JP2000330829A - Inter-system communication processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restart inter-system communication without stopping a system even when a fault disabling a diagnostic control device from continuing processing is generated during the operation of the system. SOLUTION: In the inter-system communication processor, plural information processors each of which is constituted of an OS 100, a central processing unit(CPU) 200, a diagnostic control device 300, and a main storage device 400 are connected to Ethernet 700 and the OS 100 issues health check communication for monitoring a state between plural information processors at a fixed interval. When an abnormality detection means 306 in the control device 300 detects a fault and the fault disables the continuation of processing, a reboot control means 307 allows the control device 300 to run down to automatically restore it. A resending request informing means 308 issues a resending request to the OS 100 by using the automatic restoration as a trigger. The OS 100 starts to reregister the system identification number of the information processsor. Consequently, inter-system communication processing can be restored without restarting the system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-system communication processing device and an inter-system communication process for issuing health check communication at regular intervals via a diagnostic control device built in each information processing device and monitoring mutual states. About the method.

[0002]

2. Description of the Related Art An example of this kind of prior art is disclosed in Japanese Patent Application Laid-Open No.
186689. According to this method, in order to simultaneously manage the device states of a plurality of computers connected to the LAN without time lag among all the computers, the health check transmission mechanism of the master computer transmits the information at a fixed cycle or when the status is changed. All the device status information is broadcast transmitted to the computer, and if there is no response, it is determined that a failure has occurred, and the status information of the computer is rewritten as a failure.
Then, when all the device status information is transmitted at the time of the next broadcast transmission, the other computers can recognize the faulty computer, so that the device status can be simultaneously managed in all the computers without time lag.

According to this conventional technique, when a computer cannot respond in response to a failure, the other computers recognize the failed computer based on all apparatus status information transmitted by broadcast communication from the master computer, When the failed computer recovers, it can receive the broadcast communication of the failure recovery, recognize the device state, and restart the health check. In this case, the failure of the computer indicates a state in which the entire system stops due to the failure of the computer itself, and the recovery from the failure means that the inter-system communication processing is started by restarting the system thereafter. Say.

Another example of this kind of prior art is described in Japanese Patent Application Laid-Open No. 2-235169 as a "system monitoring device". FIG. 9 is a block diagram showing the system configuration disclosed in this publication. In this figure, the number of information processing systems is two, but the number of connectable information processing systems is not limited.

According to the block diagram of FIG. 9, an operation management means for exchanging operation management information with another information processing system, a system forced stop means for exchanging a system forced stop request, and an operation console transfer request are exchanged. A system support processing device is inserted between two information processing systems each including a system monitoring means including a console management means for performing the operation, and a plurality of consoles including a console which can be connected to another information processing system. I have.

[0006] The system support processing device includes operation management information,
It operates in response to a command from a central processing unit (not shown) of the information processing system that sends and receives a system stop request and a console console transfer request. Each of the information processing systems further includes, via the system support processing device, an inter-system communication transmitting unit that sends operation management information, a system stop request, and a console transfer request without delay, and arrives at the operation management information, system stop request. And the console transfer request, respectively,
A communication content analysis unit is provided as an analysis unit provided to each of the system forced stop unit and the console management unit. 2
Between the two information processing systems, a system monitoring operation using inter-system communication is performed by a system support device using a CPU instruction.

[0007]

However, the first problem of the technique described in Japanese Patent Application Laid-Open No. Hei 9-186689 is that when a computer failure occurs, the entire system is stopped and the system is restarted. It is necessary to restart inter-communication.

[0008] The second problem is that the load on the LAN increases due to the broadcast transmission from the master computer.

Further, a third problem is that in consideration of a case where no response is returned within a predetermined time, an overlapped process of performing one-to-one transmission to a device in a non-response state is required. That's what it means.

[0010] For this reason, as the number of hosts increases, the number of computers to be broadcast-transmitted also increases, and the number of computers responding to the broadcast also increases by the number of computers. Therefore, every time the master computer performs a health check, the master computer executes a health check. The load increases, causing a temporary performance drop.

Another problem with the technology described in Japanese Patent Application Laid-Open No. 2-235169 is that a new system support processing device is required to perform inter-system communication between two information processing systems. This means that the processing speed is reduced because the inter-system communication is transferred through the support processing device.

The reason is that this device does not have a processing mode for controlling inter-system communication in the information processing system, and requires the intervention of a new device, and issues inter-system communication via the device. Because it must be.

Further, a plurality of systems must be controlled by one system support apparatus, and there is a problem that a failure of the system support apparatus has a fatal effect on inter-system communication between all systems.

[0014] An object of the present invention is to restart processing of inter-system communication processing by the automatic recovery function of the diagnostic control device when a failure that cannot be continued in the diagnostic control device occurs during system operation. It is an object of the present invention to provide an inter-system communication processing device and an inter-system communication processing method that can restore inter-system communication processing without stopping the system and can improve the operation rate of the system.

Another object of the present invention is to realize control of inter-system communication in an information processing apparatus without passing through a special device such as a system support processing device, thereby achieving higher-speed inter-system communication. An object of the present invention is to provide a communication processing device and an inter-system communication processing method.

[0016]

According to a first aspect of the present invention, there is provided an inter-system communication processing apparatus which performs inter-system communication for mutual health check via a diagnostic control device built in each information processing apparatus. In the meantime, when a failure occurs in the diagnostic control device and an abnormality is detected in the health check, the health check can be automatically restarted with a subsequent recovery of the diagnostic control device as a trigger. .

According to a second aspect of the present invention, there is provided an inter-system communication processing apparatus which issues health check communication at regular intervals via a diagnostic control device incorporated in each information processing apparatus and monitors the state during the inter-system communication processing apparatus. In the diagnostic control device, an abnormality detecting means for detecting a failure that has occurred in its own device, and, if the detected failure is a process that cannot be continued in the diagnostic control device, shut down the diagnostic control device A reboot control unit for restoring by the automatic restoration function; and a retransmission request notifying unit for issuing a retransmission request for the health check communication to the OS of the information processing apparatus by using the automatic restoration as a trigger, and receiving the retransmission request. The OS initiates the re-registration of the system identification number of the information processing apparatus, thereby performing the health check communication without restarting the information processing system. Characterized in that it can be old.

According to a third aspect of the present invention, there is provided an inter-system communication processing apparatus in which an information processing apparatus including an operating system, a central processing unit, a diagnostic control unit, and a main storage device is connected to one Ethernet. In the inter-system communication processing device in the system, the operating system includes an inter-system communication control unit that controls health check communication for monitoring a state between the information processing devices, and a health check system between other information processing devices. Inter-system communication issuing means for instructing the issuance of a registration processing request at the time of communication or system startup, and inter-system communication receiving means for receiving inter-system communication of a health check or inter-system communication of a response from another system information processing apparatus; Until the inter-system communication of the response from the other-system information processing device to the inter-system communication of the health check issued to the other-system information processing device is received Response time monitoring means for monitoring time,
A message display unit for displaying a message such as recognition of an inter-system communication with another system information processing device or an abnormality, and a predetermined system identification number of the own system information processing device, And a system configuration information storage means for storing a system identification number of the other information processing apparatus when the other information processing apparatus is recognized by receiving the general communication of registration from the computer. An inter-system communication transmitting unit that receives an instruction of an inter-system communication issuance request from the system, an inter-system communication receiving unit that notifies the operating system of inter-system communication received from another system information processing device, and the diagnostic control device. DGP communication issuing means for giving instruction information for inter-system communication to request processing, and D for receiving general-purpose communication from the diagnostic control device.
GP communication receiving means, wherein the diagnostic control device manages a configuration of an OS command receiving means for receiving a processing request for inter-system communication from the central processing unit, and a configuration of the other system information processing apparatus, Communication processing means for controlling the transmission and reception of communication between systems, and a system identification number of the own system information processing device in response to a registration processing request from the own system information processing device, and registration from another system information processing device. A system identification number management table storage unit for storing a system identification number of the other system information processing device in response to a processing request; a second system host transmitting unit for transferring inter-system communication to the other system information processing device; Another-system host receiving means for receiving the inter-system communication, and a general-purpose communication notification for notifying the central processing unit to notify the operating system of the own-system information processing device of the inter-system communication received from the other system information processing device Means and before Abnormality detection means for detecting a failure that has occurred in the diagnostic control device; and reboot control means for bringing down the diagnostic control device and restoring it by an automatic recovery function when the failure cannot be continued in the diagnostic control device. And a retransmission request notifying unit for issuing to the operating system a retransmission request for restarting inter-system communication after the recovery by the diagnostic control device.

An inter-system communication processing method according to the present invention is an inter-system communication processing method between an information processing apparatus having an OS, a central processing unit, a main storage device, and a diagnostic control device. A procedure for instructing the issuance of a general-purpose communication of a health check at a fixed cycle for monitoring the status of the other-system information processing apparatus, and the general-purpose communication data is transferred from the OS to the central processing unit by the instruction. The procedure, the central processing unit writes the transfer data of the general-purpose communication to the main storage device, and notifies the processing request to the diagnostic control device. When the diagnostic control device receives the notification, the diagnostic control device reads the transfer data from the main storage device. A procedure for discriminating another information processing apparatus and issuing inter-system communication to another information processing apparatus;
In S, a procedure for monitoring the time until a response from the other system information processing device is returned after issuing the general-purpose communication of the health check to the other system information processing device, and a process for monitoring the other system information processing device when there is no response. Is determined as abnormal, and a message of the abnormality is displayed on the message display means. If the cause of the fault occurring in the diagnostic control device is a failure in which processing cannot be continued in the diagnostic control device, the diagnostic control device Is stopped and then recovered by the automatic recovery function, after the recovery, the retransmission request notifying means issues a retransmission request notification to the OS via the central processing unit, and the OS that receives the retransmission request. Is a step of issuing a notification of a registration processing request to the central processing unit in order to start the inter-system communication processing from the registration processing.

[0020]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing an overall configuration of an embodiment of the present invention. In this embodiment, the OSs 100 to 1n0,
Central processing units 200 to 2n0, diagnostic processing units 300 to 3
A plurality of information processing devices 500 to 5n0 including n0 and main storage devices 400 to 4n0 and a service processor 600 are connected to one Ethernet 700.

The OSs 100 to 1n0 control the status monitoring between the information processing devices 500 to 5n0 by the inter-system communication by the health check function.

The central processing units 200 to 2n0 are connected to the OS 10
0 to 1n0, the data of the inter-system communication is written to the main storage devices 400 to 4n0, and the diagnostic control device 300
To 3n0.

The diagnostic control devices 300 to 3n0 perform maintenance and diagnosis of the information processing devices 500 to 5n0, and perform system startup and shutdown processing including initialization of the information processing devices 500 to 5n0. In addition, OS100-1n0
Is started, the inter-system communication processing is controlled, log data for failure analysis at the time of occurrence of a failure in each of the information processing devices 500 to 5n0 is collected and transferred to the service processor 600, and in the case of a simple failure, a corrective action is taken. And so on.

In the main storage devices 400 to 4n0, transfer data of inter-system communication processing between the central processing units 200 to 2n0 and the diagnostic control devices 300 to 3n0 is written, and is necessary when the processing is transferred between these devices. Is temporarily stored.

The service processor 600 receives log data for failure analysis from the diagnostic control devices 300 to 3n0 when a failure occurs in the information processing devices 500 to 5n0, and displays the log data. It also implements an operator interface such as an external maintenance diagnosis command and a system startup instruction.

FIG. 2 shows an information processing apparatus 500 shown in FIG.
FIG. 3 is a diagram showing a detailed configuration of the embodiment. Other information processing device 510
To 5n0 have the same configuration.

The OS 100 includes information processing devices 500 to 5n
An inter-system communication control unit 101 that controls health check communication for monitoring a state between 0, issues a registration processing request when the OS is started,
n0 (hereinafter referred to as "other system host"), an inter-system communication issuing unit 102 for issuing a general-purpose inter-system communication for health check when monitoring the status, and an information processing device 50 required for registration processing
A system identification number of 0 (hereinafter, referred to as “local host”) is held in advance, the system identification number of the other system host is stored by a registration notification from the other system host, and the general-purpose system for health check is stored. A system configuration information storage unit for confirming a device configuration state when issuing a communication; a notification of a response from the other system host to the general system communication issued by the own system host; and a general system communication issued by the other system host. Communication receiving means 103 for receiving a response, a response time monitoring means 104 for monitoring a response from the other host for a certain time after issuing a general-purpose communication to the other host, and an inter-system communication between the other host. And a message display means 105 for displaying a message such as recognition of an error or an abnormality.

The central processing unit 200 includes an inter-system communication transmitting unit 201 for receiving an inter-system communication issuance request from the OS 100,
The communication data of the received inter-system communication request is stored in the main storage device 40.
0, and issues a processing request to the diagnostic control device 300.
DGP communication receiving means 2 for receiving a processing request from 00
04 and an inter-system communication receiving means 2 for notifying the OS 100 of the general-purpose inter-system communication received from the diagnosis control device 300.
02.

The diagnostic control unit 300 is provided with the central processing unit 20
OS command receiving means 301 that receives a processing request from the main storage device 400 and reads the transfer data from the main storage device 400;
When there is a registration processing request in the system identification number registration processing, the inter-system communication processing means 303 for issuing general-purpose inter-system communication to the other system host, and the system startup of each host according to the instruction data from 00 Register the system identification number in
A system identification number management table storage unit 309 that manages the registration status of the identification numbers of all the other hosts to be referred to when issuing inter-system communication to the other host, and a diagnosis control device 310 to 3n0 that exists in the other host. Other-system host transmitting means 304 for transmitting communication data for general-purpose communication to the other system, and another-system host receiving means 305 for receiving communication data for general-purpose communication from the diagnostic control devices 310 to 3n0 existing in the other system host.
A general-purpose communication notifying unit 302 that notifies the central processing unit 200 of general-purpose communication received from another system host, an abnormality detecting unit 306 that detects a failure of the diagnostic control device 300,
Reboot control means 307 for controlling the automatic recovery process in the case of a failure in which the processing cannot be continued by the diagnostic control device 300, and the OS 100 for restarting the inter-system communication processing of the OS 100 at the time of the automatic recovery by the diagnostic control device 300. And a retransmission request notifying unit 308 for notifying a retransmission request.

Next, referring to the inter-system communication instruction information in FIG. 3, the system identification number management table format in FIG. 4, the configuration example of the host in FIG. 5, and the process transition diagrams in FIG. 6 and FIG. The operation of the registration process will be described in detail.

The inter-system communication instruction information shown in FIG. 3 is data received by the CPU when the inter-system communication process is requested from the OS.
It distinguishes between a registration request and general-purpose communication based on the type code. In the case of a registration request, the system identification number becomes the own system number to be registered, and the communication data is invalid. In the case of general communication, the system identification number indicates the system number of the communication partner, the communication data becomes valid, and this is transferred to the OS of the other host of the partner.
The OS that has received the transfer can recognize the communication of the health check or the notification of the registration based on the code of the communication data.

For example, in the host configuration as shown in FIG. 5, when the system of the host 1 is started in a state where the host 2 has already started the system and the system identification number is registered, first, the OS 1 OS when it starts up
The first inter-system communication control means (101 in FIG. 2) reads a predetermined host system identification number from the system configuration information storage means (106) and requests the inter-system communication issuing means (102) for a registration processing request. Notify. The inter-system communication issuing means (102) sets "registration request" in the type code of the inter-system communication instruction information (FIG. 3), and sends the system identification number to the own host received from the inter-system communication control means (101). The system identification number to be registered is set, and the inter-system communication transmitting means (20
For 1), a registration processing request for the system identification number at the time of system startup is issued (step S1 in FIG. 6).

Inter-system communication transmission means (201) of CPU 1
To notify DGP1 of the registration processing request
The communication issuing means (203) is activated, and the data of the inter-system communication instruction information (FIG. 3), which is the communication data of the registration request received from the OS1, is stored in the main storage device (400) and notified to the DGP1 (step S2). ).

OS command receiving means of DGP1 (301)
Receives a registration request from the CPU 1 and receives a registration request from the main storage device (4
00) is read out. The inter-system communication processing means (303) recognizes that this command is a registration processing request from the type code of the read communication data, and stores the system identification number to be registered in the own system host in the system identification number management table storage means. It is registered in the area of its own host number (host 1) of (309) (step S3). As shown in FIG. 4, the format of the system identification number management table exists in the order of host numbers, and stores a flag indicating whether or not the system identification number has been registered and a system identification number specified by the host.

After creating the management table, the inter-system communication processing means (303) of the DGP1 transmits the other-system host transmitting means (30) of the DGP1 to register the own system identification number in the other-system host.
From 4), a notification of a registration processing request is issued to the other system host receiving means (315) of DGP2, and the registered system identification number is transferred (step S4).

D receiving the notification of the registration request from DGP1
The other-system host receiving means (315) of GP2 notifies the registration processing request to the inter-system communication processing means (313) of DGP2,
The system identification number of the host 1 of the transfer data received from the DGP1 is stored in the system identification number management table storage unit (31) of the DGP2.
The information is stored in the area of the host 1 in step 9) (step S5).
Subsequently, in DGP2, if the system identification number of the own system host has already been registered, the system identification number of host 2 is read from the system identification number management table storage means (319), and the DGP2 is read.
The system identification number of the host 2 is returned as reply data to the host 1 (step S6).

In DGP1, upon receiving the reply data from DGP2, if the reply data is the reply data of the registration processing and the system identification number of the other system host is returned, the system identification of host 2 which is the received data is returned. DGP number
The information is stored in the area of the host 2 in the first system identification number management table storage means (309) (step S7).

Subsequently, the inter-system communication control means (10
1) notifies the inter-system communication issuing means (102) of a general-purpose communication issuance request for registration notification in order to notify all host systems of registration and operation of the own system. The inter-system communication issuing means (102) sets the type code of the inter-system communication instruction information (FIG. 3) to "general-purpose communication", sets the system identification number to a code that designates the other party as the whole system, A code which is a registration notification is set in the data, and a general-purpose inter-system communication of the registration notification is issued to the inter-system communication transmitting means (201) of the CPU 1 (step S8 in FIG. 7). The inter-system communication transmitting means (201) of the CPU 1 activates the DGP communication issuing means (203) to notify the DGP 1 of the issuance request of the general inter-system communication, and mainly transmits the communication data of the general inter-system communication of the registration notification. It is stored in the storage device (400) and notified to the DGP1 (step S
9).

DGP 1 that has received a request to issue general-purpose inter-system communication
OS command receiving means (301) of the main storage device (40)
0), and reads the transfer data from the inter-system communication processing means (3).
03) recognizes that this command is a general-purpose communication processing request from the type code of the read communication data,
By recognizing from the system identification number of the communication data that the other party is designated as the entire system, the general-purpose inter-system communication is performed with respect to all the other hosts registered in the system identification number management table storage means (step 309). Transfer communication data.
In the system configuration shown in FIGS. 4 and 5, since the other host is only the host 2, the DGP 1 sends the other host transmitting means (304) from the other host transmitting means (304) to the other host receiving means (DGP 2). 315) to transfer the communication data of the general-purpose inter-system communication (step S1).
0).

DG receiving general-purpose inter-system communication from DGP1
The other-system host receiving unit (315) of P2 notifies the inter-system communication processing unit (313) of the DGP2 of the general-purpose inter-system communication processing request, and transfers the transfer data of the general-purpose inter-system communication received from the DGP1 to the main storage device (410). ), And notifies the CPU 2 of the general-purpose communication by the general-purpose communication notifying means (312) (step S11). Upon receiving the notification of the general-purpose inter-system communication from the DGP 2, the DGP communication reception means (214) of the CPU 2 reads the transfer data from the main storage device (410), activates the inter-system communication reception means (212), and activates the OS.
2 is notified of the communication data of the general-purpose communication (step S12).

The inter-system communication receiving means (113) of the OS 2
The registration of the host 1 is recognized based on the communication data of the general-purpose communication received from the CPU 2, and a message that “the operation of another system host of the system identification number 06 has been recognized” is displayed on the message display means (115) (step). S1
3). The inter-system communication control means (111) of the OS 2 stores the system identification number of the partner system in the system configuration information storage means (116) based on the received communication data, and uses it in the next one-to-one health check. Further, the inter-system communication control means (111) continuously sends the response notification general-purpose to the inter-system communication issuing means (112) in order to transfer communication data of a message serving as a response between the hosts to the registration notification. Notify the communication issue request. Inter-system communication issuing means (112)
Sets the type code of the inter-system communication instruction information (FIG. 3) to "general-purpose communication", sets the system identification number of the host 1 that has just received the registration notification as the destination, and sets the communication data Is set as a response to the registration notification, and a general notification of the response notification is issued to the inter-system communication transmitting means (211) of the CPU 2 (step S14).

Inter-system communication transmission means of CPU 2 (211)
Activates the DGP communication issuing means (213) to notify the DGP2 of the issuance request of the inter-system communication from the OS2, and stores the communication data of the inter-system communication of the response notification in the main storage device (410). To start DGP2 (step S
15).

DGP 2 that receives a request to issue general-purpose inter-system communication
The OS command receiving means (311) of the main storage (41)
0), and reads the transfer data from the inter-system communication processing means (3).
13) recognizes that this command is a general-purpose communication processing request from the type code of the communication data, and further recognizes that the destination is the host 1 from the system identification number of the communication data,
The communication data of the general-purpose system communication is transferred from the other-system host transmitting means (314) to the other-system host receiving means (305) of the DGP1 which is the destination host (step S16).

DG receiving general-purpose inter-system communication from DGP2
The other-system host receiving means (305) of P1 notifies the inter-system communication processing means (303) of the general-purpose system communication processing request, and transfers the transfer data of the general-purpose inter-system communication received from DGP2 to the main storage device (400). ), And notifies the CPU 1 of the general-purpose inter-system communication by the general-purpose communication notifying means (302) (step S17). Upon receiving the notification of the general-purpose inter-system communication from the DGP 1, the DGP communication reception means (204) of the CPU 1 reads the transfer data from the main storage device (400), activates the inter-system communication reception means (202), and activates the OS.
1 is notified of communication data of general-purpose inter-system communication (step S18). When the inter-system communication receiving means (103) of the OS 1 receives the general-purpose inter-system communication from the CPU 1, the response from the host 2 is recognized by the transfer data, and "the operation of the other system host of the system identification number 07 is recognized." Is displayed on the message display means (105).
The system communication control means (101) stores the system identification number of the partner system in the area of the host 2 of the system configuration information storage means (106) based on the received communication data (step S1).
9), used in the next one-on-one health check. Thereafter, the general-purpose communication of the health check from the host 1 to the host 2 is issued at regular intervals by the same processing as described above.

Next, the automatic recovery operation of the diagnostic control device according to the present embodiment will be described in detail with reference to FIG.

In the same manner as the above-described operation, the OS 1 issues a health check communication as a status monitor of another host (step V 1 in FIG. 8). When this is received by the CPU 1, the transfer data is written into the main storage device (400),
Sends a processing request for general-purpose communication to DGP1 (step V
2). Upon receiving the processing request for the inter-system communication, the DGP 1 reads the data from the main storage device (400) and transfers the data for the inter-system communication to the DGP 2 of the other system host (step V3).

At this time, if a failure occurs due to a factor that makes it impossible to continue processing in DGP2, the other-system host transmission means (304) of DGP1 suspends communication to DGP2 in order to detect a communication abnormality upon access to DGP2. (Step V
4). The OS 1 continues to wait for a response from the other host, but no response is returned in this state. Therefore, the response time monitoring means (104) of the OS 1 detects a timeout of the monitoring time (step V5), and An error message is displayed on the message display means (105) (step V6), and all health check processing remains stopped thereafter.

On the other hand, in DGP2, the abnormality detecting means (316) detects a failure (step V7),
The automatic recovery process is performed by the reboot control means (317) (Step V8), and after the cause of the failure is eliminated, the system is initialized and started again (Step V9). If it is restarted by the automatic recovery processing, the retransmission request notifying means (318) writes the data of the notification of the retransmission request to the OS2 to the main storage device (410), and the CPU 2
A retransmission request notification is issued to the P communication receiving means (214) (step V10).

The DG pair of the CPU 2 receiving the notification of the retransmission request
The P communication receiving means (214) reads the transfer data from the main storage device (410), and reads the inter-system communication receiving means (212).
And notifies the OS 2 of the communication data of the retransmission request general-purpose communication, and the inter-system communication receiving means (113) of the OS 2
Recognizes a retransmission request based on communication data of general-purpose inter-system communication received from the CPU 2, and executes inter-system communication control means (11
Start 1). The inter-system communication control means (111) reads a predetermined identification number of the own system from the system configuration information storage means (116), and notifies the inter-system communication issuing means (112) of a registration processing request by receiving a retransmission request. I do. The inter-system communication issuing means (112) sets "registration request" in the type code of the inter-system communication instruction information (FIG. 3), and registers in the own system received from the inter-system communication control means (111) in the system identification number. A system identification number to be set is set, and a registration processing request for the system identification number at the time of receiving the retransmission request is issued to the inter-system communication transmitting means (211) of the CPU 2 (step V11).

Although the host numbers are changed, FIG.
In step S2 to step S7 in FIG. 7 and in steps S8 to S12 in FIG. 7, the CPU 2 notifies the DGP 2 of the registration request (the same processing as in step S2 in FIG. 6). (Same processing as step S3), the registration request is notified from DGP2 to DGP1, and the registration processing is performed in DGP1 (same processing as steps S4 and S5). After that, the system identification number of the host 1 is recognized by the response from the DGP 1 to the DGP 2 (the same processing as in steps S6 and S7), and the host 2 issues the general-purpose inter-system communication of the registration notification to the host 1 (FIG. 7). Steps S8 to S12). The host 1 receives the general-purpose inter-system communication of the registration notification from the host 2 (step V1 in FIG. 8).
2) The host 1 recognizes the host 2 again (step V1).
3) After that, the health check on both hosts can be resumed.

[0052]

The first effect of the present invention is that even if the diagnostic control unit becomes uncontrollable due to a failure during the operation of the OS, the entire system is stopped and the inter-system communication processing is performed by restarting the system. An object of the present invention is to make it possible to restart automatically by triggering recovery of the diagnostic control device instead of restarting, thereby improving the operation rate of the system.

The reason is that, when a failure in which the processing cannot be continued occurs in the diagnostic control device, a recovery process is performed by the automatic recovery function, and a retransmission request is issued to the OS after restarting, thereby allowing the OS to execute the process. This is because a plurality of hosts can be recognized again because the registration processing is performed again, and the inter-system communication processing can be restarted.

The second effect is to speed up the inter-system communication processing. The reason is that the control of the inter-system communication process was performed by the dedicated device for performing the inter-system communication, but the control of the inter-system communication process was transferred to the diagnostic control device. This is because the time taken to go through was reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a system configuration to which the present invention can be applied;

FIG. 2 is a diagram showing an embodiment of the present invention.

FIG. 3 is a diagram showing a format of inter-system communication instruction information used in the present invention;

FIG. 4 is a diagram showing a format of a system identification number management table used in the present invention.

FIG. 5 is a diagram showing a specific configuration example for explaining the operation of the inter-system communication processing device of the present invention.

FIG. 6 is a diagram showing an operation in a first half of a registration process according to the present invention;

FIG. 7 is a diagram showing an operation in the latter half of the registration process in the present invention.

FIG. 8 is a diagram showing an operation of the diagnostic control device according to the present invention when a failure occurs.

FIG. 9 is a diagram showing a system configuration according to the related art.

[Explanation of symbols]

100, 110, 1n0 Operating system 200, 210, 2n0 Central processing unit 300, 310, 3n0 Diagnostic control device 400, 410, 4n0 Main storage device 500, 510, 5n0 Information processing device 600 Service processor 700 Ethernet 101 Inter-system communication control means Reference Signs List 102 inter-system communication issuing means 103 inter-system communication accepting means 104 response time monitoring means 105 message display means 106 system configuration information storage means 201 inter-system communication transmitting means 202 inter-system communication receiving means 203 pair DGP communication issuing unit 204 pair DGP communication reception Means 301 OS command receiving means 302 General-purpose communication notifying means 303 Inter-system communication processing means 304 Other-system host transmitting means 305 Other-system host receiving means 306 Abnormality detecting means 307 Reboot control means 308 Retransmission request notifying means 30 System identification number management table storage means

Claims (4)

[Claims] While performing inter-system communication for mutual health check via a diagnostic control device incorporated in each information processing device, a failure occurs in the diagnostic control device and the health check is performed. Wherein the health check can be automatically restarted by a subsequent recovery of the diagnostic control device when an abnormality is detected. 2. An inter-system communication processing device which issues health check communication at regular intervals via a diagnostic control device incorporated in each information processing device and monitors the state during the process, wherein the diagnostic control device is a self-device. Abnormality detection means for detecting a fault that has occurred; and reboot control means for, when the detected fault cannot be processed in the diagnostic control device, bringing the diagnostic control device down and restoring by an automatic recovery function, Resend request notifying means for issuing a resend request for the health check communication to the OS of the information processing apparatus by using the automatic recovery as a trigger, wherein the OS having received the resend request includes a system identification of the information processing apparatus. By starting re-registration of the number, the health check communication can be restored without restarting the information processing system. Shin processing apparatus. 3. An inter-system communication processing device in an information processing system in which an information processing device each including an operating system, a central processing unit, a diagnostic control device, and a main storage device is connected to a single Ethernet, The system includes an inter-system communication control unit that controls health check communication for monitoring a state between the information processing devices, a health check inter-system communication with another information processing device, and a registration process when the information processing system is started. Inter-system communication issuing means for instructing the issuance of a request; inter-system communication receiving means for receiving inter-system communication for health check and response from the other system information processing apparatus; Response time for monitoring the time until the inter-system communication of the response from the other system information processing device to the inter-system communication of the issued health check is received Viewing means, a message display means for displaying a message of recognition or abnormality of inter-system communication between the other system information processing apparatus, and a predetermined system identification number of the own system information processing apparatus. System configuration information storage means for storing a system identification number of the other information processing apparatus when the other information processing apparatus is recognized by receiving the general-purpose communication of registration from the system information processing apparatus; An inter-system communication transmitting unit that receives an instruction of an inter-system communication issuance request from the operating system; an inter-system communication receiving unit that notifies the operating system of inter-system communication received from another information processing apparatus; DGP communication issuing means for giving a request for processing by giving instruction information of inter-system communication to the diagnostic control device, and communication for receiving general-purpose communication from the diagnostic control device And a signal means, the diagnosis control unit receives a processing request for the inter-system communications from the central processing unit O
S command receiving means, inter-system communication processing means for managing the configuration of the other-system information processing apparatus, and controlling transmission and reception of inter-system communication with the other-system information processing apparatus, and receiving a registration processing request from the self-system information processing apparatus. A system identification number management table storing means for storing the system identification number of the own system information processing device, and storing the system identification number of the other system information processing device in response to a registration processing request from the other system information processing device; Other-system host transmitting means for transferring data to the other-system information processing apparatus, other-system host receiving means for receiving inter-system communication from the other-system information processing apparatus, and A general-purpose communication notifying unit that notifies the central processing unit to notify the operating system of the information processing device; an abnormality detecting unit that detects a failure that has occurred in the diagnostic control device; At A reboot control means for bringing down the diagnostic control device and recovering by the automatic recovery function when the processing cannot be continued; and a retransmission request for restarting inter-system communication after the recovery by the diagnostic control device to the operating system. An inter-system communication processing device comprising: a retransmission request notifying unit for issuing. 4. An inter-system communication processing method between an information processing apparatus including an OS, a central processing unit, a main storage device, and a diagnosis control device, wherein the OS of the information processing device is a state of another information processing device. A procedure for instructing the issuance of a general-purpose communication of a health check at regular intervals for monitoring, a procedure for transferring general-purpose communication data from the OS to the central processing unit according to the instruction, A procedure for writing the transfer data of the general-purpose communication to the main storage device and notifying the diagnostic control device of a processing request; and upon receiving the notification, the diagnostic control device reads the transfer data from the main storage device and determines the other system information processing device. Then, a procedure for issuing inter-system communication to another information processing apparatus, and the OS issuing a general-purpose inter-system communication for health check to the other information processing apparatus, and then responding from the other information processing apparatus. Determined but the procedure of monitoring until the reply time, if there is no response to the abnormality of other system information processing device,
A procedure for displaying an error message on a message display means; and when the cause of the failure occurring in the diagnostic control device is a failure in which processing cannot be continued in the diagnostic control device, the diagnostic control device is stopped. Procedure to recover by automatic recovery function, and after recovery, O
A procedure for issuing a notification of a retransmission request to the S and a procedure for the OS receiving the retransmission request to issue a notification of a registration processing request to the central processing unit in order to start the inter-system communication processing from the registration processing. An inter-system communication processing method comprising: