JP3108467B2 - Automatic switching method of IPL device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

In the present invention, a plurality of operation systems are prepared, and one system which is arbitrarily determined is always subjected to IPL.
The present invention relates to an automatic switching method of an IPL device in which a PL system can select an appropriate operation system according to a day or a day of the week and automatically switch the operation system.

For example, there is a demand that an operation system different from a normal operation is loaded on a computer only on a holiday and processed by the operation system for the holiday. There is a need for a technique for automatically switching such operation systems.

[0003]

2. Description of the Related Art Conventionally, as a method for enabling unmanned / automatic operation, schedule information such as a date and a day of the week when power is turned on in a service processor (SVP) is registered.
At that date and time or day of the week, a method of automatically turning on the power to the computer system by an automatic power control device is used. At this time, a device number to be subjected to IPL can be registered in advance.

However, the IPL device number cannot be changed depending on the day or the day of the week, and the IPL device number of the system which starts up when the power is turned on is fixedly determined by the registered contents.

Therefore, as a method of changing the operation depending on the day or the day of the week, for example, in a banking day, a method of preparing a plurality of IPL devices of the system and manually switching the operation on the day when the operation is changed has been conventionally used. I have. The problem with this method is that it requires manual intervention.

In a system where unmanned / automatic driving is always used, an IPL set in a service processor (SVP) is used.
Changing the device number requires that the unmanned / automatic operation be temporarily suspended and that an operation error may occur. This has impaired complete unmanned / automated operation.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and the program automatically recognizes the operation system and changes the IPL device number according to day or day of the week, thereby eliminating the need for manual intervention. The purpose is to enable switching of operation systems.

[0008]

FIG. 1 is a diagram illustrating the principle of the present invention. In FIG. 1, 10 is a central processing unit (CPU) for operating the operation system, 11 is a main storage device, 12
Is a service processor (SVP) having a system control function and an operation state monitoring function, and 13 is a registered IP address.
An IPL device number storage unit for storing the L device number,
14-1 and 14-2 are IPL devices, 15 is correspondence table reading processing, 16 is IPL device machine number recognition processing, 17
Is an operation day / day of the week check process, 18 is an IPL device machine number change / re-IPL process, 19 is a correspondence table registration process, 20-
Reference numerals 1 and 20-2 denote correspondence tables for storing correspondence information between IPL device model numbers and operation date information.

The plurality of operation systems S1 and S2 are stored in IPL devices 14-1 and 14-2, respectively. In the present invention, correspondence information between the machine numbers of the IPL devices 14-1 and 14-2 and the operation date information of the operation systems S1 and S2 IPLed from each of the IPL device machine numbers by the correspondence table registration processing 19 in advance. To Table 20-
1, and 20-2 are registered and stored in advance. The correspondence table may be stored in the storage device of the SVP 12.

[0010] The SVP 12 performs IPL by automatic IPL.
From the devices stored in the device number storage unit 13,
When the operation system S1 or S2 is loaded into the main storage device 11, the following processing is performed by the loaded program.

The correspondence table reading process 15 causes the correspondence table 2
0-1 or the correspondence table 20-2 is read. The correspondence tables 20-1 and 20-2 have the same contents. If the first IPL device number is fixed, only one correspondence table may be used.

Next, the IPL device number used this time is recognized by the IPL device number recognition processing 16. The operation day / day of the week check process 17 refers to the contents of the correspondence tables 20-1 and 20-2 to determine whether the IPL device number of the current operation system matches the current operation day or the day of the week. Check if.

If it is correct, the operation is continued. If the IPL device number is not correct, the IPL device number set in the SVP 12 is changed by the IPL device number change / re-IPL processing 18, and the IPL is instructed to the SVP 12 again.

Thus, the operation systems S1 and S2 are automatically switched according to the day or the day of the week. The date and time are
A PTOD (permanent TOD) clock in the SVP 12 or a clock obtained from an external monitoring device and set as the TOD clock of the CPU 10 can be used.

[0015]

When the system is automatically IPLed, an IPL device number and a date / day correspondence table 20-1 are set at the initial setting stage.
Or read 20-2. Also, if the system is an automatic IP
The day / day of the week L is obtained from the timer mechanism of the central processing unit 10, and the IPL device number given from the SVP 12 at the time of IPL is recognized. This is checked according to the contents of the correspondence table, and if the relationship between the date / day of the week and the IPL device number is correct, the initial setting is completed.

If not correct, the correspondence tables 20-1 and 20-
2, the IPL device number corresponding to the day / day of the week is taken out, and after confirming that the device is an IPL-capable device, SV
The IPL device number set in P12 is changed.
Then, by the existing DIAGNOSE instruction, re-IP
L is indicated.

As described above, the IPL device can be automatically recognized and the operation system can be dynamically changed. Therefore, even in unmanned / automatic operation, for example, it is possible to use the operation system S1 on weekdays and operate using the operation system S2 on holidays.

[0018]

FIG. 2 is an explanatory view of an automatic operation relating to an embodiment of the present invention. The automatic operation in the system to which the embodiment of the present invention is applied is performed as follows. First, in the automatic driving environment setting, as shown in FIG. 2A, an administrator creates a schedule, and causes the main storage device 11 to read the calendar information 23 of the created schedule by a control program.
The control program notifies the SVP 12 of the calendar information 23 by a DIAGNOSE instruction instructing writing of the calendar information 23.

The SVP 12 is an automatic power control device (AR
C: Automatic & Remote Power
rController) 21 and give the schedule of the next day. The automatic power control device 21 stores the schedule.

When the operation is completed, the control program
Execute the OFF OFF DIAGNOSE instruction and turn off the power. By setting the environment for automatic driving described above,
Automatic power-on is performed as shown in (b). That is, the automatic power control device 21 turns on the power of the SVP 12, the central processing unit 10, the main storage device 11, and the input / output device group 24 one after another at the date and time of the schedule.

If the automatic IPL mode is set in the SVP 12 in advance, after the power is turned on, (c) in FIG.
As shown in (1), automatic IPL is performed. That is, SV
P12 instructs an input / output device of a preset IPL device number to perform an IPL operation. As a result, the program is loaded from the IPL device 14 into the main storage device 11, and when the loading is completed, the central processing unit 10 executes the program.

In this embodiment, for example, the following DIAG
Use the NOSE instruction. Note that the commands described below are well-known, and will be described only briefly here. (a) READ CALENDER instruction This instruction instructs to read out the power on / off schedule information held in the SVP 12 to a designated area of the main storage device 11. The power on / off schedule information includes an automatic power control flag indicating whether the automatic power supply is enabled or disabled, year and month schedule information for specifying the date and time of the schedule, power on time, power off time, and use day of the week. And the like, and monthly schedule information for specifying a power-on time and a power-off time from 1st to 31st.

(B) WRITE CALENDER instruction This is an instruction to update the power on / off schedule information held in the SVP 12 with the contents of the designated area of the main storage device 11.

(C) SPECIFY IPL DEVIC
E LIST command This is a command used for registering or referencing an automatic IPL device number. With this command, automatic IPL for SVP12
Can be specified.

(D) READ IPL MODE command This command indicates whether the last executed IPL mode is the automatic IPL mode or the manual IPL mode.

(E) START IPL command This is a command for recognizing the IPL device number and starting the IPL.

FIG. 3 shows a processing flow of an embodiment of the present invention. In the following description, ~ indicates the processing shown in FIG.
Corresponding to The IPL is executed from the device number of the IPL device X registered in the SVP 12 in advance, and the system is read into the main storage device 11. The registration of the IPL device number is performed by SPECIFY IPL DEVICE LI.
This is performed by the ST instruction.

After the IPL, system initialization processing is performed, and I / O device confirmation, system date and time setting, and other processing are performed. READ IPL MODE instruction causes IPL
The mode is read to determine whether the mode is the manual IPL mode or the automatic IPL mode. At the time of the manual IPL mode, the process proceeds to a normal process similar to the conventional process.

In the automatic IPL mode, a correspondence table 2 for storing correspondence information between IPL device model numbers and operation date information
0-1 or 20-2 is read from the IPL device X into the main storage device 11.

The system time and day of the week are read from the timer mechanism, and the current IPL device number is extracted. It is checked whether or not the IPL device belongs to today's operation system by referring to the correspondence table 20-1 or 20-2. If the IPL device is the correct operation system of the day, the processing shifts to normal processing. If the IPL device is not correct, the process proceeds to processing.

SPECIFY IPL DEVIC
The change of the IPL device number is notified to the SVP 12 by the E LIST command. Then, an IPL is instructed by a START IPL command. As a result, the SV
The IPL is executed by P12, and the system is IPLed. Thereafter, the following processing is similarly performed, and the initial setting ends.

[0032]

As described above, according to the present invention,
Even when the operating system must be changed by day or day, it can be changed automatically. Therefore, unattended / automatic driving is not interrupted, and erroneous operation due to manual intervention is prevented. In addition, it is possible to reduce the number of man-hours and the number of responding personnel when changing the operation of the system.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is an explanatory diagram of automatic operation related to an embodiment of the present invention.

FIG. 3 is a diagram showing a processing flow of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Central processing unit 11 Main storage device 12 SVP 13 IPL device unit number storage unit 14-1, 14-2 IPL device 15 Correspondence table reading process 16 IPL device unit number recognition process 17 Operation day / day of the week check process 18 IPL device unit number Change / re-IPL processing 19 Correspondence table registration processing 20-1, 20-2 Correspondence table S1, S2 Operation system

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 9/06 G06F 9/445 G06F 1/00

Claims (1)

(57) [Claims] 1. A method for automatically switching IPL devices in a computer system having a service processor (12) and having a function of performing automatic IPL according to an IPL device number preset in the service processor (12), comprising the steps of: And pre-registering and storing correspondence information between the service numbers and the operation day information of the operation system (S1, S2) IPLed from each IPL device number (1).
9), when the operation system is IPLed by the automatic IPL, the correspondence information is read and the IPL of the current operation system is read.
Steps (15, 16, 17) for checking whether the device machine number matches the current operation day or day of the week, and, if the IPL device is incorrect, the IPL device machine set in the service processor (12). Changing the number and instructing re-IPL (18), and automatically switching the operation system according to the day or day of the week.