JP2833928B2 - Diagnostic initialization method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diagnostic initialization method,
In particular, the present invention relates to a diagnostic initialization method when starting an information processing system (hereinafter, simply referred to as a system).

[0002]

2. Description of the Related Art Generally, a diagnosis initialization method checks the validity of a system by diagnostics at the time of starting the system.
If it is appropriate, the initialization appropriate for each system is performed.

A conventional diagnostic initialization method, as shown in FIG. 5, for example, is a diagnostic means 51 for checking whether there is an abnormality (defect) in a system and diagnosing whether the system is normal.
An initialization means 52 for setting an initial value suitable for the system at the time of system startup in order to make the system usable, and an abnormality for notifying an abnormality when the diagnosis means 51 finds an abnormality in the system. And the notification means 53.

In such a conventional diagnostic initialization method, after the system is started, the diagnostic means 51 diagnoses each of the parts to be diagnosed constituting the system, and when no abnormality is found, Transfers control to the initialization means 52. The initialization means 52 performs initialization suitable for the system. When an abnormality is found, the diagnosis unit 51 sets the abnormality notification unit 53
Transfer control to. The abnormality notification unit 53 notifies the abnormality detected by the diagnosis unit 51.

[0005]

In the above-described conventional diagnostic initialization method, a failure not detected by the diagnostic means 51 (hereinafter referred to as an unknown error), for example, the hardware failure of the diagnostic means 51 during the hardware diagnosis. There is a problem that the diagnosis unit 51 does not operate normally, for example, in the case of a failure in which the operation is disabled due to a stall state while transferring control to itself.

Further, when the diagnostic means 51 falls into a failure of unknown cause, it is necessary to carry out expensive and esoteric analysis using a failure analysis device or the like in order to investigate and analyze the cause of the failure. There is a problem that analysis time may be spent.

Further, the diagnosis means 51 and the initialization means 5
2 has a problem that it is difficult to confirm whether or not itself is operating properly. For example, initialization means 52
If the value issued to the write-only I / O port is different only by the initialization means 52 due to a logic mistake of, and the initial setting for the write-only I / O port is really intended I didn't know if the default values had been issued.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to manage a history up to a time immediately before a failure occurs, thereby tracing the history to facilitate the investigation of the cause of an unknown error and to provide a diagnostic means and an initial state. It is another object of the present invention to provide a diagnostic initialization method capable of confirming the reliability of the optimizing means.

[0009]

SUMMARY OF THE INVENTION A diagnostic initialization method according to the present invention comprises a diagnostic means for diagnosing whether the system is normal, an initialization means for initializing the system, and an abnormality in the system by the diagnostic means. Abnormality notifying means for notifying the abnormality when it is diagnosed as being present; history recording means for recording history record information and management record information of diagnosis by the diagnosis means and initialization by the initialization means; history of performing and history writing means for writing the history record information and management information recorded on the unit, a diagnosis of the history recorded in <br/> said history recording means prior to diagnosis by diagnostic means record information and management information recorded Diagnostic means, and history record information and management record information recorded in the history record means when the system has been diagnosed as having a failure by the history diagnostic means. Has a history notification means notifying to the diagnostic confirmation means for confirming the diagnosis means and the validity of the initialization means itself after a successful initialization by the diagnostic and the initializing means by said diagnostic means.

[0010]

According to the diagnostic initialization method of the present invention, the diagnostic means diagnoses whether the system is normal or not, the initializing means initializes the system, and the abnormality notifying means determines that the system is abnormal by the diagnostic means. When the diagnosis is made, the abnormality is notified, the history recording means records the history record information and the management record information of the diagnosis by the diagnosis means and the initialization by the initialization means, and the history writing means records the history record information and the history record information to the history recording means. Writes management record information and history diagnosis means diagnoses
Before the diagnosis by the means, the history record information and the management record information recorded in the history record means are diagnosed , and when the history notifying means diagnoses that the system has failed by the history diagnosing means, the history record means is notified to the history record means. The recorded history record information and management record information are notified, and the diagnosis confirmation unit confirms the validity of the diagnosis unit and the initialization unit itself after the diagnosis by the diagnosis unit and the initialization by the initialization unit are normally completed.

[0011]

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a diagnostic initialization system according to one embodiment of the present invention. The diagnosis initialization method according to the present embodiment includes a history diagnosis unit 11, a diagnosis unit 12,
Initialization means 13, diagnosis confirmation means 14, history recording means 15, history writing means 16, history notification means 17,
An abnormality notification unit 18 is provided.

The history diagnosing means 11 analyzes whether or not a failure has occurred in the system based on the history record information and the management record information recorded in the history record means 15, and analyzes the history record information and the management record information. Perform diagnostic initialization.

The diagnosing means 12 checks whether there is any abnormality in the system and diagnoses whether the system is normal.

The initialization means 13 sets an initial value suitable for the system at the time of starting the system in order to make the environment usable for the system.

The diagnosis confirming means 14 confirms the validity of the diagnostic means 12 and the initialization means 13 themselves after the diagnosis by the diagnosis means 12 and the initialization by the initialization means 13 are normally completed.

The history recording means 15 records history record information and management record information of the diagnosis by the diagnosis means 12 and the initialization by the initialization means 13.

The history writing means 16 includes a history recording means 15
Then, the history record information and the management record information are written.

The history notifying means 17 obtains and notifies the history recording information and the management recording information recorded in the history recording means 15 when the history diagnosing means 11 diagnoses that a failure has occurred in the system. . Examples of the notification of the history record information and the management record information include screen display of the history record information and the management record information, or recording and saving as a file.

The abnormality notification means 18 notifies the abnormality when the diagnosis means 12 has an abnormality. The notification of the abnormality includes a screen display relating to the abnormality or recording and saving as a file.

Referring to FIG. 2, the management record information recorded in the history record means 15 is mainly information for managing the history record information, and indicates whether the diagnosis and initialization have been completed or not. Processing ID indicating how far the process has been completed
(IDentification), the storage location of the history record information, the size of the history record information,
And management information including the size of each history. The management record information is stored in, for example, a nonvolatile memory or the like in order to avoid destruction by others. The operation status stores the trace status of the diagnosis unit 12 and the initialization unit 13,
This is to deal with a failure.

Similarly, referring to FIG. 2, the history record information recorded in the history recording means 15 is composed of each history including a process ID, a memory ID, and a checksum. Since the history record information may be destroyed due to an unknown cause or the history record information itself may be unusable due to a failure such as a memory error, the storage location of the history record information is relocatable. The storage location of the history record information and the size of the history record information are stored in the management record information.

For each processing of diagnosis and initialization performed by the diagnosis means 12 and the initialization means 13, each processing I
D is allocated, and a history is stored corresponding to the processing ID. The history is designed to store necessary information in the event of a failure. Also, the size of the history can be set according to the system configuration, and the size of the history can be changed by changing the size of the history record information in the management record information and the size of each history. ing.

Referring to FIG. 3, the processing of the history diagnosing means 11 includes a failure occurrence determination step S31, a memory checksum determination step S32, and a memory ID determination step S32.
33, history record information storage location diagnosis step S34,
It comprises a storage location diagnosis result determination step S35 and a history record information and management record information initialization step S36.

Referring to FIG. 4, the processing of the history writing means 16 includes a pointer acquisition step S41, a processing ID writing step S42, an operation status and history etc. writing step S43, a processing ID writing step S44, a pointer changing step. It consists of S45.

Next, the operation of the diagnostic initialization system according to the present embodiment configured as described above will be described.

When the system is started, first, the history diagnosing unit 11 refers to the operation status in the management record information recorded in the history recording unit 15 and a failure (including a failure of unknown cause) occurred in the system last time. It is checked whether the operation has been performed (step S31). If no failure has occurred (this is usually the case), the history diagnosing unit 11 diagnoses the storage location of the history recording information of the history recording unit 15 (step S34), and determines the storage location of the history recording information. A diagnosis result is determined (step S35). If the diagnosis result of the storage location of the history record information is normal, the history diagnosis unit 11 initializes the history record information and the management record information (step S36), and transfers control to the diagnosis unit 12. If the diagnosis result of the storage location of the history record information is not normal (if the memory is abnormal), the history diagnosis unit 11 transfers the control to the history writing unit 16.

On the other hand, if a failure has occurred in step S31, the history diagnosing means 11 determines the memory checksum to confirm the reliability of the history record information (step S3).
2) and the determination of the memory ID (step S33), and if it is normal, it means that a failure has occurred in the system last time, so the control is transferred to the history notifying means 17.

The history notifying means 17 reads out the history record information and the management record information recorded in the history record means 15 and notifies an output device (not shown) such as a console or an auxiliary storage device.

Determination of memory checksum or memory I
If an error occurs in the determination of D, the history diagnosis unit 11
Since the history record information is not reliable due to the memory abnormality, the control is transferred to the history writing unit 16.

The history writing means 16 includes a history recording means 15
The history diagnostic means 11 is restarted by changing the storage location of the history record information recorded in the record.

The diagnosis means 12 diagnoses the presence or absence of an abnormality in the system, for example, by checking a hardware failure by a memory read / write test, an I / O level status check, or the like. Is found, an abnormality notification is made by the abnormality notification means 18.

The initialization means 13 sets an initial value suitable for the system at the time of system startup in order to make the environment usable for the system.

In each diagnosis and initialization of the diagnosis means 12 and the initialization means 13, the history writing means 16 is called with the processing ID and the history as input information.

The history writing means 16 first obtains a pointer for storing the history in the history record information (step S41),
Write the process ID to the history record information (step S4
2). Next, the history writing unit 16 writes the operation status, the history, and the like in the storage location of the history record information in order from the top (step S43), and when the storage of the history is completed, how far the process has progressed in the event of a failure. Is stored in the operation status in the management record information so that the user can see at a glance (step S44). Subsequently, the history writing unit 16 changes the pointer to a pointer for storing the next history (pointer ← pointer + history size) (step S45).

After the diagnosis means 12 and the initialization means 13 are completed, the diagnosis confirmation means 14 checks the validity of the diagnosis means 12 and the initialization means 13 (whether or not they operate properly). As an example of the checking method, the system has information that can be generated when the diagnosis unit 12 and the initialization unit 13 operate in association with the history in advance, and compares the information with the history after the operation. If the validity check results of the diagnosis unit 12 and the initialization unit 13 are normal, the diagnosis confirmation unit 14 ends the diagnosis initialization. If the check result of the validity of the diagnosis unit 12 and the initialization unit 13 is abnormal, the diagnosis confirmation unit 14 restarts the history diagnosis unit 11.

If the diagnostic means 12 and the initializing means 13 cause an abnormality for some reason and do not shift the control to the abnormality notifying means 18, that is, if an unidentified failure (system stop, system runaway, etc.) occurs,
Restart your system.

When the system is started, the history diagnosing means 11
Refers to the operation status in the management record information recorded in the history recording means 15 to check that a failure has occurred in the previous diagnosis initialization (step S31), and to determine the memory checksum (step S31). S32) and memory ID
Is determined (step S33), and if it is normal, the control is transferred to the history notifying means 17.

The history notifying means 17 reads out the history record information and the management record information recorded in the history recording means 15 and notifies an output device (not shown) such as a console or an auxiliary storage device.

[0040]

As described above, according to the present invention, the history diagnosing means, the history recording means, the history writing means, and the history notifying means are provided to manage and notify the history immediately before a failure occurs. By tracing the history, it is possible to easily and quickly cope with a failure of unknown cause.

Further, the provision of the diagnosis confirmation means has an effect that the reliability of the diagnosis means and the initialization means itself is also ensured.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a diagnosis initialization method according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of history record information and management record information in history record means in FIG.

FIG. 3 is a flowchart showing a process of a history diagnosis unit in FIG. 1;

FIG. 4 is a flowchart showing processing of a history writing unit in FIG. 1;

FIG. 5 is a block diagram showing a configuration of a conventional diagnostic initialization method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 History diagnosis means 12 Diagnosis means 13 Initialization means 14 Diagnosis confirmation means 15 History recording means 16 History writing means 17 History notification means 18 Abnormality notification means

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-75145 (JP, A) JP-A-4-127334 (JP, A) JP-A-2-122335 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) G06F 11/22-11/34

Claims (1)

(57) [Claims] A diagnostic means for diagnosing whether or not the system is normal; an initialization means for initializing the system; and when the diagnostic means diagnoses that the system is abnormal, the abnormality is notified. Abnormality notifying means; history recording means for recording history record information and management record information of diagnosis by the diagnosis means and initialization by the initialization means; and writing history record information and management record information in the history record means. History writing means, history diagnosis means for diagnosing history record information and management record information recorded in the history recording means before the diagnosis by the diagnosis means, and that a failure has occurred in the system by the history diagnosis means. History notifying means for notifying the history record information and management record information recorded in the history record means when the diagnosis is made; Diagnostic initialization method characterized by having a diagnostic confirmation means for confirming the diagnosis means and the validity of the initialization means itself after successful completion of initialization by the diagnosis and the initializing means.