JPH05334270A - Constitution control system and composite information processing system - Google Patents

Abstract

PURPOSE:To provide a means for changing the constitution of a composite information processing system including a virtual computer. CONSTITUTION:This system is equipped with a means which preliminarily communicates a constitution change announcement information including at least information for identifying the origin of transmission of the instruction of the disconnection of a logical connection from an actual computer 2 which instructs the disconnection of the logical connection to a virtual computer 6 whose logical connection is disconnected before the constitution change, and a means which operates the constitution change after the fact that the constitution change announcement information is normally communicated to the virtual computer 6 whose logical connection is dis-connected is confirmed by the actual computer 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a means for realizing a flexible system construction function in a complex information processing system including a virtual machine in its configuration. A complex information processing system that combines a plurality of information processing systems and performs cooperative processing requires a large facility cost and the like. Therefore, there is a strong demand for logically dividing one facility, and flexible virtual complex information. The construction function of the processing system is strongly required.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG. 10, a real composite information processing system (hereinafter, "R-SCMP") sharing a real storage device (hereinafter, "R-SSU") 201 is shared.
That. ) 200, a plurality of real computers (hereinafter, referred to as “RM”) 202 to 20 configuring the system.
One or more of the four virtual machines (hereinafter "V
M ”. ) May be built.

As shown in FIG. 11, one [R-SC
MP] 200, logically plural virtual composite information processing systems (hereinafter, referred to as “V-SCMP”) 205, 20.
6 is constructed, each V-SCMP, that is, [V-SCMP1] 205, [V-SCMP2] 20.
Each of the 6 requires logically independent configuration control.

Specifically, the influence of the configuration change of [V-SCMP1] 205 must not affect the [V-SCMP2] 206, and the influence of the configuration change of [V-SCMP2] 206 must be [V-SCMP2] 206. SCMP1] 205 should not be affected.

Therefore, for example, [R-SSU] 2 used by [VM1] 209 constructed in [RM2] 203.
01 and [RM2] 203 change the logical connection state,
Another [VM2] built on the same [RM2] 203
Do not disturb the logical operation of 210. This is controlled by a virtual machine monitor (hereinafter referred to as “VMM”) 211.

In FIG. 11, [R-SSU] 201
Is logically divided into two regions, [R-SS
U] 201 includes two virtual storage devices (hereinafter, “V-
SSU ". ) 207 and 208 are formed.

The [RM1] 202 and the [VM1] 209 constructed on the [RM2] 203 are the [R-SSU] 2
Share [V-SSU1] 207 constructed in 01,
It realizes [V-SCMP1] 205.

[V] constructed in [RM2] 203
M2] 210 and [RM3] 204 are [R-SS
The [V-SSU2] 208 constructed in the [U] 201 is shared, and the [V-SCMP2] 206 is realized.

As means for logically dividing the [R-SSU] 201 into a plurality of areas, a method of limiting the base and upper limit of the area by using a register, and sharing of an address conversion table to create a real storage space There are methods such as logical division.

FIG. 12 shows a logical configuration of the composite information processing system shown in FIG. In FIG. 12, in [V-SCMP1] 205, [RM1] 202
And [VM1] 209 are both [V-SSU1] 207.
Is logically connected to. Similarly, [V-SCMP
2] 206, [VM2] 210 and [RM3] 204
And are both connected to [V-SSU2] 208.

Here, the [RM1] 202 belonging to the [V-SCMP1] 205 changes the configuration of the [V-SCMP1] 205, and the [VM1] 209 and the [V-SSU1] 20 are changed.
Consider the case of disconnecting the logical connection with 7.

At this time, as shown in FIG. 13, [RM
1] 202 has [RM2] 203 and [R-SSU] 20
If the logical connection with 1 is disconnected, [V-SCMP1] 2
[VM1] 209 and [V-SSU1] 20 in 05
The logical connection with 7 can be broken.

However, [R-SSU] 201 and [RM-SSU] 201
2] 203 is the actual connection path to [V-SCMP2] 20
6 [VM2] 210 and [V-SSU2] 208 are shared with the logical connection path. So, in fact,
The [RM1] 202 and the [VM1] 209 and the [R-SS]
U] The operation of disconnecting the logical connection with 201 is not allowed.

Therefore, the [VMM] 211 is replaced by the [VM1] 2
09 and [V-SSU1] 207 are intercepted, and a state where the bus is logically disconnected is simulated for [V-SCMP1] 205. By doing so, [V-SCMP1] 2
[V-SSU1] 207 and [VM1] 20 in 05
Show as if the logical connection with 9 was broken.

However, if an R-SSU configuration control mechanism is to be provided with a mechanism for controlling the logical connection state of a plurality of V-SCMPs, the physical quantity increases and it is strongly required in the VM environment. It limits the flexible system construction.

[0016] Therefore, the R-SSU includes, in particular, the V-SC.
A mechanism conscious of the form of MP is not provided, and all configuration changes are treated as changes in the logical connection state with the RM connected to the R-SSU.

Then, the R in which the VM is installed
In M, following the disconnection of the logical connection state between this RM and R-SSU, the VMM has the RM and R- to which it belongs.
The logical connection with the SSU is restored to the connected state. afterwards,
The VMM recognizes the state of the V-SCMP under its control and simulates the connection state between the VM and the V-SSU in each V-SCMP.

[0018]

In the conventional R-SCMP, a plurality of VMs are placed in the RM in which the VM environment is constructed. However, with the multiple VMs, different V-SC
When attempting to configure the MP, the following problems occur.

In FIG. 12, [V-SCMP1] 20
5, or [V-SCMP2] 206, the [VMM] 211 needs to identify the issuer of the configuration change instruction in order to accurately perform the configuration control processing closed.

The reason is [RM2] 203 and [RS].
When the logical connection with the SU] 201 is disconnected, is the cause of the disconnection the result of the configuration change processing in the [V-SCMP1] 205, or the [V-S
This is because it is unclear to the [VMM] 211 of the [RM2] 203 whether the result of the configuration change processing in the CMP 2] 206 is unclear.

However, the conventional R-SSU does not have a special mechanism for realizing V-SCMP for the above reason. Therefore, each RM or VM is R-SC
Assuming that there is one V-SCMP on MP, R
-Change the logical connection state between the SSU and each RM.

It is not impossible to guess which V-SCMP wants to make what kind of change from the information before the change of the logical connection and the information after the change, but the guess logic is complicated. is there. Further, as a result, a plurality of configuration change cases may be applicable, which is not practical.

In other words, controlling the state of the virtual logical connection and the state of the real logical connection by inferring from the result of the configuration change is not a very good method from the viewpoint of reliability and performance. I can not say.

Therefore, in practice, only one VM that can be used as a constituent element of V-SCMP can be constructed in terms of practical use and reliability. That is, R-S
Only one V-SCMP can be configured for CMP.

In other words, the number of VMs that can make up V-SCMP is limited to one. Therefore, conventionally, the advantage of introducing the VM environment into the RM is only that the VM independent of the V-SCMP can be generated while configuring the V-SCMP.

In order to facilitate understanding, these problems will be specifically described below with reference to the drawings. FIG.
Is [V-SCMP1] 205, [V-SCMP2] 2
06 and its components are expressed as a concept independent of the actual form of the device. FIG. 14 shows a configuration example of an actual device for comparison with FIG.

In FIG. 13, [V-SSU1] 207
And [V1] 209, and [V-SSU
2] 208 and [VM2] 210 are connected by the route shown in FIG.
As shown in, the [R-SCMP] 200 shares a physical path.

That is, in FIG. 13, [V-SSU
1] 207 and [VM1] 209 are disconnected by a process of [R-SSU] 20 in FIG.
This is an operation of disconnecting the physical route between 1 and [RM2] 203.

The result of the cutting is shown in FIG.
-SSU1] 207 and a route connecting [VM1] 209, and [V-SS that shares a physical route with this route]
The route connecting the U2] 208 and the [VM2] 210 will also be cut.

At this time, when the [VM1] 209 accesses the [V-SSU1] 207 in the [V-SCMP1] 205, this access is recognized as an access exception. However, this access exception is
No contradiction occurs.

Similarly, [V-SCMP2] 206
When the [VM2] 210 belonging to the [VM2] 210 accesses the [V-SSU2] 208, an access exception similarly occurs.
This access exception is a problem.

Because, logically, [V-SSU2]
Since the disconnection operation of the route connecting 208 and [VM2] 210 has not been performed, [VM2] 210 is
This is because it must be possible to normally access U2] 208.

In order to solve this problem, first, referring to FIG.
In [RM2] 203 shown in FIG. 4, the [VMM] 211 is
The connection route between [R-SSU] 201 and [RM2] 203 is restored.

[VMM] 211 then returns to [VM
1] 209 to [R-SSU] 201 and [RM2] 20
Simulate an access exception as if the path to 3 was broken. In addition, from [VM2] 210 to [R-SS
The access to [U] 201 is controlled to be performed normally.

However, [VMM] on [RM2] 203
The 211 cannot recognize that the route between the [R-SSU] 201 and the [RM2] 203 is disconnected at the time of the disconnection. The [VMM] 211 is the [VM1] 20
9 or the disconnection is recognized only when the access to [R-SSU] from [VM2] 210 is reported as an access exception.

That is, the [VMM] 211 changes to the [R-SS
What can be recognized regarding the disconnection from [U] 201 is [R
The connection route between M2] 203 and [R-SSU] 201 is
Only the result of being cut off by someone.

Therefore, [VM1] 209 is replaced by [R-
SSU] 201 should be inaccessible,
It is impossible to determine whether [VM2] 210 should be inaccessible to [R-SSU] 201 thereafter.

The present invention has been made in view of such conventional problems, and in the case where a virtual composite information processing system including a virtual computer formed on an actual computer as its constituent element is constructed. In the above, it is an object of the present invention to provide a means for realizing a flexible configuration change of the logical connection state.

[0039]

According to the present invention, the above object is achieved by means as set forth in the claims.

That is, the invention of claim 1 has a plurality of real computers for performing information processing, a real shared storage device shared by the plurality of real computers, and a communication means for connecting the real computers. By sharing information and communicating information, it is possible to perform cooperative processing by multiple real computers, and at least one real computer has at least one virtual computer and a virtual computer monitor that manages this virtual computer. In addition, the real shared storage device has at least one virtual shared storage device, and by providing a communication unit that connects the virtual computer and the real computer and that connects the virtual computer and the virtual computer, It is possible to perform cooperative processing by a real computer and a virtual computer, and when performing cooperative processing by a plurality of real computers and virtual computers, By appropriately dividing the virtual machine, a plurality of different information processing systems having one or a plurality of real machines and a virtual machine can perform a plurality of different coordinated processes, and the one or a plurality of real machines and the virtual machine. One information processing system having a computer includes at least one virtual computer whose configuration can be flexibly changed by providing means for changing the logical connection state of an arbitrary real computer or virtual computer. In the complex information processing system, the logical connection is changed from the real computer whose configuration is to be changed or the real computer to which the virtual computer whose configuration is to be changed belongs before changing the configuration of the real computer or the virtual computer. At least the real computer or the real computer to which the virtual computer whose logical connection is changed belongs The configuration change notice information including information for identifying the source of the change instruction,
The configuration change notice information is normally notified to the means for notifying beforehand and the real computer to which the logical connection state is changed or the virtual computer to which the logical connection state is changed belongs to. Or that the condition that the configuration change notice information is normally notified is satisfied, the fact that the real computer that attempts to change the configuration or the real computer to which the virtual computer that attempts to change the configuration belongs It is a configuration control system that is provided with means for changing the configuration after confirmation.

According to the invention of claim 2, a real storage means for holding the configuration change notice information is provided for each real computer or virtual computer, and the real computer separated from the complex information processing system by the configuration change. When a virtual machine is built on the above, after the disconnection, the access to the virtual shared storage device by any virtual machine belonging to the separated real computer is recognized as an exception, and the unique Before or after referring to the configuration change notice information stored in the storage means,
The logical connection between the real computer to which the virtual computer belongs and the real shared storage device is restored by the control of the virtual computer monitor, and thereafter, the virtual computer monitor manages each composite computer to which each virtual computer under its control belongs. It is a configuration control method for controlling logical configuration information of an integrated information processing system by controlling logical connection information of the information processing system and simulating behavior of the virtual shared storage device.

The invention according to claim 3 is a general-purpose communication mechanism such as a channel when notifying interrupt control information indicating arrival of configuration change notice information to a real computer whose logical connection state is to be changed. And a real computer to which a configuration change instruction or a virtual computer to issue a configuration change belongs is disconnected from the complex information processing system by using the communication path. The real computer that is reconnected to the complex information processing system is notified of the configuration change notice information in advance prior to the configuration change, and the real computer that is to be disconnected or reconnected will change the notified configuration change notice information to When the interruption indicating the arrival of the configuration change notice information is received while the information is held in the unique storage means, the arrival of the configuration change notice information is triggered by this interrupt. A complex data processing system comprising a configuration control mechanism by the configuration control system recognizes.

Further, according to the invention of claim 4, in the case of notifying interrupt control information indicating arrival of the configuration change advance notice information to the real computer whose logical connection state is to be changed, the system signal processor instruction is used. Is a composite information processing system having a configuration control mechanism according to a configuration control method in which a sub-instruction code for indicating arrival of configuration change notice information is added to the system signal processor instruction.

Further, according to the invention of claim 5, when the interrupt control information indicating the arrival of the configuration change notice information is notified to the real computer whose logical connection state is to be changed, an instruction to change the configuration is issued. A computer or a real computer to which a virtual computer that directs a configuration change belongs stores a configuration change advance notice information in advance in a shared storage area provided on an actual shared storage device prior to the configuration change, and a mechanism for a system signal processor instruction. In addition, by adding a sub-instruction code, the fact that the configuration change notice information is stored in the shared storage area, from the actual computer of the side to change the configuration,
The real computer that has changed the configuration notifies the real computer that has changed the configuration, and an interrupt is generated when the storage of the configuration change notice information is completed. Is a composite information processing system for reconnecting the real computer to which the machine belongs to the real shared storage device and recognizing the configuration change notice information stored in the real shared storage device.

Further, according to the invention of claim 6, in the case of notifying interrupt control information indicating arrival of the configuration change notice information to a real computer whose logical connection state is to be changed, the real computer is to be stored in the real shared storage device. By storing the configuration change notice information in advance in the shared storage means such as shared DASD other than the shared storage area to be provided prior to the configuration change, and adding the sub instruction code to the mechanism for the system signal processor instruction, Information indicating the completion of storing the configuration change notice information in the shared storage means is propagated from the transmitting side real computer to the receiving side real computer, thereby causing the receiving side real computer to generate an interrupt, and the receiving side is triggered by this interrupt. The real computer recognizes that the configuration change notice information is stored in the shared storage means, and the virtual computer monitor belonging to the receiving-side real computer is By recognizing the configuration change notice information stored in the storage means is a complex information system for reconnecting an actual computer itself belongs as needed to the actual shared storage device.

In addition, the invention of claim 7 is the real computer for changing the configuration when the interrupt control information indicating the arrival of the configuration change notice information is notified to the real computer whose logical connection state is to be changed. Alternatively, the real computer to which the virtual computer whose configuration is to be changed belongs stores the configuration change notice information in advance in a shared storage area provided on the real shared storage device, and each real computer and the virtual computer are in that area at regular time intervals. The real computer or the virtual computer designated as the destination of the configuration change notice information reads the configuration change notice information, writes the configuration change notice information in the own storage unit owned by itself, and in the shared storage area, Information indicating that the configuration change notice information has been recognized is recorded, while the real computer or virtual computer whose configuration is to be changed is The virtual machine monitor belonging to the real machine whose configuration is to be changed is detected in the unique storage means while detecting the recognition of the configuration change notice information by the real computer or the virtual machine whose configuration is to be changed and using this as a trigger. A composite information processing system including a configuration control mechanism according to a configuration control method for reconnecting a real computer to which the computer belongs to a real shared storage device when necessary by recognizing the stored configuration change notice information.

According to the invention of claim 8, in restoring a disconnected virtual connection path, from a real computer whose configuration is to be changed, or a real computer to which the virtual computer whose configuration is to be changed belongs, A real computer or a virtual computer that attempts to change the configuration by notifying the real computer to which the configuration is changed or the real computer to which the virtual computer to which the configuration is changed belongs of the configuration change notice information in advance After the notification is confirmed, a configuration change that conforms to the announced configuration is made, and the real computer or the real computer to which the virtual computer to which the configuration change applies belongs to the virtual machine triggered by the notification of the configuration change notice information. A virtual configuration control mechanism that controls the logical connection between the virtual computer managed by the computer monitor and the virtual shared storage device that belongs to the real shared storage device, disconnects the logical connection. A complex data processing system comprising a configuration control mechanism according to configuration control system for the old.

The cause of the problems shown in the section of the problem to be solved by the invention of the present specification is that, when V-SCMP is configured, the configuration changing operation from which V-SCMP is seen from the VMM. As a result, the RM to which the R-SSU and VMM belong
It is considered that it is not possible to identify whether the logical connection with and has been changed.

Therefore, in the present invention, before actually changing the configuration, from the RM to which the configuration is to be changed or the RM to which the VM to be changed belongs, to the VMM,
It provides information capable of identifying which V-SCMP, which RM or VM has made the configuration change.

By providing this information, the VMM after recognizing the configuration change establishes a simulation algorithm to be performed on the VM, and realizes accurate configuration control even when there are a plurality of V-SCMPs.

1 and 2 are explanatory views of the principle of the present invention. FIG. 1 shows the principle of the present invention in consideration of an actual device, and FIG. 2 shows its logical concept. Figure 1
In, three [RM] s 2-4 are one [R-SS
U] 1 and shares this [R-SSU] 1.

A [VMM] 5 is placed in the [RM2] 3, and [VM1] 6 and [VM2] 7 are constructed under the control of this [VMM] 5. The logical connection between the [R-SSU] 1 and each of the [RMs] 2 to 4 is controlled by the logical configuration control mechanisms 8 to 10 in connection and disconnection states.
When changing the connection state, an instruction is given from the [RM] 2-4 to the logical configuration control mechanisms 8-10.

When the [RM] s 2 to 4 change the logical connection state of the [R-SSU] 1 with the other [RMs] 2 to 4, the RMs instructing the disconnection to the RMs to be disconnected. The configuration change notice information is notified in advance. [R
M] 2 to 4 are provided with unique storage means 11 to 13 for holding the configuration change notice information, and other [RM] 2 to 4
And communication mechanisms 14 to 16 for communicating with.

These actual devices can be logically understood as a form as shown in FIG. 2 by the action of the [VMM] 5. In FIG. 2, [RM2] 3 is logically divided into [VM1] 6 and [VM2] 7.
[R-SSU] 1 is logically [V-SSU]
1] 17 and [V-SSU2] 18.

Thus, [RM2] 3 and [R-SS]
U] 1 by dividing [V-SCMP1]
And [V-SCMP2] are constructed. At this time, R
A logical communication path interconnecting M or VM is in a form that enables communication between RMs and VMs that belong to the same V-SCMP.

The [VMM] 5 is provided with virtual configuration control mechanisms 19 and 20 for the [VM] s 6 and 7, respectively. When the VM issues an access to the V-SSU, the virtual configuration control mechanisms 19 and 20 confirm the logical connection state between the VM and the V-SSU. If the logical connection state is the disconnection state, an access exception is simulated for the VM.

[0057]

First, referring to FIG. 1 or 2, [RM1] 2
Does not disconnect the logical connection between [VM2] 7 and [V-SSU2] 18, but [VM1] 6 and [V-SSU2]
1] A case of disconnecting the logical connection with 17 will be described.

A) Notification of configuration change notice information [RM1] 2 is [VM1] 6 and [V-SSU1] 17.
[V-SSU1] 17 to disconnect the logical connection with
Prior to instructing the above, the communication mechanisms 14 and 15 are used to notify the [VM1] 6 of the configuration change notice information.

The [VM1] 6 stores this configuration change advance notice information using the unique storage means 12. [VM1] 6
From [RM1] 2 to [RM1] 2, the configuration change notice information [VM
1] The information indicating that 6 has been normally received is transmitted.

This operation will be described with reference to FIG. In FIG. 1, the configuration change advance notice information is transmitted from [RM1] 2 to [RM2] 3 by using the communication mechanisms 14 and 15. The configuration change notice information received by [RM2] 3 is stored in [RM2] by the storage mechanism provided in [RM2].
2] 3, the configuration change advance notice information is stored in the unique storage means 12 and stored.

When the configuration change notice information is normally stored in the unique storage means 12 of [RM2] 3, the configuration change notice information is transmitted from [RM2] 3 which is the destination of the configuration change notice information. Information indicating that the storage of the configuration change notice information has been normally completed is stored in the [RM1] 2 as the communication mechanisms 14 and 15.
Is notified by using.

By doing so, the RM or VM that has received the configuration change notice information can specify the RM or VM that has instructed the configuration change. The configuration change advance notice information may include the following information indicating the state of V-SCMP after the configuration change.

That is, the source RM identifier, the source VM identifier, the source RM or the V-SCM to which the VM belongs.
P identifier, V-SCMP to which the source RM or VM belongs
RM identifier in V, source RM or V to which VM belongs
-Information about the logical connection state between the V-SSU and each RM or VM after the configuration change in SCMP.

(B) Configuration change After the configuration change notice information is normally notified from [RM1] 2 to [VM1] 6, the actual configuration change operation is performed. In FIG. 2, [RM1] 2 is [V-SSU1] 1.
7 activates the configuration control mechanism 19 provided in 7, and the [V-SSU
1] 17 and [VM1] 6 are disconnected.

Referring to FIG. 1, this operation is performed by [R
The M1] 2 operates the configuration control mechanism 9 of the [R-SSU] 1 to disconnect the logical connection between the [R-SSU] 1 and the [RM2] 3. As a result, [V-SSU
1] 17 and [VM1] 6 are logically connected, and [V-
The logical connection between SSU2] 18 and [VM2] 7 is disconnected.

C) Recognition of configuration change [VM1] 6 separated from V-SCMP or [V1]
When the [R-SSU] 1 is accessed from the program running in M2] 7 or the [VMM] 5 itself, an access exception occurs.

Separated from V-SCMP [VM1]
The first time that 6 sees it disconnected from V-SCMP is when its access exception occurs. However, this access exception is not notified to the VM of the access source, which is the direct cause of the access exception, but [V
MM] 5 is notified.

The [VMM] 5 recognizes that the configuration was actually changed due to the occurrence of this access exception.
In addition, this recognition has instructed the configuration change [RM1] 2
However, it is also possible to use the communication mechanisms 14 and 15 together with the mechanism for notifying the completion of execution of the configuration change.

Before or after restoring the logical connection between [R-SSU] 1 and [RM 2] 3 from the disconnected state, [VM
M] 5 refers to the configuration change advance notice information stored in the unique storage means 12. This configuration change advance notice information can include a V-SCMP identifier that is a configuration change target. From the identifier, the VM that is the target of this configuration change
Can be specified.

D) Restoration of real route As a result of the configuration change, the logical connection between [RM1] 2 and [RM2] 3 is cut off, and then the disconnection from V-SCMP is recognized by the occurrence of an access exception. , [VM
M] 5 restores the logical connection between [R-SSU] 1 and [RM2] 3 from the disconnected state.

However, all access from [VM1] 6 or [VM2] 7 to [V-SSU1] 17 or [V-SSU2] 18 is from [VM1] 6 or [VM2] 7 to [V-SSU1] 17. Or, the path to [V-SSU2] 18 is simulated as in use.

(E) Operation of virtual configuration control mechanism of VM Here, [VMM] 5 is [VM 1] 6 and [VM 2] 7
Of the virtual configuration control mechanisms 19 and 20 provided for each VM, the virtual configuration control mechanism 19 of the one provided for the [VM1] 6 whose configuration is to be changed in order to appropriately manage Using [VM1] 6 and [V-SSU
1] The logical connection with 17 is disconnected.

F) Resuming access of VM When the operation of the virtual configuration control mechanism 19 of the [VM1] 6 which is the target of the configuration change is completed, the [VMM] 5 responds to all [VM] 6, 7 The state of using the access route to [V-SSU1] 17 or [V-SSU2] 18 is released.

Then, the [VMM] 5 executes the instruction that causes the access exception that triggers the recognition of the configuration change,
Retry from the VM of the issuer. Of course, if the VM of the issuer is the VM that is the disconnection target due to the current configuration change, an access exception may be simulated with respect to the retry of the instruction.

If the issuing VM is not the disconnection target due to the current configuration change, the VM
Instead, [VMM] 5 may retry the instruction that resulted in the access exception.

After that, the [VM2] 7, which is not the target of the configuration control, normally accesses the [V-SSU2] 18, and the [VM1] 6 which is the target of the configuration control is accessed.
Access to [V-SSU1] 17 from [VMM]
The virtual configuration control mechanism 19 simulated by 5 causes an access exception.

As a result, only the logical connection between [V-SSU1] 17 and [VM1] 6 in [V-SCMP1] is cut off, and the logical connection between [VM2] 7 and [V-SSU2] 18 is changed. The state of not being changed is established. As described above, it is possible to control the configuration change of the logical connection in a certain V-SCMP without affecting the logical connection of another V-SCMP at all.

The above is a description of the case where [RM1] 2 disconnects the logical connection between [VM1] 6 and [V-SSU1] 17. Next, a case where the [RM1] 2 restores the logical connection between the [VM1] 6 and the [V-SSU1] 17 in the disconnected state will be described.

W) Notification of configuration change notice information [RM1] 2 sends [V-SSU1] 17
Prior to instructing to reconnect the logical connection between M1] 6 and [V-SSU1] 17, [VM1]
6 is notified of the configuration change notice information.

Note that this notification can be made using the communication mechanisms 14 and 15. Then, [VM1] 6
Stores this information in the unique storage means 12. And
From [VM1] 6 to [RM1] 2, information indicating the normal reception of the configuration change advance notice information is transmitted.

F) Configuration change After the configuration change notice information is normally notified, the actual configuration change operation is performed. In FIG. 2, [RM1] 2
Activates the configuration control mechanism 19 provided in [V-SSU1] 17 to reconnect the logical connection between [V-SSU1] 17 and [VM1] 6.

This configuration changing operation will be described with reference to FIG. 1. The [RM1] 2 operates the configuration control mechanism 9 provided in the [R-SSU] 1 to logically connect the [R-SSU] 1 and the [RM2] 3. Will reconnect the connection.

By the way, the result of this configuration change is [RM
2] 3 has not been reflected in the virtual configuration control mechanisms 19 and 20 of [VM1] 6 and [VM2] 7. At this point, the logical connection between [V-SSU1] 17 and [VM1] 6 and the logical connection between [V-SSU2] 18 and [VM2] 7 remain disconnected.

(A) Recognition of configuration change Even if the [RM2] 3 is reconnected to the [R-SSU] 1, this change is immediately changed to the [VM1] 6 or [VM2].
7 and [R-SSU] 1 cannot be reflected in the logical connection state.

To reflect it, [VMM] 5 becomes V
Using the virtual configuration control mechanisms 19 and 20 provided for each M, simulation is performed so that only the [VM1] 6 that is logically reconnected is allowed to access the [V-SSU1] 17. Must.

When the configuration change notice information is correctly notified and the configuration change is carried out, the information indicating the implementation is [RM
1] 2 is notified. When an interrupt indicating arrival of the information occurs in [RM2] 3, [VMM] 5 is reconnected to [VM1] 6, for example, [V-SSU1] 17.
Access attempt to the [R-SSU] 1 to which the device belongs and issues a command to know the logical connection state of the actual device.

In this way, the [VMM] 5 becomes [R-
Until it is recognized that the logical connection between SSU] 1 and [RM2] 3 has changed to the connected state, [VM1] 6 or [VM1] 6
2] The virtual configuration control mechanisms 19 and 20 of 7 must not be reconnected.

(A) Configuration control of specific VM Before or after restoring the logical connection between [R-SSU] 1 and [RM2] 3 from the disconnected state, [VMM] 5 refers to the configuration change notice information. .. The configuration change advance notice information can include the identifier of the V-SCMP that is the target of the configuration change.

From the identifier, the VM which is the target of the current configuration change can be specified. By the way, V-SC
The MP has a virtual configuration control mechanism for each VM. This virtual configuration control mechanism is provided for the VMM to appropriately manage each VM.

The [VMM] 5 is connected to the [R-SSU] 1 and the [R-SSU] 1.
After confirming that the logical connection with the M2] 3 is in the reconnection state, the virtual configuration control mechanism 19 of the [VM1] 6, which is the target of the configuration change, is brought into the reconnection state. This restores the disconnected logical connection between [VM1] 6 and [V-SSU1] 17.

(V) Resuming access to VM After the operation of the virtual configuration control mechanism 19 of the [VM1] 6 which is the target of the configuration change is completed, thereafter, access to the [V-SSU1] 17 by this [VM1] 6 is It is done normally.

On the other hand, the access to the [V-SSU2] 18 by the [VM2] 7 which is not the target of the configuration change is performed until the [VM2] 7 and [V-SSU] until the configuration change.
2] If the logical connection with 18 is in the disconnected state, [VM
M] 5 virtual configuration control mechanism 2 simulated by
0 causes an access exception.

As a result, only the logical connection between [V-SSU1] 17 and [VM1] 6 in [V-SCMP1] is restored, and [VM2] in [V-SCMP2].
The state that the logical connection between 7 and [V-SSU2] 18 is not changed is established. Therefore, one V-SCM
It can be controlled so that the logical configuration change in P does not affect other V-SCMP.

(B) Reconnection of virtual route when the actual route is logically connected As described above, by the simulation by the virtual configuration control mechanism provided for each VM, [V-SCMP
1], only the logical connection between [V-SSU1] 17 and [VM1] 6 is disconnected, and [VM2] 7 and [V-SS
The state that the logical connection with U2] 18 is not changed is established.

At this time, [R-SSU] 1 and [RM2]
The actual route connecting 3 and 3 is in the connected state. After that, for example, when [RM1] 2 instructs reconnection of the separated logical connection, the actual route connecting [RM2] 3 and [R-SSU] 1 has already been restored by [VMM] 5. ..

By the way, the [VMM] 5 cannot know that the reconnection is performed by itself. Therefore, [VM] 6,7 belonging to [RM2] 3 and [R-S
When the logical connection with the [V-SSU] s 17 and 18 belonging to the SU] 1 is restored, it is necessary to inform the [VMM] 5 that the configuration change has been made.

As means for this, for example, [RM
1] 2 notifies the configuration change notice information to [VM1] 6, and after the process for incorporating [VM1] 6 into the configuration is completed, the communication means such as the system signal processor mechanism is used to [VM1]. ] The completion of the reconnection process of 6 may be notified.

[0098]

FIG. 3 is a diagram showing a first embodiment of the present invention. In FIG. 3, [RM1] 31, [RM2] 32,
And [RM3] 33 are connected to each other by general-purpose communication mechanisms 37 to 39. Each of the RMs 31 to 33 is provided with unique storage means 40 to 42 such as a main storage device and an expansion storage device.

Furthermore, [VMM] 3 is stored in [RM2] 32.
4 is placed under the control of this [VMM] 34 [VM1]
35 and [VM2] 36 are constructed. In addition, [V
M1] 35 constitutes [VM1] 31 and [V-SCMP1], and [VM2] 36 is [RM3] 33 and [VS].
CMP2].

Needless to say, the [R-SSU] 30 is
[V-SSU1] configuring [V-SCMP1],
It is logically divided into [V-SSU2] which constitutes [V-SCMP2].

When the general-purpose communication mechanisms 37 to 39 described above receive information from a certain [RM] 31 to 33 or [VM] 35, 36 to another [RM] 31 to 33 or [VM] 35, 36. This arrival is interrupted by [V
The MM] 34 or [RM2] 32 operating system (hereinafter referred to as OS) is notified.

Now, in [V-SCMP1], [RM
1] 31 disconnects the logical connection between [VM1] 35 and [V-SSU1], and changes the configuration. At this time, first, the [RM1] 31 transmits the configuration change notice information to the [RM2] 32 using the general-purpose communication mechanisms 37 and 38. The general-purpose communication mechanism 38 of the [RM2] 32, which has received the configuration change notice information, interrupts the [VMM] 34.

When the [VMM] 34 receives an interrupt, it refers to a predetermined storage position of a predetermined storage means from the interrupt code and the detailed interrupt information. The [VMM] 34 analyzes the content and confirms that the [RM2] 32 has normally received the configuration change advance notice information.

When the configuration change notice information is normally notified to the [RM2] 32, the [VMM] 34 uses the general-purpose communication mechanisms 37 and 38 to transmit the configuration change notice information [RM1] 31. Is notified of the receipt of the configuration change notice information. For information on receiving configuration change notice information, see [RM
2] 32 propagates from the [VMM] 34 to the general-purpose communication mechanism 37 of the [RM1] 31 and causes an interrupt to the OS of the [RM1] 31.

The OS of [RM1] 31 notifies the task that is going to perform the configuration control that an interrupt has occurred.
The task is triggered by this interrupt, and [R-SSU] 30
And an instruction to change the logical connection between the [RM-SSU] 32 and the [RM2] 32 is issued to the [R-SSU] 30. [RS
[SU] 30 follows [R-SS
Change the logical connection between U] 30 and [RM2] 32.

If the configuration change instruction is a path disconnection instruction, as described in the operation section of this specification, [RM
2] 32 [VMM] 34 belongs to any [VMM]
When the M] 35 and 36 access the [R-SSU] 30, the generation of an access exception is known. As a result of this, the [VMM] 34 and the [R-SSU] 30 and the [RM
2] Restore the route to 32.

The [VMM] 34 simultaneously refers to the configuration change notice information and appropriately sets the virtual configuration control mechanism prepared for each [VM] 35, 36. After that, each [VM] 3
Access to [R-SSU] 30 from 5 and 36 is restarted.

FIG. 4 is a diagram showing a second embodiment of the present invention. In the second embodiment, not the general-purpose communication mechanism but the system signal processor (hereinafter referred to as SSIGP) is used as the notification means of the configuration change notice information and the configuration change end information.
Mechanisms 57-59 are used.

The SSIGP mechanism is independent of the general-purpose communication mechanism, has a dedicated communication path, and is a mechanism for enabling communication between arbitrary RMs. The SSIGP mechanism has the parameter of the SSIGP instruction that drives the SSIGP mechanism in its main memory.

The SSIGP mechanism transfers this parameter to the CPU of the communication destination RM. By generating an interrupt according to the purpose of communication, various communication processes are possible. In the second embodiment, the configuration change notice information is included in the parameter transmitted to the communication destination RM by the execution of the SSIGP instruction.

In FIG. 4, [RM1] 51 is [VM1].
1] 55, and disconnects the logical connection between [V-SSU1],
Suppose you want to change the configuration. At this time, first, [RM
1] 51 uses the SSIGP mechanisms 57, 58 to notify the [RM2] 52 of configuration change notice information. The SSIGP mechanism 58 of [RM2] 52 that received the configuration change notice information
Interrupts the [VMM] 54.

When the [VMM] 54 receives the interruption, it reads the received configuration change notice information from the unique storage means 61, so that the [RM2] 52 has normally received and stored the configuration change notice information. To confirm. The unique storage means 60 to 62 are provided for each of the RMs 51 to 53.

When the configuration change notice information is normally notified to the [RM2] 52, the [VMM] 54 is set to SSIGP.
Using the mechanisms 57 and 58, [RM1] 51, which is the sender of the configuration change advance notice information, is notified of the acceptance of the configuration change advance notice information. By this notification, the SSIGP mechanism 57
Interrupts the OS of [RM1] 51.

Here, the SSIGP mechanism 57 reflects in the condition code of the SSIGP instruction that the configuration change notice information is correctly notified to the [RM2] 52. SS
In the case where the condition code of the IGP instruction indicates that the notification of the configuration change advance notice is normally completed, the program for changing the configuration immediately implements the configuration change, thereby enabling a series of higher-speed configuration change operations. Become.

When an instruction to change the logical connection between [R-SSU] 50 and [RM2] 52 is issued to [R-SSU] 50 upon the interruption of SSIGP mechanism 57, The [R-SSU] 50 disconnects the logical connection between the [R-SSU] 50 and the [RM2] 52 according to the instruction to change the configuration, and changes the V-SCMP configuration.

After changing the configuration, [VM2] 52 [VM
M] 54 is [R-SSU] 50 when [VM] 55 and 56 are
Know when an access exception occurs when you access. As a result of this, the [VMM] 54 changes the [R-SSU]
The path between 50 and [RM2] 52 is restored.

The [VMM] 54 simultaneously refers to the configuration change notice information, and appropriately sets the virtual configuration control mechanism provided in each [VM] 55, 56. After that, [VM1] 5
5 and [VM2] 56 to access [R-SSU] 50 again.

FIG. 5 is a diagram showing a third embodiment of the present invention. In the third embodiment, as in the second embodiment, as means for notifying the configuration change notice information and the configuration change end information,
The SSIGP mechanism 77-79 is used.

In FIG. 5, [RM1] 71 is [VM
1] Disconnect the logical connection between 75 and [V-SSU1],
Suppose you want to change the configuration. At this time, first, [RM
1] 71, the configuration change notice information, [R-SSU] 70
Store it in a predetermined area of '.

Next, the [RM1] 71 uses the SSIGP mechanism 77, 78 to the [RM2] 72 and outputs [R-
SSU] 70 is notified that the configuration change notice information is stored. [RM2] 72 who received the configuration change notice information
The SSIGP mechanism 78 of [VMM] 74 interrupts the [VMM] 74.

[VMM] 74 receives the interrupt,
The configuration change notice information in [R-SSU] 70 is stored in the unique storage unit 81. The unique storage means 80-8
2 is provided for each RM 71-73.

When the [RM2] 72 normally obtains the configuration change notice information, the [VMM] 74 sends the SSIGP mechanism 7
7, 78 is used to notify [RM1] 71 of acceptance of the configuration change advance notice information. By this notification, SS
The IGP mechanism 77 interrupts the OS of [RM1] 71.

Here, the SSIGP mechanism 77 reflects in the condition code of the SSIGP instruction that the configuration change notice information has been correctly notified to the [RM2] 72. SS
Upon the interruption by the IGP mechanism 77, an instruction to change the logical connection is issued to the [R-SSU] 70.

The [R-SSU] 70 disconnects the logical connection between the [R-SSU] 70 and the [RM2] 72 in accordance with the above-mentioned configuration change instruction, and changes the V-SCMP configuration. After changing the configuration, the [VMM] 74 is replaced with the [VM1] 75 or the [VMM] 74.
When the M2] 76 accesses the [R-SSU] 70, the generation of the access exception is known. With this as an opportunity,
The [VMM] 74 restores the route between the disconnected [R-SSU] 70 and [RM2] 72.

The [VMM] 74 simultaneously refers to the configuration change notice information, and appropriately sets the virtual configuration control mechanism provided in the [VM1] 75 and the [VM2] 76. After that, from [VM1] 75 and [VM2] 76 to [R-SS
U] 70 access is resumed.

FIG. 6 is a diagram showing a fourth embodiment of the present invention. In FIG. 6, [RM1] 91 is replaced with [VM1] 95.
And [V-SSU1] are disconnected, and the configuration is changed. At this time, first, [RM1] 91
Stores the configuration change notice information in a predetermined area of the shared storage means 103 different from the [R-SSU] 90 '.

Next, the [RM1] 91 uses the SSIGP mechanisms 97 and 98 to notify the [RM2] 92 that the shared storage means 103 has stored the configuration change advance notice information. The SSIGP mechanism 98 of the [RM2] 92, which has received the configuration change notice information, interrupts the [VMM] 94.

[VMM] 94 receives the interrupt,
The configuration change notice information stored in the shared storage unit 103 is stored in the unique storage unit 101. Each of the RMs 91 to 93 has a unique storage unit 100 to 102 and an SSIGP mechanism 97 to 99.
It is equipped with.

When the [RM2] 92 normally obtains the configuration change notice information, the [VMM] 94 sends the SSIGP mechanism 9
7, 98 is used to notify [RM1] 91 of acceptance of the configuration change advance notice information. By this notification, SS
The IGP mechanism 97 interrupts the OS of [RM1] 91.

Here, the SSIGP mechanism 97 reflects in the condition code of the SSIGP instruction that the configuration change notice information is correctly notified to the [RM2] 92. SS
Upon the interruption by the IGP mechanism 97, an instruction to change the logical connection is issued to the [R-SSU] 90.

The [R-SSU] 90 disconnects the logical connection between the [R-SSU] 90 and the [RM2] 92 according to the instruction to change the configuration, and changes the configuration. After changing the configuration,
The [VMM] 94 is the [VM1] 95 or the [VM2] 96.
Knows the occurrence of an access exception when accessing [R-SSU] 90. With this, [VMM] 9
4 restores the route between [R-SSU] 90 and [RM2] 92.

The [VMM] 94 simultaneously refers to the configuration change notice information, and appropriately sets the virtual configuration control mechanism provided in the [VM1] 95 and the [VM2] 96. After that, from [VM1] 95 and [VM2] 96 to [R-SS
U] 90 access is resumed.

FIG. 7 is a diagram showing a fifth embodiment of the present invention. In the fifth embodiment, when notifying the configuration change notice information and the configuration change end information, or when notifying the storage completion of the information, the general-purpose communication means or the SSIGP mechanism interrupts the configuration change target. Does not cause

In this embodiment, the constituent elements of each V-SCMP refer to the shared storage area provided in the [R-SSU] 110 at regular intervals. Then, when the configuration change notice information addressed to itself is stored in the shared storage area, it is copied to the unique storage means 120 to 122.
Each [RM] 111-113 has its own storage means 120-1.
22.

After copying, the configuration change notice information reception flag corresponding to the individual configuration change notice information prepared in advance in the shared storage area indicates the completion of reception of the configuration change notice information. The component of V-SCMP, which is the transmission source, knows that the reception destination has received the configuration change notice information by referring to the reception flag.

Here, [RM1] 111 is [R-SS
U] 110 is instructed to change the configuration. [R-SS
U] 110 follows [R-SSU] 110 according to the change instruction.
And [RM2] 112 are disconnected from the logical connection, and the configuration is changed. After changing the configuration, the [VMM] 114
1] 115 or [VM2] 116 is [R-SSU] 11.
Know the occurrence of an access exception when accessing 0.

At this point, the [VMM] 114 sets the [R
Restore the path between SSU] 110 and [RM2] 112. The [VMM] 114 simultaneously refers to the configuration change notice information and appropriately sets each virtual configuration control mechanism provided in the [VM1] 115 and the [VM2] 116.

FIG. 8 is a diagram showing a sixth embodiment of the present invention. In the sixth embodiment, as in the fourth embodiment, the shared storage means 143 is provided. However, the configuration change notice information and the configuration change end information can be stored not only in the shared storage unit 143 but also in the [R-SSU] 130.

In this case, the component of V-SCMP copies the configuration change notice information or the configuration change end information to its own unique storage means. Then SSIG
Using the P mechanism, an interruption is caused to the constituent element which is the source, and the completion of receiving the configuration change notice information is notified.

In FIG. 8, [RM1] 131 is [VM
1] 135 and the logical connection between [V-SSU1] are disconnected, and the configuration is changed. At this time, first, [R
M1] 131 sends the configuration change notice information to [R-SSU].
The data is stored in a predetermined area of 130. Each V-SCMP component refers to the shared storage area in [R-SSU] 130 at regular intervals.

When the configuration change notice information destined for itself is stored in the shared storage area, it is copied to the unique storage means 140-142. In addition, each R
M131-133 are specific storage means 140-142,
The SSIGP mechanism 137-139 is provided.

When the [RM2] 132 normally obtains the configuration change advance notice information, the [VMM] 134 uses the SSIGP mechanisms 137 and 138 to inform the [RM1] 131:
Notify that the configuration change notice information has been received. By this notification, the SSIGP mechanism 137 causes the OS of the [RM1] 131 to operate.
Interrupt to.

In response to the interrupt by the SSIGP mechanism 137, an instruction to change the logical connection is given by [RS
SU] 130. [R-SSU] 1
30 follows [R-SSU] 1 according to the instruction of the configuration change.
30 to disconnect the logical connection between [RM2] 132 and V-
Change the SCMP configuration.

After changing the configuration, the [VMM] 134 is set to [VMM].
1] 135 or [VM2] 136 is [R-SSU] 13.
Know the occurrence of an access exception when accessing 0. In response to this, the [VMM] 134 changes the [R-SS
The path between U] 130 and [RM2] 132 is restored.

[VMM] 134 simultaneously refers to the configuration change notice information, and [VM1] 135 and [VM2] 13
The virtual configuration control mechanism provided in 6 is properly set.
After that, access from the [VM1] 135 and the [VM2] 136 to the [R-SSU] 130 is restarted.

FIG. 9 is a diagram showing a seventh embodiment of the present invention. The seventh example is an example in the case of reconnecting the logical connection between the disconnected [VM1] 155 and [V-SSU1]. In FIG. 9, first, [RM1]
The 151 notifies the [RM2] 152 of the configuration change notice information by using the SSIGP mechanisms 157 and 158.

[RM2] 1 which has received the configuration change notice information
The SSIGP mechanism 158 at 52 interrupts the [VMM] 154. When the [VMM] 154 receives the interrupt, it stores the received configuration change notice information in the unique storage means 161. Each [RM] 151-153 is
SSIGP mechanisms 157-159 and unique storage means 16
It has 0 to 162.

[VMM] 154 is the SSIGP mechanism 15
7, 158 is used to notify [RM1] 151, which is the sender of the configuration change advance notice information, that the configuration change advance notice information has been received. By this notification, the SSIGP mechanism 157
Interrupts the OS of [RM1] 151,
This is reflected in the condition code of the SSIGP instruction.

When the [RM2] 152 normally receives the configuration change notice information, the SS in the [RM1] 151
"0" is reported as the condition code of the IGP instruction.
The [RM1] 151 analyzes this condition code and makes a configuration change as described below.

Upon the interruption by the SSIGP mechanism 157, the instruction to restore the logical connection between [R-SSU] 150 and [RM2] 152 is [R-SSU] 150.
Issued to. [R-SSU] 150 follows [R-SSU] 150 and [RM
2] Restore the logical connection with 152 and change the configuration of V-SCMP.

After changing the configuration, the [RM1] 151 becomes
2] 152 is notified of the completion of the configuration change. In response to this notification, the [VMM] 154 refers to the configuration change notice information and [VM1] 155 and [VM2] 156.
The virtual configuration control mechanism provided in is properly set.

[0152]

As described above, according to the present invention,
It is possible to build multiple independent virtual complex information processing systems including multiple virtual computers, realize a development environment for large-scale complex information processing systems, and reduce required equipment. Produce an effect.

[Brief description of drawings]

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

FIG. 2 is a second diagram illustrating the principle of the present invention.

FIG. 3 is a diagram showing a first embodiment of the present invention.

FIG. 4 is a diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing a third embodiment of the present invention.

FIG. 6 is a diagram showing a fourth embodiment of the present invention.

FIG. 7 is a diagram showing a fifth embodiment of the present invention.

FIG. 8 is a diagram showing a sixth embodiment of the present invention.

FIG. 9 is a diagram showing a seventh embodiment of the present invention.

FIG. 10 is a diagram showing a conventional technique.

FIG. 11 is a diagram showing a conventional technique.

FIG. 12 is a diagram showing a conventional technique.

FIG. 13 is a diagram showing a conventional technique.

FIG. 14 is a diagram showing a conventional technique.

[Explanation of symbols]

1, 30, 50, 70, 90, 110, 130, 15
0,201 real storage device 2-4, 31-33, 51-53, 71-73, 91-
93, 111-113, 131-133, 151-15
3,202-204 Real computer 5,34,54,74,94,114,134,15
4,211 Virtual machine monitor 6,7,35,36,55,56,75,76,95,
96, 115, 116, 135, 136, 155, 15
6,209,210 Virtual machine 8-10 Logical structure control mechanism 11-13,40-42,60-62,80-82,1
00-102, 120-122, 140-142, 16
0-162 unique storage means 14-16 communication mechanism 17, 18, 207, 208 virtual storage device 19, 20 virtual configuration control mechanism 37-39 general-purpose communication mechanism 57-59, 77-79, 97-99, 137-13
9,157-159 system signal processor mechanism 103,143 shared storage means 200 real composite information processing system 205,206 virtual composite information processing system

Claims (8)

[Claims] 1. A plurality of real computers that perform information processing, and a real shared storage device shared by the plurality of real computers,
By having a communication means that connects real computers, and by sharing information and communicating information, it is possible to perform collaborative processing by multiple real computers, and at least one real computer is at least one virtual computer. And a virtual machine monitor that manages the virtual machine, the real shared storage device has at least one virtual shared storage device, and connects the virtual computer and the real computer, and the virtual computer and the virtual computer. By providing a communication means for connecting to a computer, it is possible to perform cooperative processing by multiple real computers and virtual computers. When performing cooperative processing by multiple real computers and virtual computers, the real computer and virtual computer are appropriate. By dividing into a plurality of different information processing systems having one or more real computers and virtual computers. Different cooperative processing can be performed, and one information processing system having the one or more real computers and virtual computers is provided with means for changing the logical connection state of any real computer or virtual computer, You can flexibly change its configuration,
In a complex information processing system including at least one virtual machine, prior to changing the configuration of the real machine or the virtual machine, from the real machine whose configuration is to be changed, or the real machine to which the virtual machine which is going to change the configuration belongs, Notify the real computer whose logical connection is to be changed or the real computer to which the virtual computer whose logical connection is to be changed belongs to at least the configuration change notice information including at least the information for identifying the sender of the configuration change instruction. Means that the configuration change notice information is normally notified to the real computer to which the logical connection state is changed or the virtual computer to which the logical connection state is changed belongs. Or, the condition that the configuration change notice information is normally notified is satisfied, that is, the actual computer that is going to change the configuration, or After being confirmed by the real machine the virtual machine belongs to try to change the formation,
And a means for changing the configuration. 2. A real storage unit for holding the configuration change notice information is provided for each real computer or virtual computer, and a virtual computer is built on the real computer separated from the composite information processing system by the configuration change. In this case, after the disconnection, the access to the virtual shared storage device by any virtual computer belonging to the detached real computer is recognized as an exception, and is held in the specific storage means. Before or after the change notice information is referred to, the logical connection between the real computer to which the virtual computer belongs and the real shared storage device is restored by the control of the virtual computer monitor, and thereafter the virtual computer monitor executes Control the logical connection information of each complex information processing system to which each virtual machine under the control of
2. The configuration control method according to claim 1, wherein the logical configuration control of the composite information processing system is performed by simulating the behavior of the virtual shared storage device. 3. A general communication mechanism such as a channel is provided between real computers when notifying interrupt control information indicating arrival of configuration change notice information to a real computer whose logical connection state is to be changed. A real computer that is connected via a communication path and to which a configuration change instruction or a virtual computer that issues a configuration change instruction belongs is disconnected from the composite information processing system or reconnected to the composite information processing system using the communication path. To the real computer to notify the configuration change notice information in advance prior to the configuration change, and the real computer to be disconnected or reconnected retains the notified configuration change notice information in the unique storage means. 3. When the interrupt indicating the arrival of the configuration change notice information is received, the arrival of the configuration change notice information is recognized upon the interruption. A composite information processing system comprising a configuration control mechanism according to the configuration control method of 1. 4. A mechanism for providing a system signal processor instruction in the case of notifying interrupt control information indicating arrival of configuration change notice information to a real computer whose logical connection state is to be changed, and A composite information processing system comprising a configuration control mechanism according to the configuration control method according to claim 1 or 2, wherein a sub-instruction code for indicating arrival of configuration change notice information is added to the system signal processor instruction. 5. A real computer for instructing a configuration change or an instruction for a configuration change when notifying interrupt control information indicating arrival of configuration change advance information to a real computer whose logical connection state is to be changed. The real computer to which the virtual machine belongs stores the configuration change notice information in advance in the shared storage area provided on the actual shared storage device prior to the configuration change, and adds the sub instruction code to the mechanism for the system signal processor instruction. By doing so, the fact that the configuration change notice information has been stored in the shared storage area is transmitted from the configuration-changing real computer to the configuration-changing real computer, and the configuration-changing side computer The real computer generates an interrupt when the storage of the configuration change notice information is completed, and the virtual computer monitor is triggered by this interrupt, and the virtual computer monitor 5. The composite information processing system according to claim 4, wherein the composite information processing system is reconnected to the real shared storage device to recognize the configuration change notice information stored on the real shared storage device. 6. When notifying a real computer, which is a logical connection state change target, of interrupt control information indicating arrival of configuration change advance notice information, other than a shared storage area provided on a real shared storage device, For example, the configuration change notice information is stored in advance in the shared storage means such as the shared DASD or the like prior to the configuration change, and a sub-instruction code is added to the mechanism for the system signal processor instruction to change the configuration to the shared storage means. Information indicating the completion of the storage of the advance notice information is propagated from the sending side real computer to the receiving side real computer, which causes the receiving side real computer to generate an interrupt. Before recognizing that the information is stored in the shared storage means, the virtual computer monitor belonging to the receiving-side real computer is stored in the shared storage means. The composite information processing system according to claim 4, wherein the real computer to which the user belongs is reconnected to the real shared storage device as necessary by recognizing the configuration change notice information. 7. A real computer for changing the configuration or a virtual computer for changing the configuration when notifying interrupt control information indicating arrival of the configuration change notice information to a real computer whose logical connection state is to be changed. The real computer to which is stored pre-stores the configuration change notice information in the shared storage area provided on the real shared storage device, and each real computer and virtual computer refers to the area at regular time intervals to make the configuration change notice. The real computer or virtual computer designated as the destination of the information reads the configuration change notice information and writes it in the unique storage means of its own,
And, in the shared storage area, recording information indicating that the configuration change notice information is recognized, on the other hand, a real computer or a virtual computer which is going to change the configuration, at the time of referring to the shared storage area, The recognition of the configuration change notice information by the real computer or the virtual computer whose configuration is changed is detected, and the configuration change is triggered by this, and the virtual computer monitor belonging to the real computer whose configuration is changed is stored in the unique storage means. By recognizing the configuration change notice information
A composite information processing system comprising a configuration control mechanism according to the configuration control method according to claim 2, which reconnects a real computer to which it belongs to a real shared storage device as needed. 8. A real computer whose configuration is changed from a real computer whose configuration is to be changed or a real computer to which the virtual computer whose configuration is to be changed belongs when restoring a disconnected virtual connection path. , Or, to the real computer to which the virtual machine whose configuration is to be changed belongs, notify the configuration change notice information in advance,
The real computer or virtual computer whose configuration is to be changed is
After the notification of the configuration change notice information is confirmed, the configuration change that conforms to the announced configuration is made, and the real computer to which the configuration change was targeted or the real computer to which the virtual computer belongs is notified of the configuration change notice information. 2. The disconnected logical connection is restored by a virtual configuration control mechanism that controls the logical connection between the virtual computer managed by the virtual computer monitor and the virtual shared storage device belonging to the real shared storage device upon the occasion of 8. The composite information processing system according to claim 3, further comprising a configuration control mechanism according to the configuration control method according to claim 3.