JP3298837B2 - Information processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an information processing system, and more particularly, to an information processing system in which a plurality of information processing apparatuses execute business-related processing in a hot standby mode.

[0002]

2. Description of the Related Art In information processing systems that require high reliability, systems are multiplexed. That is, a system is constructed by a plurality of information processing devices, and a predetermined information processing device among the information processing devices is used as a current device (hereinafter, referred to as a current device).
It is necessary to use the remaining information processing device as a standby device (hereinafter referred to as a standby device) so that if a failure occurs in the active device, the processing can be immediately taken over. In this mode, various programs, data, and the like are read in advance and put on standby. Such a form is called hot standby.

[0003]

By the way, when a system adopting such a hot standby mode (hereinafter referred to as a hot standby mode) is started, conventionally, an operator inputs a command from a console to execute each information processing. This has been done by activating the device as a working device or a standby device. Therefore, when the active device does not start, it is necessary for the operator to judge this, stop the system, and then perform an operation of starting the system again so that the predetermined standby device becomes the active device.

[0004] Therefore, when the active device does not start,
After the operator judges this and stops the system, it is necessary to change the active device and the standby device and restart the system.

[0005] In addition, since it is necessary to manually
There is also a problem that a human error may occur, and the system may not be able to start normally and the business may be interrupted. Furthermore, in recent years, a plurality of tasks are often executed in parallel, and in such a case, the active device for each task is generally distributed to each information processing apparatus in a distributed manner. If a certain information processing apparatus does not start, it is necessary to re-share the work. As a result, the starting operation becomes complicated, so that it takes more time to restart, and there is a problem that the occurrence of human error further increases.

[0006] The present invention has been made in view of the above points, and it is possible to reduce the burden on an operator and to provide information that can be started reliably and quickly even when a failure occurs in a predetermined information processing apparatus. It is an object to provide a processing system.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a plurality of information processing apparatuses 1-1 shown in FIG.
Setting information storage means 2 for storing setting information indicating whether each information processing apparatus is to be activated as an active apparatus or a standby apparatus in an information processing system that executes a process related to a job in a hot standby mode. When,
Active device activation detection means 1-1a for detecting whether or not the information processing device set as the active device in the setting information has been activated; and information processing which is set as the active device in the setting information when the system is activated. When the device reaches a predetermined process of the boot process, an active device boot unit 1-1b for executing a boot process as an active device, and an information processing set as a standby device in the setting information when the system is booted. When the apparatus has reached a predetermined process of the boot process, the apparatus waits for a predetermined time until the active apparatus boot detecting means 1-1a detects the activation of the active apparatus, and waits for the detection of the boot of the active apparatus. A standby device activating unit 1-1c for executing a boot process as a device, and executing a boot process as an active device when no boot is detected. The information processing system characterized in that it is provided.

[0008] The setting information storage means 2 stores setting information indicating whether each information processing apparatus is to be activated as an active apparatus or a standby apparatus. Active device activation detection means 1
-1a detects whether the information processing device set as the active device in the setting information has been activated. The active device activation unit 1-1b executes the activation process as the active device when the information processing device set as the active device in the setting information reaches a predetermined process of the activation process when the system is activated. When the information processing apparatus set as the standby apparatus in the setting information reaches a predetermined start-up process at the time of booting the system, the standby apparatus activation unit 1-1c detects the active apparatus activation detection unit 1-1a. It waits for a predetermined time until the start of the device is detected. When the start is detected, the process of starting the standby device is executed. When the start is not detected, the process of starting the active device is started. Is executed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a principle diagram for explaining the operation principle of the present invention. As shown in this figure, the information processing system according to the present invention includes a plurality of information processing apparatuses 1-1.
1 to 1-n, setting information storage means 2, and inter-system shared memory 3.

Since all of the information processing apparatuses 1-1 to 1-n have the same configuration, only the information processing apparatus 1-1 will be described. That is, the information processing apparatus 1-1 includes an active device activation detecting unit 1-1a, an active device activation unit 1-1b, a standby device activation unit 1-1c, a processing unit 1-1d, and I
F (Interface) 1-1e.

The active device activation detecting means 1-1a detects whether or not the information processing device set as the active device has already been activated in the setting information stored in the setting information storage means 2 described later.

The active device activation means 1-1b causes the processing unit 1-1d to execute the activation process as the active device when the system is activated, when the device itself is set as the active device.

When the self-starting device 1-1c is set as a standby device, the self-starting device 1-1c is activated by the self-starting device when the startup process reaches a predetermined process and enters a standby state. Also, if the standby device having a higher switching priority (details will be described later) is in the standby state, the processing unit 1-1d executes the activation process as the standby device. Also, when there is no information processing apparatus having a higher switching priority than its own, and the active apparatus has been activated, it is activated as a standby apparatus, and if the active apparatus is not activated, it is activated for a predetermined time. Only after meeting
If the active device or the standby device (the device having a higher priority than the own device) still does not start, the processing unit 1-1d executes the startup process as the standby device.

The processing unit 1-1d includes an active device activating unit 1-
1b or the standby device activation unit 1-1c is activated as an active device or a standby device, and executes various business processes. The IF 1-1e electrically connects the setting information storage unit 2, the information processing apparatus 1-1, and the inter-system shared memory 3, and enables data exchange between them.

The setting information storage means 2 is information (setting information) indicating whether each of the information processing apparatuses 1-1 to 1-n is set as an active apparatus or a standby apparatus when executing a certain task. I remember. Also, when the active device is not activated, the priority of each standby device when the standby device is switched to the active device and activated (hereinafter referred to as active switching priority) is also stored.

Next, the operation of the above principle diagram will be described. Now, suppose that the system is in a stopped state, and
Consider the case of starting. The information processing device 1-n is assigned to the active device, and the active switching priority is assigned to the information processing device 1-n in descending order.
1, information processing device 1-2, information processing device 1-3, ...
-It is assumed that it is the information processing apparatus 1- (n-1).

At this time, assuming that a command indicating that the task A is started is input to each information processing device from a console or the like (not shown), the information processing devices 1-1 to 1-n
Refers to the setting information stored in the setting information storage means 2 and recognizes whether it is set as an active device or a standby device.

For example, since the information processing device 1-n is set as the active device, the active device activation means (not shown) of the information processing device 1-n executes various setting processes according to a predetermined procedure. At the same time, the system shifts to the standby state by mounting various load modules.

The standby state is a state immediately before the active apparatus or the standby apparatus is started. When the apparatus is in this state, the active apparatus or the standby apparatus is restarted without restarting the system. It is in a state where it is possible to shift to any of them.

Since the information processing device 1-1 is set as a standby device, the standby device activation means 1-1
The transition to the standby state is achieved by the c executing various setting processes in accordance with a predetermined procedure or mounting a load module.

In such a state, the information processing apparatus 1
-N transitions to the standby state, the information processing apparatus 1
The -n active device activation unit 1-1b executes the activation process (final process) as the active device. As a result, the information processing device 1-n is activated as an active device.

The information processing apparatuses 1-1 to 1- (n-
Running system startup detecting means 1), that the information processing apparatus 1-n is started, for example, detected via the intersystem co memory 3. That is, each active device activation detection means detects that the active device has been activated by executing resource exclusion control via the inter-system shared memory 3. As a result, the information processing devices 1-1 to 1- (n-1) are activated as standby devices.

By the way, it is assumed that some trouble occurs in the information processing apparatus 1-n assigned to the active apparatus. In this case, the active device will not be activated, so that the active device activation detection means of the information processing devices 1-1 to 1- (n-1) cannot confirm activation of the active device, and wait for that. Notify the device activation means.

If the activation of the active device is not confirmed after waiting for a predetermined time, the standby device activation means refers to the setting information storage means 2 and refers to another information processing apparatus in the standby state. Then, it is determined whether or not there is an information processing device having a higher current switching priority than its own, and if it exists, it is activated as a standby device, and if it does not exist, after waiting for a predetermined time, If it does not exist, it starts up as an active device.

For example, in the case described above (the information processing apparatus 1-n
Information processing apparatus 1-1).
First enters the standby state, since the information processing apparatus 1-1 has the highest active apparatus switching order, the information processing apparatus 1-1 is activated as the active apparatus, and the other information processing apparatuses are set as standby apparatuses. Will be activated.

When a failure occurs not only in the information processing apparatus 1-n but also in the information processing apparatus 1-1, the information processing apparatus 1-2 is started up as an active apparatus, and the other information processing apparatuses stand by. It will be started as a device.

As described above, according to the information processing system of the present invention, it is possible to automatically start the information processing system adopting the hot standby mode without manual intervention. Further, even when a failure occurs in a predetermined information processing device, the information processing device set as the standby device is activated as the active device based on the preset priority order. Even when the error occurs, the system can be reliably started without requiring the intervention of the operator.

Next, an embodiment of the present invention will be described. FIG. 2 is a block diagram showing a configuration example of the embodiment of the present invention. As shown in the figure, the information processing system according to the present invention includes clusters # 1 to #n, an inter-system shared memory 20, an external storage device 21, a console 22, a communication control device 30, and terminal devices 41 to 44. It is configured.

The clusters # 1 to #n are, for example, CPU
(Central Processing Unit), ROM (Read Only Mem)
ory), a random access memory (RAM), and the like, and perform a predetermined task in response to a message input via the communication control device 30.

The inter-system shared memory 20 has a cluster #
This memory is shared by # 1 to #n, and is used when information is exchanged between clusters or when resource exclusion control is performed.

The external storage device 21 includes clusters # 1 to #n
And setting information indicating whether each cluster is assigned to the active device or the standby device in each service. Also, it stores a batch process, a load module, and the like, which are necessary when starting a business in each cluster.

The console 22 is connected to each of the clusters # 1 to #n
This is used when inputting predetermined information to or displaying information output from each cluster. In the embodiment shown in FIG. 2, one console is provided for all clusters. However, for example, one console may be provided for each cluster.

The communication control device 30 includes terminal devices 41 to 44
When information is exchanged between the cluster and the clusters # 1 to #n, a process of setting a route between them is performed. The terminal devices 41 to 44 are installed on the end user side, and while predetermined information is input according to the operation of the end user,
Predetermined processing (for example, information display processing) is executed according to the information transmitted from the clusters # 1 to #n.

Next, the operation of the above embodiment will be described. In this embodiment, a plurality of tasks A to X are executed in parallel. FIG. 3 schematically shows this state.

As shown in FIG. 3, in the present embodiment, tasks A to X are executed in parallel. For example, in the case of business A, cluster # 1 is assigned to the active device,
Clusters # 2 to #n are assigned to standby devices.

In the case of business B, cluster # 2 is assigned as the active device, and cluster # 1 and cluster # 3 are assigned to the standby device. Further, in the case of the operation X, the cluster # 3 is assigned as the active device, and the clusters # 1, # 2, # 4 to #m are assigned to the standby devices.

Now, if a command requesting to start the system is input from the console 22 in the case where the above settings are made, this command is notified to the clusters # 1 to #n. become.

Clusters # 1 to # which have received commands
n acquires and executes a batch file for performing initialization processing, various setting processing, and the like from the external storage device 21. Next, a file in which the type of business to be executed in the system and the procedure thereof are described is obtained from the external storage device 21, and a start process is executed according to the description.

FIG. 4 is a flowchart showing an example of processing executed in each cluster when each business is started. When this flowchart is started, the following processing is executed. In the following, the process in cluster # 1 will be described as an example. [S1] The type of business to be started is selected with reference to the information indicating the type of business and the start order stored in the external storage device 21. [S2] The startup procedure of the selected task is executed. here,
The business start procedure is a series of procedures necessary for starting a business, and includes, for example, mounting of various load modules and various setting processes. [S3] Referring to the setting information stored in the external storage device 21, it is determined whether or not the device itself is set as the active device. If the device is set as the active device, the process proceeds to step S9. Otherwise, the process proceeds to step S4. [S4] In the setting information stored in the external storage device 21, the standby flag indicating that the standby state has been set is set to "1".

The flags are all initialized to "0" before executing this flowchart. [S5] It is determined whether or not the standby device having a higher priority than itself is in the standby state. If the standby device is in the standby state, the process proceeds to step S10; otherwise, the process proceeds to step S6. [S6] It is determined whether or not the active device has been started. If it has been started, the process proceeds to step S10; otherwise, the process proceeds to step S7.

The determination as to whether or not the active device has been started can be made by executing the resource exclusion control by the inter-system shared memory 20. [S7] Referring to the setting information stored in the external storage device 21, it is determined whether or not the number of retries exceeds a preset number of retries, and if the number of retries is exceeded (retry processing is terminated). Proceeds to step S9, otherwise proceeds to step S8. [S8] With reference to the setting information stored in the external storage device 21, waiting is performed for a preset waiting time, and the process returns to step S5. [S9] The device starts up as the active device. [S10] The device starts up as a standby device.

Next, the details of the processing shown in the above flow chart will be described with reference to specific examples. Now, it is assumed that the information stored in the external storage device 21 is as shown in FIG. For example, in the case of the operation A, since “# 1” is set as the active processing device number, the cluster # 1 is selected as the active device of the operation A. In addition, since the number of retries is set to “5” and the waiting time is “1 minute”, the waiting for one minute is repeated five times as the retry processing.

In the active switching priority order, "#"
1 ", and in order 2 to (n-1),
"# 3", "# 2", ..., "# 5", ..., "#
(N-1) "is set. Therefore, cluster # 1
Is not activated as the active device, the cluster #
If the cluster # 3 is activated as the active device and the cluster # 3 is not activated, the cluster # 2 is activated as the active device.

The standby flag is a flag which is set to "1" when a standby state is set. In this example, only the cluster # 2 is in the standby state.

Note that the same information is set for the tasks B to X. In the case where the above information is stored in the external storage device 21, if a command for requesting the activation of the system is input from the console 22, the same processing as described above is executed, and the clusters # 1 to # 1 are executed. #N executes the process shown in FIG.
Execute business startup processing.

Now, assuming that task A is to be started,
In step S1 of the flowchart shown in FIG.
Is selected, and an activation procedure for the task A is executed in step S2. At this time, the cases are classified into (1) when all the clusters have shifted to the standby state, (2) when a failure occurs in the cluster # 1, and (3) when there is a failure in the cluster # 1 and the cluster # 3. This will be described below. (1) When all clusters have transitioned to the standby state.

The cluster # 1 recognizes that it is assigned to the active device by referring to the information stored in the external storage device 21. In step S3, YES is determined and the process proceeds to step S9. . As a result, the cluster # 1 starts up as an active device.

In clusters # 2 to #n, the determination in step S3 is NO and the process proceeds to step S4.
# 2 to #n included in the information corresponding to the task A shown in FIG.
Are all "1". At this time, for example, if the cluster # 3 enters the standby state for the first time, the standby flags of the other clusters remain “0”.
It is determined as O and the process proceeds to step S6. In step S6, since cluster # 1 has been activated as the active device, YES is determined and the process proceeds to step S10, where cluster # 3 is activated as the standby device.

By repeating the same processing, all the clusters # 2 to #n are activated as standby devices. (2) When a failure occurs in cluster # 1.

When the clusters # 2 to #n shift to the standby state, the standby flag is set to "1", and if the cluster having the higher priority of the active switching than its own is already in the standby state, Is determined to be YES in step S5, and the apparatus is activated as a standby apparatus in step S10. As a result, the cluster # 3 having the highest priority among the standby devices proceeds to step S6 without being activated as a standby device.

In step S6, it is determined whether or not the active device has been activated. However, since a failure has occurred in cluster # 1 and it has not been activated, the determination is NO here. Then, the process proceeds to step S7.

In step S7, the number of retries stored in the external storage device 21 is referred to, and it is determined whether or not the retry processing has been completed. As a result, if the retry process has not been completed, the process proceeds to step S8, and after waiting for the waiting time, the process proceeds to step S5.
The same process is repeated by returning to the process of (1). If it is determined that the retry processing has been completed, step S
Then, the process proceeds to step 9 to be started as the active device. As a result, when a failure occurs in the cluster # 1, the cluster # 3 having the highest priority is activated instead as the active device. (3) When a failure has occurred in cluster # 1 and cluster # 3.

In this case, the processing up to the middle is the same as in the case (2). However, since a failure has also occurred in the cluster # 3, the cluster # 2 having the next highest priority after the cluster # 3 enters the standby state and repeats the retry processing. As a result, when the retry process is completed (YES in step S7), in step S9, cluster # 2 is activated as the active device.

Since such processing is also executed for the tasks B to X, each task is started in accordance with the contents set in the setting information shown in FIG. Since the setting information stored in the external storage device 21 can be changed as appropriate, it is possible to perform the optimum setting by changing the setting content according to the system environment or the like. Become.

According to the embodiment described above, in an information processing system having a plurality of clusters, even when a plurality of tasks are started, all the tasks can be performed reliably and quickly by simply inputting a simple command. Can be started.

Further, even if a failure occurs in any of the clusters, another cluster having a higher priority is activated as an active device instead according to the setting information, so that no operator intervention is required. The system can be started.

As a result, it is possible to prevent the occurrence of an artificial judgment error or operation error, so that a secondary failure can be prevented and the system can be quickly started even when a failure occurs. It becomes possible.

[0058]

As described above, according to the present invention, in an information processing system in which a plurality of information processing apparatuses execute a process related to a task in a hot standby mode, each information processing apparatus is used as either an active apparatus or a standby apparatus. Setting information storage means for storing setting information indicating whether to start, active device start detecting means for detecting whether or not an information processing device set as the active device in the setting information has been started; Active device activation means for executing the activation process as the active device when the information processing device set as the active device in the information reaches a predetermined process of the activation process, and a standby device in the setting information when the system is activated. If the information processing device set as the preset has reached a predetermined process of the boot process, the active device boot detecting means detects the current process. It waits for a predetermined time until the start of the device is detected. When the start is detected, the process of starting the standby device is executed. When the start is not detected, the process of starting the active device is started. And that the information processing device set as the standby device is started instead even when a failure occurs in the information processing device set as the active device. Therefore, the burden on the operator can be reduced and the reliability of the system can be improved. In addition,
In the event of a failure, the standby device with the higher priority is activated as an alternative device
So that the best standby device is the
Can be started.

[Brief description of the drawings]

FIG. 1 is a principle diagram showing an operation principle of the present invention.

FIG. 2 is a block diagram illustrating a configuration example of an embodiment of the present invention.

FIG. 3 is a diagram showing a plurality of tasks A to A in the embodiment shown in FIG.
FIG. 7 is a diagram schematically illustrating a state in which X is executed in parallel.

FIG. 4 is a flowchart illustrating an example of a process executed when starting a job in the embodiment illustrated in FIG. 2;

FIG. 5 is a diagram illustrating an example of setting information stored in an external storage device illustrated in FIG. 2;

[Explanation of symbols]

 1-1 to 1-n Information processing device 1-1a Active device activation detection unit 1-1b Active device activation unit 1-1c Standby device activation unit 1-1d Processing unit 1-1e IF 2 Setting information storage unit 3 Shared between systems Memory 20 Shared memory between systems 21 External storage device 22 Console 30 Communication control device 41 to 44 Terminal device

──────────────────────────────────────────────────の Continued on front page (72) Inventor Yasuhiro Suzuki 7-37-10 Nishikamata, Ota-ku, Tokyo Inside Fujitsu Financial Systems Limited (72) Inventor Kazuo Nagatoshi 7-37-10 Nishikamata, Ota-ku, Tokyo (56) References JP-A-3-158934 (JP, A) JP-A 8-249201 (JP, A) JP-A 8-95932 (JP, A) JP-A 7- 121395 (JP, A) JP-A-7-248933 (JP, A) WO 97/49034 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 15/16-15 / 177 G06F 11/20

Claims (5)

(57) [Claims] 1. An information processing system in which a plurality of information processing apparatuses execute a process related to a job in a hot standby mode , wherein setting information indicating whether each information processing apparatus is to be activated as an active apparatus or a standby apparatus. Star of each information processing device
Standby information, and setting information storage means for storing the priority of each of the information processing devices , wherein each of the information processing devices determines whether or not the information processing device set as the active device in the setting information has been activated. Active device activation detecting means for detecting, when the information processing device set as the active device in the setting information reaches a predetermined process of the activation process when the system is activated, the activation process as the active device is executed. When the information processing device set as the standby device in the setting information reaches a predetermined start-up process when the system is started, the active device starting unit refers to the setting information storage unit and
Of the information processing device with a higher priority than the information processing device.
Waiting for a predetermined period of time until a transition to a standby state or detection of activation of the active device by the active device activation detection means, and information processing having a higher priority than the information processing device.
If it is detected that the device has transitioned to the standby state or the active device has been activated, the process for activating the standby device is executed, and information having a higher priority than the information processing device is executed.
And a standby device starting means for executing a starting process as the active device when the transition of the information processing device to the standby state and the activation of the active device are not detected. Processing system. 2. The information processing apparatus includes n (n ≧ 2) information processing apparatuses, and one of the n information processing apparatuses is assigned to an active apparatus and the other (n−2) The information processing system according to claim 1, wherein 1) the units are assigned to a standby device. 3. The information processing apparatus according to claim 1, wherein each of the plurality of information processing apparatuses
The setting information indicates the active device and the standby device for each task.
Information, and the active device activation means and the standby device activation means,
With reference to the setting information, the active device and the standby device are
3. The information processing apparatus according to claim 2, wherein
Management system. 4. The information stored in said setting information storage means.
The setting information can be changed externally.
The information processing system according to claim 2. 5. The information processing apparatus according to claim 1, wherein said active device activation detecting means is configured to output said information.
Exclusive control by the memory shared by the processing unit
Whether the information processing device set as the device has been started
3. The information processing apparatus according to claim 2, wherein whether or not the information processing is performed is detected.
Management system.