JP3424729B2 - Dynamic partition control system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a dynamic partition control system for dynamically switching control of partition information in a disk section included in an operating system (hereinafter referred to as OS).

[0002]

2. Description of the Related Art Conventionally, in a partition control system of this type, the OS of a CPU subject to revision is partitioned by partitions so that the OS is revised from a remote CPU.

A well-known technique related to such a function is, for example, a program remote revision system disclosed in Japanese Patent Laid-Open No. 7-253891. The partition control system here is to revise the OS of the CPU subject to revision in a computer system having an area (partition) divided for each OS, and specifically, a remote revision management CPU that operates remotely. It is composed of a revised work disk of the CPU to be revised and a system volume on the disk in which the new edition operating system is stored.

That is, here, the contents of the disk held in the remote revision management CPU are transferred to and saved in the revision work disk through the line, and the OS operating on the CPU subject to revision is temporarily saved in the main storage unit to continue the operation. A revision means is constructed such that the new OS is transferred and saved to the revision work disk and the new OS is activated from the next reboot.

[0005]

In the above-mentioned partition control system, since the OS is switched when the system is restarted, it is impossible to perform dynamic partition switching while the system is operating. There is.

Further, since it is a remote operation, there is a problem that at least one computer system is required in addition to the computer system to be revised, and the system becomes complicated and large-scale.

Further, since the new OS is revised, there is the inconvenience in handling that a plurality of OSs cannot be handled.

The present invention has been made to solve such a problem, and its technical problem is to simply switch a plurality of partition information dynamically during system operation by a single computer system. It is to provide a dynamic partition control system having a simple configuration.

[0009]

According to the present invention, a disk provided in a system corresponding to a partition switching request, which is operated under program control, performs an acceptance process in response to a cause of a partition switching request from a user. By issuing the partition switching request to a designated area in the system operation area in accordance with any of the plurality of partition information in the unit, a partition control unit that dynamically controls switching of the plurality of partition information, and a partition switching request A switching request factor portion for generating and transmitting a factor, a switching request flag given in response to a partition switching request, and an indicator portion for indicating the status judgment of the currently operating one of the plurality of partition information, and information of a plurality of partition information Tube quantity And a system operation area section having a memory area that is actually operating as a system operation area, and the indicator section turns on a flag corresponding to a plurality of partition information as a switching request flag. A dynamic partition control system including a request flag storage unit storing ON / OFF and a partition indicator indicating a currently operating one of a plurality of pieces of partition information can be obtained.

Further, according to the present invention, in the above-mentioned dynamic partition control system, the loader section checks the partition loader for extracting each of the plurality of partition information from the disk section, and the system operation area when extracting the plurality of partition information. A dynamic partition control system including a volume identification unit that changes the compression rate according to the amount of information based on the result and performs compression, and a compression / decompression unit that performs compression / decompression when the information amount of a plurality of partition information is large Is obtained.

Further, according to the present invention, in the above-mentioned dynamic partition control system, the system operation area unit manages the operation area in the system operation area in accordance with the instruction of the partition switching request, and locks or locks the specified area. A dynamic partition control system having an operation area management unit for canceling is obtained.

In addition, according to the present invention, in the dynamic partition control system according to any one of the above, the partition control unit receives the partition switching request and turns on the corresponding switching request flag.
The switching request acceptance processing unit, the active partition detection unit that detects the currently operating one from a plurality of partition information and outputs the detection result, and the content of the detection result and the content of the switching request flag are compared and compared. A dynamic partition control system including a comparison processing unit that outputs a result and a switching execution unit that instructs a partition switching request to a designated area according to one of a plurality of pieces of partition information extracted based on a comparison result is obtained.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The dynamic partition control system of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the basic configuration of a dynamic partition control system according to an embodiment of the present invention. This dynamic partition control system includes a switching request factor unit 1 for generating and sending a partition switching request from a user generated from an OS or the like through an input device such as a keyboard, and a plurality of partition information 5a related to each OS program. Information of the stored disk unit 5, the switching request flag in response to the partition switching request, and the indicator unit 3 indicating the status judgment of the currently operating one of the plurality of partition information 5a of the disk unit 5, and the information of the plurality of partition information 5a. A loader unit 4 that manages and loads the amount, a system operation region unit 6 that has a system operation region that is actually operating, and an acceptance process is performed according to the cause of a partition switching request, and the partition switching request is handled. Multiple Partition information 5
The switching request is issued to the designated area in the system operation area in accordance with any of a.
and a partition controller 2 for dynamically switching a.

Of these, the indicator unit 3 includes a request flag storage unit 31 storing ON / OFF of flags corresponding to a plurality of partition information 5a as a switching request flag in response to a request from an upper module such as an OS, and a plurality of request flag storage units 31. Partition information 5a of the partition information 5a currently being operated (which partition information 5a the currently operating OS was loaded from) which is a partition indicator 32.

The loader section 4 draws out each of the plurality of partition information 5a from the disk section 5, and based on the result of checking the system operation area of the system operation area section 6 when extracting the plurality of partition information 5a. A volume identification unit 41 that changes the compression ratio according to the amount of information and performs compression, and a compression / decompression unit 43 that performs compression / decompression when the information amount of the plurality of partition information 5a is large.

The system operation area unit 6 is an operation area (usually a memory space using DRAM or the like in the system operation area as a memory area in which the OS is actually operating according to the instruction of the partition switching request, and the OS is operating The operating area management unit 6a that manages the locked area or unlocks the locked area in the specified area.
Is equipped with.

The partition control unit 2 receives a partition switching request, and when necessary, writes a corresponding switching request flag to turn it ON, and a plurality of partition information 5a.
, An active partition detection unit 22 that detects a currently operating one and outputs a detection result, a comparison processing unit 23 that compares the content of the detection result with the content of the switching request flag and outputs a comparison result, Partition information 5
A switching execution unit 24 that instructs a partition switching request to a designated area according to the one of a extracted based on the comparison result (that is, executes the requested partition loader 42 according to the partition information 5a passed as the comparison result). Is equipped with.

FIG. 2 is a flow chart showing the operation processing of this dynamic partition control system.

Here, first, the switching request acceptance processing unit 21 of the partition control unit 2 determines whether or not the switching request factor unit 1 causes the partition switching request (step S1).
If it does not occur, the process returns before this processing and waits until it occurs, but if it occurs, the partition information requested by the request flag storage unit 31 in the indicator unit 3 in response to this switching request. The switch request flag corresponding to is turned on (step S2), and after the flag process, the process proceeds to the next process.

Therefore, the active partition detection section 22 of the partition control section 2 detects which partition information the partition information of the OS currently being used is from the partition indicator 32 by an instruction to detect the active partition (step S3). )I do.

Next, in the comparison processing unit 23 of the partition control unit 2, the contents of the detection result indicating from which partition information the OS started up is in the active (operating) state, and the OS requested to be started up. The contents of the switching request flag indicating the partition information are compared to determine whether they match or not, and it is determined whether the requested partition and the active partition match (step S4), and the comparison result is output.

As a result, if they match, the same OS is again used.
The process ends because there is no need to boot the system and no change occurs in the system operating area. If they do not match, it is determined that there is another OS boot request, and whether or not the first switch request has occurred. The process returns before the determination (step S1). At the time of this comparison and collation, the switching execution unit 24 saves the system data as appropriate partition information according to the partition indicator 32 regarding the operating OS at the time of the partition switching request (step S
5) Do.

Subsequently, the switching execution section 24 executes the requested partition loader 42 according to the partition information passed from the comparison processing section 23 (step S
6) Do. After that, the partition loader 42 determines whether the partition data to be loaded (size to be loaded) is larger than the set value by the volume identification unit 41 (step S7).

As a result, if the size to be loaded is larger than the set value, the volume identification section 41 checks the system operation area of the system operation area section 6 to determine whether there is a work space area sufficient for loading (system operation). Determine whether the work size of the area is sufficient (step S
8) If the work size is sufficient, the compression / decompression unit 4
3, the system data in the partition to be loaded is compressed with the normal set value (step S10), but if the work size is not sufficient, the compression / decompression unit 43 changes the set value of the compression rate to fit within the workspace. Then, the compression rate is set (step S9), and then the system data in the partition is compressed (step S10).

After that, the system operation area is loaded (step S11) in the same manner as when the size to be loaded is larger than the set value (step S7) and is equal to or smaller than the set value. In the system operation area unit 6, when necessary system data is loaded, the operation area management unit 61
After locking the currently loaded system area (step S12) by locking the operating area (system area) of the specified area where the system data loaded by , The partition loader 42 executed previously clears the switching request flag (step S1
3) and prepare for the next switching request.

After that, the routine in the partition loader 42 flushes the system data outside the area locked by the lock of the previously loaded system area (step S12) (step S14) and then decompresses it (step S15). After that, by unlocking the load area (step S16), the requested O
S works.

FIG. 3 is a schematic diagram of the partition information 5a shown in order to specifically explain the operation processing here, and FIG. 3 (a) relates to the ON (step S2) processing of the switching request flag. The same figure (b) relates to active partition detection (step S3). The partition information 5a here is, for example, in the sequence processed from partition 1 to partition N, for example, when the switching request flag is ON (step S
2) When processing, the request flag bit of partition 3 is O
N (= 1) (however, = 0 after clearing the switching request flag (step S13)), and the partition 6 indicates the active indicator (= when the partition switching request is made during active partition detection (step S3). 1) is shown.

In the dynamic partition control system, when each bit data is stored by the program and compared, when the control shifts to the switching execution unit 24 due to the difference in the partition position, the partition loader 42 corresponding to the partition indicator 32
Is called, and the requested partition information 5a of the disk unit 5 is sucked up through the volume identification unit 43.

At this time, for example, as shown in FIG.
System operation area 6 when requesting partition switching
The system operating in the system operation area of
If it occupies x1-MB and the rest is ex2-MB, basically the system will be loaded to load too large partitions all at once, so loadable setting values are set in advance. It

Therefore, assuming that this size is set1-M
B, partition information to be loaded is part1-MB
Then, if Part1> set1, ex2-M
Compared with B, if part1> ex2, the set compression ratio is changed and loaded in the range ex2-MB. Also, Ex
When 2> part1, part1 is ex2 as it is.
-Load to the range of MB, and even when Part1 <set1, load part1 to the range of ex2-MB as it is. After that, to the operation area management unit 61 provided for each operation area in the system operation area unit 6, ex2-MB
Access from outside is prohibited by requesting the lock of the range. After that, the partition loader 42 flashes (erases) the operating OS in the ex1-MB range at the time of request, decompresses the compression module loaded in the ex2-MB range by the partition loader 42, and locks the ex2-MB range. To cancel. The new OS operates by releasing it.

[0032]

As described above, according to the dynamic partition control system of the present invention, a plurality of partitions in the disk unit are managed by means that does not depend on the OS, and operate independently of the OS when required. The configuration result is returned through a common interface in the system, and partition information can be switched by simply storing active information and request information from the OS, etc. for a plurality of partition information in the disk unit. As a result, it is possible to dynamically switch a plurality of OSs in the disk unit during system operation with a simple configuration of only one computer system without the user having to restart the system.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a dynamic partition control system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation process of the dynamic partition control system shown in FIG.

3A and 3B are schematic diagrams of partition information shown in order to specifically explain the operation processing shown in FIG. 2, in which FIG. 3A is related to ON processing of a switching request flag, and FIG. 3B is active partition detection processing. It is about time.

FIG. 4 is an example of data in a system operation area at the time of a partition switching request, which is shown to specifically describe the operation processing shown in FIG.

[Explanation of symbols]

1 Switching request factor section 2 Partition control unit 3 Indicator section 4 Loader section 5 disk section 5a Partition information 6 System operating area 21 Switching request acceptance processing unit 22 Active partition detector 23 Comparison processing unit 24 Switching execution unit 31 request flag storage 32 partition indicator 41 Volume identifier 42 partition loader 43 Compression / decompression section 61 Operation Area Management Unit

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Claims (4)

(57) [Claims] 1. A program control operation is performed to perform acceptance processing in response to a cause of a partition switching request from a user, and any one of a plurality of pieces of partition information in a disk unit included in a system corresponding to the partition switching request. A partition control unit that dynamically controls switching of the plurality of partition information by instructing the partition switching request to a designated area in the system operation area, and a switching request factor that causes and outputs the partition switching request. Section, a switching request flag given according to the partition switching request, and an indicator section for indicating the state judgment of the currently operating one of the plurality of partition information, and managing and loading the information amount of the plurality of partition information. Do A loader section and a system operation area section having a memory area that is actually operating as the system operation area are provided, and further, the indicator section turns on a flag corresponding to the plurality of partition information as the switching request flag. A dynamic partition control system, comprising: a request flag storage unit storing ON / OFF, and a partition indicator showing the currently operating one of the plurality of partition information. 2. The dynamic partition control system according to claim 1, wherein the loader unit extracts a partition loader for extracting each of the plurality of partition information from the disk unit, and the system operation area when extracting the plurality of partition information. A volume identification unit that changes the compression rate according to the amount of information based on the result of checking and performs compression, and a compression / decompression unit that performs compression / decompression when the information amount of the plurality of partition information is large. A dynamic partition control system characterized by that. 3. The dynamic partition control system according to claim 1, wherein the system operation area unit manages an operation area in the system operation area according to an instruction of the partition switching request, and locks or locks the specified area. A dynamic partition control system comprising an operation area management unit for releasing a state. 4. The dynamic partition control system according to claim 1, wherein the partition control unit receives the partition switching request and turns on a corresponding switching request flag to switch request receiving processing. Section, an active partition detection section that detects a currently operating one from the plurality of partition information and outputs a detection result, and outputs the comparison result by comparing the content of the detection result and the content of the switching request flag. Dynamic partition control, comprising: a comparison processing unit for performing the partition switching request to the designated area according to the comparison information extracted from the plurality of pieces of partition information based on the comparison result. system.