JPH11296419A - Copying method for disc device and record medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the copying time of a disc device by referring to a using state part and a using purpose part of a volume management information part of a copy origin at the time of copying the disc device and copying only an area which is used and is necessary to be copied. SOLUTION: A volume management information part 2 of a disc device 1 of a copy origin is provided with a utility state part for indicating at least use/nonuse state in every area to be used by an operating system, a using purpose part for indicating the using purpose such as a program, data, swap or dump, and a use area part for indicating a leading address and a completion address of the use area. Here, by referring to the using part and the using purpose part of the volume management information part of the copy origin at the time of copying and copying only the use area needed for activating the operating system, a copy time of the disc device is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying method for a disk device and a recording medium, and more particularly, to a volume management information section of a copy source, in which information such as a use state, a use purpose, and a use area is provided. By referring to the state and the purpose of use and copying only the used area and the area that needs to be copied from the purpose of use, the copying time of the disk device is reduced.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a conventional copying method of a disk drive. FIG. 5 is a processing flowchart of an embodiment for copying a conventional disk device, and FIG. 6 is a configuration diagram of an embodiment of a volume management information section provided in a conventional copy source disk device.

[0006] Reference numeral 61 in FIG. 6 denotes a volume management information section created by file management of the operating system and set when creating various data files. The volume management information section 61 is composed of an area name for identifying an area, a use state indicating a used / unused state of the area, and a used area indicating a start address and an end address of the area. I have.

The operation will be described with reference to the flow chart of FIG.

Step S501: The volume management information section is read from the copy source disk device.

Step S502: A reference pointer of the volume management information section is set at the head of the volume management information section.

Step S503: It is determined whether the use state of the area indicated by the reference pointer is in use. If it is being used, the process proceeds to step S504. If it is not being used, the process proceeds to step S506.

Step S504: The data in the used area is read from the copy source disk device.

Step S505: The data read in step S504 is written into the same area of the copy destination disk device.

Step S506: The reference pointer of the volume management information section is updated.

Step S507: It is determined whether all area names have been processed. If processing is completed, the processing ends,
If not, the process returns to step S503.

FIG. 7 shows an area configuration diagram of an embodiment of a copy source disk device and a copy destination disk device in a conventional copy process.

When the copy source disk unit 71 is in the area A (use:
FIG. 5 shows a configuration including a program), an area B (use: data), an area C (use: swap), an area D (unused), an area E (use: dump), and an area F (unused). 5 from step S503 to step S
According to 505, only the used area is copied to the copy destination disk device 72. Therefore, the copy destination disk device 72 is composed of the area A, the area B, the area C, and the area E.

[0014]

However, in the prior art shown in FIG. 5, it is necessary to make a simple copy of a swap area used for swap-in and swap-out in an operating system and a dump area for storing a system dump when an error occurs. There is a problem that unnecessary copying time is required for copying a temporary area without any data.

[0015]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems. In a method of copying a disk device in which an operating system is stored, a volume management information of a disk device of a copy source is provided. A use state unit indicating at least a used / unused state for each area used by the operating system, a program,
A usage purpose section indicating the usage purpose of data, swap, dump, etc., and a usage area section indicating the start address and end address of the usage area are provided. During copying, the usage status section and usage purpose of the copy source volume management information section are provided. The copying time of the disk device is shortened by copying only the used area and the used area necessary for operating the operating system, such as programs and data, by referring to the section.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a method of copying a disk device in which an operating system is stored, a volume management information section of a copy source disk device indicates at least a used / unused state for each area used by the operating system. A status part, a use purpose part indicating a use purpose of a program, data, swap, dump, etc., and a use area part indicating a start address and an end address of a use area are provided. The copy time of the disk unit can be reduced by copying only the used area, such as programs and data, necessary for operating the operating system by referring to the usage status section and the intended use section. Becomes

[0017]

FIG. 1 is a block diagram showing the configuration of the present invention. In the figure, 1 is a disk device storing an operating system, and 2 is a volume management information section storing information such as a use state, a use purpose, and a use area of various data files created by file management of the operating system. Numeral 3 denotes a disk device to which data of the disk device 1 is copied, and numeral 4 denotes a disk device copying means for copying data of the disk device 1 to the disk device 3.

FIGS. 2 and 3 show a copying method of the disk drive of the present invention. FIG. 2 is a processing flowchart of an embodiment for copying a disk device of the present invention, and FIG. 3 is a configuration diagram of an embodiment of a volume management information section provided in a copy source disk device of the present invention.

Reference numeral 31 in FIG. 3 denotes a volume management information section created by file management of the operating system and set when creating various data files. The volume management information section 31 indicates an area name for identifying the area, a use state indicating the used / unused state of the area, and a use purpose of the area, that is, a program, data, swap, dump, and the like. Purpose of use and
It consists of a start address of the area and a use area indicating the end address.

The operation will be described with reference to the flow of FIG.

Step S201: The volume management information section is read from the copy source disk device.

Step S202: The reference pointer of the volume management information section is set at the head of the volume management information section.

Step S203: It is determined whether the use state of the area indicated by the reference pointer is in use. If it is in use, the process proceeds to step S204, and if it is not used, the process proceeds to step S207.

Step S204: It is determined whether the purpose of use of the area pointed to by the reference pointer is program / data. If it is a program / data, the process proceeds to step S205, and if it is not a program / data, the process proceeds to step S207.

Step S205: The data in the used area is read from the copy source disk device.

Step S206: The data read in step S205 is written in the same area of the copy destination disk device.

Step S207: The reference pointer of the volume management information section is updated.

Step S208: It is determined whether all area names have been processed. If processing is completed, the processing ends,
If not, the process returns to step S203.

FIG. 4 is a diagram showing an area configuration of one embodiment of a copy source disk device and a copy destination disk device according to the copy processing of the present invention.

The copy source disk unit 41 is composed of areas A (program), area B (data), area C (swap), area D (unused), area E (dump), and area F (unused). In this case, only the area in which the program / data is used and the purpose of use is copied to the copy destination disk device 42 in steps S203 to S206 of the copy process of FIG. Reference numeral 42 includes only the area A and the area B.

As described above, areas unnecessary for operating the operating system for the copy destination disk device, that is, the area C which is a swap area, the area E which is a dump area,
In addition, since the copying of the areas D and F, which are unused areas, is not performed, the copying time can be greatly reduced.

[0032]

The present invention is embodied in the form described above, and has the following effects.

At the time of copying of the disk device, referring to the use status section and the use purpose section of the volume management information section of the copy source, only the area that is in use and needs to be copied is copied. As a result, the copying time of the disk device can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of the present invention.

FIG. 2 is a processing flowchart of an embodiment for copying the disk device of the present invention.

FIG. 3 is a configuration diagram of one embodiment of a volume management information section provided in a copy source disk device of the present invention.

FIG. 4 is an area configuration diagram of an embodiment of a copy source disk device and a copy destination disk device according to the copy processing of the present invention.

FIG. 5 is a processing flowchart of an embodiment for copying a conventional disk device.

FIG. 6 is a configuration diagram of an embodiment of a volume management information section provided in a conventional copy source disk device.

FIG. 7 is an area configuration diagram of one embodiment of a copy source disk device and a copy destination disk device in a conventional copy process.

[Explanation of symbols]

 4 Disk device copying means

Claims (2)

[Claims] 1. A method of copying a disk device in which an operating system is stored, comprising: a use status portion indicating at least a used / unused status for each area used by the operating system in a volume management information portion of a copy source disk device. And a usage section indicating the usage purpose of the program, data, swap, dump, etc., and a usage area section indicating the start address and end address of the usage area. When copying, the usage status of the source volume management information section A method of copying a disk device which refers to a copy unit and a use target unit, and copies only a use area necessary for operating an operating system, such as a program and data, in a used area. 2. A recording medium in which a program for copying a disk device in which an operating system is stored is recorded, wherein at least the used / unused area is stored in the volume management information section of the copy source disk device for each area used by the operating system. A usage status section indicating the usage status, a usage purpose section indicating the usage purpose of the program, data, swap, dump, etc., and a usage area section indicating the start address and end address of the usage area are provided. A computer-readable record that records a program that refers to the use state section and use purpose section of the volume management information section and copies only the used area that is necessary for operating the operating system such as programs and data. Medium.