JPH05197575A - Virtual computer monitoring device - Google Patents

Abstract

PURPOSE:To enlarge the operability of OS by substituting one console device to execute a processing for console devices assigned to operating systems(OS). CONSTITUTION:Virtual computer monitoring input/output parts 14 give an input/output request to the console devices 31-33 which a virtual computer monitor device 1 executes, to console device control parts 11-13 by adjusting it to the interface of the input/output request, by OSa21 and b22. Virtual computer command analyzing parts 15 analyzes a command inputted to the virtual computer monitoring device 1. OS selection parts 16 decide OS of an assignment destination from the analysis result of the virtual computer command at the time of exclusively sharing the assigned console devices 31-33 in OSa21 and b22. In such a case, console device assigning parts 17 simulates an assigned command to the console devices 31-33 which can operate OSa21 and b22 during operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is used in a virtual computer.
In particular, it is assigned to an operating system (OS) (assignment: reserve a portion of computer system peripherals for a particular purpose; this reserve usually lasts for the duration of a program). Related to management technology for console devices.

[0002]

2. Description of the Related Art A virtual computer system is a system that realizes a plurality of virtual computers by simultaneously operating a plurality of OSs on one computer system (actual computer). Each virtual computer has hardware, firmware, and control programs
Resources such as CPUs and input / output devices of real computers are distributed,
Operates independently without mutual interference. Therefore, on the virtual computer system, normal work and system test, simultaneous operation of multiple systems, online work upgrade,
Widely used for simultaneous development of different OSs (Reference, Electronic Information and Communication Handbook, 1988 edition, Ohmsha Co., Ltd.).

Such a console device assigned to each of a plurality of different OSs can access only the assigned specific OS, and other console devices cannot access the OS from the beginning. Is.

[0004]

[Problems to be Solved by the Invention]
When using a virtual machine with S, if there is no console device assigned to the OS to be accessed in the immediate vicinity, even if another console device is available, the console device assigned to the OS will be used. It was impossible to access the OS from other console devices only after making contact and inputting the assign command.

The present invention has been made against such a background, and a virtual computer system in which the operability of the OS is expanded by assigning an arbitrary OS from an arbitrary console device by a simple input operation. For the purpose of provision.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a plurality of different operating systems operating simultaneously on one real computer, a plurality of console devices for respectively operating the different operating systems, the console device and the operating system are provided. In a virtual machine monitoring device including a plurality of console device control units that respectively control connection with a system, the console device control unit is a console device from one of the plurality of console devices to the operating system. Means for receiving an assignment request via the console connection unit, and means for substituting one console device for each of the console devices assigned to the operating system by the assignment request. Characterized in that it comprises a part.

[0007] It is preferable that the acting means includes means that is activated by an assign request command pseudo-input to the operating system.

[0008]

[Function] There is a regular console device assigned to a certain OS (referred to as a normal console) and another vacant console device (referred to as another console), and the OS is accessed from another console by acting as a normal console. When it is desired to do so, the precondition is that the console is assigned to the OS. Therefore, first, the virtual computer monitor input / output unit in the console connection unit to which the other console is connected issues an input request instruction indicating that there is a command to be currently transmitted to the other console. The virtual computer monitor input / output unit that has received this input request instruction creates an input request, and sends the input request to the console device control unit (hereinafter referred to as another console device control unit) to which the other console is connected. Upon receipt of this input request, the input / output request receiving unit in the other console device control unit determines that the request is from the console connection unit, and sets the request source flag of the request source flag setting unit to the console connection unit. Set to one. Subsequently, the request distribution unit determines that the input request is from another console, activates the actual input / output processing unit, and inputs a command from another console.

This command is transferred to the virtual computer monitor input / output unit of the console connection unit. Subsequently, this command is input to the virtual machine command analysis unit and its contents are analyzed. If it is determined that this content is an assignment request to the OS, the OS of the assignment destination is determined,
The command is transferred to the console device assign unit related to the console device control unit (primary console device control unit) to which the OS corresponding thereto is connected. At the same time, the input / output request receiving unit of the primary console device control unit determines that this command is an assign request to the OS and sets the request source flag to another console.
The request distribution unit instructs the OS to input a request.
A pseudo command is sent from the OS command input pseudo section to the OS, and the OS command input pseudo flag is turned on.

Upon receiving this input pseudo command, the OS sends an input request. This input request is input to the input / output request reception unit of the main console device control unit, and this time the request source is the OS.
The request source flag is set as. Further, the request distribution unit turns off the OS command input pseudo flag. At the same time, in the console connection section, a series of pseudo assignment commands are sent from the console device assign section to the OS. In addition, the transmission of a series of simulated assign commands from this console device assign section
Due to the processing time, it is executed at a timing after the OS command input pseudo flag in the main console device controller is turned off. With the above procedure,
The assigning process to S is completed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the device of the embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention.

According to the present invention, two different OSa21 and OSb22 operating simultaneously on one real computer, two console devices 31 and 33 for operating the different OSa21 and OSb22 respectively, and the console devices 31 and 33. OSa21 and OS
In the virtual machine monitor device 1 including the two console device control units 11 and 13 that respectively control the connection with the b22, the console device control units 11 and 13
Includes an input / output request accepting unit 44 as a means for receiving an assignment request from one of the console devices 31 to 33 to the OSa 21 and OSb 22 via the console connecting unit 10, and assigning the input / output request. It is characterized in that it includes means for substituting one console device 31-33 for the console devices 31 and 33 respectively assigned to the OSa 21 and OSb 22 on demand as the elements 14-17 of the console connection unit 10.

Incidentally, other arbitrary console devices 31 to 3
The means for substituting for 3 is a configuration by the assign request command pseudo-input to OSa21 and OSb22.

In the apparatus of the embodiment of the present invention, two OSs are provided, and there are a virtual machine monitor apparatus 1 that operates two OSs at the same time, and OSa21 and OSb22 that operate under the control of the virtual machine monitor apparatus 1. .. Further, there are console devices 31 and 33 for operating the OSa 21 and OSb 22, and the console device 3 not assigned to the OSa 21 and OSb 22.
There are two.

Next, the operation of the apparatus of the present invention will be described.

The console device control units 11 to 13 serialize these requests so that the input requests from the OSa 21 and OSb 22 and the input request from the virtual machine monitor device 1 are not simultaneously issued to the console devices 31 to 33. ..

The virtual machine monitor input / output unit 14 matches the input / output request to the console devices 31 to 33 performed by the virtual machine monitor device 1 with the interface of the input / output request made by the OSa 21 and the OSb 22. Request the request to 13. The virtual machine command analysis unit 15 analyzes a command input to the virtual machine monitor device 1. When the OSa 21 and OSb 22 exclusively share the assigned console devices 31 to 33, the OS selection unit 16 determines the OS to be assigned from the analysis result of the virtual machine command. The console device assigning unit 17 includes the operating OSa 21 and the OS.
The assign command is simulated for the console devices 31 to 33 capable of operating b22.

Next, the operation of the console device control units 11 to 13 will be described with reference to FIG. FIG. 2 is a block diagram of the console device controllers 11 to 13.

The request source flag setting unit 46 sets a request source flag for determining whether the input / output request source is the OSa 21 and OSb 22 or the console connection unit 10. OS command input pseudo flag setting unit 45
Sets a flag simulating command input to OSa21 and OSb22. The input / output request reception unit 44
Sa21 and OSb22 or console connection unit 10
It receives an input / output request from and outputs the request source to the request source flag setting unit 46. Request distribution unit 43
Is the OS from the OS command input pseudo flag setting unit 45.
The command input pseudo flag and the request source flag from the request source flag setting unit 46 are checked to determine whether the input / output processing is actually performed or the input / output is simulated. Real input / output processing unit 4
2 performs the actual input / output processing when the request distribution unit 43 determines that the actual input / output processing is to be performed. The OS command input simulating unit 41 simulates the input of the assign command when the request allocating unit 43 determines that the input / output should be simulated, or the OS command input simulating unit 41 pre-sets the O request by the request from the console device assigning unit 17.
Turn on the S command input pseudo flag.

Here, the console device 32 is the OSa 21
The procedure of assigning to the OSa 21 on behalf of the console device 31 will be described.

The OSa 21 operating under the control of the virtual machine monitor device 1 is operated by being operated by the console device 31. When newly assigning the console device 32 to the OSa 21, the console device 32 issues an input request instruction to the virtual machine monitor device 1. This input request is first transmitted to the console connection unit 10 in the virtual machine monitor device 1. The console connection unit 10 that receives the input request is the virtual machine monitor input / output unit 14
Creates an input request, and requests the console device controller 12 to input a command from the console device 32. The console device control unit 12 receives the request at the input / output request receiving unit 44 and sets the request source flag setting unit 46 that the request source is the console connection unit 10. After that, the request distribution unit 43 determines the request source flag, the OS command input pseudo flag, and the instruction type. In this case, since the request source is the console connection unit 10, the actual input / output processing unit 42 inputs a command from the console device 32. The command input here is notified to the virtual machine monitor input / output unit 14, and the input / output of the command input of the virtual machine monitor device 1 is completed. The input command notified to the virtual computer monitor input / output unit 14 is analyzed by the virtual computer command analysis unit 15. If the analysis result of the command is an assign command to the OSa 21 of the console device 31, the OS selection unit 16 selects whether the OS to be assigned is the OSa 21 or the OSb 22. At this time, when the OS to which the console device 32 is assigned is determined in advance, the console device assigning unit 17 is notified of the assignment request of the console device 32 without passing through the OS selecting unit 16. Console device assigning section 17 that has received an assignment request from the console device 32 to the OSa 21
Notifies the console device controller 11 of the console device 31 of a command input pseudo required to assign the console device 32 to the OSa 21. The console device control unit 11 accepts that there is an input request at the OS command input processing pseudo unit 41, instructs the OSa 21 to make an input request, and turns on the OS command input pseudo flag. When the OSa 21 makes an input request,
The input / output request receiving unit 44 of the console device control unit 11
And the request source flag is received in OSa21 and OSb.
Set to 22. Then, the request distribution unit 43 determines the request source flag, the OS command input pseudo flag, and the instruction. In this case, the instruction is an input instruction, the OS command input pseudo flag is ON, and the request source flag indicates OSa21 and OSb22. Therefore, the OS command input pseudo unit 4
1 turns off the OS command input pseudo flag, and OSa
21 is notified of a series of commands for assignment simulated by the console device assigning unit 17. With the above flow, the assigning process of the OSa 21 of the console device 32 is completed.

In the apparatus of the embodiment of the present invention, two OSs have been described, but any number of OSs can be used in the same manner. Although the procedure in which the console device 32 that does not belong to either OSa21 or OSb22 is assigned to OSa21 is shown as an example, it is possible to assign it to OSa21 even if the console device 33 that belongs to OSb22 is suspended. is there.

[0023]

Since the assignment to any OS can be performed from any console device by a simple input operation, the operability of the OS can be expanded. In particular, when a failure occurs, it becomes easier to deal with it, and it becomes possible to recover in a short time.

[Brief description of drawings]

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

FIG. 2 is a block diagram of a console device control unit of the device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Virtual machine monitor device 10 Console connection part 11-13 Console device control part 14 Virtual machine monitor input / output part 15 Virtual machine command analysis part 16 OS selection part 17 Console device assign part 21 OSa 22 OSb 31-33 Console device 41 OS command Input pseudo unit 42 Actual input / output processing unit 43 Request distribution unit 44 Input / output request reception unit 45 OS command input pseudo flag setting unit 46 Request source flag setting unit

Claims (2)

[Claims] 1. A plurality of different operating systems operating at the same time on one real computer, a plurality of console devices for operating the different operating systems, and a connection between the console devices and the operating system, respectively. In a virtual machine monitoring device including a plurality of console device control units, the console device control unit sends an assignment request to the operating system from one console device of the plurality of console devices via a console connection unit. And a means for receiving the console device assigned to the operating system by the assignment request on behalf of the one console device in the console connection unit. Virtual computer monitor device. 2. The virtual machine monitor apparatus according to claim 1, wherein the means for acting includes a means for starting by an assignment request command pseudo-input to the operating system.