JPH05143204A - Power supply interruption control system - Google Patents

Abstract

PURPOSE:To improve the operating performance of a power supply interruption control system where the power supply of a server using the resources is interrupted by informing the server of the interruption of the power supply when the power supply of a client is interrupted and interrupting quickly the power supply of the server in response to an interruption instruction. CONSTITUTION:A server 1 registers an under-connection state on a control table 11 in response to a communication connecting request given from a client 2. The client 2 informs the server 1 using the resources of the interruption of the power supply via a circuit in response to a power supply interruption instruction. Meanwhile the client 2 of the table 11 is changed into an unconnected state. Then the power supply of the server 1 is interrupted in response to a power supply interruption instruction after all clients 2 are unconnected on the table 11 if even one of these clients 2 is connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power cutoff control system for cutting off a power supply of a server in which resources are used.

[0002]

2. Description of the Related Art Server (server / workstation)
When a client (client workstation) connecting to this server via a line is using the resources of the server in response to pressing the power-off switch of, the server waits for the end of its use. It is necessary to turn off the power. In order to realize this, conventionally, as shown in FIG. 6 (a), a server whose power-off switch is pressed performs communication for confirming the status with other clients, and the resources of the server are After confirming that it was not used, the server was powered off. The configuration and operation of FIG. 6A will be briefly described below.

In FIG. 6A, a server is a workstation to which the client # 1 uses resources (for example, files, printers, logical destinations, communication lines, etc.) via lines.

The clients # 1 to #N are workstations that use the resources of the server via a line. Next, the operation will be described.

In FIG. 6 (a), the operator depresses the power switch of the server to instruct the power off. Checks if the server is being used by another client. If necessary, the client's status (resource in-use status, resource-unused status, power-off status, etc.) is checked by communicating with the client.

[0006] When the server confirms that the server is not being used by another client, the power is turned off. When it turns out to be in use,
It waits until its use is finished, and when the use is finished, the power is turned off.

Here, the server performs communication for confirming the states of other clients in the following cases, for example. (1) When the server manages whether or not the communication connection is connected: In this case, the server is connecting the client and the communication connection, and the client determines the resources on the server. When it may be in use, you need to ask the client to see if it is really using the resources of the server.

(2) When the existence of a specific application is managed on the server: In this case, it is necessary to inquire whether the application using the resource on the server exists on the client and confirm it.

[0009]

Therefore, normally, after the power of the client is turned off, it takes a certain time for the server to detect this, and the power of the server cannot be turned off promptly. There was a problem that it deteriorated. More specifically, in the example of (1) (the same applies to the example of (2)), as shown in (b) of FIG. 6, the state of whether or not the communication connection is being connected is displayed on the server. Manage,
It is necessary to check the status of the connected client, and immediately after the power of the client is turned off, communication processing is performed to check the status of the server, and the status cannot be detected quickly. The operation of FIG. 6B will be briefly described below.

In FIG. 6B, the client connects a communication connection to the server. Records that the server is communicating with client # 1 corresponding to.

In the above, the operator depresses the power switch of the server and gives a power-off instruction. Immediately after this, the power of the client is cut off in response to the pressing of the power switch by the operator on the client side.

In order to confirm the status because the server judges that the server is still communicating with the client # 1,
Communication for that is made to the client # 1. In response to the communication of, when a certain period of time has passed and a time-out occurs, a communication error occurs, and at this time, the server detects that the power of the client # 1 has been cut off, so the power of the server is cut off. .. Here, since the power of the client # 1 has already been cut off, the server cannot detect the state of the client # 1 (here, the power-off state) until a communication error occurs after a certain period of time has elapsed. , I could not turn off the power during this time,
This means that it will be on standby, and it will not be possible to turn off the power even though the power may be turned off. Especially when the number of clients increases, the power off will be delayed further There was a problem that it was not good.

According to the present invention, a control table for managing the usage status of both the server and the client is provided, the power-off of the server in use is notified to the server in use at the time of power-off of the client, and the power-off instruction of the server is promptly responded to. The purpose is to enable power off and improve operability.

[0014]

[Means for Solving the Problems] Means for solving the problems will be described with reference to FIG. In FIG. 1, the server 1
Is a resource (for example, a workstation) having a control table 11 for registering the resources and the connection state with the client 2.

The client 2 uses the resources of the server 1 via a line (for example, a workstation).
Is. The control table 11 is for registering the connection state of the client 2.

The control table 21 is for registering the connection status of the server 1.

[0017]

According to the present invention, as shown in FIG. 1, the server 1 is provided with the control table 11, and in response to the connection request of the communication connection from the client 2, the server 1 registers that the connection is in the control table 11, In response to the power-off instruction, the client 2 notifies the server 1 using the resource via the line to that effect, and changes the client 2 in the control table 11 to the unconnected state. In response to the power-off instruction of the server 1, when all the clients 2 on the control table 11 are not connected, if not connected, wait for all to become unconnected, and then power off the server 1. I am trying to do it.

Further, the control tables 11 and 21 are provided in the server 1 and the client 2, respectively. In response to a connection request from the client 2 for a communication connection, the server 1 registers that the control table 11 is connected and the client 2 controls. The server 1 being connected to the control table 21 is registered by the client 2 in response to the power off instruction registered in the table 21.
The client 2 of the control table 11 to the unconnected state in response to the notification via the line to all the clients on the control table 11 in response to the power-off instruction of the server 1. When 2 is not connected, when not connected, the server 1 is powered off after waiting for all to be disconnected.

Further, in response to the power-off instruction to the server 1, when even a part of the clients 2 on the control table 11 is not connected, the client 2 which is not connected (being connected).
Inquires about power off via the communication connection.
The power is turned off when there is a response that the power can be turned off from all.

Therefore, a control table for managing the usage status of one or both of the server 1 and the client 2 is provided,
By notifying and recording the power-off to the server 1 in use when the power of the client 2 is turned off, it is possible to quickly turn off the power in response to the power-off instruction of the server 1 and improve the operability. Become.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the construction and operation of an embodiment of the present invention will be described in detail with reference to FIGS.

In FIG. 1, a server 1 is a workstation or the like for managing resources such as files, printers, logical destinations, communication lines, and applications, and is used by the client 2 via the lines. In this case, the control table 11, the power-off notification responding unit 12,
The power control unit 13 and the like are included.

The control table 11 is provided for each server 1 and registers the connection status (connected or not connected) with the server 1 in association with the client identifier.
Here, while connecting to the client # 1, the client #
2 is registered as not connected.

The power-off notification responding unit 12 forcibly sets the connection state of the corresponding client identifier in the control table 11 to the unconnected state in response to the notification from the client 2 that the power of itself is cut off via the line. It is something to set.

The power supply control unit 13 turns on the power supply in response to the pressing of the power supply switch of the server 1, or refers to the control table 11 to turn off the power supply when all the client identifiers are set to be unconnected. Alternatively, the disconnection is suspended when the connection is set, and the disconnection of the power supply is suspended until all are set as unconnected.

The client 2 is connected to the server 1 via the line.
A workstation or the like that uses the resources described above, and is composed of a control table 21, a control table management unit 22, a power-off notification unit 23, and the like.

The control table 21 is provided for each client 2,
The connection status (connected or not connected) with the client 2 is registered in association with the server identifier. Here, the server 1 is registered as being connected.

The control table management unit 22 manages the control table 21. The control table management unit 22 requests the connection of the communication connection to, for example, the server 1 through the line, and when the connection is established, the control table 21 is assigned a server identifier. Correspondingly, "connecting" is set as the connection status, or the connection status of the corresponding server identifier in the control table 21 is set to "not connected" when the communication connection is disconnected.

The power-off notification unit 23, in response to the power-off instruction by pressing the power switch of the client 2, notifies all of the servers 1 registered in the control table 21 that the power is off. The connection status of the client in the control table 11 of the server 1 is forcibly changed to unconnected.

Next, the operation of the configuration of FIG. 1 will be described in detail with reference to FIG. This FIG. 2 shows the control table 2 of the client 2.
In the state where the connection state of the server 1 of No. 1 is set to “not connected”, the power switch of the client 2 is pressed to turn off the power (route of FIG. 4).

In FIG. 2, S1 is the client # 1.
Notifies the server 1 of the request for connection of the communication connection via the line. In S2, in response to the notification in S1, the connection with the client # 1 is registered in the control table 11. As described in the control table 11 of FIG. 1, this is because the communication connection connection request is notified from the client # 1, so that the communication table is connected and the control table 1
The connection status "connecting" is registered in 1 in association with the client # 1.

In S3, the client # 1 controls the control table 21.
In, the connection with the server 1 is registered. This is because the client # 1 is the server 1 as described in the control table 21 of FIG.
Since the connection for communication has been established between and, the connection status "connecting" is registered in the control table 21 in association with the server 1.

In S4, the resource of the server 1 is used via the communication connection to which the client # 1 is connected. S
In No. 5, since the client # 1 has finished using the resources of the server 1 via the communication connection, it notifies the communication connection disconnection.

In step S6, the server 1 controls the control table 1 in response to the communication disconnection notification from the client # 1.
1) and change the connection status of client # 1 to "not connected".

In step S7, the client # 1 deletes the control table 21 and changes the connection state of the server 1 to "not connected". In S8, the operator presses the power switch of the client # 1 to give a power-off instruction.

In S9, in response to the power-off instruction in S8,
Here, all the connection states of the control table 21 are found to be "unconnected", so the power is cut off as it is (route of FIG. 4 described later).

In step S10, the operator depresses the power switch of the server 1 to give a power-off instruction. S11
In response to the power-off instruction in S10, since all the connection states of the control table 11 are found to be "unconnected" here, the power is turned off as it is.

As described above, the control table 11 is provided in the server 1 and the control table 21 is provided in the client 2, and the connection status of each of the client 2 or the server 1 to which the communication connection is connected when the use of the resources of the server 1 is started. Is registered as “connecting”, the connection status is changed to “not connected” at the end of use of the resource, and when the power is turned off, these control tables 11 and 21 are referred to, and all are not connected. Turn off the power. As a result, the power can be quickly cut off, and the operability is improved.

Next, the operation of the configuration of FIG. 1 will be described in detail with reference to FIG. This FIG. 3 shows the control table 2 of the client 2.
This is a case where the power supply switch of the client 2 is pressed to turn off the power in a state where the connection state of the server 1 of No. 1 is "connecting" (route in FIG. 4).

In FIG. 3, S21 is a client #
1 notifies the server 1 of a request for connection for communication connection via a line. S22 corresponds to the notification of S21,
The connection with the client # 1 is registered in the control table 11.
This is because, as described in the control table 11 of FIG. 1, the communication connection connection request is sent from the client # 1, so that the communication connection is connected and the control table 11 is associated with the client # 1. And register the connection status "Connecting".

In S23, the client # 1 controls the control table 21.
In, the connection with the server 1 is registered. This is because the client # 1 is the server 1 as described in the control table 21 of FIG.
Since the connection for communication has been established between and, the connection status "connecting" is registered in the control table 21 in association with the server 1.

In step S24, the client # 2 notifies the server 1 of the request for connection for communication connection via the line. S25 corresponds to the notification of S24, and the control table 11
In, the connection with the client # 2 is registered. This is because the control table 11 shown in FIG. 1 notifies the communication connection connection request from the client # 2.
The connection status "connecting" is registered in association with.

In S26, the client # 2 controls the control table 21.
In, the connection with the server 1 is registered. This is because the client # 2 has made a connection for communication with the server 1, and therefore, the connection state “connecting” is registered in the control table 21 in association with the server 1.

In step S27, the resources of the server 1 are used via the communication connection to which the client # 1 is connected.
In S28, the operator of the client # 1 presses the power switch to input a power-off instruction.

In step S29, the client # 1 to which the power-off instruction has been input in step S28 refers to the control table 21 and sends a power-off notification to the connected server 1 (route in FIG. 4).

In step S30, the client # 1 which has sent the power-off notification in step S29 turns out that there is no other server 1 connected to the control table 21, and therefore turns off its own power source. S3
In No. 1, the server 1, which has received the power-off notification via the communication connection in S29, deletes it from the control table 11 and forcibly changes the connection state of the client # 1 to “not connected”.

In S32, in the state of S31, the operator depresses the power switch of the server 1 and inputs a power-off instruction. In S33, when the server 1 refers to the control table 11 and finds that the server 1 is not used from anywhere (no connection is being made in association with the client identifier), the power is cut off in S34.

On the other hand, when there is a connected client in the control table 11 as in S35, an inquiry is made via the communication connection as to whether or not the disconnection is really allowed in S36, and a response is waited for.

In step S37, as a response from the client 2 corresponding to the inquiry in step S36, it is determined whether or not there is a disconnectable response from all the clients 2. In the case of YES, there is a response from the clients registered as being connected in the control table 11 that all can be disconnected, so the power is cut off in S34. On the other hand, in the case of NO, since there is a response that the disconnection is impossible from any of the clients, the power-off is suspended in S38 and, for example, as shown in FIG. The power will not be turned off. When all the clients are turned off, the power of this server is automatically turned off. Then, it periodically polls and repeats S33 and subsequent steps.

As described above, the control table 11 is provided in the server 1 and the control table 21 is provided in the client 2, and the connection status of each of the client 2 or the server 1 of the other party to which the communication connection is established when the use of the resource of the server 1 is started. Is registered as “connecting”, and when the operator inputs a power-off instruction when the connection status of the client 2 is “connecting”, the client 2
Refers to the control table 21 and sends a power-off notification to the server 1 that is “connecting”, and “connecting” in the control table 11 of that server 1
Is forcibly changed to “not connected”, and when the power-off instruction of the server 1 is input, referring to this control table 11, if all are unconnected, the power is cut off as it is, When there is a client 2, the client 2 is notified of a power-off inquiry and waits for a response. When all the power-offs are possible, the power is turned off, and even if even one power-off is not possible, the power-off is suspended. Display a message and wait. Then, when there is a response that the power can be turned off from all the clients 2, the power of the server 1 is turned off. As a result, the client 2 and the server 1 are controlled by the control table 21,
11, it is possible to avoid unnecessary communication, quickly turn off the power, and improve operability. In particular, as described above, when the connection for communication is connected between the server 1 and the client # 1 and “connecting” is registered in both the control table 11 and the control table 21, the client #
When the operator of 1 inputs the power off instruction,
Since the client # 1 notifies the server 1 of the power-off notification and changes the control table 11 to the unconnected state, it is possible to quickly power off the server 1.

FIG. 4 shows a flowchart when the power of the client of the present invention is turned off. This is the operation when the power of the client 2 is turned off when the operator presses the power switch of the client 2 and inputs a power-off instruction.

In FIG. 4, one connection state is extracted from the control table 21 in S41. In S42, it is determined whether it is connected or not. In the case of being connected, that is, when the connection status associated with the server 1 extracted from the control table 21 of the client 2 is registered as “connecting”,
In S44, the relevant server 1 is notified of power-off (FIG. 3).
S29). In response to this, the server 1 notified in S31 of FIG. 3 described above forcibly changes the connection state of the corresponding client 2 in the control table 11 to “not connected”. Then, the process proceeds to S43. On the other hand, when not connected, that is, the server 1 extracted from the control table 21 of the client 2
When the connection state associated with is registered as "not connected", the process proceeds to S43.

S43 is for all the servers 1 in the control table 21.
It is determined whether or not the processing of step 1 has been completed. In the case of YES, the process ends and the client 2 is powered off. On the other hand, N
In the case of O, S41 and subsequent steps are repeated.

As described above, the client 2 which has received the power-off instruction from the operator or the like sends the power-off notification to all the servers 1 set in the control table 21 as "connecting", and then the power is turned off. At this time, the server 1, which has received the power-off notification, forcibly sets the connection state of the client 2 in the control table 11 of which the power is to be turned off to “not connected”. Thereby, in response to the power-off instruction of the server 1, it is not necessary to inquire the client 2 that is not connected (indicating power-off) to the control table 11, and the power-off processing of the server 1 can be performed quickly. Becomes

FIG. 5 shows an example of processing when the power-off is suspended according to the present invention. This is for all clients 2 in S37 of FIG.
No response from the client 2
Is a message to be displayed when the power-off of the server 1 is suspended when the resource of the server 1 is being used.
By displaying this message, the contents of processing are displayed for the operator who has pressed the power switch of the server 1 and instructed to turn off the power, thereby facilitating the operation.

[0056]

As described above, according to the present invention,
The server 1 and the client 2 are provided with a control table for managing the usage state, and when the power of the client 2 is cut off, the server 1 in use is notified of the power-off and recorded. It is possible to improve the operability by promptly turning off the power in response to the instruction to turn off the power. This allows the client 2 to the server 1
When the resources of the server 1 are used, the power-off of the server 1 can be put on hold, and when the power-off of the server 1 is instructed immediately after the power-off of the client 2, the power-off of the server 1 can be immediately performed. improves.

[Brief description of drawings]

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

FIG. 2 is an operation explanatory diagram (1) of the present invention.

FIG. 3 is an operation explanatory diagram (2) of the present invention.

FIG. 4 is a flowchart when the client of the present invention is powered off.

FIG. 5 is an example of processing when power-off is suspended according to the present invention.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 1: server 11: control table 12: power-off notification responding unit 13: power control unit 2: client 21: control table 22: control table management unit 23: power-off notification unit

Claims (3)

[Claims] A server (1) having a control table (11) for registering a resource and a connection state with a client (2) in a power-off control method for powering off a server in which a resource is used, A client (2) that uses the resources of the server (1) via a line is provided, and the server (1) displays the control table (11) in response to a connection request for a communication connection from the client (2). The connection is registered, and in response to the power-off instruction, the client (2) notifies the server (1) that is using the resource via the line, and the control table When the client (2) of (11) is changed to the unconnected state and all the clients (2) on the control table (11) are unconnected in response to the power-off instruction of the server (1), Some are not disconnected In this case, the power-off control method is configured such that the server (1) is powered off after waiting for all the servers to be disconnected. 2. A server (1) having a control table (11) for registering a resource and a connection state with a client (2) in a power-off control method for powering off a server using a resource, The server (1) resources are used via the line, and a client (2) having a control table (21) for registering the connection state is provided, and the client (2) responds to a connection request for a communication connection. Then, the server (1) registers that the control table (11) is connected and the client (2) registers the control table (2).
The connection is registered in 1), and the client (2) notifies the connected server (1) of the control table (21) via the line in response to the power-off instruction. On the other hand, the client (2) in the control table (11) is changed to the unconnected state, and all the clients (in the control table (11)) corresponding to the power-off instruction of the server (1) ( When 2) is not connected, if some of them are not connected, the power supply of the server (1) is cut off after waiting for all to be disconnected. method. 3. When a part of the client (2) on the control table (11) is not connected in response to the power-off instruction to the server (1), the client (2) not connected (connecting) 3. The power supply according to claim 1 or 2, wherein the power supply is inquired to 2) via a communication connection, and the power supply is turned off when all of them respond that the power supply can be turned off. Cutting control method.