JPH096485A - Power supply control interface controller - Google Patents

Abstract

(57) [Abstract] [Purpose] The power control of the shared device is related to the power control of all the shared information processing devices, and it is prevented that the information processing device cannot access the shared device due to the power off of the shared device. To do. When a power-on instruction is issued from at least one of the two information processing devices at power-on, the information is supplied to the MPUs 5 and 6 of the interface control device 4 via the power supply control interfaces PI1 and PI2, respectively. The MPUs 5 and 6 notify each other of the states and turn on the power of the shared device via the power control interface PI3. At power-off, when a power-on instruction is issued from the information processing device, the information is transferred to the power control interface PI.
1 and PI2 to the MPUs 5 and 6 of the interface controller 4, respectively. The MPUs 5 and 6 do not turn off the power of the shared device even if a disconnection instruction is issued from either one of the two information processing devices, and when the disconnection instruction is issued from both of the two information processing devices, the power supply control interface PI3 is activated. Power off the shared device via.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power control interface control device for appropriately performing power control in a system including a plurality of information processing devices and a shared device controlled by the power control interface of the information processing devices. In particular, it relates to a controller of a power control interface suitable for a multiplexing system such as a so-called duplex system for backup.

[0002]

2. Description of the Related Art As information processing systems are used as social infrastructures in various fields, there is an increasing demand for increasing the reliability of the information processing systems.

As a method for improving the reliability of an information processing system, when one information processing apparatus is duplicated and one information processing apparatus becomes inoperable, another one information processing apparatus is used. There is a case where a so-called duplex system is adopted, in which the backup is performed and the processing is continued.
Of course, not only the duplexing but also the system may be constructed by further multiplexing to remarkably improve the reliability.

In the conventional duplex system, the power supply control interfaces of the two information processing devices operate independently and the power supplies of the devices respectively connected to the power supply control interfaces of these two information processing devices are: It is controlled separately by the two information processing devices.

That is, a device connected to one information processing device is turned on / off together with the information processing device, and is controlled regardless of the power on / off state of the other information processing device. It

Further, since the power control interface operates independently, a device connected to the power control interface of two information processing devices, such as a shared disk commonly used by the two information processing devices, can be used. It may be shared by two information processing devices. In such a case, when the power of one information processing device to which the shared device is connected is cut off, the power of the shared device connected to it is cut off regardless of the operating state of the other information processing device. Will end up.

[0007]

As described above, in the related art, for example, the power supply control interface of each information processing apparatus that constitutes a duplex system supplies the power supply of the apparatus connected to each information processing apparatus to each information processing apparatus. A device that is independently controlled and that is connected to one information processing device is powered on / off together with the information processing device, regardless of the power-on / off status of the other information processing device. It will be controlled.

For this reason, a device connected to the power control interface of two information processing devices, such as a shared disk device commonly used by the two information processing devices, is shared by the two information processing devices. If the information processing device to which the shared device is connected is powered off, the power to the shared device connected to it is cut off regardless of the operating state of the other information processing device. .
Therefore, there is a problem that the power supply to the shared device is unconditionally cut off due to the power-off of the one information processing device, and the access from the other information processing device becomes impossible.

The present invention has been made to solve the above-mentioned problems, and relates the power control of the shared device to the power control of all the shared information processing devices, and by disconnecting the power of the shared device, An object of the present invention is to provide a control device of a power control interface that can effectively prevent an information processing device from being unable to access a shared device.

[0010]

In order to solve the above-mentioned problems, the present invention is configured as follows. A control device for a power control interface according to the present invention is connected to each power control interface of a plurality of information processing devices each having a power control interface for controlling an external device, and is commonly used by the plurality of information processing devices. A plurality of processing devices that are commonly connected to the power supply control unit of the shared device and that control the power supply control unit of the shared device based on a control instruction given through each of the power supply control interfaces; Are installed so as to operate in association with each other, the shared device is turned on in synchronization with a power-on instruction of any one of the plurality of information processing devices, and all power supplies of the plurality of information processing devices are turned on. An interlocking control means for turning off the power supply of the shared device based on a disconnection instruction is provided [claim 1].

The interlocking control means may include means for interlocking the power supply of one of the plurality of information processing devices with the power supply of another information processing device in cooperation with the power supply of the other information processing device. The interlocking control means may include a signal line connecting the processing devices so as to exchange information with each other.

The interlocking control means may include a signal line for commonly connecting all power supply control interfaces of a plurality of information processing devices to all processing devices (claim 4).
The plurality of processing devices may each have a multitask processing function, and the interlocking control means may include means controlled by a program common to the plurality of processing devices.

Another power supply control interface controller according to the present invention has a power supply control interface for controlling an external device and is connected to each power supply control interface of a plurality of information processing devices forming a multiplexing system. In addition, the power control unit of the shared device is connected in common to the power control unit of the shared device that is commonly used by the plurality of information processing devices, and controls the power control unit of the shared device based on a control instruction given through each power control interface. A plurality of processing devices to be controlled and the plurality of processing devices are incorporated so as to operate in association with each other, and the shared device is powered on in association with a power-on instruction of any one of the plurality of information processing devices. And interlocking control means for turning off the power supply of the shared device based on all power-off instructions of the plurality of information processing devices. Characterized Rukoto [Claim 6].

[0014]

In the control device of the power control interface according to the present invention, the processing devices are respectively connected to the power control interfaces of the plurality of information processing devices, and these processing devices are controlled in an associated manner to cut off the power from all the information processing devices. Do not power off shared devices unless instructed to do so.

Further, when the power of a certain information processing device is turned on, it is possible to automatically control the power of another information processing device to be turned on.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. [Embodiment 1] A duplex system incorporating a control device for a power supply control interface in principle according to a first embodiment of the present invention will be described with reference to FIG.

The duplex system shown in FIG. 1 includes a first information processing apparatus (hereinafter referred to as "# 0 information processing apparatus") 1,
Second information processing device (hereinafter referred to as “# 1 information processing device”) 2, shared device 3, and interface control device 4
Is provided.

# 0 and # 1 Information processing devices 1 and 2
Are provided with data buses B1 and B2, respectively, and are connected to the interface control device 4 via power supply control interfaces PI1 and PI2.

The shared device 3 is a device such as a shared disk device which is commonly used by the # 0 and # 1 information processing devices 1 and 2, and is connected to the # 0 via the data bus B1.
It is coupled to the information processing device 1 and is also coupled to the # 1 information processing device 2 via the data bus B2. Shared device 3
Is further connected to the interface control device 4 via the power supply control interface PI3.

The interface control device 4 is a control device for power supply control interface control according to the present invention.
As shown in FIG. 2, the first and second microprocessor units (hereinafter, “# 0MPU” and “#
1MPU ") 5 and 6.

The # 0 MPU 5 is connected to the # 0 information processing apparatus 1 via the power supply control interface PI1.
The # 1 MPU 6 is connected to the # 1 information processing device 2 via the power supply control interface PI2. These # 0M
The PU 5 and the # 1 MPU 6 are connected to the shared device 3 via the power supply control interface PI3 in common. The # 0MPU5 and # 1MPU6 are connected to each other by a signal line for status notification.

The # 0MPU5 and # 1MPU6 perform interlocking control as follows, for example, by firmware. When power is turned on, # 0MPU5 and # 1MPU6
Turns on the power of the shared device 3 when a power-on instruction is issued from at least one of the # 0 and # 1 information processing devices 1 and 2. When the power is turned off, the # 0MPU5 and # 1MPU6 do not turn off the power of the shared device 3 until a disconnection instruction is issued from both the # 0 and # 1 information processing devices 1 and 2, and the # 0 and # 1 information is output. When a disconnection instruction is issued from both the processing devices 1 and 2, the shared device 3 is powered off.

The operation of the duplex system having such a configuration when the power is turned on and off will be described. At power-on, when a power-on instruction is issued from at least one of the # 0 information processing device 1 and the # 1 information processing device 2, the information is sent via the power control interfaces PI1 and PI2 to the # 0MPU5 and the # 0MPU5 of the interface control device 4, respectively. It is supplied to the # 1 MPU 6. # 0MPU5 and #
The 1MPUs 6 notify each other of the states and control to turn on the power of the shared device 3 via the power supply control interface PI3. At this time, the # 0 information processing device 1
And one of # 1 information processing device 2, for example, # 0
When the information processing device 1 issues a power-on instruction and the other information processing device, for example, the # 1 information processing device 2 is not powered on, if necessary, the power supply of the other # 1 information processing device 2 is performed. It is also possible to control to turn on.

When the power is turned off, # 0 information processing device 1
And when the input instruction is issued from the # 1 information processing device 2,
The information is the power control interfaces PI1 and PI2.
# 0MP of the interface control device 4 via
Supplied to U5 and # 1 MPU6. The # 0MPU5 and # 1MPU6 do not turn off the power of the shared device 3 even if a disconnection instruction is issued from any one of the # 0 and # 1 information processing devices 1 and 2. Then, when the disconnection instruction is issued from both the # 0 and # 1 information processing devices 1 and 2, the # 0MPU5 and # 1MPU6 control to disconnect the power of the shared device 3 via the power supply control interface PI3.

The interface controller 4 which is the controller of the power control interface incorporated in the duplex system as described above shuts off the power of the shared device 3 from all the information processors 1 and 2. Is not disconnected until either the information processing device 1 or 2
There is no possibility that the shared device 3 cannot be accessed because the other power supply is cut off.

Further, since the power of the shared device 3 can be automatically turned on by turning on the power of the one information processing device 1 or 3, the operability of the system is improved. Further, by turning on the power of one of the information processing devices 1 or 3,
The shared device and the other information processing device can be automatically turned on, and the system can be operated effectively.

[Embodiment 2] FIG. 3 shows a specific configuration of a duplex system incorporating a control device for a power supply control interface according to a second embodiment of the present invention.

The duplex system shown in FIG. 3 comprises a first information processing device (# 0 information processing device) 11, a second information processing device (# 1 information processing device) 12 and an interface control device 13.

The # 0 information processing device 11 and the # 1 information processing device 12 form a duplex system. These # 0 information processing device 11 and # 1 information processing device 12 have power supply control devices 11A and 12A, respectively.

The interface control device 13 is a control device for the power supply control interface, and includes a first microprocessor unit (# 0MPU) 14, a second microprocessor unit (# 1MPU) 15, and a first control RO.
M (read only memory) 16, second control ROM 1
7, and has line control units 18, 19, 20 and 21.

# 0MPU14 and # 1MPU15 are
Power control interfaces PI11 and PI12 connected to the power control device 11A of the # 0 information processing device 11 and the power control device 12A of the # 1 information processing device 12, respectively.
Control. The control ROM 16 stores a control program for the # 0MPU 14, and the control ROM 17 stores # 1M.
The control program of PU15 is stored.

The line control units 18, 19, 20, and 21 are
0 power supply control interface PI11 connected to the power supply control device 11A of the information processing device 11, # 1 information processing device 1
2 provided when the power supply control interface PI12 connected to the power supply control device 12A and the power supply control interface PI13 connected to the power supply control unit of the shared device (not shown in FIG. 3) are power supply control interfaces by serial communication. Then, the lines of these power supply control interfaces PI11 to PI13 are controlled. In this case, the communication information of the power control interfaces PI11 to PI13 is
Power control device 11 inside information processing devices 11 and 12
It has commands from A and 12A and a status response from the interface controller. The communication information of the power supply control interfaces PI11 to PI13 is set to power on /
In addition to the control information related to disconnection, information for switching the fan rotation speed between high-speed rotation and low-speed rotation for noise countermeasures, and information for changing the output voltage of the power supply, for example, ±%, as a test function. , Device number information that is automatically set to allocate an alarm of the device, and information for notifying an external state such as an alarm device of an abnormal state of the information processing device.

The power supply control devices 11A and 12A respectively include power supply control interfaces PI11 and PI12.
# 0MPU14 of the interface control device 13 via
Line control unit 18 of # 1 and line control unit 1 of # 1 MPU 15
9 is connected. Interface controller 13 #
The line control unit 20 of the 0 MPU 14 and the line control unit 21 of the # 1 MPU 15 are connected to the shared device via the power supply control interface PI13.

The # 0MPU 14 and the # 1MPU 15 are connected to each other by a signal line for mutual status monitoring. # 0M
The PU 14 operates according to a program stored in the control ROM 16 as firmware, and the # 1 MPU 15
Operates as follows according to a program stored as firmware in the control ROM 17.

When the power is turned on, # 0MPU14 and # 1
When the power-on instruction is issued from at least one of the # 0 and # 1 information processing devices 11 and 12, the MPU 15 powers on the shared device. When the power is turned off, # 0M
The PU 14 and the # 1 MPU 15 do not turn off the shared device until the disconnection instructions are issued from both the # 0 and # 1 information processing devices 11 and 12, and disconnect from both the # 0 and # 1 information processing devices 11 and 12. Turn off the shared device when instructed.

Control ROM for operation at power-on and power-off in the duplex system having such a configuration
This will be described with reference to FIG. 4, which shows a flowchart of the programs stored in 16 and 17.

In the flowchart shown in FIG. 4, # 0MPU
The control programs for 14 and # 1 MPU 15 are shown separately on the left and right. Each of the control programs is the information processing device 1
It is a multi-task program consisting of a task 1 for performing processing between 1 and 12 and a task 2 for performing processing between shared devices.

In the task # 1 of the # 0MPU 14, after the initialization process (step S11A), the information processing device 11 is executed.
Command reception process from # 0MPU14, and if it is a power-on command, set the power-on flag,
If it is a power-off command, the power-off flag is set (step S12A), and the output signal of the status notification to the # 1 MPU 15 is changed according to the received command (step S13A). Further, a status response process to the information processing device 11 according to the resulting state is performed (step S14A), and the process returns to step S12A.

In task # 2 of # 0MPU14, after initialization processing (step S21A), status notification input processing from # 1MPU15 is performed. If the power is on, the power-on flag is set, and if the power is off. For example, the power-off flag is set (step S22A), command transmission processing to the shared device is performed according to the state of the flag (step S23A), and the shared device is controlled. That is, if the power-on flag of at least one of the own system and the other system is on, the shared device is turned on, and if the power-off flag of the own system is on and the power-off flag of the other system is also on, the sharing is performed. Switch off the device. The status reception process from the shared device as a result is performed (step S24).
A) and returns to step S22A.

In the task 1 of the # 1 MPU 15, the information processing apparatus 12 is executed after the initialization processing (step S11B) is performed.
# 1 MPU15 command reception processing is performed, and if it is a power-on command, the power-on flag is set,
If it is a power-off command, the power-off flag is set (step S12B), and the output signal of the status notification to the # 0MPU 14 is changed according to the received command (step S13B). Further, a status response process to the information processing device 12 according to the resulting state is performed (step S14B), and the process returns to step S12B.

In the task 2 of the # 1 MPU 15, after performing the initialization process (step S21B), the process of inputting the status notification from the # 0 MPU 14 is performed. If the power is turned on, the power-on flag is set, and if the power is turned off. For example, the power off flag is set (step S22B), and the command transmission process to the shared device is performed according to the state of the flag (step S23B). The command transmission process in step S23B is for commonization of programs,
This is not actually done, but the shared device is controlled by the # 0 MPU 14. That is, if the power-on flag of # 0MPU14 is on, the power of the shared device is turned on, the power-off flag of # 0MPU14 is on, # 1M.
If the power off flag of the PU 15 is also on, the power of the shared device is cut off. The status reception process from the shared device as a result is performed (step S24B), and then step S
Return to 22B.

That is, the output signal of step S13B is
It is input in step S22A of task 2 of # 0MPU 14, and command processing to the shared device is performed. Actually, the command processing to the shared device is controlled only by MPU # 0, but the status response from the shared device is # 0MPU1.
Since it is input to both 4 and # 1 MPU 15, both can recognize the status.

For example, when turning off the power, # 0M
Before the PU 14 receives the power-off command from the # 0 information processing device 11 and powers off the shared device, the # 1 MPU
When the # 1 MPU 15 is in the power-on state by detecting the status signal of No. 15, the shared device is controlled not to be powered off. When the # 1 MPU 15 is in the power-off state, the # 0 information processing device 11 controls to power off the shared device according to the power-off command.

By the interface control device 13 as described above, the power supply of the shared device is not cut off until the power supply of all the information processing devices 11 and 12 are cut off. The shared device cannot be inaccessible due to the power being turned off.

Further, one of the information processing devices 11 and 12
Since the power of the shared device can be automatically turned on when the power is turned on, the operability of the system is improved. Of course, the present invention can be applied not only to the duplex system but also to a multiplex system using more backup systems, or a system including a plurality of information processing devices and their shared devices.

Further, instead of providing a signal line between the microprocessor units forming each processing device, the power supply control interfaces of all the information processing devices may be coupled to the microprocessor units forming each processing device. .

[0047]

According to the present invention, the processing devices are connected to the power control interfaces of a plurality of information processing devices, respectively.
Related processing of these processing devices is performed so that the power of the shared device is not turned off unless the power-off instruction is issued from all the information processing devices. In connection with power supply control, it is possible to provide a control device of a power supply control interface that can effectively prevent the information processing device from being inaccessible to the shared device due to powering off of the shared device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a duplex system according to a first exemplary embodiment of the present invention.

FIG. 2 is a system block diagram showing a detailed configuration of a control device of the power supply control interface of FIG.

FIG. 3 is a block diagram showing a configuration of a duplication system according to a second exemplary embodiment of the present invention.

FIG. 4 is a flowchart showing details of processing in a control device of the power supply control interface of FIG.

[Explanation of symbols]

1, 2, 11, 12 ... Information processing device 11A, 12A ... Power supply control device 3 ... Shared device 4, 13 ... Interface control device 5, 6, 14, 15 ... Microprocessor unit (M
PU) 16, 17 ... Control ROM 18, 19, 20, 21, ... Line control unit PI1, PI2, PI3, PI11, PI12, PI1
3 ... Power control interface B1, B2 ... Data bus

Claims (6)

[Claims] 1. A power control of a shared device which is connected to each power control interface of a plurality of information processing devices each having a power control interface for controlling an external device and which is commonly used by the plurality of information processing devices. A plurality of processing devices that are commonly connected to the control unit and that control a power supply control unit of the shared device based on a control instruction given through each of the power supply control interfaces, and operate the plurality of processing devices in association with each other. Incorporated in such a manner that the shared device is powered on in conjunction with a power-on instruction of any one of the plurality of information processing devices,
A control device for a power control interface, further comprising: interlocking control means for turning off the power of the shared device based on all power-off instructions of the plurality of information processing devices. 2. The interlocking control means includes means for turning on the power of another information processing apparatus in synchronization with turning on the power of one of the plurality of information processing apparatuses.
The control device of the power supply control interface according to. 3. The power supply control interface control according to claim 1, wherein the interlocking control means includes a signal line connecting the processing devices so as to exchange information with each other. apparatus. 4. The power supply control according to claim 1, wherein the interlocking control means includes a signal line for commonly connecting all power supply control interfaces of the plurality of information processing devices to all processing devices. Interface controller. 5. The plurality of processing devices each have a multi-task processing function, and the interlocking control means includes means controlled by a program common to the plurality of processing devices. 5. The control device for the power supply control interface according to claim 4. 6. A power supply control interface for controlling each external device and being connected to each power supply control interface of a plurality of information processing devices constituting a multiplexing system, and commonly connected to the plurality of information processing devices. A plurality of processing devices that are commonly connected to a power supply control unit of the shared device and that control the power supply control unit of the shared device based on a control instruction given via each of the power supply control interfaces; The devices are installed so as to operate in association with each other, and the shared device is turned on in synchronization with a power-on instruction of any one of the plurality of information processing devices,
A control device for a power control interface, further comprising: interlocking control means for turning off the power of the shared device based on all power-off instructions of the plurality of information processing devices.