JPH07182225A - On-line increasing/decreasing system for os resource - Google Patents

Abstract

PURPOSE:To efficiently execute the increment/decrement of a physical resource and a logical resource through an on-line without exerting influence upon files in an OS or an application. CONSTITUTION:In the case of increasing the physical resource 1, a physical resource increasing means 3 is started and a physical memory 7 to be increased is allocated to a pool '0'. In the case of decreasing the resource 1, a physical resource decreasing means 4 is started. The means 4 starts a monitoring task, and if an area in using exists in an area 8 to be descreased, the area is copied to an unused area and then a physical memory in the area 8 is deleted. In the case of increasing a logical resource 2, a stand-by resource area 10 for increment is previously secured, a resource 11 to be increased is allocated to the area 10 and the resource 11 is integrated into an idle chain for managing the resource. In the case of decreasing the resource 2, a resource 12 to be decreased is disconnected from the idle chain and the area of the resource 12 is integrated into the stand-by resource area 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an online resource increasing / decreasing method for increasing / decreasing resources, and more particularly, to increasing / decreasing resources online without updating files or initializing the OS. The present invention relates to an online resource increase / decrease system for setting OS resources.

[0002]

2. Description of the Related Art Increasing or decreasing OS resources includes increasing or decreasing the physical resources for increasing or decreasing the mounted memory or the like, and increasing or decreasing the logical resources (resources) for managing the states of various services performed by the OS. .

The conventional physical resource increasing / decreasing method and logical resource increasing / decreasing method will be described below. FIG. 11 is an explanatory diagram of a conventional method for adding a physical resource.

As shown in FIG. 1A, an OS file, a plurality of application files, and a free memory (pool 0) that can be used by anyone in the logical space of the computer.
Are allocated, each file is actually stored in the physical space, and free memory (pool 0) is allocated. The free memory (pool 0) is assumed to be located after the application file (n). Then, the correspondence relationship between the logical address that is the position in the logical space and the physical address that is the position in the physical space that is actually stored is specified by the address conversion table.

For example, when the memory is insufficient or when it is desired to add a file, the memory which is a physical resource will be added. Where application file (n
Consider mounting a memory in a space between -1) and the application file (n) where the memory has not been mounted until now (extension target part).

Conventionally, since the free memory (pool 0) is supposed to take a continuous area, even if the memory is mounted in the expansion target portion in the physical space, this area should be used immediately. I can't. Therefore, if this is left as it is, the additional memory will be wasted, and the meaning of the additional expansion will be lost. Therefore, it is necessary to reconstruct the file. That is, as shown in FIG. 9B, it is necessary to reload the application file (n) in the additional portion and increase the area of the free memory (pool 0) by the additional memory.

FIG. 12 is an explanatory diagram of a conventional method for reducing physical resources. Consider a case where a part of the free memory (pool 0) is deleted when a file is allocated with the configuration shown in FIG.

It is completely unknown who is using the free memory (pool 0) at that time. Therefore, if the removal target part is simply removed, the work of the user who has used the memory in the removal target part will stop, and the data etc. in the memory will also be lost. Cannot be simply removed. Therefore, it is necessary to change the management data managed by the OS and reset the OS.

FIG. 13 is a flowchart of a conventional physical resource increasing / decreasing process. When the increase / decrease of physical resources is started (S131), first, the data regarding the mounting status of the hardware (physical resource) on the existing OS (old OS) is changed according to the increase / decrease, and a new OS file is created. (S132). Next, the hardware is increased or decreased (S133). That is, the additional memory is mounted or the already mounted memory is removed. Then, the new OS file is initialized (started up) (S134), and if the new OS file is successfully started (OK), the new OS file and the old OS file are exchanged, and the physical resource addition / reduction processing is ended (S136). ). If the startup is not successful (NG), restore the old OS file (S1
35), the physical resource increase / decrease processing is ended (S13).
6). In such a case, after removing the cause of the startup failure, the physical resource increase / decrease process is performed again.

Next, a conventional method of increasing / decreasing logical resources will be described. 14 and 15 are explanatory diagrams of a conventional method for adding a logical resource. OS such as tasks and memory
What the OS provides is managed by the OS using logical resources called resources. A resource is provided for each service provided by the OS, and information such as the status of each service is written therein.

As shown in FIG. 14A, a resource area is provided in the logical space and the physical space, and a total of n + 4 resources are allocated. That is, this system can provide up to n + 4 services. Then, the OS forms an idle chain by connecting n + 4 resources in a chain at startup, and when using a service, removes one resource from this idle chain, allocates it to the service, To manage the service.

As shown in FIG. 14A, it is assumed that OS files and application files are allocated to the logical space and the physical space in addition to the resource area. Consider a case where a logical resource is added (the number of resources is increased) in this state. For example, assume that five resources are added.

If the resource area is simply expanded, the OS file area is invaded and the OS file is destroyed.
Therefore, the structure of all the files has been reconfigured, and the same figure (b)
As shown in FIG. 5, an area for 5 resources is vacated after the resource n + 4, and 5 resources are inserted therein. For that purpose, it is necessary to reconfigure all files and change the data of the logical resource managed by the OS.

In FIG. 14A, since the resource area is located at the very beginning of the logical space and the physical space, it is necessary to reconfigure all files when adding resources. When the resource area is allocated to another position and the resource is added, the subsequent files are reconfigured.

16 and 17 are explanatory views of a conventional method of reducing logical resources. An example is shown in which five resources, which were n + 9 resources, are deleted. If the n + 5th to n + 9th resources are simply reduced, the memory in that portion becomes empty and wasted, and the resources in use may be deleted. Therefore, the resource used in the part to be deleted is transferred to another resource, and all the files below the OS file are reconfigured so that as shown in (b) of FIG. Perform processing to fill the area.

FIG. 18 is a flow chart of a conventional method for increasing / decreasing the number of logical resources. When the increase / decrease of logical resources is started (S161), first, the existing OS (old O
The data for managing the logical resources on S) is changed according to the increase / decrease, and new files such as a new OS file and application are created (S162). Next, the initial setting (startup) of the new OS file is performed (S163), and if the start-up is successful (OK), the resource is installed (added) or released (removed) in the idle chain, and the new OS file is also created. The transfer is replaced and the process of increasing / decreasing the logical resource is terminated (S165). If the startup is not successful (NG), the old OS file is restored (S164), and the logical resource increase / decrease processing is ended (S165). In such a case, the cause of the startup failure is eliminated, and the logical resource increase / decrease process is performed again.

When a logical resource is increased / decreased in a system whose operation cannot be stopped, such as an operating exchange, operation and startup of a new file are performed at the same time. Incorporating (adding) or releasing (removing) resources in the chain
And load the new OS file and start operation with the new file.

[0018]

However, according to the conventional method, the number of O and
There is a problem in that it is necessary to change the S file and replace the file, and the OS must be initialized (started up) from scratch, which takes time and labor.
If the system is in operation, the OS
You have to change files, transfer files, and make initial settings. If an error occurs during the increase / decrease process, it may cause a problem to the operating system, which is a problem.

It is an object of the present invention to increase / decrease physical resources and logical resources even during system operation, without affecting processing during operation, in a short time, and without trouble. To do.

[0020]

FIG. 1 is a functional block diagram of the present invention. The present invention is premised on a computer system having a physical resource 1 such as a physical memory and a logical resource 2 that manages the states of various services such as tasks provided by the OS.

First, the physical resource adding means 3 is provided. The physical resource adding means 3 allocates the physical memory 7 which is a physical resource to be added to the free memory (pool 0). next,
It has a physical resource reduction means 4. The physical resource reduction means 4 is
The address conversion table is searched by a monitoring task having a low execution level, and if the physical memory area 8 to be deleted is in use, the area 9 in use is copied to a physical memory area other than the area 8 to be deleted. In addition, the physical memory in the reduction target area 8 is reduced.

Further, it has a logical resource adding means 5. The logical resource adding means 5 reserves a resource area 10 for adding a logical resource (resource) in advance in the logical space, allocates the additional resource 11 to the resource area 10, and then adds the additional resource 11. A logical resource is added by incorporating the minute resource 11 in the idle chain.

Finally, the logical resource reducing means 6 is provided. The logical resource removing means 6 releases the resource 12 to be removed, which is incorporated in the idle chain, from the idle chain, and newly expands the area in which the released resource 12 exists by the logical resource adding means 5. The resource area 10 for this purpose.

The physical resource expansion means 3 and the physical resource reduction means 4 retain the state of the physical resources before the increase / decrease during the increase / decrease of the physical resources, and when the failure occurs, the physical resource before the increase / decrease Return to resource status.

[0025]

Next, the operation of the functional block diagram of FIG. 1 will be described. When the physical memory 7 is added to the free area of the physical resource 1, the physical resource adding means 3 is activated. The physical resource adding means 3 mounts the physical memory 7 and frees the area.
The memory (pool 0) is allocated in the logical space and the physical space. As a result, the physical memory 7 can be added without affecting other files such as the OS and applications. During physical resource expansion, allocation information in the logical space and physical space before expansion is retained, and when a failure occurs, the state before expansion is restored.

When a part of the physical memory is removed from the physical resource 1, the physical resource removing means 4 is activated. The physical resource reduction means 4 activates a monitoring task having a low execution level, determines whether or not there is an area 9 in use in the reduction target area 8 by searching the address conversion table, and if it exists, Copies the in-use area 9 to an area other than the reduction target area 8. Then, the physical resource removing means 4 removes the physical memory of the removal target area 8.

On the other hand, when adding a logical resource (resource) 2 for managing the status of services such as memory and tasks provided by the OS, the logical resource adding means 5 is activated. Considering the case where the logical resource (resource) 2 is added, an area (resource area) 10 for adding the resource is secured in advance in the physical space and the logical space. Then, while allocating additional resources 11 to this resource area,
The additional resource 11 is incorporated in the idle chain of resources managed by the OS. This allows the OS to manage the additional resources 11.

When reducing the logical resources, the logical resource reducing means 6 is activated. The logical resource removing means 6 removes the resource 12 to be removed from the idle chain,
The allocation of the resource 12 in the logical space and the physical space is released. Then, the released area is allocated as a resource area 10 for adding resources in the future.

[0029]

FIG. 2 is a system configuration diagram of an embodiment.
The present invention is, for example, a computer
System 200 is assumed. The computer system 200 includes an I / O device such as a keyboard and a display.
The device 280 and an external storage device 290 such as a magnetic disk are connected.

The computer system 200 includes a CPU 21
0, an I / O interface 230, a main memory 220, etc. The I / O device 280 and the external storage device 290 are connected to the computer system 200 via the I / O interface 230.

The main memory 220 is, for example, some RAs.
It is composed of the memory board 240 on which M is mounted. A folder for mounting the memory board 240 is provided in the computer system 200, and a hardware mounting table 250 is a table indicating whether or not the memory board 240 is mounted. The OS 221 manages this hardware mounting table 250. In addition, it has an address conversion table 260 which is a table for converting addresses in the logical space and the physical space.

In the main memory 220, an OS 221 for managing the computer system, various tasks 223 provided by the OS 221, various application files 1 to n (225-1 to 225-n), There is a free memory (pool 0) 226, which is a memory area that can be used by all.

As a task for increasing / decreasing the physical resources and logical resources of the present invention, an increase / decrease task 223-2 is placed on the main memory. When physical resources or logical resources are increased or decreased, this increase / decrease task 223-2 is activated and processing is performed.

When the increase / decrease task 223-2 is activated, first, a flag indicating that the increase / decrease is in progress (increase / decrease instructing flag 224) is set. This flag 224 is used to determine whether or not the increase / decrease is underway when a failure occurs.

FIG. 3 is an explanatory diagram of a physical resource adding method according to an embodiment. OS files, application files 1 to n, and free memory (pool 0) are allocated in the logical space and the physical space as shown in FIG. 8A, and in the physical space, before the application file n. Memory shall be added.

The physical resource expansion method of this embodiment is characterized in that the memory to be expanded is incorporated into the free memory (pool 0). FIG. 4 is a flowchart of physical resource addition according to an embodiment.

First, a flag (normal operation / increase / decrease instructing instruction flag) 290 indicating that the increase / decrease is in progress is set (S).
41). Then, the management data of the OS is saved in another memory area (S42). This means that the operation of, for example, a switch cannot be stopped when the system is operating. Therefore, the flag 290 is set and the data is held so that the saved data can be returned to the area of the original management data when a failure occurs during the increase / decrease.

Then, an additional memory is mounted (S4
3). Next, the contents of the hardware mounting table are changed (S
44). That is, the data at the position of the additional memory in the hardware mounting table is changed to a value indicating that mounting has been completed. Next, the management data of the OS is changed so that the additional memory is incorporated in the free memory (pool 0) (S45). That is, in the logical space, the contents of the address conversion table are changed so that the free memory (pool 0) for the additional memory is continuously placed after the existing free memory (pool 0) (FIG. 3). Finally, the increase / decrease installation instruction flag is returned to the original (S46).

Through the above processing, physical resources can be added without changing other files. Figure 5
It is explanatory drawing of the physical resource reduction method of one Example.

OS files, application files 1 to n, and free memory (pool 0) are allocated in the logical space and physical space as shown in FIG. 9A, and the free memory (pool 0) is allocated. Part of it will be removed.

In the case of the reduction, there is a problem whether or not the reduction target portion is in use. If it is in use, it is necessary to copy the contents of the in-use part to an unused area in the free memory (pool 0) and then remove the part to be removed ((b) in the figure).

FIG. 6 is a flowchart of physical resource reduction according to an embodiment. First, a flag (normal operation / increase / decrease instruction flag) 290 indicating that the increase / decrease is in progress is set (S61). Then, the management data of the OS is saved in another memory area (S62).

Next, the management data of the OS is changed and the removal target portion is set to be removed (S63). Then, a monitoring task is activated to determine whether or not there is any one using the reduction target portion (S64). The monitoring task is a task with a relatively low execution level so as not to interfere with other running tasks. The monitoring task first searches for a physical address in the address conversion table (S641), and checks whether or not there is a physical address of the part to be removed (S642). If not (N), the processing of the monitoring task is completed, and the process returns to the original program. If there is a physical address of the part to be deleted (Y), the content of the physical address is copied to an unused area in the free memory (pool 0) (S643). Then, the physical address portion of the address conversion table is rewritten to the physical address of the copied area (S644). As a result, the programs and data in use that were in the reduction target portion are copied to another area of the free memory (pool 0), and the user can continue to use them without being aware of this.

Next, the hardware mounting table is changed for the reduction target portion (S65), and then the hardware of the reduction target portion is actually reduced (S66). Finally, the increase / decrease addition instruction flag is returned to the original state (S67), and the reduction processing is completed.

Through the above processing, physical resources can be added without changing other files. Figure 7
It is explanatory drawing of the addition method of the logical resource of one Example.

Files such as OS files and logical resources (resources that are tables for managing information on services provided by the OS) are allocated in the logical space and physical space as shown in FIG. 10 resources (resources n + 5 to n + 14) are added. Before the addition, resources 1 to n + 4 form an idle chain as shown in FIG.

In the logical resource expansion method of this embodiment, a logical resource expansion area is reserved in advance as a reserved resource area after the conventional resource area, and logical resources can be expanded in that area. It is a feature.

FIG. 8 is a flowchart of physical resource addition according to an embodiment. First, a memory area required for expansion, for example, 10 resources here is secured in the logical space and the physical space, and the position in the logical space and the position in the physical space on the address conversion table are allocated. Is allocated (S81).

After that, the added resource (here, 10
The individual resources) are connected to the idle chain as logical resources (S82). That is, n + to the n + 4th resource
By setting the pointer in each resource so that the 5th resource is connected, and the resources from n + 5th to n + 14 are connected in order, and by setting the pointer to return to the beginning from the n + 14th resource , Create a new idle chain (Fig. 7
(B)).

With the above processing, the logical resource addition processing is completed. Finally, a method of reducing logical resources will be described. FIG. 9 is an explanatory diagram of a logical resource reduction method according to an embodiment. FIG. 3A shows the configuration of an idle chain of a logical space, a physical space, and resources before the reduction.

Before removal, there are n + 14 resources in the resource area, 10 of which (n + 5 to n + 14th)
The following resources will be removed. FIG. 10 is a flowchart of a logical resource reduction method according to an embodiment.

First, the existing idle chain (see FIG. 9)
Remove the resource to be removed from (a)) (S10)
1). That is, for example, from the (n + 4) th resource to n
Remove the pointer that was connected to the + 5th resource, and reset the pointer so that the n + 4th resource and the beginning are connected. Next, the memory areas corresponding to the n + 5 to n + 14th resources removed from the idle chain are allocated as reserved resource areas on the address conversion table (S102).

Through the above processing, the reduction of logical resources is completed without affecting other files.

[0054]

According to the present invention, it is possible to increase or decrease the physical resources and logical resources managed by the OS without changing files such as the OS and applications and initializing (starting up) the OS. Therefore, it is possible to improve the processing efficiency of the physical resource and logical resource increase / decrease processing.

[Brief description of drawings]

FIG. 1 is a functional block diagram of the present invention.

FIG. 2 is a system configuration diagram of an embodiment.

FIG. 3 is an explanatory diagram of a physical resource addition method according to an embodiment.

FIG. 4 is a flowchart of a physical resource adding method according to an embodiment.

FIG. 5 is an explanatory diagram of a physical resource reduction method according to an embodiment.

FIG. 6 is a flowchart of a physical resource reduction method according to an embodiment.

FIG. 7 is an explanatory diagram of a logical resource addition method according to an embodiment.

FIG. 8 is a flowchart of a logical resource addition method according to an embodiment.

FIG. 9 is an explanatory diagram of a logical resource elimination method according to an embodiment.

FIG. 10 is a flowchart of a logical resource reduction method according to an embodiment.

FIG. 11 is an explanatory diagram of a conventional physical resource addition method.

FIG. 12 is an explanatory diagram of a conventional physical resource reduction method.

FIG. 13 is a flowchart of a conventional physical resource increasing / decreasing method.

FIG. 14 is an explanatory diagram (part 1) of a conventional method of adding a logical resource.

FIG. 15 is an explanatory diagram (Part 2) of the conventional method of adding a logical resource.

FIG. 16 is an explanatory diagram (1) of a conventional logical resource reduction method.

FIG. 17 is an explanatory diagram (part 2) of a conventional logical resource reduction method.

FIG. 18 is a flowchart of a conventional method for increasing / decreasing logical resources.

[Explanation of symbols]

 1 Physical Resources 2 Logical Resources 3 Physical Resource Expansion Means 4 Physical Resource Reduction Means 5 Logical Resource Expansion Means 6 Logical Resource Reduction Means 7 Physical Memory 8 Areas to be Reduced 9 Areas in Use 10 Resource Areas 11 Resources 12 Resources

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takanari Hoshiai 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (3)

[Claims] 1. In a computer system having a physical resource 1 such as a physical memory and a logical resource (resource) 2 for managing the states of various services such as tasks provided by an OS, a physical system to be added by online processing. A physical resource expansion unit 3 for allocating a physical memory 7 as a resource to a free memory (pool 0) and an address conversion for allocating a logical space and a physical space by activating a monitoring task having a low execution level When the table is searched and the physical memory area 8 to be deleted has an area 9 in use, the area 9 in use is copied to a physical memory area other than the physical memory area 8 to be deleted, and then the physical memory area 8 is deleted. A physical resource reduction unit 4 for reducing the physical memory of the setting target area 8 by online processing, and an area for adding logical resources in advance. An idle chain for allocating a resource area 10 in a logical space, allocating an additional resource 11 in the resource area 10 by online processing, and managing the additional resource 11 resources And the logical resource adding means 5 for adding a logical resource by incorporating the resource into the idle chain and the resource 12 to be reduced, which is incorporated in the idle chain, is released from the idle chain by online processing, and the area in which the released resource 12 exists An online resource increase / decrease system for OS resources, further comprising: a logical resource reduction unit 6 serving as a resource area 10 for newly adding a resource by the logical resource addition unit 5. The physical resource adding unit 3 and the physical resource removing unit 4 retain the state of the physical resource before the increase / decrease during the increase / decrease of the physical resource, and when the failure occurs, the state of the physical resource before the increase / decrease. Return to. 2. The physical resource adding means 3 according to claim 1.
Is an online resource increase / decrease method for OS resources, characterized in that information on physical resources before the expansion is retained during the expansion process, and when a failure occurs, the state of the physical resources before the expansion is restored. 3. The physical resource reducing means 4 according to claim 1.
Holds the information of the physical resources before the removal during the removal process, and restores the state of the physical resources before the removal when a failure occurs, which is an online resource increase / decrease method for OS resources. .