JP2016045034A - Information processing system, control method therefor, and control program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a damage that an information processing system suffers when an earthquake actually occurs by using an earthquake early warning and to enable early recovery when the earthquake early warning is a false report.SOLUTION: A CPU module 10 has a CPU 11 performing arithmetic processing and a main memory 12. The main memory 12 has OS startup file storage means 13 for storing an OS startup file 80. When an earthquake early warning is received, the OS is halted, and a secondary storage device is halted. At this time, a CPU module power supply maintains supply of electric power. When a prescribed time elapses and it is determined that the earthquake early warning is a false report, the OS is restarted from the OS startup file 80 stored in the OS startup file storage means 13.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing system, a control method thereof, and a control program thereof.

  The Earthquake Early Warning immediately analyzes the observation data captured by a seismometer close to the epicenter immediately after the occurrence of the earthquake, predicts the arrival time and seismic intensity of major motions in each location, and notifies them as quickly as possible. By preparing a crisis avoidance system between the time of receiving the earthquake early warning and the occurrence of major motion. It is expected to reduce human and property damage. On the other hand, misinformation and cases where the seismic intensity is unexpectedly small may occur. In such a case, there is a demand to cancel the crisis avoidance system at an early stage and return to the normal state.

  In the field of information processing systems, there is a problem that once the apparatus is stopped, it takes time to restart. For this reason, a method for early recovery in the case of misinformation has been studied. For example, in Patent Document 1, when an earthquake early warning is received, writing to the hard disk of the computer is stopped as a first step, and the main body is kept operating. If there is a main motion that exceeds the threshold, the computer main body is stopped as a second step. Therefore, when the emergency earthquake warning is a false alarm, the main body is restored from the first step of the operating state, and the system can be quickly returned to the normal operating state.

JP 2009-92412 A

  However, the technique of Patent Document 1 has a problem that the information processing system is greatly damaged when an earthquake having a seismic intensity greater than or equal to a threshold value actually occurs. This is because the computer main body remains operating during the first step control. In this case, there is a concern about the damage other than the hard disk due to the earthquake.

  The present invention has been made in view of the above problems, and prevents an information processing system from being destroyed when an earthquake occurs after receiving an earthquake early warning, and allows rapid system recovery when an emergency earthquake early warning is false. It aims to provide a method that can be.

  In order to solve the above problems, an information processing system of the present invention includes a CPU module having a CPU (Central Processing Unit) that performs arithmetic processing and a main memory that is directly accessed by the CPU, and a CPU that supplies power to the CPU module. A module power source, a secondary storage device that the CPU module accesses via a secondary storage device interface, an emergency earthquake warning receiving means for receiving an earthquake early warning, a seismic intensity detecting means for detecting the seismic intensity of the earthquake that has occurred, And an OS startup file for starting up an OS (Operating System) by the secondary storage device, the control unit controlling the CPU module and the secondary storage device based on the earthquake early warning and the seismic intensity. The main memory is stored in the OS startup file. The OS startup file storage means for storing a copy of yl and has.

  The effect of the present invention is that the information processing system is prevented from being destroyed when an earthquake occurs after receiving the earthquake early warning, and the system can be quickly restored when the emergency earthquake early warning is false.

It is a block diagram which shows the 1st Embodiment of this invention. It is a flowchart which shows the operation | movement of the 1st Embodiment of this invention. It is a block diagram which shows the 2nd Embodiment of this invention. It is a block diagram which shows the structure of the OS starting file of the 3rd Embodiment of this invention. It is a flowchart which shows the operation | movement of the 3rd Embodiment of this invention. It is a block diagram which shows the 4th Embodiment of this invention. It is a block diagram which shows the 5th Embodiment of this invention. It is a block diagram which shows the 6th Embodiment of this invention. It is a block diagram which shows the 7th Embodiment of this invention. It is a block diagram which shows the 8th Embodiment of this invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing an information processing system according to the first embodiment of this invention.

  The information processing system 100 according to the present embodiment includes a CPU module 10, a CPU module power supply 20, and a control unit 30 that controls the CPU module 10 and the power supply 20. Moreover, it has an emergency earthquake bulletin receiving means 40, a seismic intensity detection means 50, and a secondary storage device 60. The CPU module 10 is connected to the secondary storage device 60 via the secondary storage device interface 70. Here, CPU is an abbreviation for Central Processing Unit (Central Processing Unit).

  The secondary storage device 60 holds an OS activation file 80 for activating an OS (operation system) operating on the information processing system 100. The OS boot file 80 is a file having a kernel image obtained by compressing the OS kernel, and has a very small size compared to the OS to be executed. Normally, the OS startup file 80 is loaded from the secondary storage device 60 by the boot loader. Then, the hardware is initialized, the kernel image is expanded, the kernel is initialized, and the OS is started.

  The CPU module 10 includes a CPU 11 that performs arithmetic processing and a main memory 12. The main memory 12 has OS boot file storage means 13 for storing the OS boot file 80. The OS boot file 80 stored in the OS boot file storage unit 13 is a copy of the OS boot file 80 held by the secondary storage device 60. When the OS startup file 80 is changed during operation, the OS startup file 80 stored in the OS startup file storage unit 13 is also changed. As described above, since the size of the OS startup file 80 is much smaller than that of the OS, the influence of occupying the capacity of the main memory 12 can be ignored.

  The CPU module power supply 20 supplies power to the CPU module 10.

  The earthquake early warning receiving means 40 receives the earthquake early warning. The earthquake early warning may be delivered from a communication carrier or the like as well as sent directly from the Japan Meteorological Agency.

  The seismic intensity detection means 50 detects the seismic intensity at the place where the information processing system 100 is installed. This seismic intensity is, for example, notified from the Japan Meteorological Agency or the like, or measured with a seismic intensity meter.

  The control unit 30 controls the CPU module 10, the CPU module power supply 20, and the secondary storage device 60 based on the predicted seismic intensity of the earthquake early warning received by the emergency earthquake bulletin receiving unit 40 and the seismic intensity detected by the seismic intensity detection unit 50. To do.

  Next, an operation when the information processing system 100 receives the earthquake early warning will be described. FIG. 2 is a flowchart showing the operation.

  First, the earthquake early warning receiving means 40 receives the earthquake early warning (S1). Next, the control means 30 compares the predicted seismic intensity with a predetermined predicted seismic intensity threshold. The predicted seismic intensity threshold is a predetermined value for determining that an operation to prepare for an earthquake is performed when the predicted seismic intensity is higher than that. When the predicted seismic intensity is less than the predicted seismic intensity threshold (S2_No), the control operation is not performed and the operation state is maintained. On the other hand, when the predicted seismic intensity is equal to or greater than the threshold (S2_Yes), the control unit 30 stops the OS. At this time, the CPU module power supply 20 performs control so as to maintain the supply of power to the CPU module 10 (S3). Then, the secondary storage device 60 is stopped (S4). As described above, by maintaining the power supply to the CPU module 10, the storage of the OS boot file 80 in the OS boot file storage unit 13 is maintained. In many cases, the main memory 12 is a volatile memory, and data is lost when the power is cut off. However, in this embodiment, storage of the OS boot file 80 is maintained in order to maintain power.

  Next, it waits for a predetermined time. If a predetermined time has passed without an earthquake exceeding the predetermined seismic intensity threshold (S5_No), it is considered that there was no earthquake reported by the emergency earthquake warning, and the stopped OS is restarted. At this time, the OS boot file 80 is loaded from the OS boot file storage unit 13 under the control of the control unit 30. That is, the load source of the OS startup file 80 is switched from the normal secondary storage device 60 to the main memory 12, and the OS is restarted (S7). By this operation, the OS can be restarted quickly. The first reason why the restart is quick is that there is no need to wait for the completion of the startup of the secondary storage device 60. When starting up the OS from the secondary storage device 60 as usual, the startup of the secondary storage device 60 must first be completed. However, in general, it takes a considerable time to start up the secondary storage device 60. On the other hand, in this embodiment, since the OS is started from the main memory 12, there is no need to wait for the secondary storage device 60 to start up. The second reason is that the input / output of the main memory 12 generally operates at an overwhelmingly higher speed than the input / output of the secondary storage device 60. In addition, the control unit 30 starts up the secondary storage device 60 in parallel with the restart of the OS (S8).

  On the other hand, if an earthquake greater than the seismic intensity threshold occurs within a predetermined time (S5_Yes), the control means 30 turns off the CPU module power supply 20 and stops the operation of the CPU module 10 (S6).

As described above, according to the present embodiment, it is possible to make the information processing system less susceptible to earthquake damage at the time of receiving the earthquake early warning. This is because the OS is stopped in addition to the secondary storage device. In addition, when the earthquake early warning is a false alarm, the OS can be restarted quickly. This is because there is no need to load the OS startup file from the main memory and wait for the secondary storage device to start up. In addition, the misinformation mentioned here includes the case where there was an earthquake but it was smaller than the expected seismic intensity of the earthquake early warning.
(Second Embodiment)
FIG. 3 is a block diagram showing a second embodiment of the present invention. The details of the control means 30 are shown.

  The control unit 30 includes a secondary storage device power supply control unit 31, an OS stop unit 32, a false alarm determination unit 33, a CPU module power supply control unit 34, and an OS restart control unit 36. The secondary storage device 60 has a secondary storage device power supply 61.

  The secondary storage device power supply control means 31 stops the secondary storage device power supply 61 when the predicted earthquake intensity of the emergency earthquake bulletin received by the emergency earthquake bulletin reception means 40 is equal to or greater than a predetermined predicted earthquake intensity threshold. Control is performed via the secondary storage device interface 70. In FIG. 3, the CPU module 10 and the secondary storage device power supply control unit 31 depict the interface of the storage device 60 for accessing the secondary storage device 60 as an integral unit, but they may be separated from each other.

  The OS stop unit 32 stops the OS operating in the CPU module 10 when the predicted earthquake intensity of the emergency earthquake bulletin received by the emergency earthquake bulletin receiving unit 40 is equal to or greater than the predicted earthquake intensity threshold.

  The misinformation determination means 33 counts the time elapsed since the reception of the earthquake early warning, and if there is no earthquake whose seismic intensity is equal to or greater than a predetermined seismic intensity threshold within a predetermined time, it is determined as misinformation.

  The CPU module power supply control means 34 controls the CPU module power supply as follows based on the earthquake early warning and the seismic intensity detected by the seismic intensity detection means. First, control is not performed for a predetermined time from the earthquake early warning, and the CPU module power supply is kept on. When the seismic intensity detected within a predetermined time from the earthquake early warning is equal to or greater than the seismic intensity threshold, the CPU module power supply 20 is stopped. If it is determined that the earthquake early warning is a false alarm, the CPU module power supply 20 is kept on.

  The OS restart control unit 35 controls to restart the OS using the OS startup file 80 stored in the OS startup file storage unit 13 when the emergency earthquake warning is determined to be erroneous.

  The setting of the predicted seismic intensity threshold and the seismic intensity threshold of the detected earthquake is arbitrary. For example, the predicted seismic intensity threshold may be seismic intensity 5, the seismic intensity threshold may be seismic intensity 4, and the like. Although not shown, a main power supply and wiring for supplying power to each unit are provided.

As described above, according to the present embodiment, the operation of the present invention can be executed without delay.
(Third embodiment)
In the present embodiment, a mechanism for restarting the OS due to an erroneous report after receiving the earthquake early warning and shutting down the OS will be described.

  FIG. 4 is a block diagram showing the configuration of the OS startup file 80. The OS startup file 80 includes a boot section 81, a setup code 82, and a kernel image 83. In the present invention, the OS boot file 80 is stored in the secondary storage device 60 and the OS boot file storage means 13 provided in the main memory 12.

  In the case of normal startup without an earthquake, the boot loader of the secondary storage device loads the boot section 81 at a specific address in the main memory 12 and starts up. The setup code 82 is a program for releasing the kernel image 83. The kernel image 83 is released by the setup code 82, and the startup of the OS is completed.

  In the present invention, when the earthquake early warning is a false report (including the case where the actual seismic intensity is smaller than expected), the OS is restarted from the OS boot file stored in the main memory 12. FIG. 5 is a flowchart showing the operation of the information processing system 100 in that case.

  First, the earthquake early warning receiving means 40 receives the earthquake early warning (S101). If the predicted seismic intensity is greater than or equal to the predicted seismic intensity threshold, the OS stop unit 32 stops the OS (S102). Next, the secondary storage device power supply control means 31 stops the secondary storage device 60 (103). Next, the misinformation determination means 33 determines that the emergency earthquake warning is a misinformation (S104). In response to the erroneous report determination, the information processing system 100 starts to restart. First, the OS restart control unit 35 switches the load source of the OS startup file 80 from the secondary storage device 60 to the OS startup file storage unit 13 in the main memory 12 (S105). Next, the boot loader of the information processing system 100 loads the OS startup file 80 (S106). The information processing system 100 starts to start up the secondary storage device 60 in parallel with the restart of the OS. (S106). Next, the startup of the OS is completed (S107). Next, the startup of the secondary storage device 60 is completed (S108). Thus, the restart of the information processing system 100 is completed.

With the above operation, the OS can be restarted quickly. The startup of the entire system including the secondary storage device is also faster than usual. When the OS is started from the secondary storage device as usual, the system startup time = secondary storage device startup time + OS startup time. On the other hand, according to the present embodiment, system startup time = secondary storage device startup time. In this embodiment, since the OS is restarted only by accessing the main memory, the start-up of the secondary storage device accompanied by a mechanical operation becomes rate-limiting.
(Fourth embodiment)
FIG. 6 is a block diagram showing a fourth embodiment of the present invention. In this embodiment,
The CPU module power supply 20 that supplies power to the CPU module 10 is an uninterruptible power supply 20a. With this configuration, it is possible to more reliably hold the OS boot file 80 in the OS boot file storage unit 13.
(Fifth embodiment)
FIG. 7 is a block diagram showing a fifth embodiment of the present invention. The information processing system 100 according to the present embodiment includes a power supply path switching unit 14 between the CPU module power supply 20, the CPU 11, and the main memory 12. The power supply path switching unit 14 is controlled by the control unit 30.

The power feeding path switching means 14 can turn on and off the power feeding paths supplied to the CPU 11 and the main memory 12 independently. By providing this mechanism, for example, power can be supplied only to the main memory 12 and the CPU 11 can be turned off. In this way, the data in the main memory 12 can be held while saving the power consumed by the CPU 11. That is, the OS boot file 80 can be held. This method is effective, for example, when the main power supply is in a power outage and the OS startup file in the main memory 12 is to be retained urgently by an uninterruptible power supply.
(Sixth embodiment)
FIG. 8 is a block diagram showing a third embodiment of the present invention. In the present embodiment, the secondary storage device 60 has a secondary storage device cache 62. The secondary storage device cache 62 supplements the input / output operation of the low-speed secondary storage device 60, and temporarily stores a part of the data input / output by the secondary storage device 60. The secondary storage device cache 62 is, for example, a small capacity semiconductor memory. The control means 30 has secondary storage device cache data save control means 36. In the present embodiment, when the earthquake early warning is received, the secondary storage device cache data save control means 36 saves the data existing in the secondary storage device cache to a predetermined area of the main memory 12. After the saving process is completed, the OS is stopped and the secondary storage device is stopped.

  If there is no delay until the expected arrival time of the main motion, the saving of the cache data may be omitted and the secondary storage device 60 may be immediately stopped. The threshold of the grace time may be determined according to the specifications of the device to be used, for example, so that the stop of the OS is completed before the main motion is reached.

As described above, according to the present embodiment, data being input / output to / from the secondary storage device 60 can be retained even after the earthquake early warning is received and the secondary storage device 60 is stopped. .
(Seventh embodiment)
FIG. 9 is a block diagram showing a seventh embodiment of the present invention. The information processing system 100 of this embodiment has a seismic intensity meter 51 connected to the seismic intensity detection means 50. As a result, the seismic intensity at the installation location of the information processing system 100 can be accurately measured, and the next operation can be selected more appropriately. The seismic intensity meter 51 may be outside or inside the information processing system 100.
(Eighth embodiment)
In this embodiment, a specific configuration example of the information processing system 100 is shown. FIG. 10 is a block diagram illustrating an information processing system 100a which is an example of a specific configuration.

  A disk array 60a is used as a secondary storage device. As the disk of the disk array 60a, a magnetic disk, an optical disk, a magneto-optical disk, or the like can be used. A magnetic tape, a semiconductor memory, or the like can be used instead of the disk array.

  An SDRAM 12a is used as the main memory. Here, SDRAM refers to Synchronous Dynamic Random Access Memory. When SDRAM is used as the main memory, cost performance is good. DRAM (Dynamic Random Access Memory) and SRAM (Static Random Access Memory) can be used instead of the SDRAM 12a.

  The processor 11 is an x86 processor. The x86 processor is suitable for personal computers, servers, and the like.

  The earthquake early warning receiving means 40 is connected to the emergency earthquake early warning delivery server 300 via the network 200. The earthquake early warning distribution server 300 distributes the earthquake early warning transmitted from the Japan Meteorological Agency 400 to each client. Such emergency earthquake bulletin distribution services are provided by network carrier companies. In addition, highly reliable delivery using a dedicated line, and a service that periodically checks the life and death of a line are also provided.

  An emergency earthquake bulletin information display unit 41 is connected to the emergency earthquake bulletin receiving unit 40. Using the earthquake early warning information display means 41, it is possible to display and utilize detailed information of the emergency earthquake early warning.

  As described above, according to this embodiment, the present invention can be easily implemented using general-purpose parts, devices, and services.

  However, the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

10 CPU module 11 CPU
12 main memory 13 OS startup file storage means 20 CPU module power supply 30 control means 31 secondary storage device power supply control means 32 OS stop means 33 false alarm determination means 34 CPU module power supply control means 35 OS restart control means 36 secondary storage device cache Data evacuation control means 40 Earthquake early warning information receiving means 41 Earthquake early warning information display means 50 Seismic intensity detection means 51 Seismic intensity meter 60 Secondary storage device 61 Secondary storage device power supply 62 Secondary storage device cache 70 Secondary storage device interface 80 OS activation File 81 Boot section 82 Setup code 83 Kernel image 100 Information processing system 200 Network 300 Earthquake early warning distribution server 400 Japan Meteorological Agency

Claims (10)

  A CPU module having a CPU that performs arithmetic processing and a main memory that is directly accessed by the CPU, a CPU module power supply that supplies power to the CPU module, and a secondary storage that the CPU module accesses via a secondary storage device interface An earthquake early warning receiving means for receiving an earthquake early warning, a seismic intensity detecting means for detecting the seismic intensity of an earthquake that has occurred, a CPU module and the secondary storage device based on the emergency earthquake early warning and the seismic intensity. Control means for controlling, wherein the secondary storage device holds an OS boot file for booting the OS, and the main memory has OS boot file storage means for storing a copy of the OS boot file. An information processing system characterized by this.   The control means includes a secondary storage power source control means for stopping the secondary storage device when the predicted seismic intensity of the emergency earthquake warning is equal to or greater than a predetermined value; An OS stop means for stopping the OS when there is an error, and an error report determination means for counting an elapsed time since the reception of the earthquake early warning and determining a false alarm if a seismic intensity exceeding a predetermined value is not detected within a predetermined time. CPU module power supply control means for stopping the power supply of the CPU module when the seismic intensity detected by the seismic intensity detection means within the predetermined time is equal to or greater than a predetermined value, and the OS when the earthquake early warning is a false alarm The information processing system according to claim 1, further comprising: an OS restart control unit that restarts the OS from the OS startup file stored in the startup file storage unit. .   The information processing system according to claim 1, wherein the main memory is a volatile memory.   4. The information processing system according to claim 3, wherein the volatile memory is DRAM or SRAM or a combination thereof.   5. The power supply path switching means for controlling whether or not the power supplied from the CPU module power supply 20 is supplied to the CPU and the main memory, respectively. 5. Information processing system described in 1.   The information processing system according to any one of claims 1 to 5, wherein the CPU module power supply is an uninterruptible power supply having power storage means.   The information processing system according to claim 1, wherein the seismic intensity detection unit is connected to a seismic intensity meter.   The secondary storage device has a secondary storage device cache, and the control means saves data held in the cache to the main memory when the earthquake early warning reception means receives the earthquake early warning 6. The information processing system according to claim 1, further comprising secondary storage device cache data saving means.   CPU that performs arithmetic processing, main memory that is directly accessed by the CPU, secondary storage that is accessed by the CPU module through a secondary storage device interface, emergency earthquake warning receiving means, seismic intensity detection means, and CPU An information processing system control method comprising: an OS operating on a module, wherein the secondary storage device stores an OS startup file for starting the OS, and stores a copy of the OS startup file in the main memory When the earthquake early warning was received by the emergency earthquake early warning receiving means, the OS was stopped when the predicted earthquake intensity of the emergency earthquake early warning was equal to or greater than a predetermined value, the secondary storage device was stopped, and the earthquake intensity detecting means Detects the seismic intensity of the earthquake, counts the time elapsed since the receipt of the emergency earthquake bulletin, and detects the seismic intensity greater than or equal to the predetermined value within the predetermined time If the CPU module power supply is stopped, if no seismic intensity of a predetermined value or more is detected within the predetermined time, it is determined as a false alarm, the CPU module power supply is operated, and the main memory is stored in the main memory. A method of controlling an information processing system, wherein the OS is restarted from an OS startup file.   CPU that performs arithmetic processing, main memory that is directly accessed by the CPU, secondary storage that is accessed by the CPU module through a secondary storage device interface, emergency earthquake warning receiving means, seismic intensity detection means, and CPU A control program for an information processing system having an OS operating in a module, the step of holding an OS startup file for starting the OS in the secondary storage device, and a copy of the OS startup file in the main memory A step of storing; a step of receiving an emergency earthquake bulletin by means of an emergency earthquake bulletin receiving means; a step of stopping the OS when the predicted seismic intensity of the emergency earthquake bulletin is equal to or greater than a predetermined value; and stopping the secondary storage device The step of detecting the seismic intensity of the earthquake generated by the seismic intensity detecting means; and A step of counting the elapsed time since the reception of the earthquake early warning, a step of stopping the CPU module power supply when a seismic intensity of a predetermined value or more is detected within a predetermined time, and a seismic intensity of a predetermined value or more being detected within the predetermined time A step of determining that there is a false alarm if not, a step of operating a power supply of the CPU module, and a step of restarting the OS from the OS boot file stored in the main memory. Control program for information processing system.

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