JPH02100161A - Information processor - Google Patents

Abstract

PURPOSE:To obtain an information processor with high reliability and superior fault resistance by managing path control more in detail by providing a path managing control means which judges whether or not information transfer abnormality exceeding a regulated value occurs. CONSTITUTION:The information processor is provided with the managing control means for paths 31-34 which monitors the count values of counter means 22 and 23 and fault history display means 20 and 21 and judges whether or not the information transfer abnormality exceeding the regulated value occurs. And in the path control, path use number of times information and path abnormality number of times information corresponding to each of the paths 31-34 are stored 12 as fault history information, and an abnormality occurrence ratio in the number of time of use of the path regulated in advance is judged 11, and the path with high occurrence frequency of abnormality is suppressed from being used as designating as a faulty path. In such a way, it is possible to eliminate a defect to disable the use of the path due to the information transfer abnormality generated by a temporary fault, and to construct an information processing system with high reliability and superior fault resistance.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an information processing device in an information processing system, and particularly to route control for transferring information between an information processing device and peripheral devices connected by a plurality of routes. Regarding the method.

[Background Art] In recent years, the importance of information processing systems has become extremely large, and there has been a need for information processing systems with excellent reliability and fault tolerance. One way to increase reliability and fault tolerance is to connect the devices that make up an information processing system using multiple paths, so that even if a failure occurs in one path, the other paths can be used as an alternative path. However, there are information processing systems that have a redundant configuration that allows the processing of the entire information processing system to continue.

Conventionally, in the route control method for this type of information processing system, when an information processing device detects a failure during information transfer processing, retry processing is performed several times on the same route. If the transfer is not successful after a number of retries, the system is configured to determine that route as a failed route, suppress the use of that route from now on, and retry the information transfer using an alternative route. There is. If information cannot be transferred using an alternative route, it is common to assume that the route or the device itself is at fault.

FIG. 2 is a block diagram showing the configuration of a conventional processing system.

In FIG. 2, the information processing device 1 and the peripheral device 2.3 are connected by two paths 31.33 and 32.34, respectively. The information processing device 1 includes a main control unit 11 that performs overall control of route selection and information transfer, a storage unit 12 that stores transfer information, and a peripheral device 2.3 via a route 31.33 or 32.34. It has transfer control units 13 and 14 that perform interface control with the transfer control units 13 and 14, and a transfer status monitoring unit 15 that monitors whether or not the interface control performed by the transfer control units 13 and 14 is performed normally. Part 1B
, 14, the paths 31, 33 or 32.
Path activation control for indicating the effectiveness of 1.6.
17, and path 31. ．． 33 or 32.34.

In such an information processing device, is there a monarchy? When the MJ section 11 transfers the information in the storage section 12 to the peripheral device 2, it first checks the status of the path activation control sections 16 and 17. Depending on the state of the path activation control section 1.6.17, the path 31.3
If all three are valid, the main control unit 11 selects a route based on a predefined procedure. When path 31 is selected, main control section 11 instructs transfer control section 13 to transfer the information in storage section 12 to peripheral device 2 via path 31. The transfer status in the transfer control unit 13 is as follows:
It is monitored by the transfer status monitoring unit 15, and the main control unit 1
1 checks the transfer status monitoring unit 15 to determine whether information transfer using the path 31 has been performed normally. If the information on the path 31 is abnormal, the main control unit 11 updates the retry counter 18 and checks whether the retry counter 18 has reached a predetermined number of times. The main control unit 11 has a retry counter 1
The information transfer process described above is repeatedly retried until 8 reaches the specified number of times. If the information transfer is performed normally during the retry, the main control unit 11 initializes the retry counter 18 and performs the next process. If normal information transfer is not performed during retry, an instruction is issued to the route activation control unit 16, and the route 31 is set to #.
Suppress future use as iF. Next, the main control unit 11 performs the same process on the path 33 as on the path 31. If the use of both paths 31 and 33 is suppressed, it is determined that the peripheral device 2 itself is at fault due to a path failure.

[Problems to be Solved by the Invention] In the conventional route control method of the information processing device described above, - even if a route abnormality occurs due to a failure that occurs from time to time, the route may be inhibited and become unusable. This method has the disadvantage of limiting the number of routes that can be used.

The object of the present invention is to improve the above-mentioned drawbacks I21. An object of the present invention is to provide an information processing device with excellent reliability and fault tolerance by managing route control in more detail.

[Means for Solving the Problems] The information processing device according to the present invention improves the control means of the conventional information processing device, and includes route activation control means for displaying the effectiveness of the selected route, and peripheral devices. a transfer control means that transfers information between them; a transfer status monitoring means that monitors the information transfer processing operation; and, if the information transfer processing is normal, the number of times the route used in the information transfer performed by the transfer control means is used. a failure history display means for counting the number of processing times when the information transfer processing becomes abnormal;
Monitoring the counts of the counting means and failure history display means,
and route management control means for determining whether an information transfer abnormality exceeding a specified value has occurred.

[Example] Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block configuration diagram showing the configuration of an information processing apparatus according to an embodiment of the present invention.

In FIG. 1, an information processing device 1 and a peripheral processing device 2.3
are connected by two paths 31, 33 and 32° 34, respectively. The information processing device 1 has routes 31, 32, 33, .
34 selection and overall control of information transfer.
, a storage unit 12 that stores transfer information, and paths 31 and 32
, 33.34, and a transfer control unit 13.14 that performs interface control with the peripheral devices 2 and 3 via the transfer control unit 1.
3. The transfer state monitoring unit 15 monitors whether the interface control performed in step 14 is performed normally.

The information processing device 1 also includes a route activation control unit 16, 17 and a route activation control unit 16, 17 for instructing the validity of the routes 31, 32, 33, 34, corresponding to each of the transfer control units 13, 14.
．． 33. What are the retry counters 18 and 19 that display the number of retries in 34, the failure history display section 20 and 21, which are the features of the present invention, and the route use number counter sections 22 and 23?

In this configuration, the basic information transfer control processing is performed in the same way as in the conventional device, but there is a difference in the validity determination of the outward route. The operation of the information processing apparatus of the present invention will be described below. When the main control section 11 transfers information in the storage section 12 to the peripheral device 2, the states of the path activation control sections 16 and 17 are first investigated. If both routes 31 and 33 are valid depending on the states of the route activation control units 16 and 17, the control unit 11 selects the route based on a predefined procedure.

When path 31 is selected, main control unit 11 transfers control unit 1
3 to transfer the information in the storage section 12 to the peripheral device 2 via path 3]. The transfer status in the transfer control unit 13 is monitored by the transfer status monitoring unit 15,
The main control unit 11 checks the transfer status monitoring unit 15 and
It is determined whether the information transfer using the was performed normally. If the information on the path 31 is abnormal, the main control unit 11 updates the retry counter 18 and checks whether the retry counter 18 has reached a predetermined number of times. The main control unit 11 repeatedly retries the information transfer process described above until the retry counter 18 reaches a predetermined number of times. If the information transfer is successful or if the information transfer is successful in a retry, the retry counter 18 is initialized, the route usage count counter 22 is counted, and then the next process is performed. continue.

If information transfer is not performed normally during a retry, path 3] was conventionally treated as a failure path and its future use was inhibited, but in this information processing device 1, the main control unit 11 transfers the failure history display In step 20, information on the number of retry failures indicating that a retry has failed is counted, and the route 31 is not inhibited.

Next, the control unit 11 performs information transfer processing on the alternative route 33 in the same way as the processing on the route 31. When information is transferred normally through the path 33, the main control unit 11 determines that there is a possibility of a failure in the path 31, and registers failure display information in the failure history display unit 20.

In this state, the main control unit 11 does not inhibit the use of the route 31, but continues the effective state.

When the main control unit 11 selects the route 31 again to transfer information in another information transfer process, a transfer error occurs, and the route 3
If the recovery does not occur even after the retry in step 1, the route use count counter 22 counts and the failure history display unit 20 counts the number of failed retries as described above, but the failure history display unit 2
If the route has failure display information registered in 0, the main control unit 11 refers to the usage frequency information in the route usage frequency counting unit 22 and the retry failure frequency information in the failure history display unit 20, and determines whether the route is used. Investigate the frequency of failure occurrence relative to the number of times. In the case of the information processing device of this embodiment, the number of times of use is 16, while
If the failure occurs four times, it is determined that there is a path abnormality. When the main control unit 11 determines that the route 31 is a failed route, it instructs the route activation control unit 16 to inhibit the use of the route 31.

This process of the main control unit 11 is carried out by
The path 3 to the peripheral device 2 is also implemented in the same manner.
When the use of the two routes 1 and 33 is inhibited, the transfer of the peripheral device 2 becomes impossible, so the use of the first route 31 is inhibited, but the use of route 33 is not immediately inhibited, and the transfer of the peripheral device 2 is disabled. You are given an opportunity to try again. The main control unit 11 executes the process so that the process continues even if the path 33 is used up to 7 times out of 16 times due to abnormal transfer. If failure occurs in route 33 more than 8 times out of 16 times, route 3
3 cannot be tolerated, the use of the path 33 is inhibited, and the peripheral device 2 is disconnected.

The route use count counters 22 and 23 are configured to increment the count value 0 by 1, and when the count value exceeds 16, return to the count value 0 again.

The fault display information in the fault history display section 20.21 is set and canceled by the main control section 11, and the setting is performed when an abnormality occurs on one route and the transfer process is normally completed on the alternative route. The release is performed when the count value reaches 16 in the route use count counters 22 and 23. In addition, the information on the number of failed retries in the failure history display section 20.21 is incremented by 1 by the main control section 11 when the retry processing on a route becomes abnormal, and the number of retries not allowed in the failure history display section 20.21 is incremented by 1 by the main control section 11. When the number reaches 16, the counted value is referenced and used to determine the frequency of abnormality occurrence. When the determination of the frequency of abnormality occurrence is completed, the information on the number of prohibited retries is initialized.

[Effects of the Invention] As explained above, the present invention stores route usage frequency information and route abnormality frequency information corresponding to each route as failure history information in route control of an information processing device, and By determining the rate of abnormality occurrence within the number of times of use and inhibiting the use of routes with a high frequency of abnormality occurrence as failure routes, it is possible to prevent routes from being blocked due to information transfer abnormalities caused by temporary failures, as in conventional information processing equipment. This has the effect of eliminating defects that would make it unusable and building a highly reliable and fault-tolerant information processing system.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an information processing apparatus according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional information processing apparatus. 1... Information processing device, 2, 3... Peripheral device, 11.
...Main control unit, 12...Storage unit, 13.14...Transfer control unit, 15...Transfer status monitoring unit, 16.17...
・Route activation control unit, 18.19... retry counter,
20°21...Fault history display section, 22.23...Route use frequency counting section, 31, 32, 33.34...Route.

Claims (1)

[Claims] 1. An information processing device that is connected to at least one peripheral device via a plurality of paths, selects a path, and transfers information to and from the peripheral device via the selected path. A route activation control means for displaying the validity of the route selected by the information processing device; a transfer control means for transferring information with the peripheral device; and a transfer status monitor for monitoring information transfer processing operations. means for counting the number of times a route used in the information transfer performed by the transfer control means is used when the information transfer process is normal; and counting the number of times the information transfer process is abnormal. a fault history display means; monitoring counts of the counting means and the fault history display means;
What is claimed is: 1. An information processing apparatus, comprising: a route management control means for determining whether an information transfer abnormality exceeding a specified value has occurred, and performs route management for information transfer.