JPH05113894A - File resource managing system in virtual computer system - Google Patents

Abstract

PURPOSE:To perform the management of the same resource of a real volume device including even the nonexclusive control of a file by plural virtual computers and to efficiently execute shared resource control. CONSTITUTION:The virtual computers (alpha), (beta) are provided with virtual storage managing functions by a segmentation system, and are operated under the control of the same kind of operating systems 2, 3. A real volume device 6 can be shared with the virtual computers (alpha), (BETA), and is connected to a real computer system. A file managing part 5 performs the assignment management of file resource of the real volume device 6 by performing file exclusive control relating to the assignment request of the file resources for the real volume device 6 outputted from the jobs of the operating systems 2, 3, and also, performs the release management of the file resource for the release request of the file resource. The file managing part 5 is shared with the virtual computers (alpha), (beta) by installing in a system shared address space 7 by the virtual storage managing function of the virtual computers (alpha), (beta).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file resource management system in a virtual computer system.

[0002]

2. Description of the Related Art A file resource management method in a conventional virtual computer system will be described with reference to FIG.

A conventional virtual computer system is an operating system for the first and second virtual computers (hereinafter referred to as "operating system").
Guest OSes 310 and 320, real computers 330, virtual computer monitors (hereinafter abbreviated as VM monitors) 340, and first and second real volume devices 360 and 370.

The first and second guest OSs 310 and 320 are connected to the VM monitor 340. The VM monitor 340 is connected to the real computer 330. The real computer 330 is connected to the first and second real volume devices 360 and 370. Each of the first and second real volume devices 360 and 370 is, for example, a magnetic disk device.

The first guest OS 310 has a job 311
And 312, the resource allocation release control unit 313, the file exclusion control unit 314, and the file management table 315.
And a volume device recognition unit 316. Similarly, the second guest OS 320 executes the jobs 321 and 3
22, a resource allocation release control unit 323, a file exclusion control unit 324, a file management table 325, and a volume device recognition unit 326.

The VM monitor 340 has a resource allocation release control unit 341 and a real volume device recognition unit 342.

The VM monitor 340 allocates the first real volume device 360 to the first guest OS 310 and the second real volume device 370 to the second guest OS 320 in advance. Resource management for allocating or releasing file resources is performed for physical files in the first real volume device 360 shared by the jobs 311 and 312 operating in the first guest OS 310. Similarly, resource management for exclusive allocation or release of file resources is performed for physical files in the second real volume device 370 shared by the jobs 321 and 322 of the second guest OS 320.

[0008]

Therefore, in the conventional virtual computer system, the first and second real volume devices 360 and 370 are required to perform exclusive control of files from the second and first guest OSs 320 and 310, respectively. There was a drawback that it could not be shared, including.

Therefore, an object of the present invention is to solve such a drawback of the prior art and to manage the resources by sharing the same real volume device resource among a plurality of virtual computers including even exclusive control of files. Another object of the present invention is to provide a file resource management method capable of efficiently executing the shared resource control.

[0010]

A file resource management system in a virtual computer system according to the present invention has a virtual memory management function by a segmentation system, and a plurality of virtual systems each operating under the control of a plurality of operating systems of the same type. A plurality of operating systems in a virtual computer system including a computer and a real volume device that can be shared by the plurality of virtual computers and is connected to the real computer system, and that operates the plurality of virtual computers on the real computer system; File exclusion control relating to a file resource allocation request to the real volume device issued from a system job is performed to manage the file resource allocation of the real volume device, and at the same time, release management of the file resource to the file resource release request is performed. File management department By the virtual memory management function in each operating system of the plurality of virtual machines, it is shared by the plurality of virtual machines in the system shared address space, and the allocation of file resources from the plurality of virtual machines to the real volume device is released. The feature is that requests are centrally managed including file exclusion control.

[0011]

In the file resource management method in the virtual computer system according to the present invention, the real volume device is controlled by performing the file exclusion control related to the allocation request of the file resource management for the real volume device issued from the jobs of the plurality of operating systems. The file resource management unit, which manages the allocation of the file resources of the above and manages the release of the file resources in response to the request to release the file resources, is placed in the system shared address space and shared by each operating system. Control, file resource allocation, or release processing,
Recognition processing of the real volume device is performed.

[0012]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing a virtual computer system to which a file resource management system according to an embodiment of the present invention is applied. In FIG. 1, a virtual computer system 1
Is shared by the first and second virtual computers α and β having a segmentation-type virtual memory management function and the first and second virtual computers α and β, and is connected to a real computer system (not shown). And a real volume device 6.

First and second virtual machines α and β
Respectively include the same type of first and second operating systems 2 and 3, respectively. Further, as shown in FIG. 1, the file resource management unit 5 is placed in the system shared address space 7. The file resource management unit 5 uses the virtual storage management function sharing unit 4 to execute the first virtual computer α.
And the second virtual computer β can be shared.

The file resource management unit 5 comprises a resource allocation release control means 50, a file management table 51, a file exclusion control means 52 and a real volume device recognition means 53.

In this embodiment, the number of virtual machines (that is, operating systems) operating on the virtual machine system 1 is two, but three or more virtual machines are realized on the same real computer system. The present invention can also be applied to a computer system.

In this embodiment, the virtual memory management function sharing means 4 uses a segmentation method so that the file resource management unit 5 can be shared by the first and second operating systems 2 and 3 on the virtual computer system 1. The first and second operating systems 2
The file resource management unit 5 is positioned on the system shared address space 7 of 3 and 3. That is, the resource allocation release control means, the real volume device recognition means, the file exclusion control means and the file management table address space created by the first operating system 2 and the resource allocation release created by the second operating system 3. By making the control means, the real volume device recognition means, the file exclusion control means, and the address space of the file management table the same, the file resource management unit 5 in the first and second operating systems 2 and 3
Can be shared.

Such a sharable file resource management unit 5 requests the real volume device 6 to release the file resource allocation request 20 from the first operating system 2.
Alternatively, a file resource allocation release request 30 from the second operating system 3 is accepted, file resource allocation or release processing is performed including the file exclusion control, and the result is sent to the first and second file resource allocation release request sources. Notify the second operating system 2 or 3.

FIG. 2 shows an example of the structure of the file management table 51. The file management table 51 manages a real file name corresponding to each sharable real volume device 6, a file exclusion control queue, and control information including various kinds of information necessary for file exclusion control. The release control means 50, the file exclusion control means 52, and the real volume device recognition means 53 refer to and update.

Next, the operation of this embodiment will be described with reference to FIGS.

In FIG. 1, resource allocation release control means 5
When 0 receives a file resource allocation release request 20 for the real volume device 6 from the first operating system 2, if the request is a file resource exclusive allocation request, the real resource device in the resource request table specified at the time of the request. The corresponding file management entry in the file management table 51 is obtained from the file name, and based on the control information of the entry, it is checked whether or not the real volume device 6 is a device that can be shared by the first operating system 2. If it is not sharable, it is processed as an error, but in the present example, it is sharable, and therefore the corresponding management entry is passed to the file exclusion control means 52 together with the control.

The file exclusion control means 52 connects the file resource allocation release request 20 in the FIFO order (first in first out method) at the end of the file exclusion control queue of the corresponding file management entry. If the file requested by the control information of the corresponding file management entry is not assigned to any job, the currently assigned indicator is attached and the job identification name of the request source (in this example, the job of the file resource allocation release request 20 (Identification name) is registered, and the file management entry is returned to the resource allocation release control means 50 together with control.

The resource allocation release control means 50 notifies the allocation result to the job of the file resource allocation release request 20 of the requesting first operating system 2.

When a file resource release request 20 is issued from the first operating system 2 to the real volume device 6 with a file resource release request 20, the resource allocation release control means 50 causes the real resource in the resource request table specified at the time of request. When the corresponding file management entry in the file management table 51 is obtained from the file name and the job identification name in the control information and the identification name of the requested job match, the assigned indicator is erased, the job identification name area is reset, and the file exclusion The file resource allocation release request 20 is removed from the head of the control queue. Then, if there is no request waiting in the file exclusion control queue, the result is returned to the request source together with the control. In the present example, since there is the file resource allocation release request 30, the corresponding file management entry is passed to the file exclusion control means 52 together with the control.

In the above description, an example in which the file resource allocation release request 20 for the real volume device 6 is received from the first operating system 2 has been described. However, the file resource for the real volume device 6 from the second operating system 3 is explained. Quota release request 3
The operation when 0 is accepted is similar.

The real volume device 6 is shared and used by the plurality of virtual computers α and β while the file exclusion control is performed by continuing the above-described operation.

The real volume device recognition means 53 is
When the real volume device 6 becomes available, the volume serial number and the real file name are recognized, and the file management entry of the file management table 51 is made.

FIG. 3 is an explanatory diagram of the virtual memory management function sharing means 4 which is the sharing means of the file resource management unit 5 placed in the system shared address space.

In FIG. 3, (J _i , P _i ) attached to the processes A and B of the first virtual computer α and the processes X and Y of the second virtual computer β are identification names of the process i. S
TWA-i is a segment table display word string. STNi is the segment table number i. ST-i is a segment table. STEi is the segment table description item number i.
A-1, B-1, X-1, and Y-1 are unique segments of the processes A, B, X, and Y, respectively. AB-1, X
Y-1 is process A, process B, and process X, respectively
And a shared segment of process Y. S-1 is a system (all processes) shared segment. In the system sharing segment S-1, the file resource management unit 5 of FIG.
A program or the like for realizing is stored. Incidentally, C in the segment table ST-i represents the attribute of the segment linked to the segment table, C = 00 is a process-specific segment, C = 01 is a process group shared segment, and C is a segment.
= 11 represents a system shared segment.

In FIG. 3, the processes A and B of the first virtual computer α make a file resource allocation release request using the file resource management unit 5 existing in the system shared segment S-1. Therefore, the system shared segment S-1 is linked from the n-th entry of the segment table ST-S, and this segment table ST-S is further linked to the segment table display word string STWA-A by the process A. It is linked from the kth entry. The n-th entry is defined as a system shared segment as a segment attribute. Similarly, for the process B, the segment table ST-S is linked to the kth entry of the segment table display word string STWA-B (the same value as k of the segment table display word string STWA-A) linked to the process B. Has been done.

On the other hand, the processes X and Y of the second virtual computer β can also access the segment S-1 in order to use the same file resource management unit 5 as the processes A and B of the first virtual computer α. , K of the segment table display word string STWA-X linked to the process X
The segment table ST-S is linked to the (the same value as k of the segment table display word string STWA-A) entry. Similarly, for the process Y, the segment table ST-S is added to the k-th entry (the same value as k of the segment table display word string STWA-A) of the segment table meaning word string STWA-Y linked to the process Y. It is linked.

[0032]

As described above, according to the present invention,
By placing the file resource management unit in the system shared address space and sharing it with the operating systems of multiple virtual machines, file exclusion control, allocation or release processing of file resources, and real volume control for real volume devices shared by multiple virtual machines are performed. Volume device recognition processing and the like can be performed in one stage, and the same real volume device resource can be shared by a plurality of virtual computers including file exclusion control.

[Brief description of drawings]

FIG. 1 is a block diagram showing a virtual computer system to which a file resource management system according to an embodiment of the present invention is applied.

FIG. 2 is a diagram showing a configuration example of a file management table in FIG.

FIG. 3 is a diagram for explaining the operation of a virtual memory management function sharing means in FIG.

FIG. 4 is a block diagram showing a virtual computer system to which a conventional file resource management method is applied.

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 1 virtual computer system 2 first operating system of first virtual computer α 3 second operating system of second virtual computer β 4 virtual memory management function sharing means 5 file resource management unit 6 sharable real volume device 7 System shared address space 20, 30 File resource allocation release request 50 Resource allocation release control means 51 File management table 52 File exclusive control means 53 Real volume device recognition means

Claims (3)

[Claims] 1. A plurality of virtual computers each having a virtual memory management function based on a segmentation method and operating under the control of a plurality of operating systems of the same type, and a virtual computer that can be shared by the plurality of virtual computers to form a real computer system. In a virtual computer system including a connected real volume device and operating the plurality of virtual computers on the real computer system, a file management unit that manages file resources of the real volume device is provided in the plurality of virtual computers. By the virtual memory management function in each operating system, the virtual resource management function is placed in the system shared address space and shared by the plurality of virtual machines, and a file resource allocation release request from the plurality of virtual machines to the real volume device is file-excluded. Centralized management including control File resource management method in a virtual computer system, characterized in that the. 2. The file management unit performs file exclusion control related to a file resource allocation request for the real volume devices issued from jobs of the plurality of operating systems to manage allocation of the file resources of the real volume devices. The release management of the file resource in response to the release request of the file resource is performed at the same time.
A file resource management method in the described virtual computer system. 3. The file management unit manages a real file name corresponding to each sharable real volume device, a file exclusion control queue, and control information including various information necessary for file exclusion control. A file management table and a file resource allocation release request for the real volume device from each operating system are accepted, and if the file resource allocation release request is an exclusive allocation request for a file resource, the resource request table specified at the time of the request The corresponding file management entry in the file management table is obtained from the real file name, and it is checked whether or not the real volume device is a device that can be shared by the requesting operating system based on the control information of the file management entry. File resource allocation release required Is a file resource release request, the corresponding file management entry in the file management table is obtained from the actual file name in the resource request table specified at the time of the request, and the job identification name in the control information and the request job identification name , The job identifier area is reset and the file resource allocation release request is removed from the head of the file exclusion control queue, and the allocation result is the file resource allocation of the requesting operating system. The resource allocation release control means for notifying the job of the release request and the file resource allocation release request are connected in the first-in first-out method at the end of the file exclusion control queue of the corresponding file management entry, and the control information of the corresponding file management entry is obtained. Requested phi If is not assigned to any job, file exclusive control means for attaching the currently assigned indicator and registering the requesting job identification name, and the volume serial number and real file name when the real volume device becomes available 3. The file resource management method in the virtual computer system according to claim 2, further comprising: a real volume device recognition unit that recognizes the file management entry and creates a file management entry in the file management table.