JP3327138B2 - Time setting method for virtual information processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a virtual computer system, and more particularly to time setting of a virtual information processing apparatus.

[0002]

2. Description of the Related Art FIG. 2 shows a time value held by a time-of-day clock (hereinafter, referred to as an actual TOD) which controls a timekeeping function of a time clock mechanism for measuring the time of an information processing apparatus, FIG. 4 is a diagram showing a relationship with a time value held by a logical time-of-day clock (hereinafter, referred to as a logical TOD) that controls a clock function of a logical time clock mechanism that measures time.

In FIG. 2, an actual TOD value is a time value held by the actual TOD which controls the timekeeping function of the time clock mechanism for clocking the time of the information processing apparatus, and the time held by the actual TOD. The value is usually set to the same time as the value of the uninterruptible internal clock held by the information processing device when the information processing device is started up.

[0004] The logical TOD value is a time value held by a logical TOD that controls the clock function of the logical time clock mechanism, and the epoch difference value is the logical TOD value and the real TOD value.
This is a time value that holds the time difference from the D value.

That is, the logical TOD value is obtained by adding the epoch difference value to the actual TOD value. That is, the timing operation of the current time is performed by the actual TOD, and not by the logical TOD.

For example, a time storage instruction (hereinafter referred to as STC) issued by software operating on a virtual information processing apparatus.
The processing procedure of the K instruction is to take out the real TOD value held by the real TOD performing the timekeeping operation of the current time, add the epoch difference value to the real TOD value, and calculate the addition result as the logical TOD value. Is stored in the operand area of the result of the STCK instruction to notify the software running on the virtual information processing apparatus.

As one of the prior arts related to the selection control of the time value set to the actual TOD value in realizing the logical TOD, there is Japanese Patent Publication No. 6-44237, for example.

Means for setting a time value for the logical TOD which controls the timekeeping function of the logical timekeeping mechanism according to the prior art is based on S issued from software running on the virtual information processing apparatus.
The above-mentioned logical TOD value is designated as the operand of the CK instruction, and the epoch difference value, which is the difference between the actual TOD value and the logical TOD value, is stored in a separate time storage area for each virtual information processing device in the hypervisor. However, when assigning a logical central processing unit constituting a virtual information processing device to a real central processing unit, an epoch difference value relating to the virtual information processing device is selected.

[0009]

In the above prior art, the setting of the time in the logical time clock mechanism in the virtual information processing apparatus is performed by software operating on the virtual information processing apparatus.
It was necessary to issue a K instruction.

Further, when initialization processing is performed on the virtual information processing apparatus and the physical information processing apparatus on which the virtual information processing apparatus is constructed, software operating on the virtual information processing apparatus is re-started. , SCK instruction.

[0011]

According to the present invention, a time can be set to a logical time clock mechanism in a logical central processing unit belonging to a virtual information processing apparatus by an operator's input from a console device provided in a service processor.

Once, the information on the set time and setting format for the set logical time clock is stored in the external storage device of the service processor.

The time can be set to the logical time clock mechanism in the logical central processing unit belonging to the virtual information processing device by the input of the operator from the console device provided in the service processor, so that the virtual information processing device can perform the time setting. The time can be set to the logical time clock mechanism in the logical central processing unit without issuing the SCK instruction from the operating software.

Once the information on the set time and setting format for the set timekeeping mechanism is stored in the external storage device of the service processor, the time is automatically set for the logical timekeeping mechanism according to the stored information. Is possible, it is possible to minimize operator intervention.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an external storage device (10
1), a service processor (103) including a console device (102) (hereinafter, referred to as SVP), and two real central processing units (104, 105) (hereinafter, real IP1, real I).
P2) and one real storage device (106) (hereinafter M
S) and one input / output processing storage device (107) (hereinafter, referred to as IOP), and the MS is a control means for constructing a virtual information processing device. However, the hypervisor (130) is stored,
The hypervisor has two virtual information processing devices (110, 12
0) (hereinafter referred to as LPAR1 and LPAR2), and LPAR1 is composed of two logical central processing units (111, 1).
12) (hereinafter referred to as logical IP11 and logical IP12), and the LPAR2 includes two logical central processing units (121,
122) (hereinafter referred to as logical IP21 and logical IP22)
Is provided.

The hypervisor (130) can access an external storage device and a console device provided in the SVP via a hypervisor assist mechanism (140).

FIG. 3 shows that the hypervisor (130) is connected to the console (1) via the hypervisor assist mechanism (140).
02) is an example of a display / setting frame (hereinafter, referred to as a logical TOD frame) of the logical TOD displayed in FIG.

The operator operates the command input field (3
From 10), an LPAR selection command for setting the logical TOD is input. The hypervisor knows the LPAR selected by the operator via the hypervisor assist mechanism 140, and adds a mark to the area of the selection status display field (320) corresponding to the selected LPAR. Next, when the operator inputs a command (312) for instructing the setting from the command input field (310), the hypervisor sets the time setting field (330) and the time difference setting field (340) to the input mode to prompt the operator to input. .

For example, if the operator is LPAR3, LPA
When a command for selecting two RPARs of R4 is input, a mark (">" in FIG. 3) is added to the selection status display field corresponding to LPAR3 and LPAR4, and then a command for the operator to instruct setting (312). To set the time setting field and the time difference setting field corresponding to LPAR3 and LPAR4 to the input mode (in FIG. 3, the underlined portion is the input mode).

The operator selects either time setting or time difference setting, and sets a value in one of the time setting field (330) and the time difference setting field (340).

The hypervisor (130) is connected to the console (102) via the hypervisor assist mechanism (140).
The information set by the operator is obtained in accordance with FIG.
Is set in the logical TOD control information storage area (400) managed by the hypervisor. The logical TOD control information area is an area for holding logical TOD control information for each LPAR, and the entry n holds information of LPARn. The logical TOD control information area includes a time valid flag (401), a time difference valid flag (402), a time storage area (403), a time difference storage area (404), and an epoch difference value storage area (405).

The process of setting data in the logical TOD control information storage area will be described with reference to the flowcharts of FIGS.

The screen data set by the operator is taken into the working area of the hypervisor (hereinafter referred to as the screen data area) via the hypervisor assist mechanism (50).
0).

Next, an initial value 1 is set to a variable n specifying the number of the LPAR to be processed (501).

N is the maximum LP that can be constructed by the hypervisor
A test is made to see if the AR number is exceeded (502), and if the test 502 is satisfied, the processing is terminated via a path 540 (517).

If the test 502 is not satisfied, the value of the selected state display field of LPARn is taken out from the screen data area and tested for blank (503). If the test is successful, the process goes to processing 518 via the path 541.

If the test 503 is not satisfied, the values of the time setting field and the time difference setting field of LPARn are extracted from the screen data area (504), and it is tested whether both are blank (505). If the test is successful, the value of the time valid flag of LPARn is set to O
FF is performed (515), and LPARn is further processed.
The process (516) for turning off the value of the time difference valid flag is performed, and the process goes to process 518.

If test 505 does not hold, LPA
It is tested whether or not the value of the time setting field of Rn is blank (506).
It is tested whether the value of the time setting field of ARn is not a valid value (507). If the test 507 is satisfied, an error process (550) is performed. If the test 507 is not satisfied, the value of the time setting field of LPARn is set to TOD.
Is converted to a format (508), and this value is
Is stored in the time storage area 403 of the logical TOD control information storage area 400 (509).
Is set to ON, and the value of the time difference valid flag 402 is set to OFF (510), and the process goes to processing 518.

If test 506 fails, LPA
It is tested whether the value of the time difference setting field of Rn is not a valid value (511). If the test 511 is satisfied, error processing (551) is performed. If the test 511 is not satisfied, the value of the time difference setting field of LPARn is set to TO
D format (512), and this value is
n is stored in the time difference storage area 404 of the logical TOD control information storage area 400 (513), the value of the time difference valid flag 402 is turned on, and the value of the time valid flag 401 is turned off.
(514), and the process proceeds to processing 518.

In the process 518, 1 is added to the value of n, and the process returns to the process 502 via the path 547 to repeat the above process. This allows all LPARs selected by the operator
Is updated.

When the hypervisor constructs LPARn,
The epoch difference value of the virtual information processing apparatus is obtained from the logical TOD control information of LPARn set as described above.
This process will be described with reference to the flow of FIG. With reference to the logical TOD control information 400 of the LPARn to be constructed, it is tested whether or not the time valid flag 401 is OFF (610). If the test is successful, it is tested whether the time difference valid flag 402 is OFF (611). If this test is also satisfied, 0 is set in the epoch difference value storage area 405 of the LPAR (612). When the test 611 is established, the value of the time difference storage area 404 is put in the epoch difference value storage area 405 of the LPAR. When the test 610 is established, the difference between the actual TOD value and the value in the time storage area 403 is stored in the epoch difference value storage area 405 (613).

Therefore, the operator operates the logical TOD control frame 300 to obtain the following (A) to (C).
LP with logical TOD selected from three types of logical TOD
An AR can be built.

(A) LPA in logical TOD frame 300
By setting the time in the time setting field 330 of Rn, the time set by the operator can be given to LPARn as the initial logical TOD value when LPARn is constructed.

(B) LPA in the logical TOD frame 300
By setting the time difference in the time difference setting field 340 of Rn, a value obtained by adding or subtracting the time difference set by the operator to the actual time can be given as the logical time of the LPARn.

(C) By setting no value in the time setting field 330 or the time difference setting field 340 of the logical TOD frame 300, the same value as the actual TOD value can be given as the logical TOD value of LPARn.

Next, the operator sets the logical TOD frame 3
A description will be given of a case where a setting information storage command (312) is input after a command for selecting an LPAR is input from the command input field 310 of 00. The hypervisor selects the LPAR of the logical TOD control information 400.
Is selected, the hypervisor assist mechanism 140 is activated, and stored in the external storage device 101 connected to the SVP 103.

When the initialization process of the information processing apparatus is performed with the clearing of the MS 106 and the re-storage of the hypervisor in the MS 106, the hypervisor causes the hypervisor assist mechanism to function before constructing the LPAR, and the external storage connected to the SVP 103. The logical TOD control information stored in the device 101 is stored in the logical TOD control information storage area 400,
When constructing the LPAR, the epoch difference value is determined according to the procedure shown in FIG.

[0038]

According to the present invention, the operator selects one of a plurality of logical time setting formats displayed on the console device provided in the service processor and sends it to the logical time clock mechanism in the logical central processing unit belonging to the virtual information processing device. By enabling the time setting, it is possible to easily set the time to the logical time clock mechanism in the logical central processing unit without issuing an SCK instruction from software running on the virtual information processing device. . Further, once the set time and setting format for the set logical time clock are stored in the external storage device of the service processor, and the time is automatically set for the logical time clock according to the stored information, thereby intervening the operator. The number of times can be saved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a virtual information processing device constructed on a real information processing device.

FIG. 2 is a diagram illustrating a relationship between a real TOD of a real information processing apparatus and a logical TOD of a virtual information processing apparatus.

FIG. 3 is a display / setting frame for setting time to a logical TOD.

FIG. 4 is a control table for a hypervisor to control a logical TOD.

FIG. 5 is a flowchart showing a procedure for creating the control table of FIG. 4;

FIG. 6 is a flowchart illustrating a procedure for creating the control table of FIG. 4;

FIG. 7 is a flowchart showing a procedure for creating the control table of FIG. 4;

FIG. 8 is a flowchart illustrating a procedure for creating the control table of FIG. 4;

FIG. 9 is a flowchart illustrating a procedure for obtaining an epoch difference value from the control table of FIG. 4;

[Explanation of symbols]

101: external storage device 102: console device 103: service processor 104, 105: real central processing unit (real IP) 106: main storage device (MS) 107: input / output processing device (IOP) 111, 112, 121, 122: Virtual central processing unit (virtual IP) 110: 120: Virtual information processing device 130: Hypervisor 140: Hypervisor assist mechanism 300: Logical TOD frame 310: Command input field 320: Selection status display field 330: Time setting field 340: Time difference setting Field 350: Current logical time display field 400: Logical TOD control information storage area 401: Time valid flag 402: Time difference valid flag 403: Time storage area 404: Time difference storage area 405: Epoch difference value storage area

Continuation of front page (56) References JP-A-4-253227 (JP, A) JP-A-5-158721 (JP, A) JP-A-62-107341 (JP, A) JP-A-62-237532 (JP) JP-A-11-15558 (JP, A) JP-A-7-281781 (JP, A) JP-A-3-122727 (JP, A) JP-A-60-31649 (JP, A) (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 1/14 G06F 9/46

Claims (2)

(57) [Claims] 1. A central processing unit having a time clock mechanism for storing and measuring time, a main storage device connected to the central processing device, an input / output processing device, a console device, and an external storage device. A virtual information processing device constructed on an information processing device including a service processor, wherein a central processing unit, a main storage device, and an input / output processing device constituting the information processing device are logically divided or time-divided. A hypervisor stored in the main storage device is provided as control means for constructing the virtual information processing device by using the console. The hypervisor uses a console device and an external storage device provided in the service processor. And a hypervisor assist mechanism for logically dividing or time-divisionally using the hypervisor under the control of the hypervisor. In the virtual information processing apparatus composed of one or more logical central processing unit and logical main storage device and the logical output processing and logic time counting mechanism is, the hypervisor, the hypervisor assist mechanism
A plurality of virtual information processing device pairs
Enter the time setting field or time difference setting field
And displays the force mode, the hypervisor, operator time setting value or time difference settings set by the input from the console device
Obtaining a constant value via the hypervisor assist mechanism,
These were respectively stored for each of the plurality of virtual information processing apparatus in time storage area in said hypervisor, in the initialization process of the hypervisor of the virtual information processing apparatus, stored in the time storage area in said hypervisor, said A time setting method for a virtual information processing apparatus, wherein a time to a logical time clock is set based on a time setting value or a time difference setting value . 2. An external storage device provided in a service processor by operating the hypervisor assist mechanism by controlling the hypervisor with the time set value or the time difference set value stored in a time storage area in the hypervisor. After the initialization process of the information processing device including the process of clearing the main storage device constituting the information processing device and the process of restoring the hypervisor to the main storage device is performed, the information processing device is provided with the service processor. The time setting value or the time difference setting value stored in the external storage device, and stores the time setting value or the time difference setting value for each virtual information processing device in a time storage area in the hypervisor. in processing, stored in the time storage area in said hypervisor, theory based on the time setting value or the time difference setting value Claim, characterized in that to set the time to the time counting mechanism 1
The time setting method of the virtual information processing apparatus described in the above.