JPH0651990A - System initial loading system of operating system in computer system - Google Patents

Abstract

PURPOSE:To smooth the system initial load processing of an operating system by changing the read processing of volume information. CONSTITUTION:A computer system which generates a system resident volume from a system storage file by the instruction of an operator when IPL is performed is comprised of restore command processing 1, a media name instruction means 2 for a system storage file volume, a media name check, means 3 for the system storage file volume, a device name of instruction medium/ channel number acquiring means 4, a restore processing means 5, a system storage file volume information succeeding means 6, and a system interface area 7. Thereby, the initial load processing of the system not accompanying by the restore processing can be performed at high speed. Also, restore processing time in restart-up can be shortened.

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 executed when the system processing of the operating system is loaded, regardless of the presence or absence of the restore processing.
Further, at the time of restarting, the volume information read processing must be performed again for all the devices, so that there is a drawback that the system initial loading processing of the operating system takes a considerable time.

In view of the above problems, the present invention is an IPL.
An object of the present invention is to provide a system initial load method of an operating system in a computer system that performs a volume information read process only when necessary in the process of (initial program loading) to smoothly perform an operating system system initial load process. .

[0005]

A system initial loading method of an operating system in a computer system of the present invention is a system resident system at IPL in a computer system which creates a system resident volume from a system storage file according to an operator instruction at IPL. By the REST command to instruct the volume creation,
The device name and channel number of all devices are acquired by means of the system name of the system storage file volume, which indicates the volume storing the system storage file by the media name, and by reading the volume information,
A device name and channel number acquisition means for obtaining the device name and channel number for the specified media name, and a restore processing means for performing system resident volume creation processing based on the media name, device name, and channel number Have and.

In a computer system that creates a system resident volume from a system storage file according to an operator's instruction at IPL, a volume storing the system storage file by a REST command to create a system resident volume at IPL The media name instructing means for the system storage file volume that specifies the media name, the media name instructed by the media name instructing means for the system storage file volume, and the one saved in the system interface area By checking the system storage file volume that compares the media name of the system storage file volume and reading the volume information, the device names and channel numbers of all devices are acquired and specified. The device name for the media name,
The device name and channel number acquisition means of the specified media that obtains the channel number, the restore processing means that creates the previous system resident volume based on the media name, device name, and channel number, and the system used during the restore processing It has a system storage file volume information transfer means for saving the media name, device name and channel number of the storage file volume in the previous system interface area and transferring it to the next restore process.

[0007]

According to the above construction, the restore command process is activated by inputting the REST command for instructing the creation of the system resident volume during IPL, and the media name instructing means of the system storage file volume indicates the media name of the storage file. The system storage file volume check means compares the instructed media name with the media name saved in the system interface area that was used in the previous restore process, and if they match, it uses the volume information read process. The device name and channel number acquisition means of the specified media are not activated.

On the other hand, if the instructed media name is not yet saved in the system interface area, the device name of the specified medium and the channel number acquisition means are activated from the media instruction to read the volume information and specify it. The device name and channel number of the media are acquired, the system resident volume is created by the restore processing means, and the volume information is saved by the system storage file volume information transfer means, so the volume information read processing is performed only when necessary. , It is possible to speed up the initial loading process of the system.

[0009]

Embodiments of the present invention will now 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 media name designating means 2 for a system storage file volume, a media name checking means 3 for a system storage file volume, a device name of a designated media, and a channel number acquisition means 4 are shown. 2, a restore processing means 5, a system storage file volume information takeover means 6, and a system interface area 7.

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's instruction at IPL, a restore command process 1 is operated by inputting a REST command for instructing creation of a system resident volume at IPL. And
The media name of the system storage file is designated by the medium name designating means 2 of the system storage file volume which designates the volume storing the system storage file. As a result, the media name of the specified system storage file is passed to the system storage file volume check means 3.

FIG. 2 is a flow of processing of the checking means. As shown in FIG. 2, the system storage file volume checking means 3 checks whether or not the previous volume information of the system storage file is saved in the system interface area 7 (S-21, S-
22) If it is not saved, the device name of the designated medium and the channel number acquisition unit 4 are started by inputting the media name designated by the medium name designation unit 2 of the system storage file. The device name / channel number acquisition means 4 of the designated medium reads the volume information of all the devices, searches for a device loaded with the designated medium name, and acquires the device name and channel number.
Next, the restore processing means 5 is started by inputting the medium name designated by the medium name designating means 2 of the system storage file volume, the device name of the designated media, the device name obtained by the channel number obtaining means 4, and the channel number. To do. The restore processing means 5 performs a system resident volume creation process based on the media name, device name, and channel number. After the restoration processing by the restoration processing means 5 is completed, the media name, device name, and channel number of the system storage file volume are saved in the system interface area 7 by the system storage file volume information takeover means 6.

Further, when the restore command processing 1 operates again due to system reset, restart after loading, etc., the medium name designating means 2 for the system storage file.
As shown in the flow of FIG. 2, it is checked by the checking means 3 whether the media name instructed by and the media name saved in the system interface area 7 match (S-21, S). -22). If they match, the device name / channel number acquisition unit 4 of the designated medium does not operate, and the restore processing unit 5 is started by inputting the media name, device name, and channel number saved in the system interface area 7, Restore processing is performed.

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 volume information of all devices is not performed.

In this embodiment, in the restore command processing, the volume information read processing is performed only when necessary, so that the system initial loading processing of the operating system can be smoothly performed.

[0018]

As described above, according to the present invention, in the system initial load process of the operating system, the read process of the volume information to all the devices is performed only at the time of the restore command process. The system initial load processing can be performed at high speed. Further, by saving the previous restore volume information in the system interface area, there is an effect that the restore processing time at the time of restart can be shortened.

[Brief description of drawings]

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

FIG. 2 is a flow chart showing a flow of a check means of the system storage file volume shown in FIG.

[Explanation of symbols]

1 Restore command processing 2 Media name instructing means for system storage file volume 3 Checking means for system storage file volume 4 Device name and channel number acquisition means for designated media 5 Restore processing means 6 System storage file volume information transfer means 7 System interface area

Claims (2)

[Claims] 1. A volume storing a system storage file by a REST command for instructing the creation of a system resident volume at IPL in a computer system in which a system resident volume is created from a system storage file by an operator instruction at IPL. A media name instructing means for the system storage file volume that indicates the device name and the channel number of all the devices by reading the volume information and specifying the device name and the channel number for the specified media name. An operating system in a computer system, comprising: a device name and channel number acquisition means for media; and a restore processing means for creating the system-resident volume based on the media name, device name, and channel number. System initial load method for the system. 2. A computer system for creating a system resident volume from a system storage file according to an operator's instruction at IPL, and a volume storing the system storage file by a REST command for instructing the system resident volume at IPL The media name designating means for the system storage file volume designated by the media name, the media name designated by the media name designating means for the system storage file volume, and the one saved in the system interface area and used in the previous restore processing The system storage file volume check means that compares the media name of the system storage file volume, and the device name and channel number of all devices are acquired by the volume information read processing, and the specified media A device name corresponding to a media name, a device name of a designated medium for obtaining a channel number, and a channel number acquisition unit; and a restore processing unit for performing the system resident volume creation process based on the medium name, the device name, and the channel number, A computer system having a system storage file volume information inheriting means for saving the media name, device name, and channel number of the system storage file volume used at the time of restore processing in the system interface area and carrying over to the next restore processing. System initial loading method for operating systems.