JPH08292905A - File data management device - Google Patents

Abstract

PURPOSE: To input and output data fast by determining write data size which is proportional to the data input/output speed of a write destination data area and writing the data. CONSTITUTION: At a new data write request from a user program, data areas where no data are written on hard disks 1-3 are investigated by referring to data area information management tables 4-6. Then, a data area management part 8 manages the use states of the data areas on the hard disks 1-3 by using the data area information management tables 4-6 to determine a write data area. A data size management part 9 determines write data size so that all data areas become equal in data input/output time by using a data input/output speed information management table 7. A data transfer part 10 writes the data to the three areas determined by the data area management part 8 to the size determined by the data size management part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file system in an electronic computer for dividing and writing file data in a plurality of external storage devices for the purpose of high speed input / output of a large capacity file in the external storage device.

[0002]

2. Description of the Related Art As one type of file system in an electronic computer, by dividing file data recognized by a user program into a size that is an integral multiple of one block used for general file input / output, high-speed file processing is possible. A file system that enables input / output has been proposed.

In such a system, as a method of configuring an external storage device for outputting file data, there is a method of using a plurality of external storage devices other than the method of using one external storage device.

By the way, in such a system using a plurality of external storage devices, when the characteristics of the individual external storage devices are different, the file division size and the write data are considered in consideration of the characteristics of the individual external storage devices. There is a way to determine the area. As a document describing such a technique, there is, for example, JP-A-5-197599.

This conventional file data management device is shown in FIG.
It is configured as shown in FIG. L0 to L5 are file data recognized by the user program. P0 to P5 are external storage devices, P0 and P1 are magnetic disk devices, and P2.
And P3 are ultra-high speed disk devices, and P4 and P5 are extended storage devices.

When the user program requests to write the data of L0 to L5 to the external storage devices P0 to P5,
Data of one block size such as L0, L2 and L3 is written in the expanded storage devices P4 and P5 by securing one block, and data of 2 to 8 blocks such as L1 and L5 is written to the magnetic disk devices P2 and P3 by 8 blocks. The data is reserved and written, and the data of 9 to 32 blocks such as L4 is reserved and written in the ultra-high speed disk devices P2 and P3.

According to this method, the external storage device to be written is determined according to the size of the data to be written, the large size data is written to the high speed external storage device, and the small size data is written to the low speed storage device. This is intended to improve the output efficiency.

[0008]

However, the write data size for each external storage device is determined only in accordance with the characteristics of the external storage device to be used,
The defined write data size is unique to each external storage device. Therefore, if the characteristics of the data area are uniform on the external storage device, there will be no problem, but if the characteristics of the data area change even in the external storage device, consider the characteristics of the individual data areas. Without it, high speed input / output cannot be performed.

For example, when there are data areas having different data input / output speeds in the external storage device, if the write data size is constant, the data input / output time varies depending on the input / output data area. Therefore, when data is input / output to / from the data areas of multiple external storage devices at the same time, the external storage device that has completed the input / output of data waits until the input / output of data to the other external storage device is completed. It is necessary, and the data input / output speed of the entire system is reduced.

Further, when the file is divided and written in the data areas having different data input / output speeds, the data input / output speeds change. The present invention is a file that can perform high-speed data input / output even if the external storage device to be used has data areas having different input / output speeds and that can satisfy the data input / output speed required by the user program. An object is to provide a data management device.

[0011]

According to another aspect of the present invention, there is provided a file data management apparatus which divides file data recognized by a user program into a plurality of external storage devices and records the divided file data at high speed to input / output a large amount of file data. In a file system in an electronic computer, a data area information management table that manages information about a data area in which file data is written in the external storage device, and a data input / output speed that holds information about the input / output speed of data with respect to the data area An information management table, a data area management unit that uses the data area information management table to manage the usage status of the data area in the external storage device and determines a write data area, and the data input / output speed information management table. A data size manager that determines the write data size using Wherein the data area management unit and a data transfer unit to the external storage device from the user program to write the file data according to the write data area and the write data size data size management unit decides determined.

According to a second aspect of the present invention, there is provided a file data management apparatus in which a file data recognized by a user program is divided into a plurality of external storage devices and recorded, and a large-capacity file data is input / output at high speed. A data area information management table for managing information on a data area in which file data is written in the external storage device, a data input / output speed information management table for holding information on the input / output speed of data to / from the data area, A constant speed input / output information table that holds information about a combination of data areas in which data can be input / output at a constant speed for file data, the data area information management table, the data input / output speed information management table, and the constant speed. Write using I / O information table A data area management unit that determines a combination of data areas, a data size management unit that determines a write data size using the data input / output speed information management table, a write data area determined by the data area management unit, and And a data transfer unit for writing file data from the user program to the external storage device according to the write data size determined by the data size management unit.

A file data management apparatus according to a third aspect of the present invention is a file system in an electronic computer which divides file data recognized by a user program into a plurality of external storage devices and records them to input / output a large amount of file data at high speed. A data area information management table for managing information on a data area in which file data is written in the external storage device, a data input / output speed information management table for holding information on the input / output speed of data to / from the data area, Using the required input / output speed information table that holds information about the data input / output speed required for file data, the data area information management table, the data input / output speed information management table, and the required input / output speed information table, Manage the usage status of the data area of the external storage device A data area management unit that determines the combination of the embedded data areas, a data size management unit that determines the write data size using the data input / output speed information management table, and a write data area that is determined by the data area management unit And a data transfer unit for writing file data from the user program to the external storage device according to the write data size determined by the data size management unit.

[0014]

According to the structure of claim 1, when a new data write request is issued from the user program, the data area management unit determines the write data area, and the data size management unit always sets a constant time for all data areas. The write data size is determined so that it can be input / output. The data transfer unit writes data to the external storage device according to the data area determined by the data area management unit and the data size determined by the data size management unit.

According to the second aspect of the present invention, when a new data write request is issued from the user program, the data area management unit determines a combination of write data areas in which data of all file data can be input / output at a constant speed. The data size management unit determines the size write data size that can be input / output to / from all data areas at a constant time. The data transfer unit writes data to the external storage device according to the data area determined by the data area management unit and the data size determined by the data size management unit.

According to the third aspect of the present invention, when a new data write request is issued from the user program, the write data area is set so that the data area management unit can input / output data at the input / output speed required for each file data. Then, the data size management unit determines the write data size so that input / output can be performed for all data areas at a constant time. The data transfer unit writes data to the external storage device according to the data area determined by the data area management unit and the data size determined by the input / output data size management unit.

[0017]

Embodiments of the present invention will be described below with reference to FIGS. (Embodiment 1) The file data management apparatus of the present invention is constructed as shown in FIGS.

Reference numerals 1, 2 and 3 are hard disks in which file data are stored, and 4 is a data area information management table for managing information on the data area of the hard disk 1. Reference numeral 5 is a data area information management table for managing information on the data area of the hard disk 2. A data area information management table 6 manages information about the data area of the hard disk 3.

Reference numeral 7 is a data input / output speed information management table that holds information on the input / output speed of data with respect to the data areas of the hard disks 1-3. A data area management unit 8 manages the usage status of the data areas of the hard disks 1 to 3 by using the data area information management tables 4 to 6 and determines the write data area.

A data size management unit 9 determines the write data size for the write data area determined by the data area management unit 8. 10 is a data area management unit 8
Is a data transfer unit that writes file data from the user program 11 to the hard disks 1 to 3 in accordance with the write data area determined by and the write data size determined by the data size management unit 9.

File name FI from user program 11
The operation when a new file data LE1 is requested will be described with reference to FIG. Data areas P11 to P13, P21 are stored in the hard disks 1 to 3.
To P23 and P31 to P33 exist, and the data input / output speed is uniform in each data area. The data input / output speed in each data area is shown in parentheses. The shaded data areas P21, P22, P31 are data areas in which other file data has already been written.

The data area management unit 8 determines the write data area in the following procedure. A data area in which data is not written in the hard disks 1 to 3 is examined with reference to the data area information management tables 4 to 6.

In the hard disk 1, a data area P11,
Since a free data area exists in the data area P23 of the hard disk 2 and the data area P32 of the hard disk 3, these data areas are determined as the write data area.

The data size management unit 9 uses the data input / output speed information management table 7 to determine the write data size so that the data input / output times for all data areas are equal.

That is, the data areas P11, P23, P
Data input / output speed of 32 is 5MB / s and 3MB respectively
/ S, 4 MB / s, the data areas P11, P2
3, write data size for P32 is 5
Decide into blocks, 3 blocks and 4 blocks.

The data transfer unit 10 includes a data area management unit 8
In the three data areas determined by, the data size management unit 8
Write at the same size determined by. By this writing, the data numbered 1 to 3 of the file FILE1 in FIG. 2 are simultaneously written to the data areas numbered 1 to 3 of the hard disks 1 to 3, respectively.

Thereafter, similarly, until all the file data is written to the hard disk, the data area is determined,
Operations such as data size determination and data writing are repeated.

At the time when all the writing is completed, the file data of the file FILE1 is divided into six data 1 to 6 and written in the shaded portion of the data area of the hard disk as shown in FIG.

As described above, when the file data for which a new write request is made is divided and recorded on a plurality of hard disks, the write data size is determined to be a size proportional to the data input / output speed of the write destination data area. By performing the writing, it becomes possible to input / output all data areas at the same time, and it is possible to perform high-speed data input / output.

(Embodiment 2) FIGS. 3 to 5 show a second embodiment. Components having the same operation as in FIG. 1 will be described with the same reference numerals.

In the second embodiment shown in FIG. 3, a constant speed input / output information table 12 is added to the configuration of the first embodiment shown in FIG. Has been changed.

The constant speed input / output information table 12 is a table for holding information about combinations of data areas which allows input / output of file data at a constant speed for all file data. Specifically, FIG. As shown.

File name FI from user program 11
The operation in the case of being requested to newly write the file data of LE2 will be described based on FIG. Data areas P11 to P13, P2 are stored in the hard disks 1 to 3.
1 to P23 and P31 to P33 exist, and the data input / output speed is uniform in each data area. The data input / output speed in each data area is shown in parentheses.

The data area management unit 8 determines the write data area in the following procedure. The data area management unit 8 uses the constant speed input / output information table 12 shown in FIG. 4 to investigate a data area in which all file data can be input / output at a constant input / output speed. Combination of P11, P22 and P33, Combination of P21, P32 and P13, P3
Since data input / output at 12 MB / s can be realized with the combination of 1, P12, and P23, P11, P22, and P3
Select the combination of 3.

The data size management unit 9 uses the data input / output speed information management table 7 to determine the write data size so that the data input / output times for all data areas are equal.

That is, the data areas P11, P22, P
Data input / output speed of 33 is 5MB / s and 4MB respectively
/ S and 3 MB / s, the write data size is determined to be 5 blocks, 4 blocks, and 3 blocks, respectively.

The data transfer unit 10 includes a data area management unit 8
Data size management unit 9 in the three data areas determined by
Data is written simultaneously with the size determined by. By this writing, 1 to 1 of the file name FILE2 in FIG.
The data numbered 3 is 1 to 1 of hard disks 1 to 3.
The data areas numbered 3 are written simultaneously. The data input / output speed at this time is 12 MB / s.

Similarly, until all the file data is written in the hard disk, the data area is determined,
Operations such as data size determination and data writing are repeated.

At the time of writing after the next time, P21 and P
32 and P13 data area combination, P31 and P
Although the combination of the data areas of 12 and P23 is also used sequentially, the data input / output speed is always 12 MB / s no matter which combination is used.

When all the writing is completed, the file data of the file name FILE2 is divided into 18 pieces of data of 1 to 18 and is written in the portion of the data area of the hard disk with halftone dots as shown in FIG. Be done.

As described above, when the file data for which a new write request is made is divided and recorded in a plurality of hard disks, the write data size is determined to be a size proportional to the data input / output speed of the write destination data area. By writing data, I / O operations for all data areas can be performed in the same time, high-speed data I / O can be performed, and all file data I / O can be performed at a constant speed. Therefore, the worst value of the data input / output speed is improved.

(Third Embodiment) FIGS. 6 to 8 show a third embodiment. Components having the same operation as in FIG. 1 will be described with the same reference numerals.

In the third embodiment shown in FIG. 6, a necessary input / output speed information table 13 is added to the configuration of the first embodiment shown in FIG. Has been changed.

The required input / output speed information table 13 is a table for holding information on the data input / output speed required for file data, and is specifically as shown in FIG.

File name FI from user program 11
The operation when a new file data called LE3 is requested to be written will be described with reference to FIG. This FILE3 is user program 11 to 13M
It is required to input / output data at a data input / output speed of B / s.

A data area P1 is stored in the hard disks 1 to 3.
1 to P13, P21 to P23, P31 to P33 exist, and the data input / output speed is uniform in each data area. The data input / output speed in each data area is shown in parentheses.

The data area management unit 8 determines the write data area in the following procedure. The data area management unit 8 uses the required input / output speed information table 13 shown in FIG. 7 to investigate a combination of data areas that enables input / output of file data at the input / output speed required for the file name FILE3. 13M by combining P11, P21 and P33
Since data input / output at B / s can be realized, this combination is selected.

The data size management unit 9 uses the data input / output speed information management table to determine the write data size so that the data input / output times for all data areas are equal. That is, the data areas P11, P
21 and P33 data input / output speed is 5MB /
Since they are s, 5 MB / s, and 3 MB / s, the write data size is determined to be 5 blocks, 5 blocks, and 3 blocks, respectively. As a result, the total system is 13MB /
Data can be written at an input / output speed of s.

The data transfer unit 10 simultaneously writes data in the three data areas determined by the data area management unit 8 in the size determined by the data size management unit 9. By this writing, 1 to 2 of the file name FILE2 in FIG.
The data numbered 3 is 1 to 1 of hard disks 1 to 3.
The data areas numbered 3 are written simultaneously. The data input / output speed at this time is 13 MB / s.

Similarly, until all the file data is written to the hard disk, the data area is determined,
Operations such as data size determination and data writing are repeated, but the data input / output speed is always 13 MB / s.
Becomes

When all the writing is completed, the file data of the file name FILE3 is divided into 9 pieces of data of 1 to 9 and is written in the half-dotted part of the data area of the hard disk as shown in FIG. Be done.

As described above, when the file data for which a new write request is made is divided and recorded in a plurality of hard disks, the write data size is determined to be a size proportional to the data input / output speed of the write destination data area. By writing the data, it is possible to perform input / output operations for all hard disks in the same time, which enables high-speed data input / output and always satisfies the data input / output speed required by the user program. Data can be input / output at the input / output speed.

Although the number of hard disks is three in each of the above embodiments, it goes without saying that the number of hard disks may be four or more.

[0054]

According to the first aspect of the invention, the file data recognized by the user program is divided and recorded in a plurality of external storage devices, so that a large amount of file data can be input and output at high speed. In the file system in the enabled computer, when writing new file data from the user program, the write data size is determined so that the data can be written in all the data areas at a constant time. Is written, it is possible to input / output data at high speed, and the practical effect thereof is great.

According to the second aspect of the invention, the file data recognized by the user program is divided and recorded in a plurality of external storage devices, so that a large amount of file data can be input / output at high speed. In the file system of the computer, the data input / output can be performed at a constant input / output speed for all file data, so the worst value of the data input / output speed can be improved and its practical effect is large.

According to the third aspect of the invention, the file data recognized by the user program is divided and recorded in a plurality of external storage devices, so that a large amount of file data can be input / output at high speed. In the file system of the electronic computer described above, data can be input / output at the input / output speed required for individual file data, so that its practical effect is great.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of a file data management device of the present invention.

FIG. 2 is a relationship diagram showing a correspondence between file data recognized by a user program of the embodiment and data on a data area of a hard disk.

FIG. 3 is a configuration diagram of a second embodiment.

FIG. 4 is a view showing the contents of a constant speed input / output information table of the embodiment.

FIG. 5 is a relationship diagram showing the correspondence between the file data recognized by the user program of the embodiment and the data area of the hard disk.

FIG. 6 is a configuration diagram of a third embodiment.

FIG. 7 is a content diagram of a necessary input / output speed information table according to the same embodiment.

FIG. 8 is a relationship diagram showing the correspondence between the file data recognized by the user program of the embodiment and the data area of the hard disk.

FIG. 9 is an explanatory diagram of a conventional file data management device.

[Explanation of symbols]

 1 hard disk 2 hard disk 3 hard disk 4 data area information management table 5 data area information management table 6 data area information management table 7 data input / output speed information management table 8 data area management unit 9 data size management unit 10 data transfer unit 11 user program 12 Constant speed input / output information table 13 Required input / output speed information table

Continuation of the front page (72) Inventor Toshihiro Imaura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Soft Research Co., Ltd.

Claims (4)

[Claims] 1. A file system in an electronic computer, wherein file data recognized by a user program is divided and recorded in a plurality of external storage devices to input and output a large amount of file data at high speed. Using a data area information management table for managing information on a data area in which data is written, a data input / output speed information management table for holding information on data input / output speed for the data area, and the data area information management table A data area management unit that manages a usage status of a data area in the external storage device and determines a write data area; a data size management unit that determines a write data size using the data input / output speed information management table; The write data area determined by the data area management unit and the A file data management apparatus comprising: a data transfer section that writes file data from a user program to an external storage device according to a write data size determined by a data size management section. 2. A file system in an electronic computer, wherein file data recognized by a user program is divided and recorded in a plurality of external storage devices to input and output a large amount of file data at high speed. A data area information management table that manages information about a data area in which data is written, a data input / output speed information management table that holds information about the input / output speed of data with respect to the data area, and the data at a constant speed for the file data. Writing using the constant speed input / output information table that holds information about the combination of data areas that can be input / output, the data area information management table, the data input / output speed information management table, and the constant speed input / output information table Data area that determines the combination of data areas Area management unit, a data size management unit that determines the write data size using the data input / output speed information management table, a write data area determined by the data area management unit, and a write determined by the data size management unit A file data management device comprising a data transfer unit for writing file data from a user program to an external storage device according to a data size. 3. A file system in an electronic computer, wherein file data recognized by a user program is divided and recorded in a plurality of external storage devices to input and output a large amount of file data at high speed. Data area information management table for managing information on a data area in which data is written, a data input / output speed information management table for holding information on data input / output speed for the data area, and data input / output required for the file data Usage status of the data area of the external storage device by using a necessary input / output speed information table that holds information about speed, the data area information management table, the data input / output speed information management table, and the necessary input / output speed information table To determine the combination of write data areas A data area management unit, a data size management unit that determines the write data size using the data input / output speed information management table, a write data area determined by the data area management unit, and the data size management unit A file data management device comprising a data transfer unit for writing file data from a user program to an external storage device according to a write data size. 4. The file data management device according to claim 1, wherein the external storage device is a hard disk.