JPH09259014A - Abnormal information recording system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an abnormal information recording system which can record sufficient information quantity at a high speed when an abnormality occurs and which can take out information in a preferable form for analysis for investigating cause. SOLUTION: When the occurrence of an abnormality in a system is detected (S11), situation information on the occurrence of abnormality is recorded in a non-volatile memory which the system has (S12). Situation information is read from the non-volatile memory and it is recorded in a terminal screen and a printer device if possible (S13). When the system stops owing to the occurrence of abnormality such as a power cut and the runaway of OS (S14) and the system is restarted (S15), situation information recorded in the non- volatile memory is read and it is automatically copied as the starting processing of a hard disk device (S16). Then, situation information is read from the hard disk device and analysis for investigating the cause of abnormality is executed (S17).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abnormality information recording method for obtaining a status information as a record for investigating the cause when a system abnormality occurs in a computer system.

[0002]

2. Description of the Related Art When a computer system experiences a power failure, a runaway, or even a hard disk failure,
The program that detects it outputs detailed status information to an output device such as a terminal screen or a printer to enable investigation of the cause after occurrence of an abnormal situation.

When the power is cut off, the recorded information becomes the information of the event itself and has an information amount of several bytes. Also, O
In the case of a runaway of S etc., it becomes information indicating the cause, and the amount of information such as a message necessary for cause analysis is 1 kilobyte or less. If the hard disk is abnormal, information such as a transmission error code or an error in response to an access request is provided, and the amount of information such as a subroutine name or parameter is 1 kilobyte or less.

The recording of such status information is made possible in a recording medium such as a hard disk device in an advanced system.

FIG. 3 shows a procedure for recording and analyzing status information, recording status information upon detection of an abnormality (S1) (S2), stopping the system (S3), and restarting the system (S4). After that, the information is analyzed (S5).

[0006]

An abnormal situation in a computer system generally has a low frequency of occurrence, and the status information is valuable for investigating the cause, and the recovery of this information greatly affects the reliability of the system. To do.

In the conventional information recording system, the output to the terminal screen is highly reliable and the information recording speed is high, but the record holding ability is very low.

The output to the printer device has a high record holding ability, but the recording speed is very low, and the reliability is not high due to paper shortage or paper jam.

The hard disk or floppy disk device has high reliability and high recording holding ability and high recording speed, but it cannot obtain high speed enough to cope with an abnormal situation such as power failure. In addition, the information recording procedure becomes complicated, and in the worst case of recording on a hard disk or the like, other data may be damaged.

An object of the present invention is to provide an abnormal information recording method capable of recording information at a high speed and with a sufficient amount of information when an abnormality occurs, and taking out information in a preferable form for analysis for investigating the cause. .

[0011]

SUMMARY OF THE INVENTION According to the present invention, in an abnormality information recording system for recording status information when an abnormality occurs in a computer system, the status information when the abnormality occurs is recorded in a nonvolatile memory of the system. The contents of the non-volatile memory are copied to an external storage device during the continuous operation of the system or when the system is restarted after the system is stopped.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a procedure for recording / analyzing status information at the time of occurrence of an abnormality, showing an embodiment of the present invention.

When it is detected that an abnormality has occurred in the system (S11), status information of the abnormality is recorded in the nonvolatile memory of the system (S12). Also, when the information recording target is unrelated to the recording means such as a hard disk error or when the recording time is relatively long, the status information is read from the non-volatile memory and recorded on the terminal screen or the printer device. Yes (S13).

When the system is stopped due to an abnormal occurrence such as power failure or OS runaway (S14) and the system is restarted (S15), the information is read from the non-volatile memory in which the status information is recorded in step S12. , Is automatically copied as a startup process of the hard disk device (S16). After this,
The status information is read from the hard disk device or the like and analyzed for investigating the cause of the abnormality (S17).

According to the present embodiment, the occurrence of abnormality is
As shown in, there are transient sporadic abnormalities and permanent abnormalities due to power failure, etc., but in either case, the time to record status information to the hard disk drive is insufficient, so
Record in non-volatile memory.

Since the amount of information at this time is 1 kilobyte or less, the 16 kilobyte non-volatile memory can record the abnormal situation information 16 times.

After that, the abnormality continues, and after the system is restarted after the system is stopped such as power-off, the recorded information in the non-volatile memory is copied to the hard disk device and obtained as visible information necessary for maintenance.

Further, even when the system can be continuously operated, the status information is recorded in the non-volatile memory, and even if a failure finally occurs, information for analyzing the process can be obtained.

In the embodiment, the case where the contents of the non-volatile memory are copied to the hard disk device has been shown, but the same operation and effect can be obtained by copying the contents to another external storage device such as a floppy disk.

[0020]

As described above, according to the present invention, the situation information at the time of occurrence of an abnormality is recorded in the nonvolatile memory of the system,
Since the contents of the non-volatile memory are copied to the external storage device while the system is operating continuously or when the system is restarted after the system is stopped, the following effects can be obtained.

(1) Since the non-volatile memory is high-speed and highly reliable, and the recording procedure is simple, the situation information can be surely recorded even in the case of a temporary abnormality or an abnormality such as a power failure.

(2) Since the final recording target is an external storage device such as a hard disk device, the capacity of an expensive non-volatile memory can be minimized to secure a sufficient recording capacity.

(3) Since the data is copied to the external storage device after the system returns to normal, it is possible to prevent accidents such as damage to other data as compared with the conventional system in which the abnormal situation information is directly recorded in the hard disk device or the like. You can

[Brief description of drawings]

FIG. 1 is a record of abnormal condition information showing an embodiment of the present invention.
Analysis procedure diagram.

FIG. 2 is an example of an abnormal situation for explaining recording in the embodiment.

FIG. 3 is a diagram showing a conventional recording / analyzing procedure of abnormal situation information.

Claims (1)

[Claims] 1. An abnormality information recording method for recording status information when an abnormality occurs in a computer system, wherein the status information when the abnormality occurs is recorded in a non-volatile memory of the system, and the system is in continuous operation or in the system. An abnormal information recording method characterized in that the contents of the non-volatile memory are copied to an external storage device upon restarting after stop.