JP3546528B2 - Terminal control method and service processor - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a method in which a service processor controls transfer of screen data to a terminal device connected to a service processor and operation from the terminal device.
The use of data processing systems such as banking systems and POS systems in various fields in daily life has progressed, and as the weight of data processing systems in social life has increased, the impact of system suspension has been increasing.
[0002]
When configuring a data processing system by connecting a terminal device to a large main unit, it is necessary to install a terminal control unit between the main unit and the terminal unit, and if the main unit has a service processor, A terminal device is connected to the service processor and used as a control terminal device of the service processor, an OS console terminal device of the main device, and a workstation terminal device of the main device.
[0003]
The OS console terminal used by the operator to instruct data processing and to monitor the status of the system is an indispensable device for configuring the system. However, the operator instructs only when the system is started and when the system is stopped. It is not always used, for example, when the system is operated and the system is operated unattended and may not be used.
[0004]
However, when screen data is transferred from the OS to the OS console terminal device, the power of the OS console terminal device is cut off, the interface cable is cut off, or the connector of the interface cable is disconnected. Then, the interface is interrupted, the transfer of screen data fails, and even if the screen data is not essential for system operation, the system may be stopped.
[0005]
Therefore, if it is known in advance that the screen data to be transferred to the OS console terminal device for a certain period of time is not essential, the screen data for the OS console terminal device can be obtained during that time even if the interface is interrupted. , It is necessary to report the transfer success and transfer the screen data to the OS console terminal device when the interface is restored.
[0006]
[Prior art]
In the conventional terminal control method, the terminal device for the OS console is duplicated so that the screen data can be transferred to a spare terminal device even if the transfer of the screen data to one terminal device fails, or the data processing system itself can be used. As a dual system or a duplex system to prevent the system from being stopped due to a failure in data transfer on the OS console screen.
[0007]
However, when either of the above methods is used, extra equipment costs and operation costs need to be paid as compared with the case where no duplication is performed, and an extra installation space is required. In addition, since the screen data transferred from the main unit is created in accordance with the protocol of the terminal device, a terminal device having the same protocol is required as a terminal device as an alternative to the OS console terminal device.
[0008]
[Problems to be solved by the invention]
Therefore, when the interface between the service processor and the OS console terminal device is interrupted, the transfer of the screen data fails and the system stops.
In addition, even when there is another terminal device whose interface with the service processor is normally connected, if the protocol of the terminal device is different from the protocol of the OS console terminal device, it cannot be used as a substitute device. There was a problem.
[0009]
The present invention provides a method for preventing the system from being stopped even when the interface between the service processor and the terminal device for the OS console is interrupted, so that the terminal device connected to the service processor can be controlled by the protocol of the OS console. It is an object of the present invention to provide a method that can be used as an alternative device of the OS console terminal device even if the protocol differs from that of the terminal device for OS console.
[0010]
[Means for Solving the Problems]
FIG. 1 is a diagram illustrating the principle of the present invention.
Reference numeral 10 denotes a main unit (hereinafter, abbreviated as “host”) that includes a central processing unit, a storage device, and a channel device and performs data processing.
Reference numeral 20 denotes a service processor (hereinafter abbreviated as “SVP”) that transfers screen data between the host 10 and the terminal device.
2A is a host order processing means for controlling the SVP 20 in response to a transfer request for screen data issued from the host 10 to the terminal device, and transmitting a report from the terminal device to the host 10;
2B is a maintenance diagnosis control unit that controls the diagnosis of the host 10 and controls the operation of the SVP 20;
24 is a screen holding means comprising a plurality of screen buffers for holding screen data displayed on the terminal device,
Reference numeral 25 denotes a terminal control information holding unit that holds terminal control information that associates a terminal device, a screen displayed by the terminal device, and screen data held by the screen holding unit,
, 3n are terminal control means for converting screen data into a protocol of the terminal device, transferring the data from the SVP 20 to the terminal device, and receiving a report issued from the terminal device;
A1, A2,..., Ak, B1, B2,..., Bk output the screen data transferred from the host 10 and the SVP 20, and transmit the input request from the operator to the host 10 and the SVP 20. It is a terminal device.
[0011]
FIG. 2 is a conceptual explanatory diagram of the present invention. In the figure, (1) to (9) are examples of information held in the terminal control information holding means.
{Circle around (1)} is a terminal ID section in which terminal IDs allocated for specifying each of the terminal devices A1,..., Bk are held.
{Circle around (2)} is a connection status unit that holds information regarding the connection status of the interface between the terminal device specified by the terminal ID unit <1> and the SVP 20;
(3) is a screen holding information indicating which screen of the screen information specified by the buffer ID section (6) is currently displayed by the terminal device specified by the terminal ID section (1). ID part,
(4) indicates that, when the screen buffer is specified by the terminal ID section (1) and the buffer ID section (6), the terminal ID for specifying the screen buffer transmitting the information transmitted as the information of the screen buffer is specified. The terminal ID part of the transmission source held,
(5) is that, when the screen buffer is specified by the terminal ID section (1) and the buffer ID section (6), the buffer ID for specifying the screen buffer transmitting the information transmitted as the information of the screen buffer is determined. The buffer ID part of the transmission source held,
{Circle over (6)} is a buffer ID section that holds information for specifying a screen buffer further divided into screen units from among the screen holding means divided for each terminal device,
{Circle around (7)} is a holding designation unit that holds information as to whether or not to hold screen data in the screen buffer;
(8) is a use (machine number) section in which information on the use (machine number) of the screen is held.
(9) is a display destination terminal that holds information for specifying a terminal device that displays screen data held in the screen buffer specified by the terminal ID unit (1) and the buffer ID unit (6). This is an ID part.
[0012]
[Action]
In the present invention, as shown in FIG. 2, when a transfer of screen data is requested by designating a transfer destination device from the OS, the application (machine number) section (8) of the terminal control information holding means 25 is read out, and the OS The block that matches the specification is selected.
Next, the holding designation section (7) of the block is referred to, and if it is designated to hold, the screen buffer is specified by the terminal ID section (1) of the block and the buffer ID section of the block. Data is stored. If the storage is not specified and if the storage is specified, the connection state of the interface of the terminal device specified by the terminal ID part (9) of the display destination of the block is stored. The information held in the connection status section (2) of the block is referred to to check the status. If the connection is established, the block is further updated to determine whether the screen being displayed can be updated. The screen ID part (3) and the buffer ID part (6) are compared.
[0013]
If they match, the screen data is transferred to the terminal device.
[0014]
【Example】
FIG. 6 is a functional configuration diagram of one embodiment of the present invention. In FIG.
21 is a CPU that controls the operation of the SVP 20 by a program stored in the MEM 22;
Reference numeral 22 denotes an MEM in which a program for controlling the operation of the SVP 20, screen data transferred to the terminal device, and terminal control information are stored and held.
Reference numeral 23 denotes a system bus of the SVP 20, which connects the CPU 21, the MEM 22, the main body I / O control adapter 2A1, the main body control adapter 2B1, the adapter A 3A1, and the adapter B 3B1 to each other.
The main unit I / O 2A1 operates the CPU 21 in response to a screen data transfer request from the host 10, and transmits requests and responses issued from the terminal devices A1, B1, and B2 to the host 10 according to instructions from the CPU 21. Control adapter,
2B1 is a main body control adapter that transfers data for diagnosis to the host 10 according to an instruction of the CPU 21 and receives diagnostic data transferred from the host 10. 3A1 transmits screen data to the terminal device A1 according to an instruction of the CPU 21. An adapter (hereinafter, abbreviated as "adaptor A") for transferring and operating the CPU 21 in response to a request issued from the terminal device;
An adapter 3B1 transfers screen data to the terminal device B1 or B2 in accordance with an instruction from the CPU 21 and operates the CPU 21 in response to a request issued from the terminal device B1 or B2. Abbreviated).
3A2 operates the CPU 21 to convert the screen data into the protocol of the terminal device A1, transfer the screen data to the terminal device A1 through the adapter A 3A1, and when receiving a request or response from the terminal device A1, Is a terminal control unit (hereinafter, abbreviated as “terminal control unit A”) that associates the terminal device A1 with a use (machine number) in the data processing system,
3B2 operates the CPU 21 to convert the screen data into the protocol of the terminal device B1, transfer the screen data to the terminal device B1 or the terminal device B2 through the adapter B 3B1, and request or receive the request from the terminal device B1 or the terminal device B2. When receiving the response, the terminal control unit (hereinafter referred to as “terminal control unit B”) that operates the CPU 21 to associate the terminal device B1 or the terminal device B2 with the use (device number) in the data processing system. Abbreviated)
2A2, upon receiving a screen data transfer request from the host 10, operates the CPU 21 to associate the screen data with the terminal device at the output destination, and sends the terminal device A1 or the terminal device B1 or the terminal device B2 to the host 10. A host order processing unit that transmits a request or a response to the host 10 through the main body I / O control adapter 2A1 when a request or a response is received;
An SVP operation control unit 2B2 controls the SVP 20 by operating the CPU 21 and controls transmission and reception of diagnostic data of the host 10 through the main body control adapter 2B1.
Reference numeral 26 denotes a screen unit including a plurality of screen buffers that hold screen data displayed on the terminal device A1, the terminal device Bl, and the terminal device B2;
Reference numeral 27 denotes a terminal control information unit that holds information that associates a screen displayed by each of the terminal devices A1, B1, and B2 with screen data held in the screen unit 26.
A1 displays screen data transferred from the host 10 and the SVP 20 on the screen, transmits an input request from the operator to the host 10 and the SVP 20, and uses a protocol different from that of the terminal devices B1 and B2. A terminal device (hereinafter abbreviated as “terminal device A”),
B1 displays screen data transferred from the host 10 and the SVP 20 on the screen, transmits an input request from the operator to the host 10 and the SVP 20, and, unlike the terminal device A A1, communicates with the terminal device B2. A terminal device having the same protocol (hereinafter abbreviated as “terminal device B”),
B2 displays the screen data transferred from the host 10 and the SVP 20 on the screen, transmits the input request from the operator to the host 10 and the SVP 20, and, unlike the terminal device A A1, the terminal device B1. A terminal device having a protocol equal to (hereinafter abbreviated as “terminal device C”),
The terminal control information held in the terminal control information unit 27 is based on FIG.
The information held in the terminal ID unit (1) and the information held in the buffer ID unit (6) are information determined in advance based on the system configuration.
The information held in the connection status part (2) is updated by reflecting the result of the polling that the SVP 20 periodically performs on the terminal equipment A A1, the terminal equipment B, and the terminal equipment B2. If an error is detected, it is set to be disconnected, and if it is detected that the interface has been restored to normal, it is set to be normal. The information held in the screen ID section (3) is the screen being displayed. Is information set by an operator's instruction from
Information held in each of the transmission source terminal ID section 4, transmission source buffer ID section 5, holding designation section 7, use (machine number) section 8, and display destination terminal ID section Is information set by an operator's instruction on the SVP console screen.
[0015]
FIG. 7 shows an example of using a terminal control unit, and FIG. 8 shows an example of terminal control information to be displayed on a screen on a plurality of terminals.
The operation when the screen data is transferred from the host 10 to the OS console terminal device (I / O device number 12) (when the interface is disconnected) will be described with reference to FIGS. 2, 3, 6, and 7. .
[0016]
(1) A screen data transfer request issued from the host 10 is received by the main body I / O control adapter 2A1, the CPU 21 is operated by the host order processing unit 2A2, and the terminal control information held in the terminal control information unit 27. The information (the information in FIG. 7) is read and held until the processing is completed.
(2) The host order processing unit 2A2 refers to the information held in the use (device number) unit (8) of the terminal control information, and the OS console (I / O device number 12) block [terminal ID: C, buffer ID: 3] is selected.
[0017]
(3) The host order processing unit 2A2 refers to the information [Yes] of the holding designation unit {7} of the block selected in (2), and since there is yes, the process goes to step (4) to save the screen data. move on.
(4) The screen data transferred from the host 10 by the host order processing unit 2A2 includes the information [C] stored in the terminal ID unit (1) of the block selected in (2) on the screen unit 26. , (2) are stored in the screen buffer specified by the information [3] held in the buffer ID part {circle around (6)} of the block selected.
[0018]
(5) The information [A, B, C] stored in the terminal ID part (1) of the terminal control information by the host order processing part 2A2 and the terminal ID part of the display destination of the block selected in (2) The information [H] stored in [9] is compared, and a matching block group [Terminal ID: H] is selected.
(6) The host order processing unit 2A2 refers to the information [disconnected] held in the connection status unit (2) of the block group selected in (5), and there is a disconnection, so that the screen data to the terminal device is transmitted. The transfer is not performed, and the process proceeds to (9).
[0019]
(9) The transfer success report is sent to the host 10 by the host order processing unit 2A2.
Next, FIG. 2, FIG. 3, FIG. 6, and FIG. 7 show the case where the screen data is transferred from the host 10 to the terminal device (I / O device number 11) used as the workstation (when the interface is normal). It will be described with reference to FIG.
[0020]
(1) A screen data transfer request issued from the host 10 is received by the main body I / O control adapter 2A1, the CPU 21 is operated by the host order processing unit 2A2, and the terminal control information held in the terminal control information unit 27. The information is read and held until the processing ends.
(2) The host order processing unit 2A2 refers to the information held in the use (machine number) unit (8) of the terminal control information, and obtains a block [terminal] serving as a workstation (I / O machine number 11). ID: Party A, buffer ID: 3] is selected.
[0021]
(3) The host order processing unit 2A2 refers to the information [Yes] of the holding designation unit {7} of the block selected in (2), and since there is yes, the process goes to step (4) to save the screen data. move on.
(4) The screen data transferred from the host 10 by the host order processing unit 2A2 corresponds to the information [A] held in the terminal ID unit (1) of the block selected in (2) of the screen unit 26. , (2) are stored in the screen buffer specified by the information [3] held in the buffer ID part {circle around (6)} of the block selected.
[0022]
(5) The information [A, B, C] stored in the terminal ID part (1) of the terminal control information by the host order processing part 2A2 and the terminal ID part of the display destination of the block selected in (2) The information [A] stored in [9] is compared, and a matching block group [terminal ID: A] is selected.
(6) The host order processing unit 2A2 refers to the information [normal] held in the connection status unit (2) of the block group selected in (5), and determines that it is normal, so that the screen data to the terminal device is transmitted. Proceed to (7) for transfer.
[0023]
(7) The information [3] held in the screen ID section [3] of the block group selected in (5) and the buffer ID section [3] of the block selected in (2) by the host order processing section 2A2. The information [3] held in 6 ▼ is compared, and since they match, the process proceeds to (8) for screen data transfer to the terminal device.
(8) The terminal controller A 3A2 converts the screen data transferred from the host 10 into the protocol of the terminal A, and transfers the screen data to the terminal A A through the adapter A3.
[0024]
(9) After waiting for a response from the terminal A, the host order processing unit 2A2 reports a successful transfer to the host 10. Note that, when the transfer failure is reported from the terminal equipment A1, the terminal controller A3A2 writes "disabled" in the connection status part (2) of the block group [terminal ID: A] selected in (5).
Next, a case in which a terminal device displaying a screen is changed from a terminal device used as an SVP console screen will be described with reference to FIGS. 2, 4, 6, and 7. FIG.
[0025]
(21) When there is a request from the terminal device B1, the adapter B3B1 accepts the request, the terminal control unit B3B2 reads the terminal control information from the terminal control information unit 27, and holds the terminal control information until the end of the process.
(22) The terminal control unit 3B2 refers to the information [A, B, and Hei] held in the terminal ID unit (1) in the terminal control information, and a block group [Terminal] corresponding to the terminal device B1 ID: Party B] is selected.
[0026]
(23) The information [1] held in the screen ID section (3) in the block group selected in (22) by the terminal control section 3B2 and the information stored in the block group selected in (22). Is compared with the information [1, 2, 3] held in the buffer ID section {circle around (6)}, and a matching block [terminal ID: second, buffer ID: 1] is selected. Further, information [2] held in the terminal ID part (4) of the transmission source of the matching block and information [1] held in the buffer ID part (5) of the transmission source of the matching block And are held.
[0027]
(24) The information [A, B, C] stored in the terminal ID section (1) in the terminal control information by the terminal control section B3B2 and the transmission source terminal ID section stored in (23) The information [Otsu] held in [4] is compared, and a matching block group [Terminal ID: Otsu] is selected.
(25) The information [1, 2, 3] held in the buffer ID section (6) in the block group selected in (24) and the information held in (23) by the terminal control section B3B2. The information [1] held in the buffer ID part (5) of the transmission source is compared, and a matching block [terminal ID: second, buffer ID: 1] is selected.
[0028]
(26) Since the information [SVP console] held in the application (machine number) section (8) of the block selected in (25) is referred to by the terminal control section B3B2, the screen is the SVP console screen. The CPU 21 is operated by the SVP operation control unit 2B2, and the terminal ID [9] of the display destination of the block specified by the terminal ID [1] specified from the SVP console screen and the specified buffer ID [6]. Is rewritten to the information specified from the SVP console screen.
[0029]
Next, a case where screen data is transferred from the host 10 to a terminal device (I / O device number 13) used as a workstation (display on a plurality of terminal devices) will be described with reference to FIGS. , Will be described with reference to FIG.
(1) A screen data transfer request issued from the host 10 is received by the main body I / O control adapter 2A1, the CPU 21 is operated by the host order processing unit 2A2, and the terminal control information held in the terminal control information unit 27. The information is read and held until the processing ends.
[0030]
(2) The information stored in the application (machine number) unit (8) of the terminal control information [SVP console, workstation (I / O machine number 11), workstation (I / O) by the host order processing unit 2A2. 13) and the OS console (I / O device number 12)], and a work station (I / O device number 13) and a retained block [terminal ID: B, buffer ID: 2] are selected. You.
[0031]
(3) The host order processing unit 2A2 refers to the information [present] held in the holding designation unit {7} of the block selected in (2), and saves the screen data because it is found that (4) Go to step).
(4) The screen data transferred from the host 10 by the host order processing unit 2A2 is stored in the screen unit 26 with the information [B] held in the terminal ID unit (1) of the block selected in (2). , (2) are stored in the screen buffer specified by the information [2] held in the buffer ID part {circle around (6)} of the block selected.
[0032]
(5) The information [A, B, C] stored in the terminal ID part (1) of the terminal control information by the host order processing part 2A2 and the terminal ID part of the display destination of the block selected in (2) The information [A, B] held in [9] is compared, and a matching block group [terminal ID: A, B] is selected.
(6) The host order processing unit 2A2 refers to the information [terminal ID: A, normal] [terminal ID: second, normal] held in the connection status unit (2) for each of the block groups. If there is a block group in which the information held in the connection status unit (2) is not connected, the processing relating to the unconnected block group ends at that point and the process proceeds to (9). In the case of this example, since both are normal, the process proceeds to (7).
[0033]
(7) The information [terminal ID: Party A, 2] [terminal ID: Party B, which is held by the host order processing section 2A2 in the screen ID section (3) of each of the two block groups selected in (5). [1] is compared with the information [2] held in the buffer ID part {circle around (6)} of the block selected in (2), and a matching block is selected. In this case, the terminal ID part (1) is the same for both Party A and Party B.
[0034]
(8) The terminal controller A 3A2 converts the screen data transferred from the host 10 into the protocol of the terminal A A1 and transfers it to the terminal A A1 through the adapter A 3A1. Also, the screen data transferred from the host 10 is converted into the protocol of the terminal device B1 by the terminal control unit 3B2 and transferred to the terminal device B1 through the adapter B3B1.
[0035]
(9) After waiting for reports from the terminal equipment A1 and the terminal equipment B1, the host order processing unit 2A2 reports success of the transfer to the host 10. If one or both of the terminal device A A1 and the terminal device B B1 report a transfer failure, "disabled" is written in the connection status part (2) of the corresponding block group.
Next, screen data transfer processing when the interface of the terminal device B2 is restored will be described with reference to FIGS. 1, 2, 5, and 7. FIG.
[0036]
(41) The terminal control unit 3B2, which has detected the restoration of the interface with the terminal device B2 by polling, reads the terminal control information [FIG. 7] from the terminal control information unit 27 and holds it until the processing is completed.
(42) The terminal control unit B3B2 refers to the information [A, B, and Hei] held in the terminal ID unit {1} in the terminal control information, and selects a block group corresponding to the terminal device B2. Is done. In addition, "normal" is written in the connection state part (2) of the block group.
[0037]
(43) The information [3] held in the screen ID unit (3) of the block group selected in (42) and the buffer ID unit (6) of the block group selected in (42) by the terminal control unit 3B2. The information [1, 2, 3] held in ▼ is compared, and a matching block is selected.
(44) The terminal control unit 3B2 refers to the information [C] held in the terminal ID unit [4] of the transmission source of the block [terminal ID: C, buffer ID: 3] selected in (43). If the information is not held, the process ends. In this case, since the information is held, the information [He] held in the terminal ID part (4) of the source of the block and the information held in the buffer ID part (5) of the source of the block are stored. [3] is held and the process proceeds to the next step.
[0038]
(45) The terminal control unit Otsu 3B2 compares the information [A, O, H] held in the terminal ID unit {1} in the terminal control information with the information [terminal ID: H] held at (44). Are compared, and a matching block group is selected.
(46) The information [1, 2, 3] held in the buffer ID section (6) in the block group selected in (45) by the terminal control section B3B2 and the buffer ID held in (44) Is compared with [3], and a matching block [terminal ID: C, buffer ID: 3] is selected.
[0039]
(47) The information held in the holding designation unit (7) of the block is referred to by the terminal control unit 3B2, and if there is no information, the process is terminated. In this case, since it is present, the process proceeds to the next step.
(48) The information [C] held in the terminal ID unit (4) of the transmission source held at (44) in the screen unit 26 by the terminal control unit 3B2 and the buffer ID unit (5) of the transmission source The screen data held in the screen buffer specified by the information held in ▼ is read and transferred to the terminal device B2.
[0040]
【The invention's effect】
As described above, according to the present invention, by maintaining the screen data in the service processor, the processing of the main device can be continued normally even when the transfer is not successfully received by the terminal device. Also, there is an effect that the terminal device connected to the service processor can be used for an application requiring a different protocol as needed,
It greatly contributes to improving the operability of the data processing system and reducing the installation cost.
[Brief description of the drawings]
FIG. 1 is a principle diagram of the present invention.
FIG. 2 is a conceptual explanatory view of the present invention.
FIG. 3 is a flowchart of screen data transfer processing.
FIG. 4 is a flowchart of a request source device identification process for a request from a terminal device;
FIG. 5 is a flowchart of a process of transferring screen data to a terminal device when the interface is restored.
FIG. 6 is a functional configuration diagram of an embodiment of the present invention.
FIG. 7 shows an example of using a terminal control information section.
FIG. 8 shows an example of terminal control information to be displayed on a screen on a plurality of terminals.
[Explanation of symbols]
10 Main unit (abbreviated as "host")
20 Service Processor (abbreviated as "SVP")
21 CPU
22 MEM
23 System bus
24 Screen holding means
25 Terminal control information holding means
26 Screen section
27 Terminal control information section
2A Host order processing means
2A1 Main body I / O control adapter
2A2 Host order processing unit
2B Maintenance diagnosis processing means
2B1 Body control adapter
2B2 SVP operation control unit
3A, 3B,..., 3n terminal control means
3A1, 3B1 adapter
3A2, 3B2 Terminal control unit
A1, ..., Ak terminal device
B1, ..., Bk terminal device

Claims (1)

In a data processing system including a main unit, a service processor for performing maintenance diagnosis of the main unit and transferring data between the main unit and the terminal unit, and a terminal unit, control of the terminal unit is performed through the service processor. A terminal control method,
A step of holding screen data to be transferred from the main device to the terminal device by a screen holding means provided in the service processor ;
A step of holding information on a connection state of an interface between the terminal device and the service processor by terminal control information holding means provided in the service processor;
When the screen data is transferred from the main unit to the terminal device, the screen data is temporarily held in the screen holding unit, and the screen data is transferred only when the interface is connected with reference to the terminal control information holding unit. and line cormorant step,
Reporting to the main unit that the transfer of the screen data has been completed normally irrespective of whether or not the transfer of the screen data to the terminal device has been completed normally ;
A method for controlling a terminal by a service processor, comprising:

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