JPH0231380A - Alternative processing system for hard disk device - Google Patents

Abstract

PURPOSE:To quickly raise a system by providing an alternative information management table detecting mechanism. CONSTITUTION:A defective position detecting mechanism 1 which discriminates the control state to an input/output request issued from an input/output control program to a hard disk device 6 and an alternative information management table detecting mechanism 2 which controls an alternative information management table detecting flag 2a are provided. An alternative processing system consists of an alternative information management table generating mechanism 3 which expands alternative management information 6a in the hard disk device 6 onto a memory as an alternative information management table 3a and an alternative processing mechanism 4 which performs the alternative processing based on the alternative information management table 3a. Thus, it is unnecessary to expand alternative information stored in the hard disk device onto the memory at the time of raising the system, and the system is quickly raised.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an alternative processing method when detecting a defective part of a hard disk drive.

[Conventional technology]

The conventional alternative processing method for hard disk drives expands the alternative information stored in the hard disk drive into memory when the system starts up by turning on the power, and refers to the alternative information developed in memory when an input/output processing request is made to the hard disk drive. However, alternative processing was performed.

[Problem to be solved by the invention]

In the above-mentioned conventional method, the alternative information stored in the hard disk device is loaded into the memory at the time of system startup, so the system startup is slow. Furthermore, the input/output processing information is poor because alternative information developed in memory is always referred to when requesting input/output processing to the hard disk device.

[Means to solve the problem]

According to the present invention, in an information processing system that performs alternative processing when a defective part of a hard disk drive is detected, a defective part detection mechanism that determines the control state for an input/output request, and alternative information that controls an alternative information management table detection flag are provided. a management table detection mechanism; an alternative information management table creation mechanism that develops alternative management information in a hard disk drive as an alternative information management table on a memory; and an alternative processing mechanism that performs alternative processing based on the alternative information management table. An alternative processing method for a hard disk device is obtained.

〔Example〕

Next, the present invention will be described in more detail with reference to the drawings showing one embodiment of the present invention.

Referring to FIG. 1, an alternative processing method for a hard disk device according to an embodiment of the present invention is an input/output control program 5
a defective location detection mechanism 1 that determines the control status for input/output requests issued to the hard disk device 6; an alternative information management table detection mechanism 2 that controls the alternative information management table detection flag 2a; and an alternative management table in the hard disk device 6. It consists of an alternative information management table creation mechanism 3 that develops information 6a on a memory as an alternative information management table 3a, and an alternative processing mechanism 4 that performs alternative processing based on the alternative information management table 3a.

Referring to FIG. 2, the operation flow in this embodiment is as follows:
Input/output to any location on the hard disk drive Step 2
1, step 22 for determining failure occurrence during input/output control, step 23 for determining alternative processing implementation, step 24 for determining alternative information management table creation, step 25 for creating alternative information management table, and step 25 for determining alternative input/output request position. 26
and an input/output request position changing step 27.

Next, the operation of this embodiment will be explained.

When an input/output request to any part of the hard disk device 6 occurs, the input/output control program 5 performs the following:
Input/output control is performed (step 21).

The defect detection mechanism 1 determines whether a failure has occurred during the input/output control performed by the input/output control program 5 (step 22). Determination is made (step 23). In the case of a failure for which alternative processing is possible, the alternative information management table detection mechanism 2 uses the alternative information management table detection flag a to determine whether an alternative information management table has been created. A determination is made (step 24).

The alternative information management table creation mechanism 3 develops the alternative management information 6a in the hard disk drive 6 on the memory as the alternative information management table 3a (step 25), and marks the alternative information management table detection flag as already created.

In step 24, the alternative information management table detection flag 2a means that it has been created, or
When the alternative information management table 3a is created in step 5, the alternative processing function 4 refers to the alternative information management table 3a,
It is determined whether the previous input/output request position has been replaced (step 26). If it is determined that the input/output request position has been substituted, the input/output request position is changed to the substitute destination position (step 27), and control is returned to the input/output control program 5.

〔Effect of the invention〕

As explained above, according to the present invention, by having the alternative information management table detection mechanism, it is not necessary to perform the process of expanding alternative information into memory at the time of system startup, and as a result, the system can be started up quickly. can do.

Furthermore, by having a defective location detection mechanism, the number of times that alternative information is referred to is reduced, thereby improving input/output processing performance.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an alternative processing method for an external auxiliary storage device according to an embodiment of the present invention, and FIG. 2 is a flowchart showing the flow of processing in the present invention. DESCRIPTION OF SYMBOLS 1... Defective point detection mechanism, 2... Alternative information management table detection mechanism, 2a... Alternative information management table detection flag, 3... Alternative information management table creation mechanism, 3a.
...Alternative information management table, 4...Alternative processing mechanism, 5
... Input/output control program, 6... Hard disk device, 6a... Alternative management information.

Claims (1)

[Claims] In an information processing system that performs alternative processing when a defective part of a hard disk drive is detected, a defective part detection mechanism that determines a control state for an input/output request, an alternative information management table detection mechanism that controls an alternative information management table detection flag, The present invention is characterized by having an alternative information management table creation mechanism that develops alternative management information stored in a hard disk drive on a memory as an alternative information management table, and an alternative processing mechanism that performs alternative processing based on the alternative information management table. An alternative processing method for hard disk drives.