JPH0588925A - System stall monitor and control system for mutual standby system - Google Patents

Abstract

PURPOSE:To monitor a system stall based on the precedence of respective current business processing systems which is set by an information processing system user with respect to a host having plural business processing systems. CONSTITUTION:In the mutual standby system consisting of hosts 1 and 2, system stall monitor start means 13 and 23 start the system stall monitor in their systems 1 and 2 when it is detected by monitor success state detecting means 16 and 26 that current business processing systems 11 and 12 having the highest priority levels 41 and 42 in hosts 1 and 2 are in the monitor success state with standby business processing systems 21 and 22 of hosts 2 and 1, and system stall monitor means 14 and 24 stop the system stall monitor of their hosts 1 and 2 when it is detected by start state detecting means 15 and 25 that current business processing systems 11 and 12 having the highest priority levels 41 and 42 in hosts 1 and 2 are in the start state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mutual standby system, and more particularly to a system stall monitoring control system in the mutual standby system.

[0002]

2. Description of the Related Art In a mutual standby system, an active business processing system that is performing processing requested by an information processing user and a standby business processing system that takes over the business in the event of a failure of the active business processing system are grouped into one group. The host has an active business processing system and a standby business processing system in different groups, and monitors each other while performing their respective active business. It is a high-reliability system that prevents the information processing users from seeing that the processing cannot be continued by handing over the work to the standby business processing system of the local host that is in the same group as the operating business processing system of the failed host. ..

Conventionally, in this kind of mutual standby system, the priority control of the business processing system is not performed, and the system stall monitoring is started when the business processing system first becomes in the monitoring established state in its own host. The system stall monitoring was stopped when all the business processing systems that were in the monitoring established state became the monitoring unestablished state.

[0004]

In the above-mentioned conventional mutual standby system, the priority control of the business processing system is not performed, and the system is executed when the business processing system first enters the monitoring established state in its own host. System stall monitoring was stopped when the stall monitoring was started and all of the business processing systems that were in the monitoring established state were in the monitoring unestablished state. If the system stall cannot be controlled depending on the status, and the system stall is detected when the highest priority active application processing system in the local host is still in the unmonitored state after startup, the local host switching process is performed. , There is no standby job processing system that takes over the highest priority operation job,
There is a drawback that the work of high importance for information processing users is stopped.

In view of the above points, an object of the present invention is to perform system stall monitoring based on the priority of each active business processing system set by the information processing system user in a host having a plurality of business processing systems. It is to provide a system stall monitoring control method in a mutual standby system.

[0006]

The system stall monitoring and control method in the mutual standby system of the present invention is designed to perform work in the event of a failure of the active business processing system performing the processing requested by the information processing system user and the active business processing system. The standby business processing system to be taken over is one group, and each host has an active business processing system and a standby business processing system in different groups. When the status becomes available, the information processing user cannot continue processing by handing over the work to the standby job processing system of the local host, which is in the same group as the active job processing system of the host that has become unable to continue processing. In the mutual standby system, which is a high-reliability system that does not seem to be possible, detects the startup status of each business processing system in the local host. The activation status detecting means, the monitoring establishment status detecting means for detecting the monitoring establishment status of each business processing system in the local host, and the monitoring establishment status detecting means by which the highest priority active application processing system in the local host System stall monitoring start means for starting the system stall monitoring of the local host when it is detected that the status is established with the standby job processing system, and the operation of the highest priority in the local host by the startup status detecting means. And a system stall monitoring stop means for stopping the system stall monitoring of the own host when it is detected that the business processing system has started.

[0007]

In the system stall monitoring and control method for the mutual standby system according to the present invention, the activation status detecting means detects the activation status of each business processing system in the host, and the monitoring establishment status detecting means performs each business processing in the host. The system stall monitoring start means detects that the system has been established, and the monitoring establishment status detection means has set the highest priority active work processing system in the local host to the stand-by work processing system of another host. When it is detected, the system stall monitoring of the local host is started, and the system stall monitoring stop means detects that the highest priority active work processing system in the local host is in the active status by the active status detection means. Causes the system stall monitoring of the local host to stop.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a mutual standby system to which a system stall monitoring and control system according to an embodiment of the present invention is applied. This mutual standby system is composed of a host 1 and a host 2, and the host 1 and the host 2 are connected via a path 3.

In the hosts 1 and 2, the priority order of the group 31 consisting of the active business processing system 11 of the host 1 and the standby business processing system 21 of the host 2 is 4
1 and a group 32 composed of an active job processing system 12 of the host 1 and a standby job processing system 22 of the host 2.
Is set to 42, and the priority order 41 of the group 31 is higher than the priority order 42 of the group 32.

The host 1 includes an active business processing system 11 included in the group 31, an active business processing system 12 included in the group 32, a system stall monitoring start means 13, a system stall monitoring stop means 14, and each business processing. The system activation state detection means 15 and the monitoring establishment state detection means 16 of each business processing system are included.

The host 2 has a standby business processing system 21 included in the group 31, a standby business processing system 22 included in the group 32, a system stall monitoring start means 23, a system stall monitoring stop means 24, and each business processing. The system activation state detection means 25 and the monitoring establishment state detection means 26 of each business processing system are included.

FIG. 2 is a diagram showing a system stall monitoring state based on the states of the active business processing system 11 and the active business processing system 12 of the host 1.

Next, the operation of the system stall monitoring and control system in the mutual standby system of this embodiment having the above-mentioned configuration will be described.

When the information processing system user starts using the host 1 and the host 2 as a mutual standby system, the active business processing system 12 of the host 1 is used by the active business processing system 1
Assuming that the host 1 is activated before 1 and the standby operation processing system 22 of the host 2 is in the monitoring established state, the host 1
The startup status detecting means 15 existing in the host 1 detects that the active business processing system 12 is in the active status, and the monitoring establishment status detecting means 16 monitors the active business processing system 12 with the standby business processing system 22 of the host 2. The system stall monitoring start means 13 starts the system stall monitoring by detecting that the condition has been established.

Next, assuming that the active task processing system 11 of the host 1 is in the activated state, the host 1 indicates that the active task processing system 11 in the host 1 has activated the active task processing system 11. The active work processing system 11 that has a higher priority than the active work processing system 12 that has been detected and has already been started in the own host 1 has been started.
The system stall monitoring stop means 14 stops the system stall monitoring started by the establishment of the monitoring of the active business processing system 12.

Next, assuming that the active job processing system 11 of the host 1 and the active job processing system 21 of the host 2 are in the monitoring established state, the host 1 uses the monitoring established state detecting means 16 existing in the host 1 to execute the operating task. The system stall monitoring start means 13 starts system stall monitoring by detecting that the processing system 11 is in the monitoring established state with the standby job processing system 21 of the host 2.

Looking at this in FIG. 2, the operating business processing system 11
The system stall monitoring that was started by the establishment of the monitoring of the active job processing system 12 was stopped when the active task processing system 12 was started, and the system stall monitoring was started again when the monitoring of the active job processing system 11 was established. I understand that

By the way, in the conventional mutual standby system, since such a process is not performed, a system stall is detected before the active work processing system 11 is activated and before the stand-by work processing system 21 is in the monitoring established state. When the host is switched, there is no standby job processing system that should take over the running job of the running job processing system 11.
As a result, the work is not transferred to the standby work processing system 21,
For information processing users, the work with the highest priority may be stopped.

After that, when the operating task processing system 11 of the host 1 becomes the monitoring unsuccessful state, the host 1
The monitoring establishment status detecting means 16 existing in 1 detects that the active business processing system 11 and the standby business processing system 21 of the host 2 have not been monitored, and the system stall monitoring stopping means 14 monitors the active business processing system 11. Stop the system stall monitoring that was started due to establishment. Note that the system stall monitoring is stopped here because the system stall monitoring and control method of the present embodiment has introduced a priority order for supporting the active business processing system, and thus started when a certain active business processing system is monitored. This is because the system stall monitoring that has been performed is ended in accordance with the failure of monitoring of the operating task processing system.

Next, when the active work processing system 11 finishes the work, the highest priority working work processing system in the host 1 becomes the working work processing system 12, and the working work processing system 12 is the standby work processing system of the host 2. Since it is in the monitoring established state with 22, the host 1 restarts the system stall monitoring by the system stall monitoring starting means 13.

After that, when the operating task processing system 12 of the host 1 is in the monitoring unsuccessful state, the host 1 is monitored by the monitoring task status detecting means 16 existing in the host 1, and the operating task processing system 1 is activated.
2 detects that the host 2 and the standby job processing system 22 of the host 2 have not been monitored, and the system stall monitoring stop means 1
In step 4, the system stall monitoring started by the establishment of the monitoring of the active task processing system 12 is stopped.

Next, the active work processing system 12 finishes the work, but since there is no active work processing system in the monitoring established state with the standby work processing system of the host 2 in the host 1, the host 1 performs system stall monitoring. Do not start.

Although the system stall monitoring starting means 23, the system stall monitoring stopping means 24, the starting state detecting means 25 and the monitoring established state detecting means 26 of the host 2 are not mentioned in the description of the operation of the above embodiment. Needless to say, each of these means also operates in the same manner as the system stall monitoring start means 13, the system stall monitoring stop means 14, the startup state detecting means 15 and the monitoring established state detecting means 16 of the host 1.

[0025]

As described above, according to the present invention, in the mutual standby system, when the highest priority active transaction processing system in the local host is in the monitoring established state with the standby transaction processing system of another host, By starting the system stall monitoring of, and stopping the system stall monitoring of the local host when the highest priority active transaction processing system in the local host is activated, There is an effect that the system stall monitoring can be performed based on the priority order of each active business processing system set by the information processing system user.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a system stall monitoring control method in a mutual standby system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an operation of a system stall monitoring control method in the mutual standby system of the present embodiment.

[Explanation of symbols]

 1, 2 Hosts 3 paths 11, 12 Active business processing system 13, 23 System stall monitoring start means 14, 24 System stall monitoring stop means 15, 25 Startup status detection means 16, 26 Monitoring establishment status detection means 21, 22 Standby business processing System 31, 32 Group 41, 42 Priority

Claims (1)

[Claims] 1. An active business processing system performing processing required by an information processing system user and a standby business processing system that takes over the business in the event of a failure of the active business processing system are defined as one group, and each host has a different group. It has an active transaction processing system and a standby transaction processing system, monitors each other while performing their respective active tasks, and when other hosts are unable to continue processing, the operation of the host that has become unable to continue processing In the mutual standby system, which is a high-reliability system that prevents the information processing users from seeing that the processing cannot be continued by taking over the work to the standby business processing system of the local host that is in the same group as the business processing system, A startup status detection unit that detects the startup status of each business processing system in the local host, and a monitoring status check that detects the monitoring status of each business processing system in the local host. Means and this monitoring establishment status detection means, when it is detected that the highest priority active application processing system in the local host is in an established status with the standby application processing system of another host, the system stall monitoring of the local host And a system stall monitoring start means for starting the system stall monitoring of the own host when the start status detecting means detects that the highest priority active work processing system in the own host is in the started state. A system stall monitoring and controlling method in a mutual standby system, characterized by having a system stall monitoring stopping means.