JPS62123539A - Host cabinet access method from workstation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] A cabinet (
files) can be accessed from a local-mode workstation operating independently of the host without requiring a mode switch.

[Industrial application field]

The present invention relates to a file management method by a workstation in a data processing system, and particularly to a processing method for accessing a cabinet on a host disk device from a workstation.

[Conventional technology]

In a system in which a plurality of workstations are connected to one host, each workstation may perform its own data processing and data processing common to the system.

In such cases, traditionally.

The workstation has two operating modes: local mode and host mode, and allows users to switch between modes to execute each process.

In some systems, data shared by users of each workstation is stored and managed in a host disk device in a file format called a cabinet. Any user can create and delete cabinets from the workstation, and access data such as storing, referencing, and deleting data on cabinets.

FIG. 3 schematically illustrates the cabinet processing executed by the workstation in host mode and local mode.

In such systems, users perform their own processing using data in the host's cabinet.
If you store the results in a cabinet, when you need the data while processing in local mode, you can switch your workstation to host mode, bring up the host (system) screen on the workstation display, and interact with the host. Transfer the necessary cabinet data from the host to the workstation as the primary.

Switch the workstation to local mode, call up the application execution screen on the workstation display, execute processing using the data imported from the cabinet, and when finished, switch the workstation to host mode again to display the processing results. A process is performed to store the data in the host's cabinet.

Thus, in host mode, the workstation functions as an input/output terminal for the host.

In local mode, it is separated from the host and functions as an independent processing system.

[Problem that the invention seeks to solve]

In the conventional method of accessing a host cabinet from a workstation operating in host mode or local mode, it was necessary to always be aware of the workstation's operating mode and perform mode switching operations before and after accessing the cabinet. As a result, operations take time and effort, and the local mode processing screen is interrupted, resulting in a reduction in processing efficiency.

[Means for solving problems]

The present invention provides a means for performing cabinet access without changing the mode and maintaining the local screen when cabinet access is required while the work stage engine is operating in local mode. .

Therefore, in the present invention, when a file device name is input for input/output processing while a workstation is operating in local mode, the file device name identifies whether a local file in the workstation is a host cabinet, and If the name points to the host's cabinet, the necessary access request is made to the host.

FIG. 1 shows the basic structure of the present invention in an exemplary manner.

In the figure, 10 is a host, 11, 12, 13 are work stations, and 14, 15, 16 are communication diagrams! bL 10
1 is a host disk device, 102 is a cabinet, 10
3 is a host file management section, 104 is a host file access processing section, 111 is a keyboard/display, 1
12 is an application processing unit.

113 is a device name identification section, 114 is a local file management section, 115 is a local disk device, 116 is a host file access request section, and 117 is a mode flag.

Workstations 11 to 13 are connected to the host 10 via two communication lines 14 to 16, respectively.

Each of the workstations 11-13 has two modes of operation, a local mode and a host mode, for example using dedicated control keys provided on the keyboard/display 111.

Switching is controlled. The operating mode is mode flag 11.
Set to 7.

The host disk device 101 of the host 10 has a cabinet 1 created in response to a request from a workstation.
02 is provided and managed by the host file management unit 103.

The host file access processing unit 104 receives a processing request frame regarding the cabinet from each workstation, analyzes it and notifies the file management unit, and also assembles and transmits a frame to be responded to each workstation.

The host file management unit 103 is a host file management unit W.
Creating and deleting cabinets on 101, registering data,
Performs logical and physical management to enable access processing such as reference and deletion.

In addition, the configuration of workstations 11, 12, and 13 is as follows:
1 will be representatively explained. The application processing unit 112 is functionalized with the mode flag 117 set to local mode.

The input/output screen of the application program that the user wants to execute is displayed on the display.

The device name identification unit 113 includes a keyboard/display 11
Regarding the device name of the file input from 1.

It is determined whether the file belongs to the own workstation or the host, and the local file management unit 114 or the host file access request unit 116 is activated according to the result.

The local file management unit 114 manages local files on the local disk device 115 and performs input/output processing of instructed data.

The host file access request unit 116 creates a processing request frame for data registration, reference, deletion, etc. regarding the host's cabinet, sends it to the host 10, and extracts the cabinet file data from the complaint responded from the host 10.

Make available.

(Operation) According to the present invention, the workstation can perform all cabinet access processing, including creation and deletion of cabinets, in local mode.

〔Example〕

FIG. 2 shows one embodiment of the present invention. The configuration shown in FIG. 2 uses the main parts of the configuration shown in FIG. 1 as is.

The figure shows a specific example of a series of processing steps for searching a host cabinet from a workstation and outputting the search result data in a list form.

(2) Input the name of the file device in which the cabinet to be searched is stored to the application processing unit 112 from the keyboard/display 111;

In this example, the logical cabinet name SVR is used as the file device name.

■Identifies this as a host cabinet from the file device name SVR input to the application processing unit 112, creates a search request frame (frame format is predetermined), and hosts file access request unit 116 Request to send.

(2) The host file access request unit 116 adds necessary information to the search request frame to complete the frame and sends it to the host 10.

■The host file access processing unit 104 of the host 10 N-folds the received frame.

■ Access the cabinet 102 of the host disk device 101 via the host file management unit 103.

■Execute the search process.

■Create a response frame for the search result data and send it to the workstation 11.

Note that the cabinet 102 of the host disk device 101
As shown in Figure 1, the management file consists of a management file and data pointed to by the management file. pointer is registered.

(2) The host file access request unit 116 of the workstation 11 receives the response frame from the host, analyzes it, and notifies the application processing unit 112 of the search data.

(2) The application processing unit 112 tabulates the search data responded from the host and displays it on a display.

In the same way, you can register file data from the workstation to the cabinet, or delete file data from the cabinet.

By inputting the file device name, identifying the file device in the abbling processing unit, and separating it, execution can be performed in local mode.

〔Effect of the invention〕

According to the present invention, while the workstation is operating in local mode, the user can perform processing only on the local screen without being aware of the existence of the host, resulting in improved operability and efficiency. can be achieved.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram of the present invention, FIG. 2 is an explanatory diagram of one embodiment of the present invention, and FIG. 3 is a schematic explanatory diagram of cabinet processing. In Figure 1. 10: Host 10i: Host disk device 102: Cabinet 11: Workstation 111: Keyboard/display 112: Application processing section 113: Device name identification section

Claims (1)

[Claims] In a data processing system in which a host (10) manages data of a workstation (11) using a cabinet provided on its own file device, the workstation (11) is a host for interacting with the host. The workstation (11) has two operating states: mode and local mode in which the workstation independently executes application processing.When a file device name is input while operating in local mode, the workstation (11) from a workstation characterized in that it identifies whether the file device belongs to the workstation (10) or the file device of the host, and in the latter case, executes cabinet access request processing to the host (10). host cabinet access method.