JPH0651989A - Fast loading system of operating system in computer system - Google Patents

Abstract

PURPOSE:To perform the fast load processing of an operating system without performing the read processing of volume information for the whole device in spite of the presence/absence of a restore command in the initial load processing of the operating system. CONSTITUTION:This system is provided with the device name instruction means 2 of a system storage file volume which instructs a volume in which a system storage file is stored in a device name by a REST command to instruct the generation of a system residence volume, the acquiring means 3 of the correspondence table of the device name with a channel number, a channel number acquiring means 4 to acquire the channel number from the device name of the volume, a restore processing means 5 which performs the generation processing of the system residence volume based on the device name and the channel number, and a device name/channel number correspondence table 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer system, and more particularly to a system initial load process of an operating system.

[0002]

2. Description of the Related Art Conventionally, in this type of computer system, at the time of initial loading of the operating system, volume information is read from all devices regardless of the presence or absence of restore processing, and the volume information is set in a table. It was Then, when the REST command is specified, the device name and channel number for the specified media name are acquired from this table, and the restore process is performed based on these.

[0003]

In the above-mentioned conventional computer system, the volume information read processing of all the devices is performed at the time of the system initial load of the operation system regardless of the presence or absence of the restore processing. Further, at the time of restarting, since the read processing for all the devices has to be performed again, there is a drawback that the system initial load processing of the operating system takes a considerable time.

In view of the above problems, the present invention is an operating system in a computer system that enables high-speed load processing of an operating system without reading volume information from all devices regardless of whether a restore command is requested. The purpose is to provide a high-speed loading method.

[0005]

A high-speed loading method of an operating system in a computer system of the present invention is a computer system which creates a system resident volume from a system storage file according to an operator instruction at the time of IPL. By a REST command for instructing the creation of a system storage file, a device name instructing means for a system storage file volume for instructing a volume storing a system storage file by a device name, an acquisition means for obtaining a correspondence table of the device name and channel number, Get channel number from device name,
It has a channel number acquisition means and a restore processing means for creating a system-resident volume based on the device name and channel number.

[0006]

According to the above configuration, the restore command process is operated by inputting the REST command for instructing the creation of the system resident volume at the time of IPL (initial program loading), and the device name instructing means of the system storage file volume stores the system storage file. Specify the volume by device name. The device name / channel number correspondence table acquisition means acquires the instructed device name / channel number correspondence table, and the device name / channel number acquisition means refers to the correspondence table to acquire the channel number from the device name. Since the restore processing means performs the resident volume creation processing based on the device name and channel number, the system initial load processing is speeded up.

[0007]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.

Referring to FIG. 1, a restore command process 1, a device name designating unit 2 for a system storage file volume, a device name / channel number correspondence table obtaining unit 3, a channel number obtaining unit 4, and a restore processing unit. 5
Have and.

Next, the operation will be described. In a computer system in which a system resident volume is created from a system storage file according to an operator instruction at IPL, a restore command process 1 is operated by inputting a REST command to create a system resident volume at IPL. Then, the volume for storing the system storage file is designated. The device name designating means 2 for the system storage volume designates the device name of the system storage file. As a result, the device name of the designated system storage file is passed to the device name / channel number correspondence table acquisition means 3.

FIG. 2 is a diagram showing an example of the device name / channel number correspondence table shown in FIG. 1. As shown in FIG. 2, each device constituting the operating system corresponds to a unique device name 61 and device name. A channel number 62 for indicating the physical connection state is provided. Generally, in the operating system, the correspondence table 6 between the device name and the channel number is held by hardware or software, or both. The device name / channel number correspondence table acquisition means 3 activates the channel number acquisition means 4 after acquiring the device name / channel number correspondence table 6.
The channel number acquisition means 4 refers to the device name / channel number correspondence table 6 and refers to the device name 61 to the channel number 6
Get 2. Next, the restore processing means 5 is activated with the device name 61 designated by the device name designation means 2 of the system storage file volume and the channel number 62 acquired by the channel number acquisition means 4 as input. The restore processing means 5 performs the system resident volume creation processing based on the device name 61 and the channel number 62.

Further, in the initial load processing of the system, if the restore processing is not necessary, the restore command processing 1 is not executed, and unnecessary processing such as reading the volume information of all the devices is not performed.

Even when there is no restore instruction, the read processing of the volume information of all the devices is not performed, so that the operating system can be loaded at high speed.

In this embodiment, in the restore command processing, by designating the device name instead of the media name, it is possible to speed up the system initial load processing of the operation system.

[0015]

As described above, according to the present invention, in the system initial load processing of the operation system,
There is an effect that it is possible to perform the high-speed load processing of the operation system without performing the read processing of the volume information for all the devices regardless of the request of the restore command.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an exemplary embodiment of the present invention.

FIG. 2 is a diagram showing the contents of a device name channel number correspondence table shown in FIG.

[Explanation of symbols]

 1 restore command processing 2 device name designating means for system storage file volume 3 device name / channel number correspondence table obtaining means 4 designated device channel number obtaining means 5 restore processing means 6 device name / channel number correspondence table

Claims (1)

[Claims] 1. A computer system in which a system resident volume is created from a system storage file by an operator instruction at IPL, and a volume storing the system storage file by a REST command instructing the creation of a system resident volume at IPL A device name designating unit for a system storage file volume that is designated by a device name, an obtaining unit for obtaining a correspondence table of the device name and a channel number, a channel number obtaining unit for obtaining a channel number from a device name for the volume, the device name, A high-speed loading method for an operating system, comprising restore processing means for performing system resident volume creation processing based on a channel number.