JPH0484225A - Information processing system - Google Patents

Abstract

PURPOSE:To prevent a whole system from breaking down by periodically communicating latest constitution information from the diagnostic device of a self system to the diagnostic device of the other system through the use of time when the processing of respective diagnostic devices is free and updating the other system constitution information storage areas of common access storage means which respective diagnostic devices have. CONSTITUTION:When the maintenance device 14 of the self system receives the report of the breakdown of the diagnostic device from the diagnostic device 11, the diagnostic device 11 is reset. Then, the communication control means 22 of the other diagnostic device 21 reads constitution information from the other system constitution information storage area 23b of the common access storage means 23 in the self system and the communication control means 12 of the diagnostic device 11 receives the constitution information. When the diagnostic device 11 recognizes that it receives constitution information from the other diagnostic device 21, it executes a restarting operation based on the constitution information. Constitution information which the diagnostic device 11 receives is latest constitution information before the diagnostic device 11 breaks down and accordingly and operation of the system can be continued in a state immediately before the diagnostic device 11 breaks down.

Description

[Detailed description of the invention] [Industrial application field] INDUSTRIAL APPLICATION This invention is utilized for failure recovery of an information processing apparatus.

The present invention relates to a failure recovery method for restarting a diagnostic device in a multi-configuration when a failure occurs.

〔overview〕

In an information processing system equipped with a plurality of information processing devices each having a diagnostic device, the present invention provides a method for periodically transmitting information from a diagnostic device of its own system to a diagnostic device of another system using idle time for processing of each diagnostic device. By communicating the latest configuration information to the system and updating the storage area of the other system's configuration information in the common access storage means of each diagnostic device, even if the diagnostic device goes down, the latest configuration information can be retrieved from the other system's diagnostic device. This is to prevent the entire system from going down.

[Conventional technology]

Conventionally, in this type of failure recovery method, when a failure occurs in a diagnostic device, information (configuration information, etc.) necessary for restarting the diagnostic device before the failure is stored in its own RAM, and each device is notified of the failure. Generally, a method is used in which the diagnostic device is notified and the diagnostic device is reset by the maintenance device, and then the diagnostic device is restored based on the information stored in its own RAM.

[Problem to be solved by the invention]

In the conventional failure recovery method described above, if a failure occurs in the diagnostic equipment and the diagnostic equipment goes down, the information necessary for restarting the equipment (configuration information, etc.) is stored in its own RAM. This has the disadvantage that the diagnostic device also destroys the configuration information of the system in operation that it has stored, and when the diagnostic device goes down, the entire system goes down.

The purpose of this project is to solve this problem by providing a system that can prevent the entire system from going down even if a diagnostic device goes down due to a failure.

[Means to solve the problem]

The present invention provides an information processing system in which a plurality of information processing apparatuses each having a diagnostic device are multi-configured, and the diagnostic device is provided with communication control means for controlling communication and storage means for storing configuration information of its own system. In the storage means,
Common access storage means including a own system configuration information storage area for storing configuration information of the own system and an other system configuration information storage area for storing configuration information of other systems is provided, and the communication control means means for storing the latest configuration information in the other system configuration information storage area of the common access storage means of the other system; and another system configuration information storage area of the common access storage means of the other system when a failure occurs in the own system. and means for importing the latest configuration information stored from.

The number of the multi-configured information processing apparatuses may be three or more, and the communication control means may include means for monitoring occurrence of free time and means for performing inter-party communication.

[Effect]

Each diagnostic device utilizes the free processing time of its own system,
The latest configuration information is stored in the other system configuration information storage area of the other system's common access storage means, and when a failure occurs in the own system's diagnostic device, the other system configuration information storage area of the other system's common access storage means is stored. Receives the latest configuration information from the area and restores its own diagnostic equipment.

This can prevent the entire system from going down even if some of the diagnostic devices go down due to a failure.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

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

In the embodiment of the present invention, a plurality of information processing apparatuses each having a diagnostic device 11.21 are configured in a multi-configuration, a maintenance device 14.24 is connected to each of the diagnostic devices 11.21, and a communication control means 12.22 for controlling communication. , own system configuration information storage areas 13a and 23a that store configuration information of the own system, and other system configuration information storage areas 13b and 2 that store configuration information of other systems.
common access storage means 13.23 comprising 3b;
The communication control means 12.22 utilizes free time to store the latest configuration information in the common access storage means 23 or 1 of other systems.
3. Means for storing in the other system configuration information storage area 23b or 13b, and common access storage means 23 for other systems when a failure occurs in the own system, or other system configuration information storage area 23 of 13.
b or 13b, means for monitoring the occurrence of free time, and means for performing broadcast communication.

One example of a multi-configuration is a system in which one information processing device is currently in use, while another information processing device is on standby as a backup.

Next, the operation of the embodiment of the present invention configured as described above will be explained. FIG. 2 is a flowchart showing the flow of operation of the embodiment of the present invention.

Common access storage means 13.23 of the diagnostic device 11.21
The self-system configuration information storage areas 13a and 23a each store the configuration information of the system currently in operation, and the diagnostic device 11.21 controls the diagnosis of each system operation, but always executes processing. Sometimes I'm not doing it, but I'm doing weights.

The communication control means 12.22 of the diagnostic device 11.21 monitors this waiting time, and regularly monitors the self-system configuration information storage areas 13a, 23a of the common access storage means 13.23.
The latest configuration information stored in the storage unit 13.23 is sent to the other system's diagnostic device, and the common access storage means 13.23 of the other system's information processing device
The configuration information in the other system configuration information storage areas 13b and 23b is updated.

When the communication between the diagnostic devices 11.21 is broadcast communication, the communication control means 12.22 of the diagnostic devices 11.21 communicates the configuration information using a method to prevent communication conflicts, such as lock control.

For example, if a failure occurs in the diagnostic device 11 for some reason and the diagnostic device 11 goes down, the diagnostic device 11 not only reports that the other system diagnostic device 21 is down from the communication control means 12, but also automatically The failure of the diagnostic device is also reported to the system maintenance device 14, and the processing of the diagnostic device 11 is stopped.

At this time, the common access storage means 2 of the other diagnostic device 21
The latest configuration information is periodically communicated by the diagnostic device 11 to the other system configuration information storage area 23b of No. 3, so the latest configuration information before the diagnostic device 11 goes down is stored.

When the maintenance device 14 in its own system receives a report from the diagnostic device 11 that the diagnostic device is down, it resets the diagnostic device 11, and then the communication control means 22 of the other diagnostic device 21 controls the common access storage device 23 in its own system. Other system configuration information storage area 23
The configuration information is read from b, and the communication control means 12 of the diagnostic device 11 receives the configuration information.

When the diagnostic device 11 confirms that it has received the configuration information from the other diagnostic device 21, it performs a restart operation based on this configuration information. The configuration information received by the diagnostic device 11 is
This is the latest configuration information before the diagnostic device 11 went down,
Therefore, it is possible to continue operating the system in the state immediately before the diagnostic device 11 goes down. Further, even if the other diagnostic device 21 fails, the operation can be continued in the same way.

〔Effect of the invention〕

As explained above, according to the present invention, the latest configuration information is periodically communicated from the diagnostic device of the own system to the diagnostic devices of the other system by using the time when the processing of each diagnostic device is idle. By updating the other system configuration information storage area of the common access storage means of the diagnostic device, even if one diagnostic device fails and goes down, the diagnostic device can be detected from the common access storage device of the other diagnostic device. The ability to receive the latest configuration information prior to installation is effective in preventing system failures.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a flowchart showing the operation flow of the embodiment of the present invention. 1.2...Diagnosed device, 11.21...Diagnostic device,
12.22...Communication control means, 13.23...Common access storage means, 14.24...Maintenance device.

Claims (1)

[Scope of Claims] 1. A plurality of information processing devices each having a diagnostic device are configured, and the diagnostic device includes: communication control means for controlling communication; and storage means for storing configuration information of its own system. In the information processing system, the storage means is provided with a common access storage means including a self-system configuration information storage area for storing configuration information of the own system and an other-system configuration information storage area for storing the configuration information of the other system, the communication control means, means for storing the latest configuration information in the other system configuration information storage area of the common access storage means of the other system using free time; An information processing system comprising a common access storage means and means for importing the latest configuration information stored from an other system configuration information storage area. 2. The information processing system according to claim 1, wherein the communication control means includes means for monitoring occurrence of free time. 3. The information processing system according to claim 1, wherein the number of the multi-configured information processing apparatuses is three or more, and the communication control means includes means for performing broadcast communication.