JP2002140128A - Method of restarting computer, method of initializing partial function of computer, method of stopping computer, method of starting computer, computer with restart function, and computer with function for initializing partial function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means which facilitates easy restarting of the whole computer system constituted of plural computers. SOLUTION: This computer restarting method is constituted of a step where each computer receives a restart command, a step where the computer executes the restart, and a step where the computer transmits restart completion information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for restarting a computer, a method for initializing a partial function of a computer, a method for stopping a computer, a method for starting a computer, a computer with a restart function, a computer with a partial function initialization function, and a halt. The present invention relates to a computer with a function, a computer with a start function, a computer system with a restart function, and a recording medium. How to start, computer with restart function,
The present invention relates to a computer with a partial function initialization function, a computer with a stop function, a computer with a start function, a computer system with a restart function, and a recording medium.

[0002]

2. Description of the Related Art When a computer (computer) such as a personal computer (PC) or a workstation (WS) is continuously used, it may be necessary to restart the computer every predetermined period. For example, depending on the operating system (OS), unnecessary information may be scattered in a storage device (memory) due to long use of the computer, and the reliability of the computer may be reduced.

[0003] Such a computer restart is conventionally performed by a system administrator or a user for each computer. Here, the computer may constitute a computer system connected by a network, and the whole computer system may need to be restarted.
However, it is extremely troublesome to restart such an entire computer system by manually restarting individual computers.

A means for automatically restarting a computer is disclosed in Japanese Patent Application Laid-Open No. 5-40549. However, it merely automates the restart of an individual computer. It does not allow a whole restart.

[0005]

SUMMARY OF THE INVENTION In view of the above, the present invention provides
It is an object of the present invention to provide means for easily restarting an entire computer system including a plurality of computers.

[0006]

Means for Solving the Problems (1) In order to solve the above problems, a computer restart method according to the present invention comprises:
A first restart command receiving step in which a first computer receives a first restart command instructing a restart of the first computer; and the first restart in the first restart command receiving step A first restart execution step in which the first computer that has received the command executes a restart, and the first computer restarted in the first restart execution step restarts the first computer. A first restart completion information transmitting step of transmitting first restart completion information for notifying the completion of the operation.

The first computer can be restarted by transmitting a first restart command to the first computer, and the completion of the restart can be confirmed by the first restart completion information.

Here, the first restart execution step includes:
A data saving step of saving backup data stored in the memory of the first computer, a reboot executing step of rebooting the operating system, and transferring the backup data saved in the data saving step to the memory. And a data reading step for reading. Since the backup data is saved and read before and after the execution of the reboot, the operation state of the first computer can be made the same before and after the reboot.

The first computer, which has received the first restart command in the first restart command receiving step,
A second restart command transmitting step of transmitting a second restart command for instructing a restart of the second computer to the second computer; and the second restart command in the second restart command transmitting step And the second computer receiving the second restart completion information notifying the completion of the restart of the second computer from the second computer. Can be provided.

[0010] By transmitting the first restart command to the first computer, not only the first computer but also the first computer is restarted.
The second computer connected to the second computer can be restarted, and the completion of the restart of the second computer can be confirmed by the second restart completion information.

[0011] Further, the second computer may be configured to detect the restart of the first computer on condition that the second computer is restarted.
The restart in the restart execution step can be executed. It can be ensured that the restart is performed in the order of the first computer and the second computer.

[0012] Here, the first computer determines from the second computer that has transmitted the second restart command in the second restart command transmitting step that the restart of the second computer has been completed. A second restart completion information receiving step of receiving the second restart completion information to be notified, wherein the second restart completion information receiving step includes receiving the second restart completion information by the second restart completion information receiving step. The first restart completion information can be transmitted by the first restart completion information transmitting step.

[0013] The first restart completion information is transmitted on condition that the second restart completion information is received from the second computer. Therefore, the side receiving the first restart completion information can communicate with the first computer. It can be confirmed that the restart of both the second computers has been completed.

The first restart command may be transmitted from the third computer, or may be transmitted as an inter-process transmission from the scheduler of the first computer.

(2) In the computer restart method according to the present invention, the first computer receives a first restart instruction for instructing restart of the first computer. The first computer having received the first restart command in the first restart command receiving step performs a first restart execution step of executing a restart, and the first computer executes a restart in the first restart execution step. Said first activated
A first restart completion information transmitting step of transmitting first restart completion information notifying the completion of the restart of the first computer, and the first restart completion information transmitting step. Receiving the first execution start command instructing the first computer to start execution of the first program by the first computer having transmitted the restart completion information of the first execution start command A first execution start step in which the first computer that has received the first execution start instruction in the first execution start instruction receiving step starts execution of the first program;
A first execution start information transmitting step in which the first computer that has started the execution of the first program in the first execution start step transmits first execution start information for notifying the start of the execution of the first program; And characterized in that:

By transmitting the first restart command and the first execution start command to the first computer, the first computer is restarted, and then the execution of the first program is started. it can.

(3) A method for initializing a partial function of a computer according to the present invention, wherein the computer receives a partial function initialization instruction for instructing initialization of a part of the functions of the computer. A partial function initialization execution step in which the computer that has received the partial function initialization instruction in the partial function initialization instruction reception step executes initialization of a partial function of the computer; and the partial function initialization execution step The partial function initialization completion information transmitting step of transmitting the partial function initialization completion information for notifying the completion of the partial function initialization.

By transmitting the partial function initialization command, the partial function of the computer can be initialized and its completion can be confirmed.

(4) In the computer stop method according to the present invention, the first computer receives a first stop command for stopping the operation of the first computer; A second stop command transmitting step in which the first computer that has received the first stop command in the first stop command receiving step transmits a second stop command that commands the stop of the operation of the second computer; A step of stopping the first computer that has transmitted the second stop command in the second stop command transmitting step.

By transmitting the first stop command to the first computer, not only the first computer but also the second computer connected to the first computer can be stopped.

(5) In the computer boot method according to the present invention, a first boot step in which the first computer boots up, and the first computer that has completed booting up in the boot up step, is executed by the second computer from the second computer. A second boot completion information receiving step of receiving second boot completion information for notifying completion of booting of the second computer; and the second boot completion information receiving step of receiving the second boot completion information in the second boot completion information receiving step. A first computer that transmits first activation completion information that notifies completion of activation of the first computer.

By receiving the first activation completion information, the activation of not only the first computer but also the second computer connected to the first computer can be confirmed.

(6) A computer with a restart function according to the present invention comprises: a first restart execution unit for executing a restart in response to a first restart command for restarting the computer; A second restart command unit for issuing a second restart command for commanding a restart of the second computer in response to the restart command, and a second notification unit for notifying completion of the restart by the first restart execution unit. And a first restart notification unit for issuing one restart completion information.

By sending the first restart command, the first
You can restart the computer and confirm its completion.

(7) The computer with a restart function according to the present invention includes a first restart execution unit for executing a restart in response to a first restart command for restarting the computer; A second restart instruction unit for issuing a second restart instruction for instructing a restart of the second computer based on the first restart instruction, and a second notification unit for notifying completion of the restart by the first restart execution unit. In response to receiving a first restart completion notifying unit for issuing the first restart completion information and a first execution start instruction for starting execution of the first program, the execution of the first program is started. A first execution start unit, and a first notification unit that notifies the start of execution of the first program in response to the start of execution of the first program by the first execution start unit.
And a first execution start notifying section for issuing execution start information.

By sending a first restart command and sending a first execution start command in response to receiving the first restart completion information,
The computer can be restarted and the first program can be executed.

(8) The computer with a partial function initialization function according to the present invention executes the partial function initialization in response to the reception of the partial function initialization instruction for instructing the initialization of a part of the functions of the computer. A partial function initialization execution unit, and a partial function initialization completion notifying unit that issues partial function initialization completion information that notifies completion of initialization of the partial function by the partial function initialization execution unit. I do.

By transmitting the partial function initialization command, the partial function initialization of the computer and its completion can be confirmed.

(9) A computer with a stop function according to the present invention comprises: a first stop execution unit for stopping the computer in response to receiving a first stop command for stopping the computer; A second stop command unit for issuing a second stop command for stopping the second computer in response to receiving the command.

By transmitting the first stop command, the computer and the second computer connected to the computer can be stopped.

(10) A computer with a boot function according to the present invention includes a first boot execution unit for starting the computer and a second notification unit for notifying the completion of the startup of the second computer.
And a first boot completion notifying unit for issuing first boot completion information for notifying completion of booting by the first boot execution unit as a condition for receiving the boot completion information.

By receiving the first activation completion information, the activation of both the computer and the second computer connected to the computer can be confirmed.

(11) A computer system with a restart function according to the present invention is a computer system with a restart function comprising a first computer and a second computer.
The system, wherein the first computer comprises the first computer.
First restarting the first computer in response to a first restart command for restarting the first computer
A restart execution unit, and the second restart instruction unit based on the first restart instruction.
A second restart command unit for issuing a second restart command for instructing the restart of the computer, wherein the second computer is configured to output the second restart command from the second restart command unit.
And a second restart execution unit for executing the restart of the second computer in response to the restart command.

By sending the first restart command to the first computer, the first computer and the second computer connected to the first computer can be restarted.

(12) A computer system with a restart function according to the present invention is a computer system with a restart function comprising a first computer and a second computer.
The system, wherein the first computer comprises the first computer.
First restarting the first computer in response to a first restart command for restarting the first computer
A restart execution unit, and the second restart instruction unit based on the first restart instruction.
A second restart command unit for issuing a second restart command for instructing the restart of the computer, and a first notification unit for notifying the completion of the restart of the first computer by the first restart execution unit.
Restart notification unit for issuing restart completion information of the first program, and first execution start for starting execution of the first program in response to a first execution start command for instructing start of execution of the first program And a second execution start command unit that issues a second execution start command for instructing the second computer to start execution of a second program in response to the first execution start command, A second restart execution unit configured to execute a restart of the second computer in response to the second restart instruction issued by the second restart instruction unit; A second restart notifying unit for issuing second restart completion information for notifying the completion of the restart of the second computer by the restart executing unit, and the second execution issued by the second execution start command unit A second command for starting execution of the second program in response to a start command; And having a row beginning.

By sending the first restart command and the first execution start command to the first computer, both the first computer and the second computer can be restarted and the program can be executed. .

[0037]

Embodiments of the present invention will be described below in detail with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram showing a configuration of a computer system according to a first embodiment of the present invention. As shown in FIG. 1, a computer 10, a computer 20, and a computer 30 are connected in a tree shape with upper, middle, and lower networks via networks 40, 50.
Make up the system. That is, the host computer 1
Numeral 0 gives a command to a middle computer 20 and a lower computer 30 which are slave computers as a master computer, and receives information.

As an example of this computer system, a micro gas turbine (Micro G
A centralized monitoring system that controls as Turbine is conceivable. At this time, the upper computer 10 is a monitoring server installed in a monitoring center, and the middle computer 20 and the lower computer 30 are a control server installed in a control site and a control computer for directly controlling a control target, respectively. It is. However, the computer system according to the present invention is not limited to such control, and it is sufficient that the computers are connected in some hierarchy.

Each of the upper computer 10, the middle computer 20, and the lower computer 30 is, for example, a personal computer (PC) or a workstation (WS). The lower computer 30 may be a control computer. Some of the upper computer 10, the middle computer 20, and the lower computer 30 may include computers that do not need to be restarted (for example, the control computer performs a long continuous operation. However, a dedicated operating system (OS) that does not require a restart may be used).

The networks 40 and 50 are LAN (Lo)
cal Area Network), WAN (Wid)
e Area Network), and the line used for this may include both a dedicated line and a general line. The upper computer 10 includes the computer 10
(1) to 10 (p) and a plurality of computers are included.

A plurality of middle computers 20 are connected to the upper computer 10, respectively. FIG. 1 shows only the computers 20 (i1) to 20 (iq) connected to the upper computer 10 (i) of the middle computer 20 through the network 40 (i).

A plurality of lower computers 30 are connected to the middle computer 20, respectively. FIG.
Are computers 30 (ij1) to 30 (ijr) connected to the middle computer 20 (ij) of the lower computers 30 via the network 50 (ij).
Only shows.

The computer system shown in FIG. 1 is composed of an upper computer 10, an intermediate computer 20, and a lower computer 30 in a three-stage tree structure. The depth of the tree may be two stages. Alternatively, four or more steps may be used. Further, each of these three layers may be constituted by a single computer.

Next, the internal configuration of each of the computers 10, 20, and 30 is shown in FIGS. FIG. 2 is a block diagram illustrating an internal configuration of the host computer 10 (i). As shown in FIG. 2, the host computer 10 (i)
Comprises a computer main unit 100 (i) and an auxiliary storage device 101 (i) such as a hard disk. The computer main unit 100 (i) further includes a scheduler 102, a first restart instruction unit 103, and a transmission / reception unit 104.

The scheduler 102 instructs the first restart command unit 103 to issue a first restart command. The first restart command unit 103 issues a first restart command to the middle-level computer 20 based on an instruction from the scheduler 102. The transmission / reception unit 104 transmits / receives a first restart command, first restart completion information, and the like to / from the intermediate computer 20 via the network 40 (i).

FIG. 3 shows a middle computer 20 (ij).
FIG. 3 is a block diagram illustrating an internal configuration of the device. As shown in FIG. 3, the middle computer 20 (ij) includes a computer main body 200 (ij) and an auxiliary storage device 201 (ij) such as a hard disk.
(Ij) further includes a first restart execution unit 202, a second restart instruction unit 203, a first restart notification unit 204, and the transmission / reception unit 20.
5 is comprised.

The first restart execution unit 202 executes the restart of the middle computer 20 (ij) in response to the first restart command. The second restart command unit 203 responds to the first restart command by issuing a second restart command to the lower-level computer 30.
Issue a restart command. The first restart notification unit 204 notifies the host computer 10 (i) of the completion of the restart by the first restart execution unit 202. Transmission / reception unit 205
Transmits / receives a first restart command, first restart completion information, and the like to / from a higher-level computer 10 (i) via the networks 40 (i) and 50 (ij), and a lower-level computer 30 (ijk) , A second restart command, second restart completion information, and the like are transmitted and received.

FIG. 4 shows a lower computer 30 (ij
It is a block diagram showing the internal structure of k). As shown in FIG. 4, the lower-level computer 30 (ijk) includes a computer main body 300 (ijk) and an auxiliary storage device 301 (ijk) such as a hard disk.
00 (ijk) is the second restart execution unit 302,
A restart notification unit 303 and a transmission / reception unit 304 are provided.

The second restart execution unit 302 restarts the lower computer 30 (ijk) in response to the second restart command. The second restart notification unit 303 notifies the middle computer 20 (ij) of the completion of the restart by the second restart execution unit 302. The transmission / reception unit 304
The second restart command and the second restart completion information are transmitted / received to / from the intermediate computer 20 (ij) via the network 50 (ij).

Next, the operation of the computer system according to the first embodiment will be described with reference to the drawings.
FIG. 5 is a flowchart illustrating a restart procedure of the computer system according to the first embodiment. Hereinafter, the operation procedure of the computer system according to the first embodiment will be described in detail with reference to FIG.

(1) A first restart command for instructing execution of a restart is transmitted from the host computer 10 (i) to the middle computer 20 (ij) (step S101). This first restart command is transmitted to the computer 1
0 (i) based on an instruction from the scheduler 102
It is issued from the restart instruction unit 103. The first restart command issued from the first restart command unit 103 is
04 via the network 40 (i).

The instruction from the scheduler 102 to the first restart command unit 103 may be issued periodically, for example, one day or one week, or may be given by designating a specific date and time.
Note that the first restart instruction is issued by the middle computer 20.
(Ij) as well as middle-level computers 20 (i1) to 20 (i) connected to the higher-level computer 10 (i).
q).

(2) The first restart command transmitted from the host computer 10 (i) is
0 (ij) is received by the transmission / reception unit 205 (step S102). Note that the host computer 10 (i)
Computers 20 (i1) to 20 connected to
All of (iq) can receive the first restart command.

(3) Based on the received first restart command, the first restart execution unit 202 executes the computer 20
(Ij) is restarted (step S103). This restart can be performed simultaneously by all of the middle-level computers 20 (i1) to 20 (iq) that have received the first restart instruction.

The restart execution step in S103 can be further divided as shown in FIG. The backup data on the storage device (memory) of the computer 20 (ij) is stored in the auxiliary storage device 201 (ij) (step S121). This backup data is data necessary for returning the operating state of the computer to the state before the restart after the restart. The backup data does not include unnecessary information described later.

The computer 20 (ij) is rebooted (step S122). The reboot is an operation system (O) of the computer 20 (ij).
This refers to temporarily stopping the operation of the running process including S), and then restarting the operation of the computer 20 (ij). When the operation of the computer 20 (ij) is resumed, the OS is usually loaded into the storage device of the computer 20 (ij).

By the reboot, the OS of the computer is
Unnecessary information (dust or garbage) generated on the memory by the continuous operation of is erased. Since the usable area of the memory occupied by the unnecessary information is released, the reliability of the operation of the computer is improved.

The backup data stored on the auxiliary storage device 201 (ij) is stored in the computer 20 (ij).
Is read into the storage device (memory) of the
123). It is possible to specify in advance a program that automatically operates immediately after the computer 20 (ij) is rebooted, and this reading process can be performed by the specified program.

The restart of the computer 20 (ij) is completed (step S124). Computer 20 (i
In j), as a result of reading the backup data into the memory, it is possible to return to the operation state immediately before the restart, and furthermore, to eliminate unnecessary information on the memory due to long-term operation of the OS. If the operating system only needs to be running, it is not necessary to save and read the backup data in steps S121 and S123.

(4) Based on the received first restart command, a second restart command is issued from the second start command unit 203 to the lower-level computer 30 (ijk). This second restart command is transmitted from the transmission / reception unit 205 (step S104). The medium computer 20
Lower computer 30 (ij) connected to (ij)
The second restart instruction can be transmitted to all of 1) to 30 (ijr).

(5) The second restart command transmitted from the middle computer 20 (ij) is received by the transmission / reception unit 304 of the lower computer 30 (ijk) (step S105). The medium computer 20
Lower computer 30 (ij) connected to (ij)
All of 1) to 30 (ijr) can receive the second restart command.

(6) Based on the received second restart command, the second restart execution unit 302 restarts the lower-level computer 30 (ijr) (step S10).
6). This restart can be performed simultaneously by all of the lower-level computers 30 (ij1) to 30 (ijr) that have received the second restart command. As a result, by transmitting the first restart command from the host computer 10 (i), not only the host computer 20 (ij) directly connected to the host computer 10 (i) but also the host computer 20 (ij) It is also possible to simultaneously restart the lower-level computer 30 (ijk) indirectly connected to the computer 10 (i). This is because the middle computer 20 (i
The second restart command unit 203 provided in j) issues a second restart command to the lower-level computer 30 in response to the first restart command.

It is also possible to connect a lower order computer to a lower layer of the lower order computer 30, and the lower order computer 30 has a third restart command section corresponding to the second restart command section 203. . In this way, the restart command from the higher-level computer 10 (i) is transmitted in the order of the middle-level computer 20 (ij), the lower-level computer 30 (ijk), and the lower-level computer. At any stage, a single restart command can restart all computers connected to the tree. Note that the restart in step S106 can be divided into steps 121 to S124 shown in FIG. 6 as in step S103.

(7) Lower computer 30 (ijk)
Is completed, the middle-level computer 20 (i
The second restart notification unit 303 issues second restart completion information for notifying j) the completion of the restart of the lower-level computer 30 (ijk). This second restart completion information includes:
The intermediate computer 20 (i
j) (step S107). The transmission of the second restart completion information is performed by the computer 30 (ij
k) as well as lower computers 30 (ij1) to 30 (ij) connected to the middle computer 20 (ij).
jr).

(8) Lower computer 30 (ijk)
Is received by the transmitting / receiving unit 205 of the middle computer 20 (ij) (step S108). The medium computer 20
(Ij) is the lower computers 30 (ij1) to 30
All of the second restart completion information transmitted from (ijr) can be received.

(9) Completion of restart of the middle-level computer 20 (ij) in step S103 and step S10
In step S109, it is determined whether both the reception of the second restart completion information from the lower-level computer 30 (ijk) has been performed.

Then, the intermediate computer 20 (ij)
When the restart of the computer 20 and the reception of the second restart completion information are both performed, the intermediate computer 20 (ij)
Restart completion information for notifying the completion of restart of the first
Emitted from the restart notification unit 204. The first restart completion information is transmitted from the transmission / reception unit 205 to the host computer 10.
It is transmitted to (i) (step S110).

Here, in step S108, the second restart completion information can be received from all of the lower-level computers 30 (ij1) to 30 (ijr). (2) The condition may be that all the restart completion information has been received. At this time, the transmission of the first restart completion information in step S110 is performed not only for the middle computer 20 (ij), but also for the lower computers 30 (ij1) to 30 (ij1) to 30 (ij) connected to the middle computer 20 (ij). ijr)
Can be transmitted as information indicating that all restarts have been completed.

(10) Host computer 10 (i)
Receives the first restart completion information transmitted from the intermediate computer 20 (ij) by the transmitting / receiving unit 104 (S1).
11). The received first restart completion information is sent to the scheduler 102 and is determined as the completion of the restart of the computers of the middle computer 20 (ij) and the lower computer 30 (ijk). After that, the transmission of the first restart command in step 101 is performed again as needed.

The transmission of the first restart completion information in step S110 is performed not only for the middle computer 20 (ij) but also for the middle computers 20 (ij1) to 20 (ij1) to 20 (ij1) to 20 (Ijq) can be transmitted. Accordingly, upon receiving the first activation completion information from all of these middle-level computers 20 (ij1) to 20 (ijq), the middle-level computers 20 connected to the upper-level computer 10 (i) in a tree-like manner It can be determined that all the lower-level computers 30 have been restarted.

(First Modification of First Embodiment) Next, a computer system according to a first modification of the first embodiment of the present invention will be described. The configuration of the computer system at this time is similar to that of the first embodiment already described with reference to FIGS.
It is represented by In this modification, the restart of the lower-level computer 30 (ijk) by the second restart execution
In addition to receiving the restart command, the intermediate computer 20 (i
The difference from the first embodiment is that the restart is performed under the condition that the restart of j) is detected.

FIG. 7 is a flowchart showing a restarting procedure in this modification. The flowchart of FIG.
1 and the point that S132 is added is different from FIG. 5 showing the restart procedure in the first embodiment. Here, steps from step S105 to step S106 will be described. The other steps are not particularly different from those of the first embodiment, and thus duplicated description will be omitted.

(1) The second restart command transmitted from the middle computer 20 (ij) is received by the transmission / reception unit 304 of the lower computer 30 (ijk) (step S105). The medium computer 20
Lower computer 30 (ij) connected to (ij)
1) to 30 (ijr) can receive the second restart command as in the first embodiment.

(2) Lower computer 30 (ijk)
Detects the restart of the middle computer 20 (ij) (step S131). This restart can be detected, for example, as follows.

Detection of Communication Abnormality with Middle Computer 20 (ij) In step S103, the middle computer 20 (i) is detected.
Since j) is restarting, a communication error occurs between the lower computer 30 (ijk) and the middle computer 20 (ij). That is, since the operation of the OS is temporarily stopped by the reboot in step S122 shown in FIG. 6, the middle-level computer 20 (ij) temporarily becomes unable to communicate with another computer.

This communication abnormality is detected, for example, when the lower computer 30 (ijk) is connected to the middle computer 20 (ijk).
j) can be called periodically to determine whether there is a response. That is, the middle computer 20 (ij)
If does not respond to the call, it is determined that the communication is abnormal.
Since the communication error due to the reboot is within a certain time, it is necessary to call the middle-level computer 20 (ij) periodically at intervals shorter than the communication error time (reboot time).

This determination may be made based on one non-response, but a communication abnormality may be determined based on a plurality of non-responses.

The detection of the communication abnormality is performed in step S1.
Since it is normal that the second restart command is received after the reception of the second restart command in step S05 (for example, it takes some time to save the backup data in step S121), the detection of the communication abnormality is performed in the second restart in step S105. It can also be started from the reception of the start command.

Notification of Reboot from Middle Computer 20 (ij) Since the middle computer 20 (ij) can communicate before and after the reboot in step S122, the start or end of the reboot is performed before and after the reboot. The notification can be sent to the lower-level computer 30 (ijk). The exchange of the notification information is performed by the transmission / reception units 205 and 304.

The lower-level computer 30 (ijk) can detect the restart of the middle-level computer 20 (ij) by receiving the notification of the start or end of the reboot from the middle-level computer 20 (ij).

(3) It is determined whether both the reception of the second restart command in step S105 and the detection of the first restart in step S131 have been performed (step S132). The restart computer 302 (ijk) is restarted by the restart execution unit 302 (step S106). Note that in some cases, only on the condition that the restart of step S131 is detected, the lower computer 30
(Ijk) can also be restarted.

In this modification, the lower computer 30
(Ijk) is restarted by the intermediate computer 20 (i
Since the restart is performed on condition that the restart of j) is detected, it is guaranteed that the restart is performed in the order of the middle computer 20 (ij) and the lower computer 30 (ijk).

A lower-level computer is connected to the lower-level computer 30 (ijk), and the lower-level computer 30 (ijk) is restarted.
jk) may be detected as a condition. In this case, the middle computer 20 (i
j), the lower-level computer 30 (ijk), and the lower-level computer, that is, the restart can be performed in order from the top to the bottom of the tree.

If the restart is performed at almost the same time in all the computers, the lower computer 30 (ij)
k) the medium computer 20 prior to the end of the restart
This means that the restart of (ij) has been completed. Then, the second restart completion information transmitted from the lower computer 30 (ijk) can be reliably received by the middle computer 20 (ij) in step S108.

(Modification 2 of First Embodiment) Next, a computer system according to a modification 2 of the first embodiment of the present invention will be described. The configuration of the computer system at this time is different from the first embodiment already described in the internal configuration of the middle-level computer 20 (ij).

FIG. 8 is a block diagram showing the internal configuration of the middle computer 20 (ij) in this modification.
As shown in FIG. 8, the middle computer 20 (ij)
Comprises a computer main body 200 (ij) and an auxiliary storage device 201 (ij) such as a hard disk, and the computer main body 200 (ij) further includes a first restart execution unit 20.
2. Second restart command unit 203, first restart notification unit 20
4, the transmission / reception unit 205 and the scheduler 210.

This modification differs from the first embodiment shown in FIG. 3 in that a scheduler 210 is added. The scheduler 210 issues a first restart command to the first restart execution unit. In other respects, this modified example has the same configuration as that of the first embodiment, and thus redundant description will be omitted.

FIG. 9 is a flowchart showing a restarting procedure in this modification. The operation in this modification is performed independently of the host computer 10 (i), and the host computer 10 in steps S101 and S111 shown in FIG.
The transmission of the first restart command and the reception of the first restart completion information according to (i) are not performed.

Hereinafter, steps S141 and S1 of this modified example will be described.
42 will be described. (1) Step S141 In step S141, the first restart instruction is the first
It is received by the restart execution unit 202.

Before this step, scheduler 2
10 issues a first restart command. That is, step S141 is apparently the same as step S102 in FIG. 5, but the reception in step S102 is performed by the transmission / reception unit 205 based on the inter-computer communication.
The reception in step S141 is inter-process communication in the same computer, and differs in that the transmission and reception unit 205 is not interposed.

(2) Step S142 In step S142, first restart completion information is transmitted to the scheduler 210. As a result, the scheduler 210 can receive the first restart completion information and confirm the completion of the restart.

The transmission in step S110 is performed by the transmission / reception unit 205 based on the inter-computer communication, whereas the transmission in step S142 in FIG. 5 is an inter-process communication in the same computer. Not through. In other respects, there is no particular difference from the first embodiment, and a duplicate description will be omitted.

(Second Embodiment) A computer system according to a second embodiment of the present invention will be described. The overall configuration of this embodiment is shown in FIG. 1 as in the first embodiment.

FIGS. 10 to 12 show the upper computer 10 (i), the middle computer 20 (ij), and the lower computer 30 (ijk) in this embodiment, respectively.
FIG. 3 is a block diagram illustrating an internal configuration of the device.

As shown in FIG. 10, the host computer 10 (i) comprises a computer main unit 100 (i) and an auxiliary storage device 101 (i) such as a hard disk, and the computer main unit 100 (i) further includes a scheduler 10 (i).
2. It comprises a first restart command unit 103, a transmitting / receiving unit 104, and a first execution start command unit 105.

The first execution start command unit 105 issues a first execution start command for instructing the middle-level computer 20 (ij) to execute a predetermined first program, and attaches data as necessary. Send. The other configuration is not particularly different from FIG. 2 in the first embodiment, and thus the duplicated description will be omitted.

As shown in FIG. 11, the middle-level computer 20 (ij) includes a computer main body 200 (ij) and an auxiliary storage device 201 (ij) such as a hard disk. Restart execution section 202, second restart instruction section 203, first restart notification section 204, transmission / reception section 205, first execution start section 20
6. Second execution start command unit 207, first execution start notification unit 2
08.

The first execution start unit 206 starts the execution of the first program in response to the first execution start command, and receives data as needed. The second execution start instruction unit 207 issues a second execution start instruction for instructing the lower-level computer 30 (ijk) to execute a predetermined second program, and sends data as needed, along with the data.
The first execution start notifying unit 208 notifies the host computer 10 (i) of the start of execution of the first program corresponding to the first execution start command. Otherwise, the first of FIG.
Since there is no particular difference from the embodiment, a duplicate description will be omitted.

As shown in FIG. 12, the lower computer 30 (ijk) is a computer main body 300 (ijk).
And an auxiliary storage device 301 (ijk) such as a hard disk. The computer main body 300 (ijk) further includes a second restart execution unit 302, a second restart notification unit 303, a transmission / reception unit 304, a second execution start unit 305, 2 is comprised of an execution start notifying unit 306.

The second execution start unit 305 starts execution of a predetermined second program in response to the second execution start command, and receives data as required. The second execution start notifying unit 306 determines that the execution of the second program corresponding to the second execution start command has been started by the middle computer 20 (i
j). In other respects, there is no particular difference from the first embodiment of FIG.

Next, the operation of the computer system according to the first embodiment will be described with reference to the drawings.
FIG. 13 is a flowchart showing a restart procedure of the computer system according to the second embodiment of the present invention. Hereinafter, the procedure of the operation of the computer system according to the present embodiment will be described in detail with reference to FIG.

Steps S201 to S211 are respectively
Steps S101 to S11 of the first embodiment shown in FIG.
In order to correspond to 1, the duplicate description is omitted, and step S
Steps after 212 will be described. (1) Upper computer 10 in step S211
In response to the reception of the first restart information from the middle computer 20 (ij) by (i), the upper computer 1
From 0 (i), a first execution start instruction for instructing execution of a predetermined first program is transmitted to the intermediate computer 20 (ij) (S212).

At this time, accompanying the first execution start command,
Information necessary for operating the first program (in some cases, all or part of the first program, or data such as predetermined parameters) can be transmitted as necessary.

This first execution start command is issued to scheduler 1
02 is issued from the first execution start command unit 105 in response to the instruction 02, and transmitted from the transmission / reception unit 104. The first execution start command may instruct all of the middle-level computers 20 (i1) to 20 (iq) connected to the higher-level computer 10 (i) to execute the same program. May instruct each of the computers 20 (i1) to 20 (iq) to execute a different program.

In step S212, step S2
The restart of the middle computer 20 (ij) in 03 has been completed. Various states can be considered as the state where step S203 is completed. For example, a state in which only the OS operates and the first program does not operate, a state in which the first program operates when predetermined data is received, or a state in which the second program different from the first program operates It is possible that you are doing it. This differs depending on the designation of a program to be automatically operated at the time of restart in step 203.

Accordingly, it is necessary to change the content of the first execution start command in step S212 according to the operation state of the middle-level computer 20 (ij) at the time of restart in step S203.

Note that the content of a second execution start command described later can be transmitted together with the first execution start command. By doing so, the host computer 10 (i)
Accordingly, it is possible to determine not only the operation state of the middle computer 20 (ij) but also the operation state of the lower computer 30 (ijk) which is not directly connected to the upper computer 10 (i). However, step S20
3 is completed, the middle computer 20
It goes without saying that (ij) needs to be in a kind of standby state.

(2) The first execution start command transmitted from the host computer 10 (i) is received by the transmission / reception unit 205 of the middle computer 20 (ij) (step S213). Here, FIG. 13 shows only reception by the middle-level computer 20 (ij), but actually, the middle-level computers 20 (i1) to 20 (iq) connected to the higher-level computer 10 (i). ) Can receive the first restart command.

(3) Based on the received first execution start command, the execution of the first program is started by the first execution start unit 206 (step S214). This execution can be started simultaneously by all of the middle-level computers 20 (i1) to 20 (iq) that have received the first execution start command, but the execution of the same program is necessarily started by all of them. Need not be.

(4) Second execution for instructing lower-level computer 30 (ijk) to start execution of a predetermined second program by second execution start instruction unit 207 based on the received first execution start instruction. A start command is issued and this second
Is transmitted from the transmission / reception unit 205 (step S215).

The contents of the second execution start command may be stored in the middle-level computer 20 (ij),
As described above, the data may be transmitted from the host computer 10 (i) together with the first execution start command. Note that the content of the second execution start command may be the same as or different from the content of the first execution start command.

(5) The second execution start command transmitted from the middle computer 20 (ij) is received by the transmission / reception unit 304 of the lower computer 30 (ijk) (step SS216). In addition, the middle computer 2
0 (ij) connected to the lower computer 30 (ij
All of 1) to 30 (ijr) can receive the second execution start command.

(6) Based on the received second execution start command, the execution of the second program is started by the second execution start unit 305 (step S217). Note that this execution can be started simultaneously by all of the lower computers 30 (ij1) to 30 (ijr) that have received the second execution start command, but the execution of the same program is not necessarily started by all of them. No need to be done.

As a result, the host computer 10 (i)
Transmission of the first execution start command from the central computer 20 connected directly to the upper computer
In addition to the start of execution of the first program in (ij),
The lower computer 30 (ijk) indirectly connected to the upper computer 10 (i) can also start executing the second program.

It is also possible to connect a lower-order computer by a lower layer of the lower-order computer 30 (ijk), and the lower-order computer 30 further has a third execution start command section corresponding to the second execution start command section 207. In this way, the execution start command from the higher-level computer 10 (i) is transmitted in the order of the middle-level computer 20 (ij), the lower-level computer 30 (ijk), and the lower-level computer. At any stage, the execution of the program can be started on all computers connected to the tree by a single execution start command.

As described above, by transmitting the second or third execution start command accompanying the first execution start command transmitted from the host computer 10 (i),
The operating states of all the computers directly or indirectly connected to the host computer 10 (i) can be determined.

(7) Lower computer 30 (ijk)
When the execution of the second program is started, the second execution start information for notifying the middle computer 20 (ij) of the start of the execution of the second program is issued from the second execution start notifying unit 306. . The second execution start information is transmitted to the middle computer 20 via the transmission / reception unit 304.
(Ij) (step S218).

The transmission of the second execution start information is as follows.
Not only the computer 30 (ijk) but also the lower computer 3 connected to the middle computer 20 (ij)
Data can be transmitted from all of 0 (ij1) to 30 (ijr).

(8) Lower computer 30 (ijk)
Is received by the transmission / reception unit 205 of the middle-level computer 20 (ij) (step S219). The medium computer 20
(Ij) is the lower computers 30 (ij1) to 30
All of the second restart completion information transmitted from (ijr) can be received.

(9) Start of execution of the first program (step S214) and the lower computer 30 (ijk)
Of the second execution start information from the server (step S219)
(Step S22)
0).

Then, when both are performed,
First execution start information for notifying the start of execution of the first program in the middle-level computer 20 (ij) is issued from the first execution start notifying unit 208. The first execution start information is transmitted from the transmission / reception unit 205 to the host computer 10.
It is transmitted to (i) (step S221).

Here, in step S219, the second execution start information can be received from all of the lower-level computers 30 (ij1) to 30 (ijr). The condition may be that all the restart completion information has been received. The transmission in step S221 can also be performed without causing the execution start in step S214 to be a problem.

At this time, the first execution start information transmitted in step S221 is stored in the middle computer 20 (i
j) as well as lower computers 30 (ij1) to 30 (i) connected to the middle computer 20 (ij).
jr) means that the execution of the program has started.

(10) Host computer 10 (i)
Receives the first execution start information transmitted from the intermediate computer 20 (ij) by the transmission / reception unit 104 (S
222). The received first execution start information is sent to the scheduler 102 and interpreted as the start of execution of the program in the middle computer 20 (ij) and the lower computer 30 (ijk). 1 is transmitted.

The transmission of the first execution start information in step S221 is performed by the middle computers 20 (ij1) to 20 (ij) connected to the upper computer 10 (i).
q). Accordingly, when the first execution start information is received from all of these middle-level computers 20 (ij1) to 20 (ijq), the middle-level computers connected to the upper-level computer 10 (i) in a tree shape 20, it can be determined that the execution of the program has started in all of the lower-level computers 30.

(Modification of Second Embodiment) Steps S131 and S132 shown in FIG. 7 as a first modification of the first embodiment are added to the operation procedure of the second embodiment of FIG.
Modifications can be configured. That is, in the present modification, the restart of the lower-level computer 30 (ijk) by the second restart execution unit 302 is performed by restarting the middle-level computer 20 (ijk) in addition to receiving the second restart command. The difference from the second embodiment is that detection is performed on condition.

In the present embodiment, a first modification of the first embodiment is described.
As described above, the restart is more reliably performed in order from the top of the tree to the bottom. As a result, the reception of the second restart completion information in step 208 can be performed more reliably. Since the details of the operation at this time are the same as those of the first modification of the first embodiment, the detailed description is omitted.

(Third Embodiment) In the first and second embodiments, the computer was restarted. However, it is also possible to stop the computer instead of restarting it. It will be described as. Note that the third embodiment is similar to the first embodiment.
This corresponds to the first half of the restart of FIG. 5 described in the embodiment. The overall configuration of the computer system at this time is
The configuration shown in FIG. 1 similar to the first embodiment may be used.

FIG. 14 is a flowchart showing the procedure of the operation of the computer system according to the third embodiment. Hereinafter, the computer according to the third embodiment will be described with reference to FIG.
The detailed procedure of the operation of the system will be described.

(1) A first stop command for stopping the middle computer 20 (ij) is transmitted from the upper computer 10 (i) to the middle computer 20 (ij) (step). S301). The transmission of the first stop command is performed by the scheduler 1 of the computer 10 (i).
02, and is transmitted by the transmission / reception unit 104 via the network 40 (i).

(2) The first stop command transmitted from the host computer 10 (i) is
(Ij) is received by the transmission / reception unit 205 (step S302). Note that middle computers 20 (i1) to 20 (i) connected to the upper computer 10 (i).
All of q) can receive the first stop command.

(3) Based on the received first stop command,
The backup data in the memory of the computer 20 (ij) is saved (step S303) and stopped (step S304). This stop is performed by the intermediate computers 20 (i1) to 20 (i) receiving the first stop command.
q) can be performed simultaneously.

(4) Based on the received first stop command,
A second stop command is issued to the computer 30 (ijk) and transmitted from the transmitting / receiving unit 205 (step S
305). This transmission must be performed before the computer 20 (ij) is stopped in step S304.

(5) The second stop command transmitted from the middle computer 20 (ij) is
0 (ijk) is received by the transmitting / receiving section 304 (step S306). Note that the middle computer 20 (i
j) connected to lower computers 30 (ij1) to
All 30 (ijr) can receive the second stop command.

(6) Based on the received second stop command,
The backup data in the memory of the lower-level computer 30 (ijk) is saved (step S307), and the subsequent stop is performed (step S308). This stop is performed by the lower computer 30 (ij) that has received the second stop command.
1) to 30 (ijr) can be performed simultaneously.

That is, the transmission of the first stop command from the host computer 10 (i) causes the host computer 1 (i) to send the first stop command.
0 (ij), a medium computer 2 directly connected to
Not only 0 (ij), but also the indirectly connected lower-level computer 30 (ijk) can be stopped.

(Fourth Embodiment) As a fourth embodiment,
An example in which a computer is started in a computer system will be described. The fourth embodiment corresponds to the latter half of the restart of FIG. 5 described in the first embodiment. At this time, the entire configuration of the computer system may be the same as that of the first embodiment shown in FIG.

FIG. 15 is a flowchart showing a procedure for stopping the computer system according to the fourth embodiment. Less than,
The procedure of the startup operation of the computer system according to the fourth embodiment will be described in detail with reference to FIG.

(1) Medium-level computer 20 (ij)
The lower computers 30 (ijk) are activated (steps S401 and S402). This invocation
For example, this can be performed by pressing the start buttons of the middle computer 20 (ij) and the lower computer 30 (ijk).

(2) The backup data stored on the auxiliary storage device 201 (ij) is
0 (ij) is read into the storage device (memory) (step S403). Similarly, the auxiliary storage device 30
1 (ijk) is read into the storage device (memory) of the lower computer 30 (ijk) (step S404). A program that operates automatically immediately after the computer is started can be specified in advance, and the reading process can be performed by the specified program.

(3) Lower-level computer 30 (ijk)
Is completed, the lower computer 30 (ij
k) The second start-up completion information for notifying the completion of the start-up is issued.
(Ij) (step S405). The transmission of the second restart completion information is performed by the lower computer 30 (i) connected to the intermediate computer 20 (ij).
j1) to 30 (ijr).

(4) Lower-level computer 30 (ijk)
Is received by the transmission / reception unit 205 of the middle computer 20 (ij) (step S406). The medium computer 20
(Ij) is the lower computers 30 (ij1) to 30
All of the second activation completion information transmitted from (ijr) can be received.

(5) It is determined whether both the completion of the activation of the middle-level computer 20 (ij) and the reception of the second activation completion information from the lower-level computer 30 (ijk) are performed in step S403. (Step S407). Then, when both are performed, the first boot completion information for notifying the completion of the restart of the middle-level computer 20 (ij) is issued, and transmitted from the transmitting / receiving unit 205 to the higher-level computer 10 (i). Is performed (step S408).

Here, the middle computer 20 (ij)
Computers 30 (ij1) to 30 connected to
The reception of the second activation completion information from all of (ijr) can be used as the determination condition in step S407. At this time, the first activation completion information transmitted in step S408 includes the middle computer 20 (ij) and the lower computers 30 (ij1) to 30 (ijr) connected to the middle computer 20 (ij). Means that all startups have been completed.

(6) The host computer 10 (i)
The first activation information transmitted from the middle-level computer 20 (ij) is received by the transmission / reception unit 104 (S409).
The transmission of the first activation completion information in step S408 can be performed from all of the middle computers 20 (i1) to 20 (iq) connected to the higher computer 10 (i). Accordingly, these intermediate computers 20 (i1) to
When the first boot completion information is received from all of the computers 20 (iq), the activation of all of the middle computer 20 and the lower computer 30 connected in a tree to the upper computer 10 (i) is completed. You can judge that it was done.

(Fifth Embodiment) As a fifth embodiment,
An example in which a partial function of a computer is initialized in a computer system will be described. For example, a control computer using a dedicated OS may not require a restart,
In this case, it is sufficient to partially initialize the functions as needed.

At this time, the entire configuration of the computer system may be the same as that of the first embodiment shown in FIG. 1, but other configurations can be adopted. FIG. 16 is a block diagram showing another example of the overall configuration of the computer system. As shown in FIG. 16, a lower computer 70 is connected to a higher computer 60 via a network 80. Here, the difference from FIG. 1 is that a plurality of upper computers are connected to each of the lower computers 70.

Each of the upper computer 60 and the lower computer 70 is, for example, a personal computer (PC), a workstation (WS), or, in some cases, a control computer. The network 80 is a LAN (Lo)
cal Area Network), WAN (Wid)
e Area Network), and the line used for this may include both a dedicated line and a general line.

The upper computer 60 includes computers 60 (1) to 60 (p) and a plurality of computers, and the upper computers 60 (i (1)) to 6 (p)
0 (i (n)) is connected to the network 80 (i).

As a result, the host computer 60 (i
(1)) to 60 (i (n)) are connected to lower computers 70 (i1) to 70 (iq). That is, the connection between the computers in FIG. 16 is different from the one-to-plural tree structure shown in FIG. 1, and the upper and lower hierarchies are connected in a plural-to-plural relationship.

The computer system shown in FIG. 16 is composed of a high-order computer 60 and a low-order computer 70 in two stages. However, the number of stages may be three or more in some cases. FIG. 16 shows only the lower computers 70 (i1) to 70 (iq) connected to the upper computer 60 (i) and the network 80 (i) among the lower computers 70.

FIG. 17 is a block diagram showing a procedure for initializing a partial function in the fifth embodiment. Hereinafter, the operation procedure of the computer system according to the fifth embodiment will be described in detail with reference to FIG. (1) A first partial function initialization command for instructing execution of partial function initialization is transmitted from the upper computer 60 (i (1)) to the lower computer 70 (ij) (step S501). .

The transmission of the first partial function initialization command is as follows.
For example, it is issued based on an instruction from the scheduler of the computer 60 (i (1)), and is transmitted to the network 80 (i) via the transmission / reception unit.

This partial function initialization command can be transmitted by each of the upper computers 60 (i (1)) to 60 (i (n)). For this reason, the lower computer 70 (ij) is connected to the upper computer 60 (i).
(1)) It is possible to receive a partial function initialization command from each of (i (n)). It is sufficient if the initialization of the partial function is performed a plurality of times. In some cases, upper computers 60 (i (1)) to 60 (i (1))
For each (n)), the initialization target function of the lower computer 70 (ij) in the partial function initialization command can be classified.

(2) The host computer 60 (i
The partial function initialization command transmitted from (1)) is received by the transmission / reception unit of the lower computer 70 (ij) (step S502). Here, the lower computer 70 (ij) can receive different partial function initialization commands from each of the upper computers 60 (i (1)) to 60 (i (n)) as described above. It is.
In addition, all of the lower computers 70 (i1) to 70 (iq) connected to the upper computer 60 (i (1)) can receive the partial function initialization command.

(3) Based on the received partial function initialization command, the partial function initialization of the computer 70 (ij) is performed (step S503). This restart is performed by the lower-level computers 70 (i1) -70 that have received the partial function initialization command.
70 (iq) can be performed simultaneously. The partial function initialization in step S503 is performed by stopping and resuming a process that manages a certain function (for example, closing or opening a communication function) to execute a function of a computer (for example, a communication function).
Is performed. As a result, some of the processes running on the lower-level computer 70 (ij) are returned to the same operating state as when they were restarted. That is, a part of the storage content on the storage device (memory) of the computer 70 (ij) is in the same state as immediately after startup.

If a partial function initialization command is issued from each of the host computer 60 (i (1)) and the like,
Partial function initialization is performed corresponding to each partial function initialization command.

The partial function initialization in step S503 is as follows.
In addition to receiving the partial function initialization command in step 502, receiving the self-initialization command issued by the scheduler of the computer 70 (ij) (step S504), and receiving the manual initialization command issued manually by the user (step S505) ) May be performed (step S506).

In addition, based on the received partial function initialization command, a second partial function initialization command is transmitted to a computer further connected to the computer 70 (ij).
It is also possible to perform the partial function initialization of the lower computer.

(4) When the partial function initialization is completed in step S503, partial function initialization completion information for notifying the completion of the partial function initialization is issued, and the computer 70 (i)
j) from the transmission / reception unit to the host computer 60 (i
(1)) (Step S507). If the partial function initialization is performed based on the partial function initialization command transmitted from each of the higher-level computers 60 (i (1)) to 60 (i (n)), the respective computers 60 (i (1 ()) The partial function initialization completion information is transmitted to 1)) and the like.

(5) The host computer 60 (i
(1)) The partial function initialization completion information transmitted from the lower-level computer 70 (ij) is received by the transmission / reception unit (S508). The received partial function initialization completion information is sent to the scheduler of the higher-level computer 60 (i (1)), and is determined as the completion of the partial function initialization of the lower-level computer 70 (ij).
01 is repeatedly transmitted.

Lower computers 70 (ij1) to 70 (ij1) to 70
When the partial function initialization completion information is received from all of (ijq), the host computer 60 (i
It can be determined that the lower-level computers 70 (ij1) to 70 (ijq) have completed the partial function initialization based on the instruction of (1)).

(Other Embodiments) The embodiments of the present invention can be expanded and changed, and the expanded and changed embodiments are also included in the technical scope of the present invention. The present invention can be applied not only to a control computer system but also to computer systems generally connected via a wide network, and the hierarchy of computers is not limited to two or three levels.

In the first to fourth embodiments, the hierarchy of computers has a tree structure. However, if a command from a higher-level computer does not collide with a lower-level computer (or there is no problem if a collision occurs). If not, a multiple-to-multiple connection configuration as in the fifth embodiment may be adopted.

In the above embodiment, the hierarchy of the computer system is divided into different networks, but these networks may be the same network. That is, the hierarchy of the computer system can be configured only by software without depending on hardware. This is because the hierarchy of the computer system is determined by the flow of the command system, and this hierarchy can be determined, for example, by the flow of the restart command at the time of restart.

Furthermore, the embodiments can be combined with each other, and for example, a computer system capable of selecting and executing either restart or partial function initialization can be configured.

[0167]

As described above, according to the present invention, the computer constituting the computer system can be easily restarted.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an overall configuration of a computer system according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating an internal configuration of a host computer that forms the computer system according to the first embodiment.

FIG. 3 is a block diagram illustrating an internal configuration of a middle-level computer constituting the computer system according to the first embodiment.

FIG. 4 is a block diagram illustrating an internal configuration of a lower-level computer included in the computer system according to the first embodiment.

FIG. 5 is a flowchart illustrating a restart procedure of the computer system according to the first embodiment.

FIG. 6 is a flowchart further dividing the restart execution step of FIG. 5;

FIG. 7 is a flowchart illustrating a restart procedure of the computer system according to Modification 1 of the first embodiment.

FIG. 8 is a block diagram illustrating an internal configuration of a middle-level computer included in a computer system according to Modification 2 of the first embodiment.

FIG. 9 is a flowchart illustrating a restart procedure of the computer system according to Modification 2 of the first embodiment.

FIG. 10 is a block diagram illustrating an internal configuration of a host computer that forms a computer system according to a second embodiment of the present invention.

FIG. 11 is a block diagram illustrating an internal configuration of a middle-level computer constituting a computer system according to a second embodiment of the present invention.

FIG. 12 is a block diagram illustrating an internal configuration of a lower-level computer constituting a computer system according to a second embodiment of the present invention.

FIG. 13 is a flowchart illustrating a restart procedure of the computer system according to the second embodiment of the present invention.

FIG. 14 is a flowchart showing a stop procedure of a computer system according to a third embodiment of the present invention.

FIG. 15 is a flowchart illustrating a startup procedure of a computer system according to a fourth embodiment of the present invention.

FIG. 16 is a block diagram illustrating an overall configuration of a computer system according to a fifth embodiment of the present invention.

FIG. 17 is a flowchart illustrating a partial function initialization procedure of the computer system according to the fifth embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 upper computer 20 middle computer 30 lower computer 40 network 50 network 60 upper computer 70 lower computer 80 network 100 computer main body 101 auxiliary storage device 102 scheduler 103 first restart command unit 104 transmission / reception unit 105 first execution Start command unit 200 Computer main unit 201 Auxiliary storage device 202 First restart execution unit 203 Second restart command unit 204 First restart notification unit 205 Transmission / reception unit 206 First execution start unit 207 Second execution start command unit 208 First Execution start notification unit 210 Scheduler 300 Computer main body 301 Auxiliary storage device 302 Second restart execution unit 303 Second restart notification unit 304 Transmitter / receiver unit 305 Second execution start unit 306 Second execution start notification unit

 ──────────────────────────────────────────────────の Continuation of the front page (54) [Title of Invention] Computer restart method, computer partial function initialization method, computer stop method, computer start method, computer with restart function, partial function initialization Computer with function, computer with stop function, computer with start function, computer system with restart function, and recording medium

Claims (22)

[Claims] A first restart command receiving step for receiving a first restart command for instructing a restart of the first computer, wherein the first computer receives the first restart command; A first restart execution step in which the first computer that has received the first restart instruction executes the restart, and the first computer restarted in the first restart execution step includes the first restart A first restart completion information transmitting step of transmitting first restart completion information notifying the completion of the restart of the computer. 2. The first reboot execution step includes a data storage step of saving backup data stored in a memory of the first computer; a reboot execution step of rebooting an operating system; 2. The computer restart method according to claim 1, further comprising a data reading step of reading the backup data stored in the storage step into the memory. 3. The first computer, which has received the first restart command in the first restart command receiving step, issues a second restart command for commanding a restart of a second computer. A second restart command transmitting step of transmitting the second restart command to the second computer, and the first computer transmitting the second restart command in the second restart command transmitting step transmits a restart of the second computer. 2. The computer restart method according to claim 1, further comprising a second restart completion information receiving step of receiving second restart completion information notifying completion from the second computer. 4. A second restart command receiving step in which the second computer receives the second restart command transmitted in the second restart command transmitting step; and a second restart command receiving step. 4. The computer restart method according to claim 3, further comprising: a second restart execution step of executing the restart by the second computer having received the second restart command in step. . 5. The computer according to claim 4, wherein the second computer executes the restart in the second restart execution step on condition that the restart of the first computer is detected. How to execute restart. 6. The method according to claim 6, wherein the first computer is configured to restart the second computer from the second computer having received the second restart command transmitted in the second restart command transmitting step. And a second restart completion information receiving step of receiving second restart completion information notifying completion of the second restart completion information, wherein the second restart completion information receiving step receives the second restart completion information in the second restart completion information receiving step. 4. The computer restart method according to claim 3, further comprising transmitting the first restart completion information in the first restart completion information transmitting step. 7. A first restart command transmitting step, in which a third computer transmits the first restart command, preceding the first restart command receiving step; and the first restart completion information. 2. The computer according to claim 1, further comprising: a first restart completion information receiving step in which the third computer receives the first restart completion information, after the transmitting step. How to restart. 8. A first restart command transmitting step in which the scheduler of the first computer transmits the first restart command, which is provided before the first restart command receiving step; The computer according to claim 1, further comprising: a first restart completion information receiving step in which the scheduler receives the first restart completion information, which is provided after the start completion information transmitting step. How to restart. 9. A first restart command receiving step in which a first computer receives a first restart command for instructing a restart of the first computer; and the first restart command receiving step includes: A first restart execution step in which the first computer that has received the first restart instruction executes the restart, and the first computer restarted in the first restart execution step includes the first restart A first restart completion information transmitting step of transmitting first restart completion information notifying the completion of the restart of the computer, and transmitting the first restart completion information in the first restart completion information transmitting step. A first execution start command receiving step of receiving a first execution start command for instructing the first computer to start execution of a first program; The first computer receiving the first execution start command at a start command reception step, the first
A first execution start step of starting execution of the first program; and a first computer that starts execution of the first program in the first execution start step notifies the start of execution of the first program. A first execution start information transmitting step of transmitting the first execution start information. 10. The second computer, which has received the first execution start command in the first restart command receiving step, instructs a second computer to start execution of a second program. Transmitting a second execution start command to the second computer, and transmitting the second execution start command in the second execution start command transmission step, the first computer 2
A second execution start information receiving step of receiving, from the second computer, second execution start information notifying that the second program has been started to be executed by the second computer. The second execution start information receiving step 10. The computer restart method according to claim 9, wherein the first execution start information is transmitted in the first execution start information transmitting step, on condition that the second execution start information is received in step (a). 11. A partial function initialization command receiving step in which a computer receives a partial function initialization command for instructing a partial initialization of a function of the computer, and the partial function initialization command receiving step includes: The computer that has received the initialization command executes a partial function initialization execution step of executing the initialization of a partial function of the computer, and the computer that has executed the initialization of the partial function by the partial function initialization execution step includes: A partial function initialization completion information transmitting step of transmitting partial function initialization completion information for notifying completion of function initialization. 12. A first stop command receiving step in which a first computer receives a first stop command for stopping the operation of the first computer, and the first stop command receiving step includes the step of receiving the first stop command. A second stop command transmitting step in which the first computer that has received the stop command transmits a second stop command for instructing a stop of the operation of the second computer; A stopping step in which the first computer that has transmitted the stop command is stopped. 13. A first booting step in which a first computer boots up, and the first computer that has completed booting up in the booting step notifies the second computer of the completion of booting up the second computer. A second boot completion information receiving step of receiving second boot completion information; and the first computer having received the second boot completion information in the second boot completion information receiving step includes the first computer A first boot completion information transmitting step of transmitting first boot completion information for notifying the completion of booting. 14. A first command for restarting a computer.
A first restart execution unit that executes a restart in response to the restart command of the first computer, and issues a second restart command that instructs a restart of the second computer in response to the first restart command. A second restart command unit; and a first restart notification unit for issuing first restart completion information for notifying completion of the first restart by the first restart execution unit. A computer with a restart function. 15. A first command for restarting a computer.
A first restart execution unit that executes a restart in response to the restart instruction of the first step, and a second restart instruction that issues a second restart instruction that instructs a restart of the second computer based on the first restart instruction. (2) a restart command unit, a first restart completion notifying unit for issuing first restart completion information for notifying the completion of restart by the first restart execution unit, and a command for starting execution of the first program. A first execution start unit that starts the execution of the first program in response to receiving the first execution start command to be executed, and notifies the first execution start unit of the start of the execution of the first program. A computer with a restart function, comprising: a first execution start notifying unit that issues first execution start information. 16. A partial function initialization execution unit that executes partial function initialization in response to receiving a partial function initialization command that instructs a partial initialization of a function of a computer, and said partial function initialization. A computer with a partial function initialization function, comprising: a partial function initialization completion notification unit that issues partial function initialization completion information for notifying the completion of the initialization of the partial function by the execution unit. 17. A first stop execution unit for stopping a computer in response to receiving a first stop command for instructing stop of a computer, and a second stop in response to receiving the first stop command. And a second stop command unit for issuing a second stop command for commanding the computer to stop. 18. A method according to claim 18, further comprising: a first boot execution unit configured to start up the computer; and a first boot execution unit configured to receive the second boot completion information for notifying completion of booting up the second computer. And a first boot completion notifying unit for issuing first boot completion information for notifying completion. 19. A computer system having a restart function, comprising a first computer and a second computer, wherein the first computer issues a first command to restart the first computer. A first restart execution unit for executing a restart of the first computer in response to a restart instruction, and a second restart for instructing a restart of the second computer based on the first restart instruction A second restart command unit for issuing a start command, wherein the second computer is configured to operate the second computer in response to the second restart command issued from the second restart command unit. A computer system with a restart function, comprising: a second restart execution unit for executing a restart. 20. A computer system having a restart function, comprising a first computer and a second computer, wherein the first computer issues a first command to restart the first computer. A first restart execution unit for executing a restart of the first computer in response to a restart instruction, and a second restart for instructing a restart of the second computer based on the first restart instruction A second restart command unit for issuing a start command, a first restart notification unit for issuing first restart completion information for notifying completion of restart of the first computer by the first restart execution unit; A first execution start unit that starts execution of the first program in response to a first execution start command that instructs start of execution of the first program;
In response to the execution start command of the second computer.
A second execution start command unit for issuing a second execution start command for instructing the start of the execution of the program. The second computer executes the second restart command issued by the second restart command unit. A second restart execution unit that executes the restart of the second computer in response to the start command, and a second restart unit that notifies completion of the restart of the second computer by the second restart execution unit. A second restart notification unit for issuing start completion information, and a second execution start unit for starting execution of the second program in response to the second execution start command issued by the second execution start command unit. A computer system with a restart function, comprising: 21. A computer restart method according to claim 1 or 9, a computer partial function initialization method according to claim 11, a computer stop method according to claim 12, and a computer according to claim 13. Recording medium for recording a program for causing a computer to execute a procedure according to any one of the activation methods. 22. A computer with a restart function according to claim 14 or 15, a computer with a partial function initialization function according to claim 16, a computer with a stop function according to claim 17, and a computer with a stop function according to claim 18. A recording medium on which a program for causing a computer to function as any one of the computers having a boot function is recorded.