JPS62118452A - File controller - Google Patents

Abstract

PURPOSE:To lighten the load on a data processing device and enhance efficiency of the system by outputting controlling command to retrieving, control of stored information and file processing device in place of a data processing device in a file controlling device. CONSTITUTION:When commands are received from data processing devices 21, 22, a processing controlling device 13 interprets the commands, and retrieves the state of using and state of storage of the file and registers in a file controlling section 12. In the case where stored information that conformes to constitutional information after verification, the controlling device generates controlling command basing on stored information obtained from the file controlling section 12 and processing attribute of command, and sends out the controlling command to file processing devices 31, 32. File processing devices 31, 32 that received controlling command from a file controlling device 10 sends out the command to file driving devices 41, 42.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a file management device in a data processing system.

[Conventional technology]

2. Description of the Related Art Conventionally, a configuration as shown in FIG. 7, for example, is known as a data processing system that performs file control.

In FIG. 7, 2 and 2 are data processing devices, which are loosely coupled to form a multiprocessor system. Each data processing device 1.2 has a file processing device 3.
, 4 are connected to each other, and a file drive device 5.6 is connected to each of the file processing devices 3.4. In addition, each file drive device W5, 6 includes a data processing device 1.2.
A volume medium 7.8 is implemented which contains a plurality of files 71, 72, which are a group of data to be processed.

In the above configuration, for example, when the data processing device 1 refers to the file 71, in order to read the file 71, the storage information of the file 71 is searched inside the data processing device 1, and for example, the file processing device 3 and the file 71 are searched for. After obtaining the device address of the drive device 5 and the storage address of the file 71 in the volume medium 7, for example, as shown in FIG.
In this case, a command containing the device address of the file drive device η5 and the storage address of the file 71 among the storage information (in this case, the reference 11Q command) is generated, and this command is given to the file processing device 3. Upon receiving this command, the file processing bag W3 occupies the file drive device 5 and volume medium 7 designated by the command, reads the file 71 from within the volume medium 7 via the file drive device 5, and transfers it to the data processing device. Transfer to.

[Problem that the invention seeks to solve]

As described above, in conventional data processing systems, when reading or writing a file, it is necessary for the data processing device itself to search for and manage information stored in the file. For this reason, as the number of files processed by the data processing device increases with the growth of the database, the control table required for file management will expand, the processing time for file search will increase, and so on. There were problems such as increased load and decreased processing performance.

The present invention has solved these conventional problems, and its purpose is to provide a file management device that can manage files and search information stored in files independently of the data processing bag. , thereby reducing the load on a data processing device and making it possible to construct an efficient file control system.

[Failure to solve the problem]

The file management device of the present invention comprises: a first input/output unit connected to a data processing bag W to perform input/output to/from the data processing device; and a file processing device to exchange file information with the data processing device. a second input/output means connected to the file processing device to perform input/output with the file processing device; a storage means for recording storage information corresponding to each file; and a storage means for managing the storage information stored in the storage means. and a control means for decoding commands inputted from the data processing device via the first input/output means and sending control commands to the file processing device.

[Effect]

When a command including file identification information and processing attributes is given from the data processing device, the control means retrieves stored information corresponding to the file identification information from the storage means, and controls the file processing device based on this and the processing attributes. Generates commands and controls the file processing device. In the case of file update or reference, the file processing device exchanges file information with the data processing device based on the control commands.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram of an embodiment of a data processing system including the file management device 10 of the present invention.

In this embodiment, two data processing devices 21゜2
2 are configured as a loosely coupled multiprocessor system. The file management devices 10 are connected to data processing devices 21 and 22, respectively, and are connected to data processing devices 21 and 22.
The structure is such that commands and control data can be transferred between the two. The file management device W10 is also connected to a plurality of file processing devices 3L 32, and the file management device 10 sends control commands to the file processing bags 231.32 based on commands from the data processing devices 21.22. Each file processing bag w31.32 is also connected to the -1 series of data processing devices 21.22, and is configured to be able to transfer command and control data as well as file information. In addition, each file processing device 31, 32 has a plurality of file drive devices ff141.
．． 42 are connected. In FIG. 2, two file processing devices 31, 32 and two file driving devices 41.
42 are connected, but depending on the scale of the data processing system, there may be only one file processing device and one file driving device, or it is also possible to connect more devices. Note that the file drive devices 41 and 42 can have the same configuration as the file drive device 5.6 in FIG. 7. The file processing devices 31 and 32 also include a file management unit ff1 in the file processing devices W3 and 4 shown in FIG.
It has a structure in which information input/output means etc. with O are added.

In addition, in FIG. 2, each file drive device 41, 4
2, files 511, 512, 521 which are a group of data processed in data processing bag Lf21.22;
A volume medium 51,52 containing several volumes is implemented.

” - In the configuration as described above, the data processing bag N 21
.

22 generates, deletes, references 1, or updates files 511, 512, and 521. In this case, in this system, the file management device 10, which is not found in conventional systems, has a function such as searching for information stored in the file 5]2,521, which was performed in the data processing device 21.22. Therefore, the data processing devices 21 and 22 generate and delete files 512 and 521 by including file identification information such as the name and serial number of the file to be processed in the command and sending it to the file management device 10.

Reference or update processing is possible. Note that the file information transfer itself is directly performed via a path connecting the data processing device r2i, 22 and the file processing device 3], 32.

Next, an embodiment of the file management device 10 will be described.

FIG. 1 is a block diagram of an embodiment of the file management device 10, in which 11 is an input/output control unit connected to data processing devices 21 and 22 and performs input/output with these devices, and 12 is a storage corresponding to each file. File management unit that stores information, 1
3 is management of stored information stored in the file management unit 12;
The file processing device decodes the commands manually input from the data processing devices 21 and 22 via the human output control section 11, extracts the stored information regarding the file from the file management section 12 based on the file identification information contained therein, and extracts the stored information from the file management section 12. 31. A processing control unit that performs processing to generate a control command for 32, etc.
14 is the file management device 10 or II data processing 111i
Configuration information record 40 copies, 15 that stores configuration information about what kind of file processing device is connected to the device ff21.22 and what kind of file drive device with what volume medium is connected to the file processing device. is a control drive section which is connected to the file processing devices 31 and 32 and inputs and outputs commands, control data, etc. to and from these devices.

FIG. 3 is a diagram showing an example of the contents of the file management section 12,
This shows a state in which file usage status 121 and storage information 122 are stored in correspondence with file identification information r4120. Note that the information in the file management section 12 is generated by the processing control section 13 based on the information in the configuration information storage section 14 when the file is generated. In addition, this information is also created on the volume medium as a special file 511 for the operation of the data processing system, and is directly sent via the control drive unit 15 under the control of the processing control unit 13 at the time of initial startup of the file management device 10. The data is read out and re-stored in the file management unit 12.

FIG. 4 is an explanatory diagram of an example of the contents of stored information stored in the file management unit 12, including the device addresses of the file processing device and file drive device on the path to access the file, and the device address of the file processing device and file drive device on the path for accessing the file, and It also includes the storage address of the file.

Now, in FIG. 1, commands from the data processing bag W2L 22 are received by the input/output control section 1. For example, as shown in Figure 5, this command includes a number, a processing attribute indicating whether the file processing is creation, deletion, reference, or update, file identification information such as a file name and serial number, and as necessary. It also includes the identification code of the data processing device that issued the command.

When the input/output control section 11 receives the above command, the processing control section 13 executes the processing shown in FIG. 6, for example.

First, the processing control unit 13 decodes the received command (Sl), and if the processing attribute of the command indicates creation, reference, update, or deletion, it receives the file identification included in the command from the file management unit 12. The file usage status and storage information corresponding to the information are searched (S2). If the command is a generation command and the storage information corresponding to the giant file identification information is acquired, or if it is another type of command and the storage information is not acquired, an abnormality is reported as an abnormality (NG). ) is performed (S'3 to S6).

On the other hand, if the command is a generation command and is normal, the processing control unit 13
allocates an area to the file of the file identification information included in the command based on the contents of the configuration information storage unit 14.

This is done by registering predetermined storage information in the file management unit 12 corresponding to the file identification information (S
7). Thereafter, the process advances to step 317.

Also, if the command is a reference, update, or delete command and is normal, check the usage status obtained from the file management unit 12 (S8).
, if it is unusable, issue an abnormality report (NG) 39-3
11), see if available.

If it is an update command, the process goes to step 313, and if it is a deletion command, the process goes to step S12 to step 313. Step S12 is a process of erasing the stored contents of the file management unit 12 regarding the file identification information included in the command.

Step S13 is a process of verifying whether or not the stored information read from the file management unit 12 matches the configuration information stored in the configuration information storage unit 14. If not obtained, an abnormality report (NG) is issued (814-516).

If the storage information that matches the configuration (U) is obtained through the above verification, the storage information obtained from the file management unit 12 (the device of the file processing device and file drive device corresponding to the file with the specified file identification information) A1
A command (control command) similar to that shown in FIG. and sends it to the file processing device specified by the storage information, for example, the file processing device 31 (
317).

The file processing device 1.31 that has received the control command from the file management device 10 sends an instruction to, for example, the file driving unit W41 based on the control command. For example, if the control command is a request to reference file 512, a read instruction for file 512 is sent. The file drive device 41 reads the file information of the file 512 existing in the volume medium 51 according to this read instruction, and the file processing device 3
1, the file processing device 31 receives this and transfers it to the data processing device 21 designated by the above-mentioned control command.

Further, if the control command given from the file management unit ff1O is, for example, a request to update the file 512, the file processing device 31 transfers the update information regarding the file to the data processing device 21 specified by the control command. Along with the request, the file drive device old file 512
Sends a write instruction.

When the update information of the file 512 is transferred from the data processing device 21 via the file processing device 21, the file drive device 41 updates the file information of the file 512 existing in the volume medium 51 according to the above-mentioned write instruction. In the case of creation and deletion, the file processing device 31 that receives the control command writes control data necessary for creation and deletion into the volume medium 51.

〔Effect of the invention〕

As described above, the present invention is directed to searching for stored information regarding files in a file management device.

By performing management and outputting control commands to the file processing device instead of the data processing device, the load on the data processing device is reduced accordingly, and an efficient file control system can be constructed. Further, the file drive device can have the same configuration as the conventional one, which has the advantage that existing systems can be used effectively.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of a file management device of the present invention, FIG. 2 is a block diagram of an embodiment of a data processing system to which the present invention is applied, and FIG. 3 is an explanatory diagram of an example of the contents of the file management unit 12. , FIG. 4 is an explanatory diagram of an example of the contents of stored information stored in the file management unit 12, FIG. 5 is an explanatory diagram of an example of the contents of a command issued from the data processing device to the file management device, and FIG. 6 is an explanatory diagram of an example of the contents of the command issued from the data processing device to the file management device. FIG. 7 is a flowchart showing an example of the processing of the part 13; FIG. 7 is a process diagram of a conventional data processing system; FIG. 8 is a diagram explaining the contents of commands issued from a data processing device to a file processing device in a conventional data processing system It is. IO is a file management device, 11 is an input/output control section, 12 is a file management section, 13 is a processing control section, 14 is a configuration information storage section, 15 is a control drive section, 21.22 is a data processing device, 31.32 is a File processing device, 41.42 is a file drive device, 51.52 is a volume medium, 511,5
12.521 is a file.

Claims (1)

[Claims] First input/output means connected to a data processing device and performing input/output with the data processing device; and a first input/output means connected to the data processing device and performing input/output with the data processing device; a second input/output means for inputting/outputting data to/from the file processing device; a storage means for storing stored information corresponding to each file; and a second input/output means for managing the stored information stored in the storage means, A file management device comprising: control means for decoding commands input from a processing device through the first input/output means and sending control commands to the file processing device.