JPH1185575A - Dynamic partition control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dynamic partition control system with which plural pieces of partition information can be dynamically switched during system operation. SOLUTION: This system is provided with a switching request factor part 1 for generating the factor of a partition switching request, indicator part 3 indicating a switching request flag corresponding to that switching request and one under operating at present of plural pieces of partition information 5a in a disk part 5, loader part 4 for managing and loading the information quantity of partition information 5a, and system operating area part 6 having a system operating area actually under operating. At a partition control part 2, reception processing is performed corresponding to the factor generation of the partition switching request, that switching request is instructed to a designated area among system operating areas while being matched with any partition information corresponding to that switching request, and the partition information 5a is dynamically switched and controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, in this type of partition control system, the OS of a CPU to be updated is partitioned by partitions, so that a remote CPU updates the OS.

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

That is, here, the contents of the disk held on the remote revision management CPU are transferred and saved to the revision work disk via a line, and the operation is continued while the OS running on the CPU to be revised is temporarily saved to the main storage unit. A revision means has been constructed in which a new OS is started from the next reboot using a new OS transferred and stored in a revised work disk.

[0005]

In the above-described partition control system, the switching of the OS is performed when the system is restarted, so that the dynamic partition switching cannot be performed while the system is operating. There is.

[0006] In addition, since remote control is required, at least one or more computer systems are required in addition to the computer system to be revised, and there is a problem that the system becomes complicated and large-scale.

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

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a technical problem of the present invention is to provide a simple computer system capable of dynamically switching a plurality of pieces of partition information while the system is operating. Another object of the present invention is to provide a dynamic partition control system having a simple configuration.

[0009]

According to the present invention, a disk provided in a system which responds to a partition switching request by operating under program control to perform a reception process in response to the occurrence of a partition switching request from a user. A dynamic partition control unit having a partition control unit that dynamically switches and controls the plurality of pieces of partition information by designating the partition switching request to a designated area in the system operation area according to any of the plurality of pieces of partition information in the unit. The system is obtained.

Further, according to the present invention, in the dynamic partition control system, a switching request factor portion for generating and transmitting a partition switching request, a switching request flag provided in response to the partition switching request, and a plurality of pieces of partition information. An indicator unit that indicates the state of the currently operating one of the
A dynamic partition control system including a loader unit that manages and loads information amounts of a plurality of pieces of partition information and a system operation area unit having a memory area that is actually operating as a system operation area is obtained.

Further, according to the present invention, in the dynamic partition control system, the indicator section includes a request flag storage section storing ON / OFF of a flag corresponding to a plurality of pieces of partition information as a switching request flag, and a plurality of partitions. A dynamic partition control system including a partition indicator indicating a currently operating one of the information; a loader unit for extracting a plurality of pieces of partition information from a disk unit; and a system for extracting a plurality of pieces of partition information. A volume identification unit that changes the compression ratio according to the amount of information based on the result of checking the operation area and performs compression, and a compression and decompression unit that compresses and decompresses when the information amount of a plurality of partition information is large. Die The dynamic partition control system or the system operation area unit includes a dynamic partition including an operation area management unit that manages an operation area in the system operation area in accordance with an instruction of a partition switching request and locks or unlocks a specified area. A control system 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 a partition switch request and turns on a corresponding switch request flag.
The switch request reception processing unit, the active partition detection unit that detects the currently operating one from multiple pieces of partition information and outputs the detection result, and compares the content of the detection result with the content of the switch request flag A dynamic partition control system including a comparison processing unit that outputs a result and a switching execution unit that instructs a designated area to issue a partition switching request in accordance with one extracted based on the comparison result among the plurality of partition information is obtained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A dynamic partition control system according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing a basic configuration of a dynamic partition control system according to one embodiment of the present invention. The dynamic partition control system includes a switching request factor unit 1 for generating and transmitting a partition switching request from a user generated from an OS or the like through an input device such as a keyboard, and transmitting a plurality of pieces of partition information 5a relating to each of the OS programs. The disk unit 5 that has been stored, a switching request flag corresponding to the partition switching request, an indicator unit 3 that indicates the status of the currently operating one of the plurality of partition information 5a of the disk unit 5, and information of the plurality of partition information 5a A loader unit 4 for managing and loading an amount, a system operation area unit 6 having a system operation area that is actually operating, and accepting processing in response to occurrence of a factor of a partition switching request, and responding to the partition switching request. Multiple Partition information 5
a switching request to a designated area in the system operation area in accordance with any one of the
and a partition control unit 2 for dynamically switching control of a.

The indicator unit 3 includes a request flag storage unit 31 storing ON / OFF of flags corresponding to a plurality of pieces of partition information 5a as switching request flags in response to a request from a higher-level module such as an OS. Of the currently operating OS (indicating from which partition information 5a the currently operating OS has been loaded) among the partition information 5a.

The loader unit 4 extracts a plurality of pieces of partition information 5a from the disk unit 5 based on the result of checking the system operation area of the system operation area unit 6 when extracting the plurality of pieces 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 and decompression unit 43 that performs compression and decompression when the information amount of the plurality of pieces of partition information 5a is large.

The system operation area 6 is an operation area (usually a memory space using a DRAM or the like) in the system operation area as a memory area where the OS is actually operating in accordance with the instruction of the partition switching request. Operating area management unit 6a that manages a locked area or releases a locked state in a designated area.
It has.

The partition control unit 2 receives a partition switching request, and if necessary, switches a corresponding switching request flag to ON by writing, and a plurality of partition information 5a.
An active partition detection unit 22 that detects a currently operating device from among them 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 instructing the designated area to perform a partition switching request in accordance with the one extracted from the comparison result a (that is, executing the requested partition loader 42 according to the partition information 5a passed as the comparison result); It has.

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

Here, first, the switching request reception processing section 21 of the partition control section 2 determines whether or not a switching request has been generated by the switching request factor section 1 based on whether or not a switching request has been generated (step S1).
If it has not occurred, the process returns before this processing and waits until it occurs, but if it has occurred, the switching request is received and the partition information requested by the request flag storage unit 31 in the indicator unit 3 is received. Is turned on (step S2), and after the flag processing, the process proceeds to the next processing.

Therefore, the active partition detection section 22 of the partition control section 2 detects which partition information of the OS currently used is the partition information from the partition indicator 32 and detects 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 which partition information the OS started up is in the active (operating) state, The contents of the switching request flag indicating the partition information are compared to determine whether or not they match, based on whether or not the request partition and the active partition match (step S4), and output the comparison result.

As a result, if they match, the same OS
Need not be started, and the process is terminated because there is no change in the system operation area. However, if they do not match, it is determined that there is a start request for another OS, and it is determined whether or not the first switching request has been generated. The process returns before the determination (step S1). At the time of the comparison and collation, the switching execution unit 24 saves the system data as appropriate partition information according to the partition indicator 32 for the operating OS at the time of the partition switching request (Step S).
5) Do it.

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) Yes. Thereafter, the partition loader 42 determines whether the partition data to be loaded (the 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 unit 41 checks the system operation area of the system operation area unit 6 and determines whether there is a sufficient workspace area for loading (system operation). Is determined whether or not 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 setting value (step S10), but if the work size is not sufficient, the compression / decompression unit 43 changes the setting value of the compression ratio to fit within the workspace. After setting the compression ratio (step S9), the system data in the partition is compressed (step S10).

Thereafter, it is determined whether or not the size to be loaded is larger than the set value (step S7), and the data is loaded into the system operation area (step S11) as in the case where the size is equal to or smaller than the set value. In the system operation area section 6, when necessary system data is loaded, the operation area management section 61
After locking the currently loaded system area (step S12) by locking the operation area (system area) of the designated area where the loaded system data is mapped to protect it from external data writing, etc. The switching request flag is cleared by the previously executed partition loader 42 (step S1).
3) to prepare for the next switching request.

Thereafter, the system data outside the area locked by the lock of the currently loaded system area by the routine in the partition loader 42 (step S12) is flashed (step S14), and the decompression (step S15) processing is performed. By releasing the lock of the load area (step S16), the requested O
S operates.

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 time when the switching request flag is turned on (step S2). FIG. 11B relates to the process of detecting the active partition (step S3). Here, the partition information 5a is, for example, a switch request flag ON (step S) in the order of processing from partition 1 to partition N.
2) During processing, the request flag bit of partition 3 is set to O
N (= 1) [however, it becomes 0 after clearing the switching request flag (step S13)], and the partition 6 receives the active indicator (= 1) is shown.

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

At this time, for example, as shown in FIG.
System operation area unit 6 when a partition switching request is made
A system operating in the system operation area of
Assuming that x1-MB is occupied and the rest is ex2-MB, loading the partitions that are too large basically places a load on the system, so loadable setting values are set in advance. You.

Therefore, if this size is temporarily 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 into the range of ex2-MB. Also, Ex
If 2> part1, part1 is used as it is in ex2
-Load in the range of MB, and also load Part1 in the range of ex2-MB even if Part1 <set1. Thereafter, ex2-MB is sent to an operation area management unit 61 provided for each operation area in the system operation area unit 6.
By requesting a lock in the range, external access is prohibited. After that, the operating system in the range of ex1-MB is flushed (erased) by the partition loader 42 at the time of request, the compressed module loaded in the range of ex2-MB is decompressed by the partition loader 42, and the range of the ex2-MB is locked. Cancel. The new OS operates by canceling 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 independent of the OS, and operate independently of the OS as required. The result is returned through a common interface in the system, and the partition information can be switched only by storing the active information and the 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 a user restarting the system.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing an operation process of the dynamic partition control system shown in FIG. 1;

FIGS. 3A and 3B are schematic diagrams of partition information shown for specifically explaining the operation processing shown in FIG. 2; FIG. 3A is related to the ON processing of a switching request flag, and FIG. It is about time.

4 exemplifies data of a system operation area at the time of a partition switching request shown for specifically explaining the operation processing shown in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switching request factor part 2 Partition control part 3 Indicator part 4 Loader part 5 Disk part 5a Partition information 6 System operation area part 21 Switching request reception processing part 22 Active partition detection part 23 Comparison processing part 24 Switching execution part 31 Request flag storage part 32 Partition Indicator 41 Volume Identification Unit 42 Partition Loader 43 Compression / Decompression Unit 61 Operating Area Management Unit

Claims (6)

[Claims] An information processing apparatus operates under program control to perform a reception process in response to a factor of a partition switching request from a user, and stores one of a plurality of pieces of partition information in a disk unit provided in a system corresponding to the partition switching request. A dynamic partition control system further comprising a partition control unit for dynamically switching and controlling the plurality of pieces of partition information by instructing the partition switching request to a designated area in a system operation area. 2. The dynamic partition control system according to claim 1, wherein: a switching request factor unit for generating and transmitting the partition switching request as a factor;
A switching request flag provided in response to the partition switching request, an indicator unit for indicating a state determination of a currently operating one of the plurality of partition information, and a loader unit for managing and loading an information amount of the plurality of partition information A dynamic partition control system comprising: a system operation area having a memory area actually operating as the system operation area. 3. The dynamic partition control system according to claim 2, wherein the indicator unit includes a request flag storage unit that stores ON / OFF of a flag corresponding to the plurality of pieces of partition information as the switching request flag. A partition indicator indicating a currently operating one of the partition information items. 4. The dynamic partition control system according to claim 2, wherein the loader unit extracts 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 ratio according to the amount of information based on the check result and performs compression, and a compression and decompression unit that compresses and decompresses when the information amount of the plurality of pieces of partition information is large. A dynamic partition control system. 5. The dynamic partition control system according to claim 2, 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. 6. The dynamic partition control system according to claim 2, wherein the partition control unit receives the partition switching request and turns on a corresponding switching request flag. And an active partition detection unit that detects a currently operating one from the plurality of pieces of partition information and outputs a detection result, and outputs a comparison result by comparing the content of the detection result with the content of the switching request flag. Dynamic partition control comprising: a comparison processing unit that performs a partition switching request to the designated area in accordance with one extracted from the plurality of pieces of partition information based on the comparison result. system.