JP2009211543A - Information processing apparatus, inspection method, inspection program and inspection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information processing apparatus which expedites the inspection processing without delaying the original work by controlling the processing amount allocated to the inspection processing according to the load of original work, an inspection method, an inspection program and an inspection system therefor. <P>SOLUTION: It is configured such that it renews the load conditions of a calculating machine and a storing device sequentially; calculates the time interval in which inspection instructions are given to the storing device based on the load condition and the inspection region where the next consistency inspection is carried out; and repeats the consistency inspection in the inspection region at each time interval. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection method for recording media consistency and the like, and more particularly, an information processing apparatus, an inspection method, an inspection program, and an inspection system that can perform inspection in consideration of the load status of an information processing apparatus that inspects the recording medium About.

  In recent years, the amount of information stored has been increasing due to the progress of information processing technology. In addition, periodic inspection of data recorded on a recording medium such as an HDD (Hard Disk Drive) is indispensable so as to ensure data consistency or prevent loss of important information. This inspection process usually involves reading out all recorded data, and the processing cost of the information processing apparatus becomes so great that it threatens the original service. For this reason, a method has been adopted in which processing is concentrated in a time zone where the processing amount is relatively small such as at night.

However, as the capacity of the recording medium increases, the time required for the consistency check increases, and a situation has arisen in which processing cannot be performed only in a time zone with a light night load. The inspection process should be continued to the end when considering data conservation, but if it shifts to the time zone during which the daytime service load is applied, the impact on the business may be concerned, such as the processing of the original business being delayed. become.

For example, an array disk device has been proposed in which an access request from a host device is suspended and background processing is performed every time a certain amount of data is transferred so that data access is not concentrated (see Patent Document 1). reference).
Japanese Patent Laid-Open No. 5-165577

  Although the inspection process of the accumulated data is important, the time period during which the inspection service is not affected by the original service with a relatively small load such as at night is limited. However, if the inspection process deviates from the original business hours during the daytime, the original business will be hindered.

  The present invention has been made in view of the above problems, and an information processing apparatus that speeds up an inspection process without delaying the original work by controlling the processing capacity assigned to the inspection process according to the load of the original work. An object is to provide an inspection method, an inspection program, and an inspection system.

With the information processing apparatus according to the present invention,
An information processing apparatus capable of reading data stored in a storage device, the load measuring means for measuring the load status of the information processing apparatus, and the load status to the load measuring means in order to update the load status. Load update means for instructing measurement, and consistency check means for changing parameters for the consistency check in accordance with the load status at the time of consistency check of data stored in the storage device An information processing apparatus characterized by this is provided.

Moreover, the inspection method according to the present invention includes:
An inspection method for checking the consistency of data stored in a storage device by a computer, wherein the computer sequentially measures the load status of the computer and the storage device, and performs the consistency check of the storage device. A time interval for instructing the storage device to inspect the storage device based on the load status and a test range for the next consistency check are calculated for the range, and a consistency check for the test range is performed for each time interval. It is characterized by being repeated.

Moreover, if it is an inspection program according to the present invention,
An inspection program for inspecting the consistency of data stored in a storage device that can be executed by a computer, the step of sequentially measuring the load status of the computer and the storage device, and the consistency check of the storage device A step of calculating a time interval for instructing the storage device to inspect based on the load status and a test range for the next consistency check for all ranges, and consistency of the inspection range for each time interval There is provided an inspection program comprising a step of performing an inspection and a step of repeating.

In addition, with the inspection system according to the present invention,
An inspection system comprising a storage device and a computer capable of reading data stored in the storage device, the load measuring means for measuring the load status of the storage device and the computer, and for updating the load status, Load updating means for sequentially instructing the load measuring means to measure the load status, and at the time of consistency check, the parameters of the consistency check are changed according to the load status and stored in the storage device There is provided an inspection system comprising: consistency inspection means for performing data consistency inspection.

There is provided an information processing apparatus, an inspection method, an inspection program, and an inspection system that speed up the inspection process without delaying the original operation by controlling the processing capacity allocated to the inspection process according to the load of the original operation.

(This embodiment)
FIG. 1 is a diagram illustrating an example of an inspection system according to the present embodiment. In FIG. 1, a server 100, a disk array 101, a redundant configuration HDD 102, and a non-redundant configuration HDD 103 are shown.

  The server 100 is a server device provided with a large amount of storage media, for example. It has a function of receiving a data read or write request from an external terminal and executing the requested processing. Although not shown, the user can give a desired instruction to the server 100 via an external terminal or the like.

  The disk array 101 is a storage device including a plurality of storage media such as a magnetic disk device (HDD). In this embodiment, the disk array 101 is connected to the server 100 with a cable, and data is read and written under the control of the server 100 side. In the present embodiment, the case is separate from the server 100, but may be included in the case of the server 100.

The redundantly configured HDD 102 is generally configured with a RAID (Redundant Array of Inexpensive Disks). In particular, this indicates a configuration having a redundant RAID configuration in which stored data is compensated even when a failure occurs in some HDDs of the redundant configuration HDD 102.

The non-redundant HDD 103 generally has a RAID configuration, but the redundant HDD 102 has a different RAID configuration and has no redundancy. In this case, if a failure occurs in some of the HDDs in the non-redundant configuration HDD 103, the stored data cannot be compensated. These have a RAID configuration for the purpose of another effect such as high-speed access.

As described above, the disk array 101 can be freely combined with a plurality of HDDs and can be configured to be either redundant or non-redundant. This is the case of this embodiment, and it is not always necessary to use a disk array in which redundant or non-redundant configurations are mixed.

  FIG. 2 is a diagram illustrating an example of a block configuration diagram of the inspection system according to the present embodiment. FIG. 2 shows a CPU 200, a main memory 201, a bus controller 202, an HDD 203, and an HDD controller 204.

  The CPU 200 is a central processing unit and controls the entire server 100. It also has a function of executing a program and executing a predetermined process corresponding to the program.

  The main memory 201 is composed of a semiconductor memory, and is used as an area for storing programs and data when the CPU 200 processes the programs.

  The bus controller 202 has a function of controlling a bus for transmitting information between the components of the server 100. The instruction from the CPU 200 reads / writes data in the main memory 201 via the bus or gives an instruction to other devices.

  HDD 203 refers to a hard disk drive device. Here, programs processed by the CPU 200, temporary files, and other nonvolatile data can be stored. Although the present embodiment is intended for one having a plurality of HDDs, it may be constituted by another type of storage medium such as a large-capacity semiconductor memory. It only needs to function as a predetermined storage device.

  The HDD controller 204 has a function of providing an interface between the CPU 200 and the HDD 203. When the CPU 200 reads / writes data from / to the HDD 203, it is implemented so that an instruction is once given to the HDD controller 204 and a target process is performed from the plurality of HDDs 203 in accordance with this instruction.

  FIG. 3 is a diagram illustrating an example of a functional block diagram of the inspection system according to the present embodiment. FIG. 3 shows a consistency check requesting unit 300, a system load updating unit 301, a system load measuring unit 302, a consistency checking unit 303, and an HDD control unit 304.

  The consistency check request unit 300 has a function of instructing to check whether or not the consistency of the redundant configuration HDD 102 and the non-redundant configuration HDD 103 configured in the disk array 101 is maintained. Specifically, an interface function for requesting the server 100 to check the consistency of the disk array 101 periodically or when there is a suspicion of failure is provided to an administrator who operates and manages the server 100 and the disk array 101. . When performing a consistency check, the time during which the inspection is performed can be set in advance as a consistency check schedule. This is because if the consistency check is performed at a time when the load of the server 100 or the disk array 101 is high, traffic such as CPU and bus due to the check may be superimposed, which may hinder the user service. Usually, the schedule is often set so that the consistency check is performed intensively in the time zone such as at night when the service is not provided. In addition to the time control based on this schedule, it is possible to give information such as which HDD range of the disk array 101 is to be inspected and how much priority is assigned to the consistency inspection.

  The priority here refers to the load that is spent on the consistency check and the load that is spent on the processing of the execution schedule that is the original service. Increasing the priority means more ability for the consistency check. Means assigning. As the system load measured as the load, the CPU load and the access load of the HDD 203 to be inspected can be considered. In any case, a finite design upper limit value is assumed, and all applications including consistency check share this finite processing capacity in proportion.

  The system load update unit 301 has a function of instructing the system load of the server 100 and the disk array 101 to be updated to the current status value. This is because the system load status of the server 100 and the disk array 101 changes every moment, and if the load status is not updated in a timely manner, there is a possibility of affecting the execution schedule processing. By providing this function, the consistency check can be continued at a more appropriate rate.

  The system load measurement unit 302 has a function of measuring the system load. Specifically, the load of the CPU 200 and the load state of the HDD 203 are measured. The measured value is sent to the consistency checking unit 303. Here, it is assumed that the load of the CPU 200 and the HDD 203 is measured, but the load at each point such as the bus controller 202, the HDD controller 204, or the disk array 101 may be used as a measured value. If the load of the bottleneck portion can be used, a more appropriate load ratio can be set.

  The consistency checking unit 303 has a function of checking the consistency of the redundant configuration HDD 102 configured by the HDD 203 and the non-redundant configuration HDD 103. When executing the consistency check, an appropriate inspection timing that does not place a burden on the execution schedule is selected based on the load status measured by the system load measuring unit 302 and the request from the consistency check requesting unit 300. Is done.

  The HDD control unit 304 has a function of controlling the HDD 203. For example, it is often mounted on the server 100 in the form of an HDD driver or the like.

  FIG. 5 is a diagram illustrating an example of an inspection flow according to the present embodiment.

First, the server 100 determines whether or not it is time to perform a consistency check in the consistency check schedule set in the consistency check request unit 300 (step S01). If it is outside the inspection time (No), the consistency inspection is not performed and the process ends.

  If it is the time set in the consistency check schedule (Yes), the system load is then measured (step S02). Next, based on the result, an inspection request parameter suitable for the load situation is determined (step S03). The inspection request parameter here is a parameter instructed to the consistency inspection unit 303. Specifically, the update interval of the system load, the time interval of the inspection requested to the HDD control unit 304, the inspection start address, The size of the inspection range and the priority of the inspection can be considered. When the load associated with execution schedule processing is high, each value is set to a wide time interval, a small size, and a low priority. Conversely, if there is room in the system load, the consistency check is terminated early. The time interval is set short, the size is wide, and the priority is set high. The priority at this time means that it is allowed to spend the processing capacity for the consistency check up to the processing capacity represented by the degree.

  Next, at the head of the loop, it is determined whether or not the inspection of the entire desired consistency inspection range has been completed (step S04). If all the ranges are over (Yes), the flow is finished.

  When the inspection is in progress (No), the system load update unit 301 determines whether or not the update time of the system load has elapsed (step S05).

When it is determined that the update time has elapsed (Yes), the system load update unit 301 instructs the system load measurement unit 302 to remeasure the current system load (step S06), and the measurement result is sent to the consistency check unit 303. input. Receiving this result, the consistency checking unit 303 calculates the inspection request parameter again (step S07) and reflects it in the request to the HDD control unit 304.

  Next, the consistency inspection unit 303 determines whether or not the time indicated by the inspection time interval has elapsed (step S08). If the time has not elapsed (No), the next processing is waited until that time (step S09).

  After the inspection time interval elapses, the consistency inspection unit 303 issues a consistency inspection request to the HDD control unit 304 according to the inspection request parameter recalculated from the recent system load status (step S10).

  If comprised in this way, it will become possible to control the processing amount allocated to a test | inspection process according to the load of an original operation | work, and an inspection process can be speeded up, without delaying an original operation | work.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

It is a figure showing an example of an inspection system concerning this embodiment. It is a figure which shows an example of the block block diagram of the test | inspection system concerning this embodiment. It is a figure which shows an example of the functional block diagram of the test | inspection system concerning this embodiment. It is a figure which shows an example of the test | inspection flow concerning this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Server, 101 ... Disk array, 102 ... Redundant configuration HDD, 103 ... Non-redundant configuration HDD, 200 ... CPU, 201 ... Main memory, 202 ... Bus controller, 203... HDD, 204... HDD controller, 300... Consistency check request unit, 301... System load update unit, 302. 304... HDD control unit

Claims (11)

An information processing apparatus capable of reading data stored in a storage device,
Load measuring means for measuring the load status of the information processing apparatus;
Load update means for instructing the load measurement means to sequentially measure the load situation in order to update the load situation;
Consistency checking means for changing parameters for the consistency check in accordance with the load status at the time of consistency check of data stored in the storage device;
An information processing apparatus comprising:   The information processing apparatus according to claim 1, wherein the load measuring unit measures, as a load state, a value based on a processing amount being processed by the information processing apparatus and an input / output processing amount of the storage device. The parameters include a time interval for instructing the storage device to inspect, and an inspection range for the next consistency check,
The consistency inspection unit obtains the time interval and the inspection range based on the load state, and repeatedly performs the consistency inspection of the inspection range for each time interval for all ranges to be subjected to the consistency inspection. The information processing apparatus according to claim 1.   The consistency checking unit obtains a priority indicating a ratio of the capacity of the information processing apparatus allocated to the consistency check based on the load status, and performs the consistency check with the priority set as an upper limit. The information processing apparatus according to claim 1. An inspection method for checking the consistency of data stored in a storage device by a computer,
The calculator is
Sequentially measuring the load status of the computer and the storage device;
For the entire range of consistency check of the storage device,
While calculating the time interval for instructing the storage device to inspect based on the load status and the inspection range for the next consistency inspection,
An inspection method, wherein the consistency inspection of the inspection range is repeatedly performed at each time interval.   Based on the load status, the computer obtains a priority indicating a ratio to be assigned to the consistency check in the capacity amount of the computer, and calculates the time interval and the inspection range so that the priority becomes an upper limit. The inspection method according to claim 5, wherein the inspection method is characterized. An inspection program for inspecting the consistency of data stored in a storage device that can be executed by a computer,
Sequentially measuring the load status of the computer and the storage device;
For the entire range of consistency check of the storage device,
Calculating a time interval for instructing the storage device to inspect based on the load status and an inspection range for the next consistency check; and
Performing a consistency check of the inspection range at each time interval;
The inspection program characterized by having the step which repeats.   The calculating step obtains a priority indicating a ratio to be assigned to the consistency check in the capacity amount of the computer based on the load situation, and calculates the time interval and the inspection range so that the priority becomes an upper limit. The inspection program according to claim 7. An inspection system comprising a storage device and a computer capable of reading data stored in the storage device,
Load measuring means for measuring the load status of the storage device and the computer;
Load update means for instructing the load measurement means to sequentially measure the load situation in order to update the load situation;
Consistency checking means for performing a consistency check of data stored in the storage device while changing parameters of the consistency check in accordance with the load state at the time of the consistency check;
An inspection system comprising: The parameters include a time interval for instructing the storage device to inspect, and an inspection range for the next consistency check,
The consistency inspection unit obtains the time interval and the inspection range based on the load state, and repeatedly performs the consistency inspection of the inspection range for each time interval for all ranges to be subjected to the consistency inspection. The inspection system according to claim 1.   The consistency check means obtains a priority indicating a ratio of the capacity capacity of the storage device and the computer allocated to the consistency check based on the load status, and performs the consistency check with the priority as an upper limit. The inspection system according to claim 9 or 10, characterized in that

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