JP3390317B2 - File exclusive control unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file exclusion controller in a file sharing type computer system in which a plurality of hosts share files, and in particular, a production operating system (hereinafter referred to as "OS") independent of each other in one host. ") And a file exclusive control device capable of cooperating with the evaluation OS.

[0002]

2. Description of the Related Art In a conventional file exclusion control device of this type, for example, Japanese Patent Application Laid-Open No. 59-59359 discloses a file sharing control system for speeding up file exclusion control.
-77563, or JP-A-61-1945.
As disclosed in Japanese Patent Publication No. 46, etc., a file exclusive control device is connected to a plurality of data processing devices, and one control table is provided in the file exclusive control device. Exclusive control was performed in block units.

In Japanese Patent Laid-Open No. 59-77563, a file control processing device for performing exclusive control in block units of a file is composed of a plurality of control processors to improve the processing efficiency. Japanese Patent Application Laid-Open No. 61-194546 discloses a control table for classifying file blocks based on file names (characterizing the file names, A verification table that defines the byte positions and bit positions that are effective in evenly distributing the load, and a dedicated information storage unit that verifies the file name of the reception command by referring to the verification table and based on the grouped information It consists of a classification table that you select and define)
There is proposed a configuration of a shared file control system capable of efficiently performing exclusive control of a shared file in a data processing system by providing a file management device having the above.

[0004]

The conventional file exclusive control device described above has the following problems.

The first problem is that in the prior art, during normal business operation operation, that is, while the production OS is operating, the evaluation OS is added to the evaluation OS in order to evaluate the software revision up and investigate the software failure. Is started, there is a possibility that the file number is physically different between the production OS and the evaluation OS, but is logically the same. In this case, a malfunction occurs in the exclusive control processing. That's what it means.

The second problem is a production OS and an evaluation OS.
This means that one of the OSs may occupy the resource of the file exclusion control device depending on the load ratio of the above, and the processing speed of the other OS may be affected.

The reasons for the first and second problems are that when the evaluation OS is started up, there is no file shared between the production OS and the evaluation OS so that the production OS is not affected. Despite that, there is only one control table for performing exclusive control.

The third problem is that, in the conventional file exclusion control processing device, the command is from the production OS,
This means that it is not possible to recognize whether the command came from the evaluation OS.

The reason for this is that in the conventional file exclusion control processing device, command issuance is distinguished based on the host ID (identifier) and task ID, but these identifiers are the same in the production OS and the evaluation OS. Because there is a possibility that

Therefore, the present invention has been made in view of the above problems, and its object is to eliminate the need for modifying the production OS and the evaluation OS, and to provide the production OS and the evaluation OS. It is possible to speed up the exclusive control process between the two, and to suppress the influence on the execution of the production OS as much as possible.
To provide a file exclusion controller.

Another object of the present invention is to provide a file exclusive control device which makes effective use of the resources of the control table in the file exclusive control device and, as a result, achieves high speed file exclusive control.

[0012]

In order to achieve the above object, the file exclusive control device of the present invention uses a file position information.
Information using a control table containing information and exclusive control information.
File exclusion controller that manages the exclusive control of
The control table is the operating system
System (referred to as "OS") and evaluation OS
The host interface control unit recognizes whether the command received from the host computer is a command from the production OS or a command from the evaluation OS, and as a control table for managing exclusive control,
Of the said system <br/> control table which is divided into evaluation system OS and the production system OS, control tables corresponding to the recognition result
Ru with Le, characterized in that.

According to the present invention, the ratio between the area for the production OS and the area for the evaluation OS in the control table is changed according to the ratio of the load from the production OS to the load from the evaluation OS. It is characterized in that it is changed.

Further, according to the present invention, a plurality of host computers share a file, and exclusive control of file access of the plurality of host computers is performed by using file position information.
File that uses a control table containing exclusive control information
In Le exclusive control device, the interfaces between the plurality of host computers the file exclusive control device, the interface used in the production system operating system (called "OS"), and interfaces used in the evaluation system OS, the advance In advance, the file exclusion controller uses the control table by dividing it into a production system area and an evaluation system area, and recognizes system information on the production system and the evaluation system of the OS for the interface, Ru distinguish an area corresponding to the production-system or evaluation system of the control table according to the recognition result, characterized in that.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. In a preferred embodiment of the file exclusion control device of the present invention, whether the interface (host interface) of the host computer is used by the production OS or the evaluation OS is O of the host computer.
It is defined in advance on the S side, and the host interface control unit (110, 111, 11 in FIG. 1) of the file exclusion controller is
According to the definition, 2) recognizes from which system the received command is.

The control table (130 in FIG. 1) of the file exclusion controller is composed of the control table area for the production OS (131 in FIG. 1) and the control table area for the evaluation OS (FIG. 1).
Of the command received from the host interface control unit, and the exclusive control is performed by selectively using the control table according to the OS system.

In the embodiment of the present invention, the control table is divided into a production OS and an evaluation OS, so that the production OS and the evaluation OS are physically different files, but are logical files. Even if the same file numbers are the same, the file exclusion control can be processed correctly.

Further, in the embodiment of the present invention, the host interface is previously set to the production OS or the evaluation system O.
By defining which of S to use and recognizing this by the host interface control unit,
Even if a command from the same host computer
There is a distinction between a command from S and a command from the evaluation OS.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to describe the above-described embodiment of the present invention in more detail, an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. Referring to FIG. 1, three host computers 140, 150, 160 are connected to the file exclusion controller 100 in this embodiment. The file exclusion control device 100 is connected to each host computer via the host interface control units 110, 111, 112.
Host interface 143, 144, 153, 15
4, 163 and 164.

Host computers 140, 150, 16
0 is the production OS 141, 151, 161, respectively.
And the evaluation OSs 142, 152, 162 in the production OS
Controlled by.

The exclusive control unit 120 of the file exclusive control device 100 includes the host interface control units 110 and 11.
1 and 112 perform exclusive control processing by using the control table 130 in accordance with the file exclusive control command received from the host computer.

The control table 130 is divided into a production OS control table area 131 and an evaluation OS control table area 132. Production OS
The control table area 131 for evaluation and the control table area 132 for evaluation OS store the file position information and its exclusive control information as information, respectively.

The two areas in the control table 130 may be dynamically changed according to the ratio of commands.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIG.

First, each host computer 140, 15
0 and 160 are host interfaces 143 and 14
The file exclusion control processing device 100 is notified in advance as to whether 4, 153, 154, 163, and 164 are used in the production OS or the evaluation OS.

The host interface control units 110, 111, 112 of the file exclusion control processing device 100, according to the notification from the host computers 140, 150, 160, make each host interface a production OS or an evaluation OS.
Memorize which is used, and OS with command
The system information of is passed to the exclusive control unit 120.

The exclusive control unit 120 according to the OS system information, the production OS control table area 131 or the evaluation system OS control table area 13 of the control table 130.
2 is used to perform exclusive control processing.

FIG. 2 is a flow chart for explaining the processing flow of one embodiment of the present invention.
It is a figure for demonstrating the processing operation | movement of the dynamic allocation of the control table area for S and the control table area for evaluation OSs.

Referring to FIG. 2, when a dynamic resource allocation command is received from the host computer (step 20)
1), production OS command reception count and evaluation OS
The command reception count is cleared to zero (step 20
2) Start a fixed time timer (step 2)
03).

When a command is received from the production OS (step 204) while the timer is enabled, 1 is added to the production OS command reception count (step 205), and a command is received from the evaluation OS (step 20).
6), 1 is added to the evaluation system OS command reception count (step 207).

When the timer for a fixed time expires (step 208), the production OS control table 131 and the evaluation OS control table 131 are produced according to the production OS command reception count and the evaluation OS command reception count. Thirteen
The maximum number of entries of 2 is changed (step 209).

At this time, if the maximum number of entries that is less than the number of entries already in use is set, the command from the host computer is the unlock command (Un
lock) and other commands that release the resources of the control table are rejected, and lock commands (Lock) that newly use the resources of the control table are rejected.

Next, a second embodiment of the present invention will be described.

In this embodiment, referring to FIG. 1, in the control table 120, all areas are set as the production OS control table area 131 in the initial setting.

When a request to execute the evaluation system OS is made on a certain host computer, the host computer specifies a necessary amount to the file exclusion control processing device 100 by a reservation command for the evaluation system OS control table area 132. Secure the area.

When the operation by the evaluation OS is completed, the reserved evaluation OS control table area is released by a predetermined release command.

In the second embodiment of the present invention, as compared with the first embodiment, the area of the evaluation system OS control table area 132 can be fixed regardless of the load of the evaluation system OS, so that the area can be secured. Depending on the method, the influence of the production OS can be limited.

[0039]

As described above, according to the present invention,
The following effects are achieved.

The first effect of the present invention is that the production OS and the evaluation OS can operate independently and simultaneously. Therefore, according to the present invention, normally during business processing,
It is possible to evaluate software and investigate faults.

The reason is that, in the present invention, the control table is divided into the production OS and the evaluation OS, and the host interface control unit recognizes whether the command is from the production OS or the evaluation OS. Because it is configured to access the corresponding control table.

The second effect of the present invention is that the control table can be effectively used. That is, according to the present invention, even if the evaluation OS is executed, its influence can be prevented as much as possible from affecting the execution of the production OS.

The reason for this is that in the present invention, the control table is divided into the production OS and the evaluation OS, but each OS depends on the frequency of the command from the production OS and the command from the evaluation OS. This is because the control table area for use is dynamically allocated.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a processing flow of dynamic resource allocation according to an embodiment of the present invention.

[Explanation of symbols]

100 File exclusive control device 110, 111, 112 Host interface control unit 120 Exclusive control unit 130 Control table 131 Production OS control table area 132 Evaluation OS control table area 140, 150, 160 Host computer 141, 151, 161 Production OS 142, 152, 162 Evaluation system OS 143, 144, 153, 154, 163, 164 Host interface

Claims (4)

(57) [Claims] 1. Includes file position information and exclusive control information
Manage exclusive control of files using control table
In the file exclusion controller, the control table is a production operating system.
It is divided into one for "OS" and one for evaluation OS
The host interface control unit recognizes whether the command received from the host computer is a command from the production OS or a command from the evaluation OS, and as a control table for managing exclusive control, among the production system and evaluation system OS and for a partitioned the control table for OS, the recognition result Ru using <br/> the control table corresponding to the file exclusive control device, characterized in that. 2. The load from the production system OS and the evaluation system O
2. The file exclusion control processing device according to claim 1, wherein the ratio of the area for the production OS and the area for the evaluation OS in the control table is dynamically changed according to the ratio of the load from S. . 3. A plurality of host computers share a file, and file access information and exclusive control information are exclusively controlled for file access of the plurality of host computers.
File exclusion controller using the control table containing
Oite, the interfaces between the plurality of host computers the file exclusive control unit sets the interface to be used in a production-like operating system (called "OS"), and interfaces used in the evaluation system OS, the advance In the file exclusive control device , the control table is divided into a production area and an evaluation area to be used, and system information about the production system and the evaluation system of the OS for the interface is recognized, and the recognition result is obtained. file exclusive control device according to claim corresponding Ru selectively used area, that the production system or evaluation system of the control table according to. 4. The number of commands received from the production OS and the number of commands received from the evaluation OS are counted, and in accordance with the count value, an area for the production OS and an area for the evaluation OS in the control table. 4. The file exclusive control processing device according to claim 3, wherein the ratio of and is dynamically changed.