JPS6353651A - System closing system - Google Patents

Abstract

PURPOSE:To secure the data at the time of closing a system by executing the closing processing of a peripheral equipment by a RAS processor at the time of closing the system. CONSTITUTION:When a system closing factor occurs, RAS processor 2 receives the information, reads peripheral equipment closing information from a communication area 11 and executes the closing to an instructed peripheral equipment. In such a way, when a trouble occurs at a peripheral equipment close, it is reported to the RAS processor 2 as an input output status or an equipment attention. The RAS processor 2 outputs a trouble message to the system console of a CPU 1. When a CPU 1 develops trouble, the processor 2 recognizes the troubled equipment and the contents of the trouble through a signal line 21. When it is judged that the action of the system cannot by executed due to the trouble, the RAS processor 2 executes the same processing as the one when the lose information is received from an OS and executes the close of the peripheral equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to system close processing in a computer system, and particularly to peripheral device close processing.

(Prior Art) Conventionally, system closing processing was performed by the OS, and peripheral device closing processing was also realized as part of the OS closing processing.

(Problems to be Solved by the Invention) The closing process of peripheral devices by the conventional OS described above is as follows:
Since it can only be implemented in an environment in which the OS can operate, it has the disadvantage that it cannot be closed when the central processing unit fails. Especially in systems that operate unmanned,
When the system stops due to a failure of the central processing unit, the system power is turned off in order to increase safety and reduce wasteful power consumption9, but peripheral devices are not closed! , the power will be cut off. For this reason, electronic disks and cache-equipped disk controllers that employ the store-in method have the drawback that data on the RAM is not saved to the disk, resulting in data loss.

Further, in a magnetic tape device, the power supply is cut off while the tape is running halfway, resulting in damage to the tape.

SUMMARY OF THE INVENTION An object of the present invention is to provide a system closing method that eliminates the above drawbacks by enabling the RAS processor to close processing of peripheral devices when the system is closed, and is configured to secure data money when the system is closed.

(Means for Solving the Problems) The system close method according to the present invention connects peripheral devices and RA.
It is configured to include an S processor and a central processing unit.

The peripheral devices include a plurality of control devices and display means for displaying all the failures during the close process, and the RAS processor is for program control.

The central processing unit can transmit information to the RAS processor, and the OS sets all the close information of peripheral devices that require close processing when the system is closed, and causes the RAS processor to detect all system stoppages. This is for executing peripheral device close processing based on the peripheral device close information when a system close notification is reported from the OS or when a system stop is detected.

(Example〕 Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of a computer system to which the present invention is applied.

In FIG. 1, l is a central processing unit (hereinafter referred to as CPU), 2 is a system control unit of CPU1 (hereinafter referred to as S
It is called OU. ), 3 indicates a peripheral device. In 0PU1, 11 is the common M area,
12 is a main memory (hereinafter referred to as MMtJ), 13
14 is a system control device, and 15 is an input/output processing unit.

The RAS processor 2 is a processor for program control, and can perform input/output to the peripheral device 3 via the 5OUZ.
'i can be accessed. RAS processor 2
and each device inside 0PUI are connected by a diagnostic signal line 21, and a failure of OP U I is connected to the signal line 21'i.
It is reported to the RAS processor 2 via the RAS processor 2. Inside the MMU 12, there is an OS running on EPtJIB, RA, and S
A communication area 11 for communication with the processor 2 is secured. 4 inside 0PU1! Communication between the r device and the RAS grosser 2 is accomplished by interprocessor communication via SOU l4t.

FIG. 2 is an explanatory diagram showing all the peripheral device close information set in the communication area 11. In FIG. 2, 111 indicates channel/device information including a channel address including an alternative to the device to be closed and device address information, and 112 indicates a close command including a command to be issued for closing. The OS prepares this information for each peripheral device that requires closing.

FIG. 3 is an explanatory diagram showing the closed mode area 113 set in the communication area 11.

The mode area 113 consists of a 1-byte area, and when bit O is "1", it indicates that the peripheral device needs to be closed.

The peripheral device closing process when the system is closed will be described in detail below. 08 uses the peripheral devices of the OS as configuration information when starting up the system, prepares the peripheral device close information shown in FIG. 2 for each device that needs to be closed when the system closes, and sends these to the communication area 11. Set.

When a system close factor occurs, the OS sets the mode area 113 heavy according to the close factor, and
Notify AS processor 2 of system close.

When RAS processor 2 receives the system close notification,
Mode area 113' of communication area 11 (i-read 1 Bit O indicates whether closing of the peripheral device is requested or not.
”.

If the above closing is requested, the peripheral device close information is read from the communication area 11, and the channel/device information 111 is read.
Close command 1 for the peripheral device indicated by
At step 12, a command is issued to close the peripheral device.

The close command for peripheral devices differs depending on the device; for example, in the case of a magnetic tape device, it is a tape rewind/unload command, and in the case of an electronic disk device, it is a RAM
This is the command to save the above data to the save disk. When a peripheral device close fails, the failure is reported to RAS as an I/O status or device attention.
This is reported to the processor 2, and the RAS processor 2 outputs a failure message to the system console of 0PU1.

Next, when the 0PUI fails, the RAS processor 2 learns the failed device and the details of the failure through the signal line 21. If it is determined that the system cannot operate due to a failure,
The RAS processor 2 performs the same process as when receiving the close notification from the OS, and closes the peripheral device.

(Effects of the Invention) As explained above, the present invention provides R
By enabling the AS processor to close peripheral devices, it becomes possible to use peripheral devices with volatile memory, such as electronic disks, as system disks for an OS that cannot be closed from the OS. Moreover, in an unmanned operation system, peripheral devices can be closed before power is turned off, so there is an effect that volatile data can be saved and media can be preserved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment that completely implements the system closing method according to the present invention. FIG. 2 is an explanatory diagram showing peripheral device close information notified from the OS to the RAS processor. FIG. 3 is an explanatory diagram showing a mode area including a system close mode. 1...Central processing unit 2...RAS processor 3.
...Peripheral device 11...Communication area 12...Main storage device 13...Arithmetic processing unit 14...System control device 15...Input/output processing device 31.32...Control device 111.112 ...Data content 113...Mode area patent applicant NEC Corporation agent Patent attorney Hisashi Inoro'472 Ward 1

Claims (1)

[Claims] A peripheral device having multiple control devices and a display means for displaying a failure during close processing, and an RA for program control.
setting close information of the peripheral device that can transmit information to the S processor and the RAS processor, and whose close processing is requested by the OS in advance when the system is closed;
The RAS processor is configured to detect a system stop, and when a system close notification is reported from the OS or when the system stop is detected, the RAS processor executes the above process based on the close information of the peripheral device. A system closing method characterized by comprising a central processing unit for executing closing processing of peripheral devices.