JPH01303560A - Detecting system for loss of inter-host information - Google Patents

Abstract

PURPOSE:To effectively detect the loss of information between the global job- related hosts by storing the global job executing information via a global host and writing this executing information under execution into a control file via a local host. CONSTITUTION:A global host 100 allocates a global job executing information area 411 which stores the global executing information to a global job executing information memory part 117 at execution of a global job. While a local host 200 writes the global job executing information under execution into a control file 400. Then the host 100 reads out the contents of the file 400 via a control file member exclusive process control means 300. Then a retrieving means retrieves the contents of the part 117 based on the global job identifying information and a setting means sets the output of a reading means at the part 117 based on the retrieving result. Then a detecting means detects the loss of the information between both hosts to the global job executing information by reference to the contents of the part 117 according to the reading end information. Thus the loss of the information can be effectively detected between the global job-related hosts.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is utilized in a method for detecting loss of notification between hosts in a multi-host system. In particular, in a multihost system consisting of one global host and one or more local hosts, job-related notifications between hosts, such as global job execution request notifications to local hosts and execution completion notifications from local hosts, are This invention relates to a method for detecting loss of inter-host notification for efficiently detecting loss.

〔overview〕

In the inter-host notification loss detection method, the present invention sets and manages global job execution information that is being executed by the local host in the storage unit of the global host via a control file. This makes it possible to efficiently detect.

[Conventional technology]

Conventionally, the loss of notification between hosts was not specifically checked, and its detection was left to the communication means. That is, it was not possible to detect loss of notification due to causes outside the range that could be detected by this means (system down after transmission/reception, area overflow, etc.).

[Problem that the invention seeks to solve]

However, with such a conventional inter-host notification loss detection method, there may be cases in which the loss of job execution request notifications, execution completion notifications, etc. is not detected.

In this case, there are problems such as the requested job is not executed, and the release process is not performed so that wasted resources remain.

The present invention solves the above-mentioned drawbacks, and aims to provide an inter-host notification loss detection method that can efficiently detect the loss of global job-related inter-host notifications.

[Means for solving problems]

The present invention includes a global host that includes a means for processing a global job execution request and execution termination process, and one or more local hosts that includes a means for executing a global job based on the execution request and notifying the execution termination. , an inter-host notification loss detection method comprising a control file shared by the global host and the local host, comprising means for exclusively controlling access to the control file by the global host and the local host, the global host , a storage unit that stores global job execution information, and a means for performing the above processing.
means for allocating an area for storing execution information of a global job in accordance with instructions when executing a global job to the storage unit, wherein the local host stores the execution information of the global job being executed in the control file via the means for exclusive control. The global host includes means for reading the contents of the control file via the means for exclusive control, and searching the contents of the storage unit based on global job identification information of the reading means. means for setting the output of the reading means in the storage section based on the search result of the searching means; and execution of a global job by referring to the contents of the storage section upon notification of the completion of reading from the reading means. and means for detecting loss of host-to-host notification of information.

[Effect]

The global host allocating means allocates an area for storing execution information of the global job in the storage section according to instructions from the processing means.

The writing means of the local host writes the execution information of the Glow Noil job being executed to the control 7 airway via the means for exclusive control. The reading means of the global host reads the contents of the control file through exclusive control means. The searching means searches the contents of the storage unit based on the global job identification information of the reading unit, and the setting unit sets the output of the reading unit in the storage unit based on the search result. The detecting means refers to the contents of the storage unit in accordance with the reading end notification from the reading means to detect loss of inter-host notification for global job execution information. With the above operations, loss of global job-related host-to-host notification can be efficiently detected.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of a device for detecting loss of notification between hosts according to an embodiment of the present invention. In FIG. 1, the inter-host notification loss detection device includes global job execution request processing means 111 and global job termination processing means 113 as means for processing global job execution requests and execution termination.
A control file shared by the global host 100 and the local host 200 that includes the job execution processing means 213 as a means for executing the global job based on this execution request and notifying the end of execution. 400.

Here, the feature of the present invention is that the control file 40 of the global host 100 and the local host 200
A control file member exclusive processing control means 300 is provided as a means for exclusively controlling access to 0, and a global job execution information storage section 117 is provided in the global host 100 as a storage section for storing global job execution information.
A global job execution information allocating means 112 and a global job execution information area release means 1 are used as means for allocating an area for storing execution information when a global job is executed to the global job execution information storage section 117.
14, the control file global job execution information is stored in the local host 200 as means for writing the execution information of the global job being executed into the global information execution area 411 of the control file 400 via the control file member exclusive processing control means 300. 100 includes a global job execution area 41
Control file member exclusive processing control means 300
The control file global job execution information reading means 115 serves as a means for reading out the contents of the global job execution information storage unit 117 based on the global job identification information of the control file global job execution information reading means 115. Execution information search means 116 and global job execution information search means 1
Global job execution information setting means 118 serves as means for setting the output of global job execution information reading means 115 in global job execution information storage section 117 based on the search results of 16, and global job execution information setting means 118 is used as a means for setting the output of global job execution information reading means 115 in global job execution information storage section 117 based on the search result of global job execution information reading means 115. Information area search means 11
The global job execution information reference means 119 serves as a means for referring to the corresponding contents of the global job execution information storage section 117 via the global job execution information storage section 117 via the global job execution information storage section 117 via the control file global job execution information reading means 115 as a means of referencing the corresponding contents. A notification loss detection means 120 is included as a means for detecting loss of inter-host notification for global job execution information by referring to the contents of .

The operation of the inter-host notification loss detection device having such a configuration will be explained. FIG. 2 is a flowchart showing the global job execution information setting processing operation of the global host of the inter-host notification loss detection device of the present invention. FIG. 3 is a flowchart showing the global job execution information setting processing operation of the local host of the inter-invention notification loss detection device of the present invention. FIG. 4 is a flowchart showing the global job notification loss detection processing operation of the inter-host notification loss detection device of the present invention.

In FIG. 1, when executing a global job on the local host 200, the local host 200
When making a request to that effect, the global job execution request processing means 111 sends a request to the global job execution information area allocation means 1.
12, and the global job execution information storage unit 117
Allocate an area on top to set execution information about the global job.

This area can be searched using the global job execution information area search means 116 using the global job identification number, and the global job execution information is retrieved by the global job 1 completion processing means 113 upon receiving a notification from the local host 200 at the end of execution. The area release means 114 is activated and released.

In FIG. 3, in the local host 200 that has started executing the global job in response to the execution request from the global host 1oo, the timer L monitors the time (S21
), or triggered by a change in the execution state, the control file global job execution information writing means 211 is activated (S22).

Control file global job execution information writing means 211
uses the control file member exclusive processing control means 300 to operate exclusively with the global host 100 for the global job execution information area 411 (323).

Control file global job execution information writing means 211
is local host 200 for execution job 212
The execution information managed by the control file 400 is acquired and written to the global job execution information area 411 as one of the members of the control file 400 (S24). If all writing is not completed (S25), set timer L (S26).
Return to step S21.

In FIG. 2, in the global host 100 that has requested the local host 200 to execute the Hegelow job, the control file global job execution information reading means 115 is activated by time monitoring of the timer G.

Control file global job execution information reading means 115
is control file global job execution information writing means 2
11, control file member exclusive processing control means 3
By using 00, the global job execution information area 411 operates exclusively with the local host 200 (312).

Also, read the global job execution information stored as one of the members from the control file 400 (513).
, activate the global job execution information area search means 116 using the job identification number obtained there as a key to search for the global job execution information area assigned to this global job (514), and activate the global job execution information setting means 118 The execution information of this global job is stored in the global job execution information storage unit 117.
(S15). At this time, a flag indicating that execution information has been set is set on the execution information setting area of this global job. This flag is used by the notification loss detection means 120 to determine whether execution information is set at that time. If all reading is not completed (316), timer G is set (S17) and the process returns to step 311.

Through the above processing, the global host 100 can set the latest execution information regarding the global job being executed on the local host 200 in the global job execution information storage unit 117.

The global job execution information reference means 119 that refers to the set information is activated upon generation of a reference request.

The global job execution information reference means 119 checks the host on which the job for which execution information has been requested is being executed, and if it is the global host 100, the job execution information that is conventionally managed on the own host is checked. Make a reference. However, if this job is being executed on the local host 200, it is necessary to refer to the global job execution information storage unit 117. The global job execution information reference means 119 uses the given job identification number as a key to search the global job execution information area search means 1.
16 and returns the requested global job execution information.

Further, the notification loss detection means 120 is activated after the contents of all the control file global job execution information areas 411 are set by the control file global job execution information reading means 115.

The notification loss detection means 120 sequentially checks each global job execution information setting area (531) and performs the following process.

First, the information setting flag set by the global job execution information setting means 118 is checked, and if new execution information is set (S32), it is determined that there is no notification loss;
Turn off this flag and move on to processing for the next job. If new execution information has not been set (S
32) Update the counter for checking the time when execution information is not set. global host 10
Since this means in 0 operates at fixed time intervals by timer monitoring, the time can be determined from the number of times no new information has been set. If this becomes longer than a predetermined time (S33), it is determined that there is a possibility of notification loss, and the relevant job information in the management file (the status of each job not shown in Figure 1) is (S34). If this is before the start of execution, the execution request notification to the local host 200 has been lost, so execution request processing is performed again (S3
5). Similarly, if it has been terminated, loss of termination notice (
If an error has occurred (S36), this means that the error notification has been lost (S37), and the corresponding processes are performed.

This process is performed for all jobs requesting the local host 200 to execute, and checks for loss of job-related host-to-host notifications.

〔Effect of the invention〕

As explained above, the present invention has the excellent effect of being able to quickly and reliably refer to the execution information of a global job being executed on a local host, and efficiently detecting the loss of global job-related host-to-host notifications. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an inter-host notification loss device according to an embodiment of the present invention. FIG. 2 is a flowchart showing the global job execution information setting processing operation of the global host of the inter-host notification loss device of the present invention. FIG. 3 is a flowchart showing the global job execution information setting processing operation of the local host of the inter-host notification loss device of the present invention. FIG. 4 is a flowchart showing the global host notification loss detection processing operation of the inter-host notification loss device of the present invention. 100...Global host, 111...Global job execution request processing means, 112...Global job execution information area allocation means, 113...Global job termination processing means, 114...Global job execution information area release Means, 115...Control file global job execution information reading means, 116...Global job execution information retrieval means, 117...Global job execution information storage section, 118...Global job execution information setting means, 119. ...Global job execution information reference means, 120...Notification loss detection means, 200...
Local host, 211... Control file global job execution information writing means, 212... Execution job, 2
13... Job execution processing means, 300... Control file member exclusive processing control means, 400... Control file, 411... Global job execution information area.

Claims (1)

[Claims] 1. A global host (100) including means (111, 113) for processing a global job execution request and execution termination process, and a global host (100) that executes the global job based on the execution request and notifies execution termination. In the inter-host notification loss detection method comprising one or more local hosts (200) including means (213) for performing the above, and a control file (400) shared by the global host and the local host, Means for exclusive control of access to the control file by the local host (3)
00), the global host includes a storage unit (117) for storing global job execution information, and means for allocating an area for storing the execution information when executing the global job to the storage unit according to instructions from the means for performing the processing. (112, 11
4), the local host includes means (211) for writing execution information of a global job being executed into the control file via the exclusive control means, and the global host writes means (115) for reading the contents via the means for exclusive control; means (116) for searching the contents of the storage section based on the global job identification information of the reading means; and searching for the contents of the searching means. means (118) for setting the output of the reading means in the storage section based on the result; and a means (118) for setting the output of the reading means in the storage section; means (120) for detecting loss of notification between hosts.