JP2001175367A - Shutdown control method and shutdown control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a proper completion processing in a computer system with plural UPSs(uninterruptible power supply). SOLUTION: When an abnormality of a commercial power source AC 1 is detected by a UPS 5 for CP(computer) 1, an abnormality detection signal ALM 1 is given to a shutdown control system 10. Power supply information 12c of a memory 12 is referred to, a related device is specified by a CP 1 and a shutdown signal SD 1 to the CP 1 is outputted. On the other hand, when an abnormality of a commercial power source AC 4 is detected by a UPS 8 for a HD(hard disk) 4, the abnormality detection signal ALM 4 is given to the shutdown control system 10. The power supply information 12c, file information 12d and work processing information 12e of the memory 12 are referred to, related devices are specified by CPs 1, 2 and shutdown signals SD 1, SD 2 to perform the completion processing are outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutdown control method and a shutdown control system in which a battery is switched to a computer in the event of an abnormality in a commercial power supply or the like and the computer is terminated.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional uninterruptible power supply (hereinafter, referred to as an uninterruptible power supply).
1 is a configuration diagram illustrating an example of a computer system using “UPS”. This computer system
Independent computers (hereinafter referred to as “CP”) 1 and 2
And hard disk devices (hereinafter, referred to as “HD”) 3 and 4 shared by these CPs 1 and 2.
CP1, CP2 and HD3, 4 have UPS5, respectively.
Electric powers PW1 to PW4 are supplied via 6, 7, and 8. UPSs 5 to 8 are supplied with commercial power supplies AC1 to AC4 during normal times.
And the commercial power sources AC1 to AC4
A power failure, an abnormal voltage, and the like, an inverter that generates an AC voltage from a battery when the commercial power supply AC1 to AC4 is abnormal, and an inverter output from the commercial power supply AC1 to AC4 when an abnormality occurs, and the power PW1 to the CP1 or the like. ~
It is composed of a switching unit for supplying PW4.

Further, the UPSs 5 and 6 detect abnormality of the commercial power supplies AC1 and AC2, respectively, and notify the CPs 1 and 2 of an abnormality detection signal ALM1 which notifies the switching to the battery side.
It has the function of outputting ALM2. This is UPS
There is a limit to the time during which power can be supplied to the CPs 1 and 2 due to the capacity of the batteries of the CPs 5 and 6, so that the CPs 1 and 2 perform emergency processing for abnormalities in the commercial power supplies AC1 and AC2.

In such a computer system, for example, if an abnormality occurs in the commercial power supply AC1 that supplies the power PW1 to the CP1 via the UPS 5, this U1
In PS5, the power supply is switched from the commercial power supply AC1 to the battery side, and the supply of power PW1 to CP1 is continued. At the same time, the UPS 5 outputs an abnormality detection signal ALM1 to CP1. In CP1,
When the abnormality detection signal ALM1 is received, the data being processed by the currently executed business programs PA and PB are protected from being destroyed, and the business programs PA and PB are protected.
Termination processing for forcibly stopping PB (shutdown)
Is performed. This protects data in progress,
When the abnormality of the commercial power supply AC1 is resolved, the CP1 can be restarted from a normal state.

[0005]

However, the conventional computer system using the UPS has the following problems. For example, H shared by CPs 1 and 2
When an abnormality occurs in the commercial power supply AC4 of D4 and the UPS 8 is switched to the battery side, the abnormality detection signal ALM cannot be transmitted to these CP1 and CP2. Therefore, if the abnormal state continues for a long time, the supply of the power PW4 may be stopped due to a shortage of the battery capacity while the CPs 1 and 2 are accessing the HD 4, and the HD 4 may be stopped. In such a case, there is a risk that the contents of the HD 4 will be destroyed.

The present invention solves the problems of the prior art, and provides a shutdown control method and a shutdown control system capable of performing appropriate termination processing in a computer system having a plurality of UPSs. is there.

[0007]

Means for Solving the Problems In order to solve the above problems, a first aspect of the present invention is to provide a plurality of independent CPs,
In a computer system having an external storage device shared by the CP and a plurality of UPSs individually provided to supply power to the CP and the external storage device, a business program of the CP corresponding to an abnormality of commercial power is provided. The shutdown control method for controlling the end processing is performed by the following processing.

That is, an abnormality monitoring process for monitoring an abnormality detection signal output from a plurality of UPSs when a commercial power supply is abnormal, and a CP or an external storage receiving power from the UPS to which the abnormality detection signal is output. An abnormality specifying process for specifying an apparatus, and a business program corresponding to a file stored in the external storage device by referring to management information registered in advance when the abnormality detection signal is output from the UPS for the external storage device And a CP specifying process for specifying the CP executing the business program searched in the business search process with reference to the management information. Further, when the abnormality detection signal is output from the CP UPS, the corresponding CP is instructed to stop, and when the abnormality detection signal is output from the external storage device UPS, the stop is specified by the CP specification processing. A stop instruction process for instructing the executed CP to stop the business program searched in the business search process is performed.

According to a second aspect of the present invention, in a computer system similar to the first aspect, a shutdown control system for controlling the end processing of a business program of a CP corresponding to an abnormality of commercial power supply as follows. .

That is, the shutdown control system receives input of an abnormality detection signal output from a plurality of UPSs when a commercial power supply is abnormal, and receives power supply from the corresponding UPS based on the abnormality detection signal. Abnormality specifying means for specifying a CP or an external storage device which is operating, and when the abnormality detection signal is output from the UPS for the external storage device, the abnormality detection signal is stored in the external storage device by referring to management information registered in advance. And a CP specifying unit that specifies a CP executing the searched business program by referring to the management information. Further, in this shutdown control system, when the abnormality detection signal is C
When output from the UPS for P, the corresponding CP is instructed to stop, and the abnormality detection signal is transmitted to the U for the external storage device.
Stop instruction means for instructing the specified CP to stop the searched business program when output from the PS is provided.

According to the present invention, since the shutdown control method and the shutdown control system are configured as described above, the following operations are performed. The statuses of the plurality of UPSs are monitored, and when an abnormality detection signal is output when the commercial power supply is abnormal, the CP or external storage device to which the UPS that has output the abnormality detection signal is specified is specified. If the power supply destination is a CP, a stop instruction is issued to the corresponding CP. If the power supply destination is an external storage device, management information registered in advance is referred to, a business program corresponding to a file stored in the external storage device is searched, and the business program is further executed. CP
Is specified. Then, an instruction to stop the searched business program is issued to the specified CP.

[0012]

FIG. 1 is a block diagram of a computer system having a shutdown control system according to an embodiment of the present invention. Elements common to those in FIG. 2 are denoted by the same reference numerals. I have.

This computer system has an independent C
P1 and P2 and external storage devices (for example, HD) 3 and 4 shared by these CP1 and CP2. CP
Electric powers PW to PW4 are supplied to 1, 2 and HDs 3 and 4 via UPSs 5 to 8, respectively. UPS5-8
Is a battery that is normally charged by the commercial power supplies AC1 to AC4, a detection unit that detects a power failure or abnormal voltage or the like of the commercial power supplies AC1 to AC4,
And an inverter that generates an AC voltage from the battery when an abnormality occurs, and a switching unit that switches from the commercial power supply AC1 to AC4 to an inverter output and supplies electric power PW1 to PW4 to the CP1 to CP4 when an abnormality occurs. Furthermore, UPS5-8
Is an abnormality detection signal A that detects abnormality of the commercial power supplies AC1 to AC4 and notifies that the power supply has been switched to the battery side.
It has a function of outputting LM1 to ALM4. on the other hand,
CP1 and CP2 have terminals to which shutdown signals SD1 and SD2 for starting the end processing are input.

This computer system comprises a commercial power supply A
A shutdown control system 10 is provided for performing appropriate termination processing of CPs 1 and 2 when C1 to AC4 are abnormal. The shutdown control system 10 includes a central processing unit (hereinafter, referred to as a “CPU”) 11, a memory 12 for storing a control program, data such as management information, and the like, an input unit (for example, an input port) 13, an output port 14, And a system bus 15 and the like.

The CPU 11 includes, based on a control program or the like, abnormality specifying means for specifying a CP or HD receiving power supply from the UPS to which the abnormality detection signal ALM has been output, and a file stored in the HD. It operates as a business search means for searching for a corresponding business program. Further, the CPU 11 also has a function as a CP specifying unit for specifying a CP executing the searched business program and a stop instructing unit for instructing the CP to stop.

The input port 13 is an interface circuit for receiving the abnormality detection signals ALM1 to ALM4 from the UPSs 5 to 8 into the CPU 11. Output port 14
Is an interface circuit for outputting shutdown signals SD1 and SD2 from the CPU 11 to CP1 and CP2. The memory 12 stores a control program 12a, work data 12b, and the like, and also registers in advance management information of power supply information 12c, file information 12d, and business process information 12e for shutdown control.

FIGS. 3 (a) to 3 (c) show the memory 1 in FIG.
FIG. 4 is an explanatory diagram showing an example of management information in 2. FIG. 3 (a)
As shown in the figure, the power supply information 12 c
It shows the correspondence between the PSs 5 to 8 and the devices such as the CPs 1 and 2 and the HDs 3 and 4 that receive power from the UPSs 5 to 8. The file information 12d in FIG.
It shows what business program the files stored in 3 and 4 correspond to. For example, HD
3 indicates that files related to the business programs PA and PB are stored.

The business process information 12e shown in FIG.
Indicates which CP is executing the business programs PA, PB, and PC. For example, the business program PA is executed in CP1, and the business program PC is
2 is executed. These pieces of information are created when the computer system is configured and when the configuration is changed, and the latest management information is registered in the memory 12. FIG. 4 is a flowchart showing the operation of the shutdown control system 10 in FIG. 1, and is executed by the CPU 11 according to the control program 12a.

Hereinafter, the operation of the shutdown control system 10 in the computer system of FIG. 1 will be described with reference to FIGS. 3 and 4. When the operation of the shutdown control system 10 is started by turning on the power or the like, in the abnormality monitoring process of step S1 in FIG.
Abnormality detection signals ALM1 to ALM4 from 8 to 取 り 込 ま 8 are taken in through the input port 13, and the states of the commercial power supplies AC1 to AC4 are monitored. If there is no abnormality, the abnormality monitoring process of step S1 is permanently repeated. Here, when an abnormality is detected, the process proceeds to step S2.

In the abnormality identification processing in step S2, the power supply information 12c in the memory 12 is referred to determine whether the power supply destination of the UPS in which the abnormality has occurred is the CP or the HD. If it is CP, the process proceeds to step S3, and if it is HD, the process proceeds to step S4. For example, UPS
If the abnormality detection signal ALM1 from No. 5 is detected, the power supply destination is determined to be CP1, and the process proceeds to step S3. In the stop instruction process of step S3, a shutdown signal SD1 for instructing the CP (in this case, CP1) of the power supply destination of the UPS in which the abnormality is detected to stop.
Is generated and output from the output port 14. Thus, the end process is performed in CP1 according to the shutdown signal SD1.

On the other hand, in step S2, for example, U
When the abnormality detection signal ALM4 from PS8 is detected, the power supply destination is determined to be HD4, and the process proceeds to step S4. In the job search process of step S4, the file information 12d in the memory 12 is searched, and the job program related to the file stored in the power supply destination HD (in this case, HD4) of the UPS in which the abnormality has occurred is searched. You. FIG.
As shown in (b), the business program P is stored in the HD4.
It is searched that A and PC are related. Step S
After 4, the process proceeds to step S5.

In the CP specifying process in step S5, the business process information 12e in the memory 12 is referred to, and the CP executing the business program searched in step S4 is specified. In this case, as shown in FIG. 3C, the business program PA is CP1, and the business program PC is CP1.
At 2, it is specified that each is being executed. After step S5, the process proceeds to step S6.

In the stop instruction processing in step S6, a shutdown signal SD for instructing the CP specified in step S5 to stop the running business program is generated and output from the output port 14. . In this case, a shutdown signal SD1 for stopping the business program PA for CP1 and a shutdown signal SD2 for stopping the business program PC for CP2 are output. Thereby, CP1
, The end processing of the business program PA is performed according to the shutdown signal SD1. Further, in CP2, the end processing of the business program PC is performed according to the shutdown signal SD2.

As described above, the shutdown control system according to the present embodiment, when the commercial power sources AC3 and AC4 of the HDs 3 and 4 shared by the CPs 1 and 2 are abnormal,
4 is specified, and the shutdown signal SD is output to the corresponding CP. As a result, there is an advantage that appropriate termination processing can be performed even for a power supply abnormality of the shared external storage device such as the HDs 3 and 4.

Note that the present invention is not limited to the above embodiment, and various modifications are possible. For example, there are the following modifications (a) and (b). (A) The shutdown control system 10 of FIG.
The present invention is not limited to the computer system composed of P1, P2 and HD3, 4, but can be similarly applied to a computer system having more CPs and HDs.

(B) The management information for determining the shutdown signal SD corresponding to the abnormality detection signal ALM is not limited to the format illustrated in FIG. Identify the CP or HD that is receiving power from the commercial power supply AC where the abnormality has occurred, and execute the business program related to this.
Any format may be used as long as it can specify the format.

[0027]

As described above in detail, according to the first aspect, a file stored in a corresponding external storage device is handled based on an abnormality detection signal output from the UPS when an abnormality occurs in the commercial power supply. CP that executes business programs
And a stop instruction process for instructing the identified CP to stop. This makes it possible to perform an appropriate shutdown corresponding to the commercial power supply in which the abnormality has occurred.

According to the second invention, the input means for inputting the abnormality detection signal output from the UPS when the commercial power supply is abnormal, and the CP for executing the business program corresponding to the file stored in the corresponding external storage device And stop instructing means for instructing to stop the specified CP. This makes it possible to perform an appropriate shutdown corresponding to the commercial power supply in which the abnormality has occurred.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a computer system including a shutdown control system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram illustrating an example of a conventional computer system using a UPS.

FIG. 3 is an explanatory diagram showing an example of management information in a memory 12 in FIG.

FIG. 4 is a flowchart showing an operation of the shutdown control system 10 in FIG.

[Explanation of symbols]

 1, 2 CP (computer) 3, 4 HD (hard disk device) 5-8 UPS (uninterruptible power supply) 10 shutdown control system 11 CPU (central processing unit) 12 memory 13 input port 14 output port

Claims (2)

[Claims] 1. A computer system comprising: a plurality of independent computers; an external storage device shared by the computers; and a plurality of uninterruptible power supplies provided separately for supplying power to the computer and the external storage device. A shutdown control method for controlling an end process of a business program corresponding to a computer in the event of a commercial power failure, wherein the plurality of uninterruptible power supplies each monitor an abnormality detection signal output in the event of a commercial power failure. A monitoring process; an abnormality identification process for identifying a computer or an external storage device receiving power supply from the uninterruptible power supply device to which the abnormality detection signal is output; and an uninterruptible power supply for the external storage device when the abnormality detection signal is output. When output from the device, it is stored in the external storage device by referring to the management information registered in advance. A business search process for searching for a business program corresponding to the searched file; a computer specifying process for specifying a computer executing the business program searched for in the business search process with reference to the management information; When the detection signal is output from the uninterruptible power supply for the computer, the corresponding computer is instructed to stop, and when the abnormality detection signal is output from the uninterruptible power supply for the external storage device, the computer identification processing is performed. And a stop instruction process for instructing the computer identified in (1) to stop the business program searched in the business search process. 2. A computer system comprising: a plurality of independent computers; an external storage device shared by the computers; and a plurality of uninterruptible power supplies individually provided to supply power to the computer and the external storage device. A shutdown control system for controlling a termination process of a business program of a computer corresponding to an abnormality of a commercial power supply, wherein an input for inputting an abnormality detection signal output from the plurality of uninterruptible power supplies when a commercial power supply abnormality occurs, Means, an abnormality specifying means for specifying a computer or an external storage device receiving power supply from the applicable uninterruptible power supply based on the abnormality detection signal, and an uninterruptible power supply for the external storage device, wherein the abnormality detection signal is When output from the device, refer to the management information registered in advance and store it in the external storage device. A business search unit for searching for a business program corresponding to the stored file; a computer specifying unit for specifying a computer executing the searched business program with reference to the management information; When output from the uninterruptible power supply for the computer, the corresponding computer is instructed to stop, and when the abnormality detection signal is output from the uninterruptible power supply for the external storage device, the specified computer is And a stop instruction means for instructing to stop the searched business program.