JPH09163414A - Method and device for updating program for exchange system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain extremely efficient operation in a system for which the reduction of time to the restart of operation in the case of program updating processing and the reduction of nonoperating rate are regarded important. SOLUTION: When a program updating request is generated (step S2) during ordinary operation (step S1), only a '1' system is disconnected (step S3) while keeping the INS state of '0' system. Afterwards, the program updating processing of '1' system is performed (step S4), the memory extension of contents of hard disk device of '1' system into each main storage device is performed (step S5), the '1' system is turned into preheating operating state (step S6) and the '1' and '0' systems are switched (step S7). Next, the contents in the hard disk device of '1' system are copied to the hard disk device of '0' system (step S8). the memory extension of contents of hard disk device of '0' system into each main storage device is performed (step S9) and after the '0' system is turned into preheating operating state (step S10), the ordinary operation is recovered (step S11).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program updating method and apparatus for a switching system, and more particularly to a program updating processing method in a switching system in which a central control unit, a main storage unit and an external storage unit are duplicated.

[0002]

2. Description of the Related Art Conventionally, in this type of program update processing method, program update processing is performed in the procedure as shown in FIG. That is, when a program update request is generated during normal operation (step S21 in FIG. 4) (step S22 in FIG. 4), the active system and the standby system are disconnected (OUS: Out of Service) (step S23 in FIG. 4). .

That is, a 0-system (active system) hard disk device (HD0) 31, a main storage device (MM0) 32, a central processing unit (CPU0) 33, and a 1-system (standby system) hard disk device (HD1) 41, Main memory (MM1) 4
2. The central processing unit (CPU 1) 43 is separated from each other.

After that, the program update processing of the 0-system and 1-system hard disk devices 31 and 41 is performed (step S24 in FIG. 4), and the 0-system and 1-system hard disk devices 3 are performed.
The contents of Nos. 1 and 41 are expanded in the main storage devices 32 and 42, respectively (step S25 in FIG. 4), and the 0-system and the 1-system are respectively INS.
After being in the (In Service) state (step S26 in FIG. 4), the operation returns to the normal operation (step S27 in FIG. 4).

[0005]

In the above-mentioned conventional program update processing method, the active system and the standby system must be temporarily disconnected before the program update process of the active and standby hard disk devices is performed. In addition, since the active system and the standby system are in a disconnected state, it is necessary to perform the subsequent restart processing, and it takes a lot of time to restart the operation.

In Japanese Patent Laid-Open No. 5-153643, after the start of a series of maintenance management operations, the inter-system transfer processing of the exchange processing history information is prohibited even when the system is switched, and the backup processing of the exchange processing history information of each system is performed. A technique for shortening the maintenance management work time is disclosed later by comparing the exchange process history information of each system and storing the exchange process history information of the same content in a batch in the storage unit of each system.

However, in the above program update processing of the hard disk devices of the active system and the standby system, the contents of each of the hard disk devices of the active system and the standby system must be rewritten to the changed program.
The technology disclosed in Japanese Patent No. 153643 cannot be applied.

Therefore, an object of the present invention is to solve the above-mentioned problems, shorten the time until the operation is restarted at the time of program update processing, and be very efficient in a system in which reduction of downtime is important. An object of the present invention is to provide a program updating method and an apparatus thereof for an exchange system capable of achieving various operations.

[0009]

A program updating method for a switching system according to the present invention is a program updating method for a switching system comprising an active system and a standby system, wherein only the standby system responds to an update instruction from the outside. Is separated from the exchange system, a step of updating the program of the spare system separated from the exchange system, a step of performing a restart process by the spare system alone after updating the program, and a restart process are performed. And a step of performing a switching process between the spare system and the active system that has been removed.

In addition to the above steps, a method for updating a program of another exchange system according to the present invention includes a step of updating a program of a system that has become a standby system by switching between the standby system and the active system, and the program. And a step of performing resuming processing by the system alone after updating.

In another method of updating a program of a switching system according to the present invention, in the above step, in the step of updating the program, the content of an external storage device connected to the own system is updated, and the restart processing is performed. In this case, after the updated contents of the external storage device are expanded to the internal storage device of the own system, the own system is brought into the thermal preliminary operation state.

A program updating device for a switching system according to the present invention is a program updating device for a switching system consisting of an active system and a standby system, and disconnects only its own system from the switching system in response to an update instruction from the outside. Disconnecting means, updating means for updating the program of its own system after disconnecting from the exchange system by the disconnecting means, restart processing means for performing restart processing by the own system alone after updating of the program by the updating means, and the restart Each of the active system and the standby system is provided with switching means for performing switching processing between the own system and another system after the restart processing by the processing means.

According to another aspect of the present invention, there is provided a program updating device for a switching system, wherein:
It is configured to update the contents of the external storage device connected to the own system, and the restart processing means expands the contents of the external storage device updated by the updating means to the internal storage device of the own system and then the own system. Is in a thermal pre-operation state.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the operation of the present invention will be described below.

When a program update request is issued, only the 1-system is disconnected, and the 0-system is kept in the INS state, and the program update processing and restart processing of the 1-system are performed. After that, the system is switched between the 0 system and the 1 system, and only the 0 system is set in the disconnected state, and the program update process and the restart process in the 0 system are performed while the 1 system is in the INS state.

As a result, unlike the conventional program update processing method which requires downtime for several tens of minutes or several hours, the downtime due to program update is reduced to only the time required for system switching, and the downtime rate is reduced. Very efficient operation can be achieved in a switching system where importance is attached to.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. In the figure, the configuration of the communication control processor (CCP) 1 of each of the active system and the standby system of the switching system that is duplicated by the active system and the standby system (not shown) is shown.

That is, the communication control processor 1 includes the interrupt control unit 2 and the OUS in addition to the components for controlling communication.
The state / heat preliminary operation state control unit 3, the program update processing unit 4, and the system switching control unit 5 are included.

When a program update request is input from the outside, the interrupt control unit 2 uses an interrupt signal to determine the OUS status.
The thermal standby operation state control unit 3 is notified of the program update request. When an interrupt signal is input from the interrupt control unit 2, the OUS state / heat preliminary operation state control unit 3 disconnects its own external storage device, main storage device, and central processing unit (not shown) from each other (OUS state). Then, the program update processing unit 4 is activated.

When the program update processing unit 4 is activated by the OUS state / heat preliminary operation state control unit 3, the program update processing unit 4 performs a program update process on the external storage device, and then expands the contents of the external storage device to the main storage device. To do. When the expansion processing to the main storage device is completed, the program update processing unit 4 notifies the OUS state / heat preliminary operation state control unit 3 to that effect.

Upon receiving the notification from the program update processing unit 4, the OUS state / heat preliminary operation state control unit 3 sets the central processing unit in the idling state to set the own system in the heat preliminary operation state, and then performs system switching control to that effect. Notify Part 5. Upon receiving the notification from the OUS state / heat preliminary operation state control unit 3, the system switching control unit 5 switches between the self system and the other system, that is, the standby system and the working system.

The OUS state / heat preliminary operation state control unit 3
If the own system is the active system when the program update request is input, when the system switching control unit 5 notifies the system switching between the standby system and the active system, the system is disconnected and the program is executed in the same manner as above. The update processing unit 4 is activated. As a result, when the program update request is input, the program update process of the system that is the active system is performed.

FIG. 2 is a block diagram showing the system configuration of an embodiment of the present invention. In the figure, a switching system according to an embodiment of the present invention shows an active system (0 system) and a standby system (1 system).
It is composed of

0 system is a hard disk drive (HD0) 10
And a communication control processor (CCP0) having the configuration shown in FIG.
11 and the main memory (MM0, MM0 # 1, MM0 #
2) 12, 14, 16 and line control processor (LCP
0 # 1, LCP0 # 2) 13 and 15.

The line control processors 13 and 15 are connected to the communication control processor 11, and the line control processor 1
Main memory devices 14 and 16 are connected to 3 and 15, respectively. The communication control processor 11 includes a program update process for the hard disk device 10 while the 1 system is in operation,
Each main storage device 12, 1 of the contents of the hard disk device 10
Program update processing unit 11 for performing expansion processing to 4, 16
a is provided.

The first system is a hard disk drive (HD
1) 20 and a communication control processor (C
CP1) 21 and the main memory (MM1, MM1 # 1, M
M1 # 2) 22, 24, 26 and line control processors (LCP1 # 1, LCP1 # 2) 23, 25.

The line control processors 23 and 25 are connected to the communication control processor 21, and the line control processor 2
Main storage devices 24 and 26 are connected to 3 and 25, respectively. In the communication control processor 21, a program update process for the hard disk device 20 while the 0 system is in operation,
Each main storage device 22, 2 of the contents of the hard disk device 20
Program update processing unit 21 for performing expansion processing to 4, 26
a is provided.

FIG. 3 is a flowchart showing the operation of one embodiment of the present invention. A program update process of the exchange system according to the embodiment of the present invention will be described with reference to FIGS.

During a normal operation (step S1 in FIG. 3), when a program update request occurs due to a reason such as upgrading (step S2 in FIG. 3), the communication control processor 21
Interrupt controller 2 notifies the OUS status / heat preliminary operation status controller 3 of the program update request using the interrupt signal,
Only one system is disconnected by the OUS state / heat preliminary operation state control unit 3 (step S3 in FIG. 3). At this time,
The 0 system continues to be in the INS state.

The OUS state / heat preliminary operation state control unit 3 is 1
After setting only the system to the disconnected state, the program update processing unit 21a is activated, and the program update processing unit 21a performs the program update process of the hard disk device 20 (step S4 in FIG. 3) and the single restart process of the 1 system.

That is, the program update processing section 21a performs the program update processing of the hard disk device 20, and then expands the contents (HD information) of the hard disk device 20 into the main storage devices 22, 24 and 26 in the memory (step 3 in FIG. 3). S5), the communication control processor 21 and the line control processor 2 by the OUS state / heat preliminary operation state control unit 3
3 and 25 are respectively put in the idling state, and the system 1 is set in the thermal preliminary operation state (step S6 in FIG. 3).

After that, the system switching control section 5 for each of the 1-system and the 0-system switches between the own system and the other system, that is, the active system (0
The system is switched from the system) to the standby system (system 1) (step S7 in FIG. 3).

At this time, the 0-system hard disk drive 10
Memory expansion is not performed from the main memory devices 22, 24, and 26 of the 1st system to the 1st system, and the 0th system is in the disconnected state.
As a result, the active system of the exchange system becomes the system 1 whose program has been updated.

Further, in order to make the exchange system redundant, first, a hard disk copy is performed from the 1-system hard disk device 20 to the 0-system hard disk device 10 (step S8 in FIG. 3). Independent restart processing is performed.

That is, the program update processing unit 11a expands the contents (HD information) of the hard disk device 10 obtained by copying the contents of the hard disk device 20 into the main storage devices 12, 14, 16 in the memory (step S9 in FIG. 3). , OUS state / heat preliminary operation state control unit 3 by the communication control processor 11 and the line control processor 1
3 and 15 are respectively put in the idling state, and system 0 is set in the thermal preliminary operation state (step S10 in FIG. 3).

By performing the program update processing as described above, both the 0-system and the 1-system return to normal operation again in the updated form (step S11 in FIG. 3).

As described above, when the program update request is generated, only the 1-system is disconnected, and the 0-system is kept in the INS state, and the program-update process and the restart process of the 1-system are performed. By switching the system, leaving only the 0 system in the disconnected state, and performing the program update processing and restart processing in the 0 system while keeping the 1 system in the INS state, a program requiring a non-operating time for several tens of minutes or several hours of the conventional program. Unlike the update processing method, the system stop time (non-operation time) due to program update can be shortened to only the time required for system switching, and very efficient operation in a switching system where reduction of non-operation rate is important Can be achieved.

[0038]

As described above, according to the present invention, when a program update request occurs, only the backup system is disconnected, and the program update processing and restart processing in the backup system are performed while the active system is in the INS state. After that, the system is switched between the active system and the standby system, only the system that has become the new standby system is disconnected, and the program that becomes the standby system while leaving the newly active system in the operating state By performing update processing and restart processing, it is possible to shorten the time until operation restart during program update processing, and it is possible to achieve very efficient operation in a system where reduction of downtime is important. effective.

[Brief description of the drawings]

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

FIG. 2 is a block diagram illustrating a system configuration according to an embodiment of the present invention.

FIG. 3 is a flowchart showing the operation of one embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the conventional example.

[Explanation of symbols]

 1, 11 and 21 Communication control processor 2 Interrupt control unit 3 OUS state / heat preliminary operation state control unit 4, 11a, 21a Program update processing unit 5 System switching control unit 10, 20 Hard disk device 12, 14, 16, 22, 24 , 26 Main memory 13, 15, 23, 25 Line control processor

Claims (5)

[Claims] 1. A method for updating a program of a switching system consisting of an active system and a standby system, which comprises disconnecting only the standby system from the switching system in response to an update instruction from the outside, and disconnecting from the switching system. Performing a process of updating the separated spare system program, a process of restarting the spare system after the program is updated, and a process of switching between the spare system and the working system that have been restarted. And a program updating method comprising: 2. A step of updating a program of a system which has become a standby system by switching between the standby system and the active system,
The program updating method according to claim 1, further comprising the step of performing a restart process by the system alone after updating the program. 3. In the step of updating the program, the contents of an external storage device connected to its own system are updated, and in the step of performing the restart processing, the updated contents of the external storage device are updated inside the own system. 3. The program updating function according to claim 1 or 2, wherein the self-system is brought into a thermal preliminary operation state after being developed in the storage device. 4. A program updating device for a switching system consisting of an active system and a standby system, said disconnecting means for disconnecting only its own system from said switching system in response to an external update instruction, and said disconnecting means. Update means for updating the program of its own system after disconnection from the exchange system, restart processing means for performing restart processing by itself after the update of the program by the updating means, and own system after restart processing by the restart processing means A program updating device, characterized in that each of the active system and the standby system has switching means for performing switching processing with another system. 5. The updating means is configured to update the contents of an external storage device connected to the own system, and the resuming processing means updates the contents of the external storage device updated by the updating means to the own system. 5. The program updating device according to claim 4, wherein the system is configured to be in a thermal pre-operation state after being expanded in the internal storage device.