JPH1011879A - Error designatable magneto-optical disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and satisfactorily appraise an abnormal system of a device driver by arbitrarily generating an abnormal state in a disk controller and the whole device. SOLUTION: An error number desired to be generated is selected and inputted to a processing input part 1 by the user. Processing contents are decided by a processing analysis part 2 based on the number selected and inputted by the user, and the contents are stored in the most rear part of a processing table 3. The processing table 3 is always monitored by an information transmitting part 4 to output a result of taking out processing contents as an error by moving up the next processing contents step by setp to a personal computer 200. When an error such as time-out without a response, etc., is desired to be generated, processing is performed in similar procedure to the above, but only procedure in a processing control part 5 is different as the output of the result to the personal computer 200 is not performed by the processing control part 5 to keep on the state until a restoring instruction is given.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an error-specifiable light suitable for evaluation of abnormal processing required for realizing a fault-tolerant function indispensable for a disk driver, particularly for a device driver for a network OS. The present invention relates to a magnetic disk drive.

[0002]

2. Description of the Related Art A device driver for a network OS is required to have high fault tolerance, and it is necessary to be able to cope with any abnormal state so that even if a device to be controlled falls into an abnormal state, the system is not affected. .

Conventionally, in the development of a disk driver,
Although the evaluation of normal processing could be performed relatively easily, abnormalities rarely occur in devices and media, so the magneto-optical disk (MO) media could be damaged artificially or debuggers could be used. In this case, an abnormal system must be evaluated by, for example, making an error state similar to the above, which requires a large number of man-hours.

Therefore, as described in Japanese Unexamined Patent Publication No. Sho 63-53763 and Japanese Unexamined Patent Publication No. Hei 4-77934, a function capable of notifying a disk controller of an arbitrary error state is realized, and the function is to be generated in a normal state. There has been proposed a function that can easily generate an error that cannot be performed and can easily give a sufficient evaluation to an abnormal system.

[0005]

However, in the conventional examples such as the inventions described in JP-A-63-53763 and JP-A-4-77934, an abnormality in a part in the control of the disk controller is similar. It is possible to evaluate the error detection function of the disk controller with respect to the abnormal state, but it is not possible to generate the abnormal state that can occur as a device including the abnormality of the disk controller itself. is there.

The present invention solves the above problems and develops a device driver corresponding to a network OS capable of coping with any assumed abnormal state by making it possible to arbitrarily generate an abnormal state in the disk controller and the entire device. It aims to realize high fault tolerance and to improve productivity in evaluation.

[0007]

Therefore, an error-specifiable magneto-optical disk drive according to the present invention is capable of detecting a media error caused by a defect in a medium, a non-media error caused by a defect other than a medium, a normal termination or an error. It is characterized by being able to generate any abnormal condition that can occur in the device, such as a timeout that is not notified.

Specifically, a processing input unit for selecting and inputting an error number desired by the user, a processing analyzing unit for determining the processing content based on the error number input at the processing input unit, A processing table for storing the processing content determined by the processing analysis unit, an information transmission unit for constantly monitoring and updating the processing table, and outputting the processing information notified from the information transmission unit to the host system as a result and sending the processing information to the information transmission unit A process control unit for notifying the completion of the process, wherein a designated error can be freely generated.

[0009]

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

FIG. 1 is a block diagram showing an embodiment of a magneto-optical disk apparatus capable of specifying an error according to the present invention. In the present embodiment, a processing input unit 1 for selecting and inputting an error number to be generated by a user, a processing content is determined based on the error number input from the processing input unit 1, and the determined processing content is determined. At the end of the processing table 3,
The processing table 3 is constantly monitored, the stored processing contents are extracted, and the information transmission unit 4 that notifies the processing control unit 5 of the extracted processing contents, and the processing contents notified from the information transmission unit 4 are transmitted to the host system ( Personal computer 20
0), and a processing control unit 5 that outputs the result.

To generate an error such as a medium defect (media error) or a device error (non-media error), the user selects and inputs an error number to be generated in the processing input unit 1. The processing analysis unit 2 determines the processing content based on the number selected and input by the user, and stores the content at the end of the processing table 3. The information transmission unit 4 constantly monitors the processing table 3 and retrieves the stored processing contents one by one from the beginning, moves up the stored next processing content one by one, and controls the retrieved processing content. Notify section 5. The processing control unit 5 outputs the result to the personal computer 200 with the notified processing content as an error. When an error such as a timeout without a response is desired to be generated, the processing is performed in the same procedure as described above. However, only the procedure in the processing control unit 5 is different. Keep the state until there is a recovery instruction.

[0012]

As described above, according to the present invention, an error state that cannot be generated in a normal state or cannot be generated can be easily generated. An abnormal system evaluation of a device driver can be efficiently and sufficiently performed without damaging the medium or similarly causing an error occurrence state using a debugger.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a magneto-optical disk apparatus capable of specifying an error according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing input part 2 Processing analysis part 3 Processing table 4 Information transmission part 5 Processing control part 100 Magneto-optical disk device which can specify an error 200 Personal computer

Claims (4)

[Claims] A processing input unit for selecting and inputting an error number desired to be generated by a user; a processing analysis unit for determining processing content based on the number input by the processing input unit; A processing table for storing the processing content determined by the unit; an information transmission unit for constantly monitoring and updating the processing table; and a processing unit for outputting processing information notified from the information transmission unit to a host system as a result. And a process control unit for notifying the completion of the process, and the designated error can be freely generated. 2. The processing analysis unit stores the determined processing content at the end of the processing table.
The processing contents stored in the processing table are fetched one by one from the beginning, the next processing content stored is moved up one by one, and the fetched processing contents are notified to the processing control unit. 2. The magneto-optical disk drive according to claim 1, wherein the error can be specified. 3. The error-specifiable light according to claim 1, wherein the error is a media error caused by a defect in the medium, a non-media error caused by a defect other than the medium, or a non-response error. Magnetic disk drive. 4. In the case of an error without a response, the processing control unit does not output the processing content notified from the information transmitting unit to the host system as a result, and retains the state until a recovery instruction is issued. 4. The magneto-optical disk drive according to claim 3, wherein the error is specified.