition, the movement to migrate data to the cloud system is also spreading for reasons such as security measures and cost reduction. A large amount of data handled by a general-purpose machine is backed up to tape media. Therefore, at the time of system migration, there is an operation of writing the files stored in the tape medium one by one to the migration destination disk.

  The process of writing a file stored in a tape medium to a disk is executed using Job Control Language (JCL). The JCL is created manually while checking the amount of data per file and the free disk space of the migration destination. Therefore, at the time of system migration, since the files to be migrated are huge, creation work of JCL has been a big effort.

  Regarding file migration performed when replacing a magnetic disk, label information of the input file is analyzed, extraction of parameters used for migration and calculation of file capacity are executed, and the original JCL is edited based on the execution result. A technique to output various JCL has been proposed.

  A compiler has been proposed which converts a processing program of a data processing apparatus from a source written in a high-level language into an object written in a machine language. This compiler automatically creates input / output environment setting information (job control statement) used when executing an object.

  A software resource migration system has been proposed which converts the host system JCL into the server system JCL. The software resource migration system refers to conversion rule information for converting a host system JCL into a server system JCL, and converts the host system JCL into a server system JCL based on the conversion rule information.

Japanese Patent Application Laid-Open No. 04-217022 Japanese Patent Application Laid-Open No. 57-159349 JP, 2010-205068, A

  In the above technology, it is assumed that a system utility is used as a processing program for writing a file to a tape medium. However, there are also cases where a unique processing program different from the system utility is used. If a processing program not suitable for automatic generation of JCL used for file migration is used, there is a risk that the reliability of the automatically generated JCL can not be guaranteed.

  According to one aspect, an object of the present disclosure is to provide a program capable of generating a more reliable control program, an information processing apparatus, and a method of automatically generating a job control language.

  According to one aspect, an information processing apparatus is provided that generates a control program used for data migration of a file recorded on a tape medium. The information processing apparatus uses a storage unit that stores information of a first processing program used when writing a file to a tape medium, and a storage unit that uses the tape medium to write a migration target file to the tape medium. The information of the second processing program is acquired, and when the second processing program matches the first processing program based on the acquired information, the file to be transferred is transferred using the first processing program. And a computing unit that generates a control program of a job control language that executes processing for writing data to the migration destination.

  According to one aspect, more reliable control programs can be generated.

It is a figure showing an example of the information processor concerning a 1st embodiment. It is a figure showing an example of the system concerning a 2nd embodiment. It is the figure which showed an example of the hardware which can implement | achieve the function of the information processing apparatus which concerns on 2nd Embodiment. It is a block diagram showing an example of a function which an information processor concerning a 2nd embodiment has. It is a figure showing an example of registration utility information concerning a 2nd embodiment. It is a figure showing an example of label information used for generation of primary tape information concerning a 2nd embodiment. It is a figure showing an example of primary tape information concerning a 2nd embodiment. It is a figure showing an example of secondary tape information concerning a 2nd embodiment. It is a figure showing an example of the JCL file concerning a 2nd embodiment. It is the flow which showed the flow of the tape information generation processing concerning a 2nd embodiment. It is a flow figure showing the flow of the JCL generation processing concerning a 2nd embodiment. It is a figure showing the format of volume label information. FIG. 6 is a diagram showing the format of a file label 1; FIG. 10 is a diagram showing the format of a file label 2;

  Embodiments of the present invention will be described below with reference to the attached drawings. In the present specification and drawings, elements having substantially the same function may be omitted to avoid redundant description by attaching the same reference numerals.

<1. First embodiment>
The first embodiment will be described. The first embodiment relates to a method of automatically generating a control program used when migrating a file of a tape medium to a disk device mounted with an HDD (Hard Disk Drive) or an SSD (Solid State Drive).

  An information processing apparatus 10 capable of realizing the above method will be described with reference to FIG. The information processing apparatus 10 is an example of the information processing apparatus according to the first embodiment. FIG. 1 is a diagram showing an example of an information processing apparatus according to the first embodiment. The information processing apparatus 10 is, for example, a general-purpose machine such as a mainframe.

As shown in FIG. 1, the information processing apparatus 10 includes a storage unit 11 and an operation unit 12.
The storage unit 11 is a volatile storage device such as a random access memory (RAM) or a non-volatile storage device such as an HDD or a flash memory. The calculation unit 12 is a processor such as a central processing unit (CPU) or a digital signal processor (DSP). However, the calculation unit 12 may be an electronic circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). The arithmetic unit 12 executes, for example, a program stored in the storage unit 11 or another memory.

  The information processing apparatus 10 generates a control program of job control language (JCL) for transferring files of the tape medium 20a. The tape medium 20a is, for example, an LTO (Linear Tape-Open) medium. The tape medium 20 a is loaded into the tape device 20. The tape device 20 is a device that executes reading and writing of data with respect to the loaded tape medium 20a. The information processing apparatus 10 is connected to a tape device 20.

  The storage unit 11 stores information of a pre-registered first processing program used when writing a file to the tape medium 20 a. The first processing program is, for example, a system utility used to write a file. The system utility is, for example, a processing program provided by an operating system (OS) or a management tool for a user having administrator authority. In the storage unit 11, information of processing programs other than the system utility may be registered as information of the first processing program.

  Hereinafter, information of the first processing program registered in advance in the storage unit 11 may be referred to as registration information 11 a. In the example of FIG. 1, the program name “PRG # 1” of the first processing program is stored in the storage unit 11 as the registration information 11 a.

  The operation unit 12 acquires label information 30 including information of a second processing program used when writing a file to be transferred to the tape medium 20 a from the tape medium 20 a loaded in the tape device 20. Volume label information (see, eg, FIG. 12), file label 1 (see, eg, FIG. 13), and file label 2 (see, eg, FIG. 14) described later are examples of the label information 30.

  For example, the tape medium 20a stores, for each file, label information 30 including information such as a file name, a program name of a second processing program, a file capacity, and a file record format. In the example of FIG. 1, for the file having the file name “FILE # 1,” information such as the program name “PRG # 1” of the second processing program, the file capacity “500”, and the record format “fixed length” is label information 30 are stored in the tape medium 20a. The file capacity number indicates the number of tracks.

  Also, for a file with the file name “FILE # 2”, information such as the program name “PRG # 2”, the file capacity “50”, and the record format “variable length” of the second processing program is used as the label information 30 as a tape medium It is stored in 20a. Furthermore, for the file having the file name “FILE # 3”, information such as the program name “PRG # 3” of the second processing program, the file capacity “1100”, and the record format “indefinite length” is used as the label information 30 It is stored in 20a.

  The operation unit 12 acquires the label information 30 as described above, and determines whether there is a first processing program that is the same as the second processing program. If there is a first processing program that is the same as the second processing program, the computing unit 12 executes a control program of a job control language that causes the file to be migrated to be written to the migration destination using the first processing program. Generate

  In the example of FIG. 1, there is a first processing program “PRG # 1” which is the same as the second processing program “PRG # 1” included in the label information 30. Therefore, the calculation unit 12 generates a control program 40a of a job control language that executes a process of writing the file to be migrated to the migration destination using the first processing program "PRG # 1".

  On the other hand, for the second processing program which is not the same as the first processing program among the second processing programs described in the label information 30, the operation unit 12 executes the processing according to the record format.

  When the record format is fixed length or variable length, the calculation unit 12 generates a control program of job control language that executes processing of writing the file to be migrated to the migration destination using the second processing program. When the record format is an indefinite length, the operation unit 12 avoids the process of generating a job control language control program for the file to be migrated.

  In the example of FIG. 1, the record format of the second processing program “PRG # 2” different from the first processing program “PRG # 1” is “variable length”. Therefore, the calculation unit 12 generates a job control language control program 40b that executes a process of writing the file to be migrated to the migration destination using the second processing program “PRG # 2”.

  On the other hand, the record format of the second processing program “PRG # 3” different from the first processing program “PRG # 1” is “invariant length”. Therefore, the operation unit 12 avoids the process of generating the control program of the job control language for the file “FILE # 3” corresponding to the second processing program “PRG # 3”.

  When using a processing program whose specification such as a system utility is clear, since the description method of the JCL is determined, the operation unit 12 can automatically generate a correct control program in a stable manner. On the other hand, when using a processing program whose specification is not clear, it may be difficult to automatically generate a correct control program because the method of describing the JCL is different from when using a system utility.

  However, even when using a processing program whose specification is not clear, if the record format is fixed length or variable length, the operation unit 12 stably and correctly controls by describing JCL in a sequential organization format. Program can be generated automatically. As described above, by separating the generation processing of the control program described in the JCL according to the type of the second processing program and the record format of the file, a highly reliable control program can be automatically generated.

  Note that, for the file for which the control program generation process has been avoided, the calculation unit 12 stores the information of the file in the storage unit 11 so that the user can refer to it later. In addition, the calculation unit 12 may notify the user of avoidance of processing, or may provide the user with information of a file whose processing has been avoided by displaying on a display device (not shown) or the like. .

The first embodiment has been described above.
<2. Second embodiment>
Next, a second embodiment will be described. The second embodiment relates to a method of automatically generating a control program used when migrating a file of a tape medium to a disk device mounted with a storage device such as an HDD or an SSD.

[2-1. system]
First, a system according to a second embodiment will be described with reference to FIG. FIG. 2 is a diagram showing an example of a system according to the second embodiment.

  As shown in FIG. 2, the system according to the second embodiment includes an information processing apparatus 100, a tape device 200, a disk device 300, and a terminal device 400. The information processing apparatus 100 is connected to the tape device 200, the disk device 300, and the terminal device 400. Also, the information processing apparatus 100 is, for example, a mainframe.

  The tape device 200 is a device for reading and writing data of the loaded tape medium 210. The tape medium 210 is, for example, an LTO medium. The information processing apparatus 100 reads and writes data of the tape medium 210 via the tape device 200. The disk device 300 has a storage device such as an HDD or an SSD. The disk device 300 may be a cloud storage connected to the information processing apparatus 100 via a network. The terminal device 400 is an operation terminal for the user to operate the information processing apparatus 100.

  The above has described the system. A system to which the technology according to the second embodiment can be applied is not limited to the example of FIG. 2, but for convenience of explanation, the description will be given below assuming the system illustrated in FIG. 2.

[2-2. hardware]
Next, the hardware of the information processing apparatus 100 will be described with reference to FIG. FIG. 3 is a diagram showing an example of hardware capable of realizing the function of the information processing apparatus according to the second embodiment.

  The functions of the information processing apparatus 100 can be realized, for example, using the hardware resources of the information processing apparatus shown in FIG. That is, the functions of the information processing apparatus 100 are realized by controlling the hardware shown in FIG. 3 using a computer program.

  As shown in FIG. 3, this hardware mainly includes a CPU 902, a ROM (Read Only Memory) 904, a RAM 906, a host bus 908, and a bridge 910. Further, the hardware includes an external bus 912, an interface 914, an input unit 916, an output unit 918, a storage unit 920, a drive 922, a connection port 924, and a communication unit 926.

  The CPU 902 functions as, for example, an arithmetic processing unit or a control unit, and controls the entire operation of each component or a part thereof based on various programs recorded in the ROM 904, the RAM 906, the storage unit 920, or the removable recording medium 928. . The ROM 904 is an example of a storage device that stores a program read by the CPU 902, data used for an operation, and the like. The RAM 906 temporarily or permanently stores, for example, a program read by the CPU 902 and various parameters that change when the program is executed.

  These elements are connected to one another via, for example, a host bus 908 capable of high-speed data transmission. On the other hand, the host bus 908 is connected to the external bus 912, which has a relatively low data transmission speed, via the bridge 910, for example. In addition, as the input unit 916, for example, a mouse, a keyboard, a touch panel, a touch pad, a button, a switch, a lever, or the like is used. Furthermore, as the input unit 916, a remote controller capable of transmitting a control signal using infrared rays or other radio waves may be used.

The output unit 918 is, for example, a display device such as a liquid crystal display (LCD) or an electro-luminescence display (ELD), or an audio output device such as a speaker.
The storage unit 920 is a device for storing various data. As the storage unit 920, for example, a magnetic storage device such as an HDD is used. In addition, as the storage unit 920, a semiconductor storage device such as an SSD or a RAM disk, an optical storage device, or a magneto-optical storage device may be used.

  The drive 922 is a device that reads information recorded in a removable recording medium 928 which is a removable recording medium, or writes information in the removable recording medium 928. As the removable recording medium 928, for example, a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory can be used. The drive 922 may be omitted.

  The connection port 924 is a port for connecting an externally connected device 930 such as a universal serial bus (USB) port, an IEEE 1394 port, a small computer system interface (SCSI), or an RS-232C port. For example, a printer may be used as the external connection device 930.

  The communication unit 926 is a communication device for connecting to the network 932. As the communication unit 926, for example, a communication circuit for LAN (Local Area Network), a communication circuit for optical communication, or the like can be used. A network 932 connected to the communication unit 926 is a wired or wirelessly connected network, and includes, for example, the Internet, a LAN, a Fiber Channel (FC) network, and the like.

The hardware of the information processing apparatus 100 has been described above. The function of the terminal device 400 can also be realized using part or all of the hardware illustrated in FIG. 3.
[2-3. Function of Information Processing Device]
Next, the function of the information processing apparatus 100 will be described with reference to FIG. FIG. 4 is a block diagram showing an example of functions of the information processing apparatus according to the second embodiment.

As shown in FIG. 4, the information processing apparatus 100 includes a storage unit 101, a tape information generation unit 102, and a JCL generation unit 103.
The functions of the tape information generation unit 102 and the JCL generation unit 103 can be realized using the above-described CPU 902 or the like. The function of the storage unit 101 can be realized using the above-described RAM 906, storage unit 920, and the like.

(Storage unit 101)
The storage unit 101 stores registered UTL information 101a, primary tape information 101b, secondary tape information 101c, and JCL file 101d.

  The registered UTL information 101a is information indicating a utility name for specifying a system utility, as shown in FIG. FIG. 5 is a diagram showing an example of registration utility information according to the second embodiment. For example, the utility name is represented by 8-byte data. The utility name included in the registered UTL information 101a is registration information registered in advance by the user. In the example of FIG. 5, the utility name “FCPY” is registered as the registered UTL information 101 a.

  The primary tape information 101 b is tape information extracted from label information (volume label, file label 1, file label 2) stored in the tape medium 210. The method of generating the primary tape information 101b will be described later. The secondary tape information 101c is tape information obtained by adding the analysis result of the primary tape information 101b to the primary tape information 101b. The method of generating the secondary tape information 101c will be described later. The JCL file 101 d is a control program described in JCL. The method of generating the JCL file 101d will be described later.

(Tape information generation unit 102)
The tape information generation unit 102 generates the primary tape information 101b. As shown in FIG. 6, the tape information generation unit 102 reads a volume label and two types of file labels (file label 1 and file label 2) from the tape medium 210. FIG. 6 is a diagram showing an example of label information used to generate primary tape information according to the second embodiment.

  As shown in FIG. 6A, the volume label includes a volume serial number ("URIAGE" in this example) for identifying the volume. For example, the volume serial number is represented by 6-byte data.

  The file label 1 includes, as shown in FIG. 6B, the file name and block count (number of blocks) for each file included in the volume indicated by the volume label. For example, the file name is represented by 17-byte data, and the block count is represented by 6-byte data. In this example, the file name “URIAGE.H14.SERVER” and the block count “1000” are included in the file label 1.

  The file label 2 includes, as shown in FIG. 6C, the record format for each file included in the volume indicated by the volume label, the block length, the record length, and the job name / program name. For example, the record format is represented by 1-byte data, the block length is represented by 5-byte data, the record length is represented by 5-byte data, and the job name / program name is 17-byte data. Be expressed.

  In FIG. 6C, the record format "F" represents a fixed length, and the record format "U" represents an indefinite length (atypical). Also, the record format "V" represents a variable length. The description “URIAGE_1 / FCPY” in the job name / program name column means that the job name is “URIAGE_1” and the program name is “FCPY”. In addition, although the record length of FILE # 3 is “0”, when the record format is “U”, “0” is described in the column of record length.

  The tape information generation unit 102 generates the primary tape information 101b based on the read label information. For example, the tape information generation unit 102 generates the primary tape information 101b as shown in FIG. 7 based on the label information illustrated in FIG. FIG. 7 is a diagram showing an example of primary tape information according to the second embodiment.

  The tape information generation unit 102 associates the volume serial number extracted from the volume label with each file. Further, the tape information generation unit 102 assigns a storage order indicating the order stored in the tape medium 210 to each file. In addition, the tape information generation unit 102 associates the file name extracted from the file label 1, the program name extracted from the file label 2, the record format, the record length, and the block length with each file.

  The tape information generation unit 102 also calculates the free space (file size) to be secured at the migration destination. First, the tape information generation unit 102 calculates the number of blocks X that can be stored in one track. The number of blocks X is given by an integer value obtained by rounding off the decimal part of the value obtained by dividing the track length by the block length. Then, the tape information generation unit 102 calculates the file capacity using the calculated number of blocks X. The file capacity is given by an integer value obtained by rounding up the decimal places of the value obtained by dividing the number of blocks by X. The file capacity is represented by the number of tracks.

  In the case of FILE # 1, for example, assuming that the track length is 47476, since the track length (47476) / block length (20000) is about 2.37, the block number X is rounded off after the decimal point of 2.37. The integer value is 2. The file capacity is 500 since the number of blocks is (1000) / X (2). The same applies to FILEs # 2 and # 3. The tape information generation unit 102 associates the calculated file capacity with the information of the corresponding file.

  The above process generates primary tape information 101b in which volume serial number, storage order, file name, program name, file capacity, record format, record length, and block length are associated with each file (see FIG. 7). . The tape information generation unit 102 stores the generated primary tape information 101 b in the storage unit 101.

(JCL generation unit 103)
The JCL generation unit 103 generates secondary tape information 101c based on the primary tape information 101b. As shown in FIG. 8, the secondary tape information 101c is information obtained by adding an item "target for generation" to the primary tape information 101b. FIG. 8 is a diagram showing an example of secondary tape information according to the second embodiment. The generation target "OK" means that the JCL file 101d is generated for the corresponding file. The generation target “NG” means that the JCL file 101 d is not generated for the corresponding file.

  The determination as to whether or not to generate the JCL file 101d is made based on the primary tape information 101b. First, the JCL generation unit 103 refers to the primary tape information 101b, and determines whether the program name corresponding to the corresponding file matches the utility name of the registered UTL information 101a. That is, the JCL generation unit 103 determines whether the processing program used when writing the corresponding file is a system utility.

  If there is a utility name matching the program name in the registered UTL information 101a, the JCL generation unit 103 sets the corresponding file as the generation target of the JCL file 101d (generation target “OK”). In the example of FIG. 8, since the program name “FCPY” corresponding to the FILE # 1 is in the registered UTL information 101a (see FIG. 5), the JCL generation unit 103 takes the file with the file name “URIAGE.H14.SERVER”. Set as generation target (generation target "OK").

  If there is no utility name matching the program name in the registered UTL information 101a, the JCL generation unit 103 refers to the record format corresponding to the corresponding file. When the record format is “F” (fixed length) or “V” (variable length), the JCL generation unit 103 sets the corresponding file as a generation target of the JCL file 101 d (generation target “OK”). On the other hand, when the record format is “U” (indefinite length), the JCL generation unit 103 excludes the corresponding file from the generation target of the JCL file 101 d (generation target “NG”).

  In the example of FIG. 8, the program name “URI 100 B” corresponding to FILE # 2 is not in the registered UTL information 101 a (see FIG. 5), so the JCL generation unit 103 determines that the file name is “URIAGE.H14.TOTAL”. Refer to the corresponding record format. Since the record format of this file is “F” (fixed length), the JCL generation unit 103 sets this file as a generation target (generation target “OK”).

  Further, since the program name "VOLBK" corresponding to FILE # 3 is not in the registered UTL information 101a (see FIG. 5), the JCL generation unit 103 records the file name corresponding to the file "URIAGE.H14.BACKUP". Refer to the format. Since the record format of this file is “U” (indefinite length), the JCL generation unit 103 excludes this file from the generation target (generation target “NG”).

  The JCL generation unit 103 stores the secondary tape information 101c generated as described above in the storage unit 101. By storing the secondary tape information 101c in the storage unit 101, the user can easily confirm the migrated file and the unmigrated file after migrating the file based on the automatically generated JCL file 101d. become able to. In addition, since the same contents as the primary tape information 101b are written, it is possible for the user to easily recognize the cause of the deviation from the generation target of the JCL file 101d.

  Also, the JCL generation unit 103 generates the JCL file 101d using the primary tape information 101b. When the primary tape information 101b illustrated in FIG. 7 is used, the JCL generation unit 103 generates a JCL file 101d as illustrated in FIG. FIG. 9 is a diagram showing an example of a JCL file according to the second embodiment.

  For example, the JCL generation unit 103 generates a JCL file 101 d by embedding the content of the primary tape information 101 b in the template using a template of a JCL control statement. In this case, the template is prepared in advance and stored in the storage unit 101. Also, the template is a JCL control statement when using a system utility.

  Numerals 01 to 17 displayed at the left end of FIG. 9 are line numbers given to make it easy to refer to the line of the JCL file 101 d for the convenience of explanation. The first line is a JCL control statement specifying a target volume of the JCL file 101 d. The 16th and 17th lines are JCL control statements described at the end of the JCL file 101d. The second to eighth lines are JCL control statements for the transition of FILE # 1, and the ninth to sixteenth lines are JCL control statements for the transition of FILE # 2.

  Also, the underlines in the JCL file 101d illustrated in FIG. 9 are attached for convenience so as to refer to the part where the information described in the primary tape information 101b is entered. For example, the part except an underline part can be prepared as a template. The above-described template is provided, for example, in the second to eighth lines excluding the underlined part and in the ninth to fifteenth lines excluding the underlined part.

First, the JCL generation unit 103 extracts the volume serial number “URIAGE” from the primary tape information 101 b and describes it after “¥ JOB” on the first line.
Next, the JCL generation unit 103 extracts, from the primary tape information 101b, the program name "FCPY" corresponding to the generation target FILE # 1 in the storage order "1". Since the processing program whose program name is "FCPY" is a system utility registered in the registered UTL information 101a, the JCL generation unit 103 inserts the above-described template next to the JCL control statement of "\ JOB". Then, the JCL generation unit 103 describes the program name “FCPY” after “¥ EX” on the second line.

  Similarly, the JCL generation unit 103 underlines the third and fourth lines under the volume serial number “URIAGE” extracted from the primary tape information 101 b, the file name “URIAGE.H14.SERVER”, and the file capacity “500” Insert in the description part). In the third line, the numeral “1” of “FILE = (URIAGE.H14.SERVER, 1, SL)” indicates the storage order, and the letter “SL” indicates a standard label.

  Next, the JCL generation unit 103 extracts, from the primary tape information 101b, the program name "URI 100B" corresponding to the generation target FILE # 2 in the storage order "2". The processing program whose program name is “URI 100 B” is not a system utility registered in the registered UTL information 101 a. Therefore, the JCL generation unit 103 inserts the above-described template next to (after “/ FIN”) the JCL control statement corresponding to the process of FILE # 1.

  Then, the JCL generation unit 103 describes the program name “FCPY” after “¥ EX” on the ninth line. In addition, the JCL generation unit 103 inserts the file name “URIAGE.H14.TOTAL” extracted from the primary tape information 101b and the file capacity “50” into the underlined portion (prescribed description portion) on the 10th and 11th lines. Further, the JCL generation unit 103 describes “¥ JEND” and “¥ FIN” on the 16th and 17th lines.

  The JCL generation unit 103 generates the JCL file 101d by the above method. The order of the JCL control statements shown in FIG. 9 and the description described above is an example, and can be appropriately modified according to the specifications of the system, file, etc. to be used. Further, although the XSP-based JCL has been described as an example, the present invention can be similarly applied to other JCLs such as MVS (including MSP) and VSE. Such modifications also belong to the technical scope of the second embodiment.

The functions of the information processing apparatus 100 have been described above.
[2-4. Processing flow]
Next, the flow of processing performed by the information processing apparatus 100 will be described.

(Tape information generation)
First, the flow of the tape information generation process performed by the information processing apparatus 100 will be described with reference to FIG. FIG. 10 is a flowchart showing the flow of tape information generation processing according to the second embodiment.

  (S101) The tape information generation unit 102 acquires label information (see FIG. 6) from the tape medium 210 via the tape device 200. For example, the tape information generation unit 102 reads a volume label from the tape medium 210 and extracts a volume serial number. Further, the tape information generation unit 102 reads the file label from the tape medium 210, and extracts the file name, the block count, the record format, the block length, the record length, and the job name / program name for each file.

  (S102) The tape information generation unit 102 determines whether or not there is a file not selected as a target of the process of S103 and subsequent steps. When there is an unselected file, the tape information generation unit 102 selects one file from among the unselected files as a target file. If the target file is selected, the process proceeds to S103. On the other hand, when there is no unselected file, the series of processing shown in FIG. 10 ends.

  (S103) The tape information generation unit 102 adds label information such as the volume serial number acquired in S101 to the primary tape information 101b (see FIG. 7) for the target file. For example, when the target file is FILE # 1 in FIG. 6, the tape information generation unit 102 adds the volume serial number "URIAGE", the file name "URIAGE.H14.SERVER", the program name "FCPY", etc. to the primary tape information 101b. Do.

  (S104) The tape information generation unit 102 adds a storage order number indicating the storage order of the target file to the primary tape information 101b. The storage order number is a number representing the order in which the target file is stored in the tape medium 210.

(S105) The tape information generation unit 102 calculates the file capacity of the target file (free space secured at the migration destination).
First, the tape information generation unit 102 calculates the number of blocks X that can be stored in one track. The number of blocks X is given by an integer value obtained by rounding off the decimal part of the value obtained by dividing the track length by the block length. Then, the tape information generation unit 102 calculates the file capacity using the calculated number of blocks X. The file capacity is given by an integer value obtained by rounding up the decimal places of the value obtained by dividing the number of blocks by X. The file capacity is represented by the number of tracks.

  If FILE # 1 in FIG. 7 is the target file, and the track length is 47476, for example, the track length (47476) / block length (20000) is approximately 2.37. The integer value 2 is obtained by rounding off the decimal part of 37. The file capacity is 500 since the number of blocks is (1000) / X (2).

(S106) The tape information generation unit 102 adds the file capacity calculated in S105 to the primary tape information 101b. When the process of S106 is completed, the process proceeds to S102.
(JCL generation)
Next, the flow of the JCL generation process executed by the information processing apparatus 100 will be described with reference to FIG. FIG. 11 is a flow diagram showing a flow of JCL generation processing according to the second embodiment.

  (S111) The JCL generation unit 103 reads one record that has not been read out yet from the records (information for each file) of the primary tape information 101b. For example, the record corresponding to FILE # 1 is volume serial number “URIAGE”, storage order “1”, file name “URIAGE.H14.SERVER”, program name “FCPY”, file capacity “500”, record format “F” Etc.

  (S112) The JCL generation unit 103 determines whether all the records of the primary tape information 101b have been read out (there is no record read out in S111). If all the records have been read out, the series of processing shown in FIG. 11 ends. On the other hand, if there is a record read in S111, the process proceeds to S113.

  (S113) The JCL generation unit 103 determines whether the program name of the record (target record) read in S111 matches the utility name described in the registered UTL information 101a. That is, the JCL generation unit 103 determines whether the processing program for processing the file of the target record is a system utility. If the processing program is a system utility, the processing proceeds to S114. On the other hand, if the processing program is not a system utility, the processing proceeds to S119.

  (S114) The JCL generation unit 103 determines whether the description of the JCL control statement based on the target record is the first description in the JCL file 101d. If it is the first description, the process proceeds to S115. On the other hand, if it is not the first description, the process proceeds to S117.

  (S115) The JCL generation unit 103 writes a JOB statement (the first line “\ JOB... In FIG. 9”) at the top of the JCL file 101d. For example, when the record corresponding to FILE # 1 in FIG. 7 is the target record, the JCL generation unit 103 extracts the volume serial number “URIAGE” and describes the JOB statement as in the first line of FIG.

(S116) The JCL generation unit 103 writes the JEND statement (the 16th line “¥ JEND” in FIG. 9) and the FIN statement (the 17th line “¥ FIN” in FIG. 9) in the JCL file 101d.
(S117) The JCL generation unit 103 writes a JCL control statement corresponding to the processing program in the JCL file 101d.

  When the processing program of the target record is a system utility, the JCL generation unit 103 performs JCL using the template of the JCL control statement prepared in advance for the system utility (see the second to eighth lines in FIG. 9). Add the description to file 101d.

  For example, when the record of FILE # 1 is a target record, the processing program of the program name "FCPY" corresponding to FILE # 1 is a system utility registered in the registered UTL information 101a. Therefore, the JCL generation unit 103 generates a JCL control statement in which the information of the target record is inserted in the template as shown in the second to eighth lines of FIG. 9, and adds the description to the JCL file 101d.

  If the processing program for the target record is not a system utility, the JCL generation unit 103 uses the prepared JCL control statement template (see lines 9 to 15 in FIG. 9) to describe in the JCL file 101d. Add.

  For example, when the record of FILE # 2 is a target record, the processing program of the program name "FCPY" corresponding to FILE # 2 is not a system utility registered in the registered UTL information 101a. However, since the record format is "F" (fixed length) (see S119), it can be treated as a sequentially organized file. Therefore, as shown in the ninth to fifteenth lines of FIG. 9, the JCL generation unit 103 generates a JCL control statement in which the information of the target record is inserted in the template, and adds the description to the JCL file 101d.

  (S118) The JCL generation unit 103 sets the generation target mark to OK (describes “OK” in the generation target column of the secondary tape information 101c). When the process of S118 is completed, the process proceeds to S111.

  (S119) The JCL generation unit 103 determines whether the record format described in the target record is "F" or "V". If the record format is "F" or if the record format is "V", the process proceeds to S114. On the other hand, if the record format is "U", the process proceeds to S120.

  (S120) The JCL generation unit 103 sets the generation target mark to NG (describes “NG” in the generation target column of the secondary tape information 101c). When the process of S120 is completed, the process proceeds to S111.

  That is, when the processing program of the target record is not a system utility and the record format is an indefinite length, there is a risk that the JCL control statement is not automatically generated correctly, so the automatic generation of the JCL control statement is skipped for the corresponding file. However, by leaving information of the file whose processing has been skipped in the secondary tape information 101c, it becomes easy for the user to check the corresponding file later and describe the JCL file manually.

The process flow has been described above.
[2-5. Volume label information, file label 1, file label 2]
Here, the format of the volume label information that can be acquired from the tape medium 210, the file label 1, and the file label 2 will be described with reference to FIGS. FIG. 12 is a diagram showing the format of volume label information. FIG. 13 is a diagram showing the format of the file label 1. FIG. 14 is a diagram showing the format of the file label 2.

(Volume label information)
As shown in FIG. 12, the volume label information has items of volume label, volume serial number, recording method, and user identification code in order from the top. Between the volume serial number and the recording method, an unused area of 1 byte in which “0” is stored and an unused area of 24 bytes set to blank are provided. Further, a 4-byte unused area set as a space is provided between the recording method and the user identification code, and a 29-byte unused area is provided after the user identification code.

  The volume label is information indicating a standard label of the magnetic tape. The volume serial number is a volume serial number of the tape medium (corresponding tape) corresponding to the volume label information. The recording method is information indicating a compression format or non-compression format for indicating whether the file is a tape medium in which the file is compressed and stored. The user identification code is arbitrary user information such as an owner name.

(File label 1)
As shown in FIG. 13, the file label 1 includes, in order from the top, a label identifier, a file name, a file serial number, a volume sequence number, a file logical sequence number, a generation number, a version number, a creation date, an expiration date, a block count, And an item of system code. Between the expiration date and the block count, a 1-byte unused area in which “0” is stored is provided. In addition, a 7-byte unused area set to blank is provided after the system code.

  4 as EOL1 which indicates the end of the volume when the file label 1 is written at the beginning of the file as the label identifier and 4 characters of HDR1 are stored and the file continues to the next volume Character is stored. When the file label 1 is written at the end of the file, four characters of the label EOF1 indicating the end are stored at the end of the file as a label identification name.

  The file name is 17 bytes of the file name specified in the job control statement at the time of file creation. The file serial number is a volume serial number of a volume including the file (corresponding file) corresponding to the file label 1. The volume order number is a number indicating the order from the top volume of the volume including the corresponding file. The file logical order number is a number indicating the relative position of the file.

  If the file is a generation file, the generation number is stored as the generation number and the version number. A generation file is a file whose generation is managed. If the file is not a generation file, the items of generation number and version number will be blank. The creation date is the creation date when the corresponding file was created.

  The expiration date is the file storage deadline of the corresponding file. If the expiration date is not specified at the time of writing, b00000 (b: blank) is stored. The block count is the number of blocks. The system code is a code that identifies the system that created the file label 1.

(File label 2)
As shown in FIG. 14, the file label 2 includes, in order from the top, a label identification name, a record format, a block length, a logical record length, a recording density, a file position, a job name / program name, a recording method, control character display, It has items of block attribute and user information. Between the control character display and the block attribute, a 1-byte unused area in which "0" is stored is provided. In addition, an unused area of 13 bytes set as a space is provided between the block attribute and the user information.

  When the file label 2 is written following the HDR 1 of the file label 1, four characters of the HDR 2 are stored as the label identification name. When the file label 2 follows the EOV1 of the file label 2, four characters of the EOV2 are stored, and when following the EOF1 of the file label 1, four characters of the EOF2 are stored.

  As the record format, F is stored in the case of fixed length, V in the case of variable length, and U in the case of indefinite length. The block length is the block length of the file. The logical record length is the logical record length of the file. In the item of recording density, a code indicating the recording density on the tape medium is stored. The file position item stores a number (0: generated, 1: not generated) indicating whether switching of the tape volume has occurred at the time of file creation.

  The job name / program name is the job name and program name at the time of file creation. The item of the recording method stores information indicating a compression format or a non-compression format. The item of control character display stores information indicating whether the in-file record includes a control character. The block attribute item stores information indicating how the in-file record is blocked (blocking method). In the item of user information, arbitrary user information is stored.

In the above, the format of the volume label information that can be acquired from the tape medium 210, the file label 1, and the file label 2 has been described.
The second embodiment has been described above.

DESCRIPTION OF SYMBOLS 10 information processing apparatus 11 memory | storage part 11a registration information 12 calculating part 20 tape apparatus 20a tape medium 30 label information 40a, 40b control program

Claims (6)

A program that causes a computer to execute a process of generating a control program used for data migration of files recorded on a tape medium.
On the computer
Acquiring information of a first processing program used when writing a file to the tape medium from the storage unit;
Acquiring information of a second processing program used when writing a migration target file to the tape medium from the tape medium;
Based on the acquired information, when the second processing program and the first processing program match, the processing of writing the migration target file to the migration destination using the first processing program is executed. A program that causes a job control language control program to be generated. The program according to claim 1, wherein the program causes the computer to execute processing of acquiring information of the second processing program from label information stored in the tape medium in the acquisition processing. The label information includes the record format of the migration target file,
The computer is
When the record format is a fixed length or a variable length, a control program of a job control language is generated to execute a process of writing the file to be migrated to the migration destination using the second processing program. Described program. The program according to claim 3, wherein, when the record format is an indefinite length, the computer avoids the process of generating a control program of the job control language for the file to be migrated. An information processing apparatus for generating a control program used for data transfer of a file recorded on a tape medium, comprising:
A storage unit for storing information of a first processing program used when writing a file to a tape medium;
Information on a second processing program used when writing a file to be migrated to the tape medium is acquired from the tape medium, and the second processing program and the first process are acquired based on the acquired information. An operation unit that generates a control program of a job control language that executes a process of writing the file to be transferred to the transfer destination using the first processing program when the programs match. . A computer generates a control program used for data migration of files recorded on a tape medium,
Acquiring information of a first processing program used when writing a file to the tape medium from the storage unit;
Acquiring information of a second processing program used when writing a migration target file to the tape medium from the tape medium;
Based on the acquired information, when the second processing program and the first processing program match, the processing of writing the migration target file to the migration destination using the first processing program is executed. A control program of job control language to be generated. An automatic generation method of job control language.

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