JP2017182385A - Information processing device, information processing method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that disconnection processing is sometimes not appropriate depending on a failure state of a disk device and an information processing device configuration in the case that a failure occurs in the disk device.SOLUTION: An information processing device includes a disk device, detection means for detecting a predetermined kind of monitoring target I/O (Input/Output) information in I/O information of the disk device, failure determination means for measuring the number of pieces of monitoring target I/O information detected by the detection means, and determining the existence/nonexistence of a failure of the disk device on the basis of the measurement result, and disconnection control means for disconnecting the disk device on the basis of the determination result by the failure determination means.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing apparatus, an information processing method, and a program, and more particularly, to an information processing apparatus, an information processing method, and a program for detecting a disk failure.

  In order to improve availability and reliability, information processing apparatuses having a redundant configuration in disk devices such as hard disk drives and solid state drives are known.

  For example, Patent Literature 1 includes a first physical storage device that can be in a power saving state such as an HDD (Hard Disk Drive) and a second physical storage device such as an SSD (Solid State Drive). A storage system is described. According to Patent Document 1, a first physical storage device group including one or more first physical storage devices constitutes a logical storage device including a plurality of logical areas. Further, a second physical storage device group configured by one or more second physical storage devices forms a pool configured by a plurality of pool areas. One or more pool areas in the pool correspond to a part of the plurality of logical areas. According to Patent Document 1, in such a configuration, when an I / O for a logical area is received, it is confirmed whether or not a pool area corresponding to the logical area exists in the pool. If the corresponding pool area does not exist and the first physical storage device group is in the power saving state, the power saving state is canceled and I / O is performed on the logical area. On the other hand, if the corresponding pool area exists, I / O is performed on the pool area corresponding to the I / O destination logical area without releasing the power saving state of the first physical storage device group. According to Patent Literature 1, such a configuration can reduce the frequency of releasing the power saving state of the first physical storage device.

  Further, for example, Patent Document 2 stores a disk array device having a storage device that stores system information and a management unit that manages a storage area of the storage device by dividing it into a system area and a data area. According to Patent Document 2, the management unit performs a verify process on the data area of the storage device at the first period, and performs a verify process on the system area at a second period that is faster than the first period. To do. According to Patent Document 2, the reliability can be improved by configuring in this way.

JP 2011-107857 A JP 2007-066588 A

  When a failure occurs in a disk device in an information processing device having a redundant configuration as described in Patent Documents 1 and 2, the storage controller performs the disk device disconnection process and maintains the operation of the information processing device. It will be. However, depending on the content of the failure of the disk device, an appropriate disconnection process by the storage controller may not be performed. Further, there has been a problem that the behavior of the detachment process by the storage controller differs for each OS (Operating System) and storage controller.

  As described above, when a failure occurs in the disk device, there is a problem that an appropriate disconnection process may not be performed depending on the failure state of the disk device and the information processing device configuration.

  Accordingly, an object of the present invention is to provide an information processing apparatus that solves the problem that, when a failure occurs in a disk device, depending on the failure state of the disk device and the information processing device configuration, an appropriate disconnection process may not be performed. There is to do.

In order to achieve this object, an information processing apparatus according to an aspect of the present invention
A disk unit;
Detecting means for detecting a predetermined type of monitoring target I / O information out of I / O (Input / Output) information of the disk device;
Failure determination means for measuring the number of monitoring target I / O information detected by the detection means, and determining the presence or absence of a failure of the disk device based on the measurement result;
Decoupling control means for detaching the disk device based on a determination result by the failure determining means,
It has a configuration of having

In addition, an information processing method according to another aspect of the present invention includes
Among the I / O (Input / Output) information of the disk device, a predetermined type of monitored I / O information is detected,
The number of detected monitoring target I / O information is measured, and the presence or absence of a failure of the disk device is determined based on the measurement result
A configuration is adopted in which the disk device is disconnected based on the determination result.

Moreover, the program which is the other form of this invention is:
In an information processing apparatus having a disk device,
Detecting means for detecting a predetermined type of monitoring target I / O information out of I / O (Input / Output) information of the disk device;
Failure determination means for measuring the number of monitoring target I / O information detected by the detection means, and determining the presence or absence of a failure of the disk device based on the measurement result;
Decoupling control means for detaching the disk device based on a determination result by the failure determining means,
It is a program for realizing.

  By configuring as described above, the present invention solves the problem that when a failure occurs in a disk device, depending on the failure state of the disk device and the configuration of the information processing device, an appropriate disconnection process may not be performed. It is possible to provide an information processing apparatus.

It is a block diagram which shows an example of a structure of the information processing apparatus which concerns on the 1st Embodiment of this invention. It is a block diagram which shows an example of a structure of the I / O monitoring means shown in FIG. It is a block diagram which shows an example of a structure of the failure judgment means shown in FIG. It is a flowchart which shows an example of operation | movement of the information processing apparatus which concerns on the 1st Embodiment of this invention. It is a flowchart which shows an example of the operation | movement when the information processing apparatus which concerns on the 1st Embodiment of this invention decrements a counter. It is a schematic block diagram which shows an example of a structure of the information processing apparatus which concerns on the 2nd Embodiment of this invention.

[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram illustrating an example of the configuration of the information processing apparatus 1. FIG. 2 is a block diagram showing an example of the configuration of the I / O (Input / Output) monitoring means 13. FIG. 3 is a block diagram illustrating an example of the configuration of the failure determination unit 14. FIG. 4 is a flowchart illustrating an example of the operation of the information processing apparatus 1. FIG. 5 is a flowchart showing an example of the operation when the information processing apparatus 1 decrements the counter (1 subtraction).

  In the first embodiment of the present invention, an information processing apparatus 1 having a disk device 16 will be described. As will be described later, the information processing apparatus 1 according to the present embodiment measures the number of issued monitoring target I / O information among the I / O information of the disk device 16. Then, the information processing apparatus 1 determines whether there is a failure in the disk device 16 based on the measurement result. Further, when it is determined that a failure has occurred in the disk device 16, the information processing apparatus 1 disconnects the disk device 16.

  Referring to FIG. 1, an information processing apparatus 1 according to this embodiment includes a CPU 11 (Central Processing Unit), a storage controller 12, an I / O monitoring unit 13 (detection unit), a failure determination unit 14, and a power supply control unit. 15 (detaching means) and a disk device 16.

  The CPU 11 has an I / O controller 111 inside. A storage controller 12 is connected under the I / O controller 111. The CPU 11 issues I / O information to the disk device 16 via the I / O controller 111 and the storage controller 12.

  The storage controller 12 issues I / O information with the disk device 16 based on an instruction from the I / O controller 111 of the CPU 11. For example, small computer system interface (SCSI) I / O information is issued between the storage controller 12 and the disk device 16.

  The I / O monitoring unit 13 is provided outside the storage controller 12 and stores I / O information (input / output information (input information / output information)) issued between the storage controller 12 and the disk device 16. Among them, a predetermined type of monitoring target I / O information (monitoring target information) is detected. When the monitoring target I / O information is detected, the I / O monitoring unit 13 notifies the failure determination unit 14 that the monitoring target I / O information has been detected.

  FIG. 2 shows an example of the configuration of the I / O monitoring unit 13. Referring to FIG. 2, the I / O monitoring unit 13 includes, for example, an I / O detection unit 131, an I / O determination unit 132, and monitoring I / O information 133.

  The I / O detection unit 131 and the I / O determination unit 132 are realized by, for example, an arithmetic device (not shown) executing a program stored in a storage device (not shown). The monitoring I / O information 133 is stored in a storage device (not shown) such as a memory.

  The I / O detection unit 131 detects I / O information issued between the storage controller 12 and the disk device 16. The I / O detection unit 131 notifies the I / O determination unit 132 of the detected I / O information.

  The I / O determination unit 132 refers to the monitoring I / O information 133 to determine whether the I / O information detected by the I / O detection unit 131 is monitoring target I / O information. For example, if the I / O information detected by the I / O detection unit 131 matches the monitoring target I / O information indicated by the monitoring target I / O information 133, the I / O determination unit 132 Determines that the monitoring target I / O information is detected. The I / O determination unit 132 notifies the failure determination unit 14 that the I / O detection unit 131 has detected the monitoring target I / O information. On the other hand, if the I / O information detected by the I / O detection unit 131 does not match the monitoring target I / O information indicated by the monitoring target I / O information 133, the I / O determination unit 132 determines that the failure determination unit 14 Do not notify for.

  The monitoring I / O information 133 indicates monitoring target I / O information to be monitored by the I / O monitoring unit 13. The monitoring target I / O information indicated by the monitoring I / O information 133 is, for example, I / O information issued when a failure occurs in the disk device 16.

  Specifically, the monitoring target I / O information indicated by the monitoring I / O information 133 is related to a failure such as a “SCSI bus reset command” for resetting the state of the SCSI bus and the SCSI device, for example. This is a SCSI command. The monitoring target I / O information indicated by the monitoring I / O information 133 is, for example, “Media Error (Media Error) which is an error code (sense code) issued by the disk device 16 when a problem occurs in the disk device 16. ) ”. As described above, the monitoring I / O information 133 indicates the SCSI command and the sense code (error code), which are issued accompanying the HDD failure, as the monitoring target I / O information.

  Note that the monitoring I / O information 133 may indicate one or both of the monitoring target I / O information. The monitoring I / O information 133 may indicate input / output information such as commands and codes other than those exemplified above as monitoring target I / O information.

  The I / O monitoring unit 13 has the above-described configuration, for example.

  The failure determination unit 14 is provided outside the storage controller 12, and the number of monitoring target I / O information detected by the I / O monitoring unit 13 is determined for each disk device 16 or monitoring target I / O information, for example. measure. Further, the failure determination unit 14 decrements the number of monitoring target I / O information being measured according to the detection status (for example, the passage of time).

  Further, the failure determination unit 14 determines the presence or absence of a failure in the disk device 16 based on the measurement result of the monitoring target I / O information. Then, the failure determination unit 14 disconnects the disk device 16 based on the determination result.

  FIG. 3 is an example of the configuration of the failure determination means 14. Referring to FIG. 3, the failure determination unit 14 includes, for example, a disconnect control unit 141, a disconnect determination unit 142, a timer 143, a counter 144, a timer initial value 145, a counter threshold value 146, and a timer control unit 147. Counter control unit 148.

  Each unit in the above configuration is realized by an arithmetic device (not shown) executing a program stored in a storage device (not shown). The timer initial value 145 and the counter threshold value 146 are stored in a storage device (not shown) such as a memory.

  The disconnection control unit 141 receives a notification from the disconnection determination unit 142 so as to send an instruction to disconnect the disk device 16 to the power supply control unit 15. Then, the detachment control unit 141 instructs the power supply control unit 15 to stop supplying power to the target disk device 16 according to the received notification.

  The separation determination unit 142 compares the value of the counter 144 with the counter threshold value 146. Then, the separation determination unit 142 determines whether there is a failure in the disk device 16 based on the comparison result. For example, the separation determination unit 142 determines that a failure has occurred in the disk device 16 when the value of the counter 144 exceeds the counter threshold value 146.

  In addition, when the disconnection determination unit 142 determines that a failure has occurred in the disk device 16, the disconnection control unit 142 sends an instruction to the power supply control unit 15 to disconnect the disk device 16 in which the failure has occurred. 141. As described above, the detachment control unit 141 instructs the power supply control unit 15 in response to the notification from the detachment determination unit 142.

  The timer 143 is controlled by the timer control unit 147. As will be described later, the value set in the timer 143 is decremented over time.

  The counter 144 is controlled by the counter control unit 148. As will be described later, the value of the counter 144 is incremented (added by 1) every time the I / O monitoring unit 13 detects monitoring target I / O information. Further, the value of the counter 144 is decremented every time the value of the timer 143 becomes zero.

  The timer initial value 145 is a value set in the timer 143 by the timer control unit 147. The value of the timer initial value 145 is an arbitrary value, and is determined in advance, for example.

  The counter threshold value 146 is compared with the value of the counter 144 by the separation determination unit 142 as described above. The value of the counter threshold value 146 is an arbitrary value, and is determined in advance, for example.

  The timer control unit 147 controls the timer 143. Further, the timer control unit 147 instructs the counter control unit 148 to decrement the value of the counter 144 according to the control result of the timer 143.

  Specifically, for example, when the value of the counter 144 is 1 or more, the timer control unit 147 sets the value indicated by the timer initial value 145 in the timer 143. Subsequently, the timer control unit 147 decrements the value indicated by the timer 143 over time. For example, the timer control unit 147 decrements the value indicated by the timer 143 so that 1 is subtracted per second. Thereafter, the timer control unit 147 confirms whether or not the timer 143 has reached zero. When the timer 143 reaches 0, the timer control unit 147 notifies the counter control unit 148 to decrement the value of the counter 144. Further, when the value of the counter 144 is 1 or more even when the counter 144 is decremented, the timer control unit 147 sets the timer initial value 145 in the timer 143 again. Thereafter, the timer control unit 147 decrements the value indicated by the timer 143 again. In this way, the timer control unit 147 repeats control on the timer 143 as necessary.

  The counter control unit 148 controls the counter 144 according to the notification from the I / O determination unit 132 and the timer control unit 147.

  Specifically, for example, when receiving a notification that the monitoring target I / O information is detected from the I / O determination unit 132, the counter control unit 148 increments the value of the counter 144 in response to the notification. For example, when the counter control unit 148 receives a notification to decrement the counter 144 from the timer control unit 147, the counter control unit 148 decrements the value of the counter 144 in response to the notification. As described above, the counter control unit 148 increments or decrements the value of the counter 144 in response to a notification from the I / O determination unit 132 or the timer control unit 147. Note that the counter control unit 148 controls the counter 144 so that the value of the counter 144 does not fall below zero.

  The failure determination unit 14 has the above-described configuration, for example.

  The power control unit 15 disconnects the disk device 16 based on the determination result by the failure determination unit 14. Specifically, the power control unit 15 receives an instruction to disconnect the disk device 16 from the disconnect control unit 141. Then, the power control unit 15 stops the supply of power to the target disk device 16 in accordance with an instruction from the disconnection control unit 141. Under the control of the power control means 15, the supply of power to the disk device 16 is stopped, and the disk device 16 is disconnected.

  The disk device 16 is an HDD (Hard Disk Drive) or the like. The disk device 16 operates when power is supplied from a power source (not shown). As described above, the disk device 16 issues I / O information with the storage controller 12. Further, when a failure occurs in the disk device 16, as described above, the supply of power to the disk device 16 is stopped by the power supply control means 15.

  The information processing apparatus 1 has such a configuration, for example. Subsequently, an example of the operation of the information processing apparatus 1 will be described with reference to FIGS. 4 and 5.

  Referring to FIG. 4, the storage controller 12 or the disk device 16 issues I / O information (step S101).

  Then, the I / O detection unit 131 of the I / O monitoring unit 13 detects I / O information issued by the storage controller 12 or the disk device 16 (step S201). Subsequently, the I / O determination unit 132 of the I / O monitoring unit 13 refers to the monitoring I / O information 133 and the I / O information detected by the I / O detection unit 131 is the monitoring target I / O information. It is determined whether or not there is (step S202).

  If the I / O information detected by the I / O detection unit 131 is not the monitoring target I / O information (No in step S202), the process is terminated. On the other hand, when the I / O information detected by the I / O detection unit 131 is the monitoring target I / O information (step S202, Yes), the I / O determination unit 132 has detected the monitoring target I / O information. This is notified to the failure determination means 14.

  The failure determination unit 14 receives a notification from the I / O determination unit 132. Then, the counter control unit 148 of the failure determination unit 14 increments the counter 144 in response to the notification (step S301).

  The separation determination unit 142 monitors the counter 144, and determines whether or not the value of the counter 144 has exceeded the increment result counter threshold value 146 (step S302). As a result of the increment, if the value of the counter 144 is equal to or less than the counter threshold value 146 (No in step S302), the process is terminated. On the other hand, as a result of the increment, when the value of the counter 144 exceeds the counter threshold value 146 (Yes in step S302), the detachment determination unit 142 determines that a failure has occurred in the disk device 16, and the failure has occurred. The disconnection control unit 141 is notified to send an instruction to disconnect the existing disk device 16. The detachment control unit 141 instructs the power supply control unit 15 to detach the disk device 16 in response to the notification from the detachment determination unit 142 (step S303).

  The power supply control unit 15 stops the supply of power to the target disk device 16 in response to an instruction from the disconnection control unit 141 (step S401). As a result, the disk device 16 is disconnected.

  When the value of the counter 144 is 1 or more, the timer control unit 147 operates and instructs the counter control unit 148 to decrement the value of the counter 144 according to the value of the timer 143. Next, an example of the operation of the timer control unit 147 will be described with reference to FIG.

  Referring to FIG. 5, the timer control unit 147 sets a value indicated by the timer initial value 145 in the timer 143 (step S501).

  The timer control unit 147 decrements the value indicated by the timer 143 over time (step S502). Then, the timer control unit 147 confirms whether or not the timer 143 has reached 0 (step S503).

  When the value of the timer is not 0 (that is, when it is 1 or more) (step S503, No), the timer control unit 147 proceeds to the process of step S502 and decrements the value indicated by the timer 143 again. . On the other hand, when the value of the timer is 0 (step S503, Yes), the timer control unit 147 notifies the counter control unit 148 to decrement the value of the counter 144 (step S504). As a result, the counter control unit 148 decrements the value indicated by the counter 144.

  When the value indicated by the counter becomes 0 due to the decrement of the value indicated by the counter 144 (step S505, Yes), the timer control unit 147 ends the process. On the other hand, if the value indicated by the counter does not become 0 even when the value indicated by the counter 144 is decremented (No at Step S505), the timer control unit 147 proceeds to the process at Step S501 and again returns to the timer 143. A value indicated by the timer initial value 145 is set.

  The above is an example of the operation of the timer control unit 147.

  As described above, the information processing apparatus 1 according to this embodiment includes the I / O monitoring unit 13, the failure determination unit 14, and the power supply control unit 15. With such a configuration, the I / O monitoring unit 13 can detect the monitoring target I / O information among the I / O information of the disk device 16. Further, the failure determination unit 14 can determine whether a failure has occurred in the disk device 16 based on the detection result of the I / O monitoring unit 13. As a result, the power control unit 15 can disconnect the disk device 16 in which the failure has occurred. That is, according to the above configuration, when a failure occurs in the disk device, it is possible to solve the problem that an appropriate disconnection process may not be performed depending on the failure state of the disk device and the information processing device configuration.

  According to the above configuration, it is possible to realize the separation when the disk device 16 can not be properly separated, which has been difficult in the past, by simply adding a simple configuration and its control. Further, according to the above configuration, the disk device 16 can be appropriately disconnected without depending on the OS or the storage controller 12.

  Although FIG. 1 shows the case where the information processing apparatus 1 has one CPU 11, the number of CPUs 11 included in the information processing apparatus 1 is not limited to one. The information processing apparatus 1 can have two or more CPUs 11. 1 shows an example in which the I / O controller 111 is built in the CPU 11, the I / O controller 111 may exist outside the CPU 11.

  Further, in FIG. 1, one storage controller 12 and one disk device 16 are included, but the information processing device 1 can include two or more storage controllers 12 and disk devices 16. Further, the disk device 16 may be externally connected to the information processing device 1.

  In FIG. 3, the timer 143, the counter 144, the timer initial value 145, the counter threshold 146, the timer control unit 147, and the counter control unit 148 are provided. However, the number of each configuration included in the failure determination unit 14 is not limited to one. The failure determination unit 14 includes, for example, two or more timers 143, a counter 144, a timer initial value 145, a counter threshold value 146, a timer control unit 147, and a counter control unit 148, depending on the number of I / O information to be monitored. Can have. Further, the failure determination means 14 can have the above configuration for each disk device 16.

[Second Embodiment]
Next, a second embodiment will be described with reference to FIG. In the second embodiment, an outline of the configuration of the information processing apparatus 2 will be described.

  Referring to FIG. 6, the information processing apparatus 2 according to this embodiment includes a disk device 21, a detection unit 22, a failure determination unit 23, and a separation unit 24.

  The detection means 22 detects a predetermined type of monitoring target I / O information from the I / O (Input / Output) information of the disk device 21.

  The failure determination unit 23 measures the number of monitoring target I / O information detected by the detection unit 22, and determines whether there is a failure in the disk device 21 based on the measurement result.

  The disconnecting unit 24 disconnects the disk device 21 based on the determination result by the failure determining unit 23.

  As described above, the information processing apparatus 2 according to this embodiment includes the detection unit 22, the failure determination unit 23, and the separation unit 24. With this configuration, the detection unit 22 can detect monitoring target I / O information in the I / O information of the disk device 21. Further, the failure determination unit 23 can determine whether or not a failure has occurred in the disk device 21 based on the detection result of the detection unit 22. As a result, the detaching unit 24 can detach the disk device 21 in which the failure has occurred. That is, according to the above configuration, when a failure occurs in the disk device, it is possible to solve the problem that an appropriate disconnection process may not be performed depending on the failure state of the disk device and the information processing device configuration.

  The information processing apparatus 2 can be realized by incorporating a predetermined program into the information processing apparatus 2. Specifically, a program according to another aspect of the present invention allows a data processing apparatus having a disk device to receive a predetermined type of monitoring target I / O from I / O (Input / Output) information of the disk device. A detection unit that detects information, a failure determination unit that measures the number of monitoring target I / O information detected by the detection unit, and determines whether there is a failure in the disk device based on the measurement result, and a failure determination unit This is a program for realizing detachment control means for detaching a disk device based on a determination result.

  In addition, the information processing method executed by operating the information processing apparatus 2 described above detects a predetermined type of monitoring target I / O information from I / O (Input / Output) information of the disk device. In this method, the number of detected monitoring target I / O information is measured, the presence / absence of a failure of the disk device is determined based on the measurement result, and the disk device is disconnected based on the determination result.

  Even the invention of the program or the information processing method having the above-described configuration can achieve the above-described object of the present invention because it has the same operation as the information processing apparatus 2.

<Appendix>
Part or all of the above-described embodiment can be described as in the following supplementary notes. The outline of the information processing apparatus and the like in the present invention will be described below. However, the present invention is not limited to the following configuration.

(Appendix 1)
A disk unit;
Detecting means for detecting a predetermined type of monitoring target I / O information out of I / O (Input / Output) information of the disk device;
Failure determination means for measuring the number of monitoring target I / O information detected by the detection means, and determining the presence or absence of a failure of the disk device based on the measurement result;
Detaching means for detaching the disk device based on a determination result by the failure determining means;
An information processing apparatus.

(Appendix 2)
An information processing apparatus according to attachment 1, wherein
The monitoring target I / O information detected by the detection means is I / O information issued when a failure occurs in the disk device.

(Appendix 3)
An information processing apparatus according to appendix 1 or 2,
The information processing apparatus, wherein the detection unit detects a SCSI (Small Computer System Interface) command related to a failure as the monitoring target I / O information.

(Appendix 4)
An information processing apparatus according to any one of appendices 1 to 3,
The detection unit detects, as the monitoring target I / O information, an error code issued by the disk device when a problem occurs in the disk device.

(Appendix 5)
An information processing apparatus according to any one of appendices 1 to 4,
The failure determination means compares the measured number of monitored I / O information with a predetermined threshold, and determines a failure of the disk device based on the comparison result.

(Appendix 6)
An information processing apparatus according to appendix 5,
The number of the monitoring target I / O information measured by the failure determination unit is configured to be subtracted according to a detection situation.

(Appendix 7)
The information processing apparatus according to appendix 5 or 6,
The failure determination means is configured to subtract the number of the monitoring target I / O information being measured every time a predetermined time elapses.

(Appendix 8)
An information processing apparatus according to any one of appendices 1 to 7,
The detachment control unit detaches the disk device by stopping power supplied to the disk device based on a determination result by the failure determination unit.

(Appendix 9)
Among the I / O (Input / Output) information of the disk device, a predetermined type of monitored I / O information is detected,
The number of detected monitoring target I / O information is measured, and the presence or absence of a failure of the disk device is determined based on the measurement result
An information processing method for separating the disk device based on a determination result.

(Appendix 9-1)
An information processing method according to attachment 9, wherein
An information processing method for detecting I / O information issued when a failure occurs in the disk device as the monitoring target I / O information.

(Appendix 9-2)
An information processing apparatus according to appendix 9 or 9-1,
An information processing method for detecting a small computer system interface (SCSI) command related to a failure as the monitoring target I / O information.

(Appendix 10)
In an information processing apparatus having a disk device,
Detecting means for detecting a predetermined type of monitoring target I / O information out of I / O (Input / Output) information of the disk device;
Failure determination means for measuring the number of monitoring target I / O information detected by the detection means, and determining the presence or absence of a failure of the disk device based on the measurement result;
Decoupling control means for detaching the disk device based on a determination result by the failure determining means,
A program to realize

(Appendix 10-1)
The program according to attachment 10, wherein
The monitoring target I / O information detected by the detection means is I / O information issued when a failure occurs in the disk device.

(Appendix 10-2)
The program according to appendix 10 or 10-1,
The detection means is a program for detecting a small computer system interface (SCSI) command related to a failure as the monitoring target I / O information.

  The programs described in the above embodiments and supplementary notes are stored in a storage device or recorded on a computer-readable recording medium. For example, the recording medium is a portable medium such as a flexible disk, an optical disk, a magneto-optical disk, and a semiconductor memory.

  Although the present invention has been described with reference to the above embodiments, the present invention is not limited to the above-described embodiments. 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.

1 Information processing apparatus 11 CPU
111 I / O Controller 12 Storage Controller 13 I / O Detecting Unit 131 I / O Detecting Unit 132 I / O Determining Unit 133 Monitoring I / O Information 14 Failure Judging Unit 141 Decoupling Control Unit 142 Detaching Determining Unit 143 Timer 144 Counter 145 Timer Initial value 146 Counter threshold value 147 Timer control unit 148 Counter control unit 15 Power supply control means 16 Disk device 2 Information processing device 21 Disk device 22 Detection means 23 Failure judgment means 24 Decoupling means

Claims (10)

A disk unit;
Detecting means for detecting a predetermined type of monitoring target I / O information out of I / O (Input / Output) information of the disk device;
Failure determination means for measuring the number of monitoring target I / O information detected by the detection means, and determining the presence or absence of a failure of the disk device based on the measurement result;
Detaching means for detaching the disk device based on a determination result by the failure determining means;
An information processing apparatus. The information processing apparatus according to claim 1,
The monitoring target I / O information detected by the detection means is I / O information issued when a failure occurs in the disk device. The information processing apparatus according to claim 1 or 2,
The information processing apparatus, wherein the detection unit detects a SCSI (Small Computer System Interface) command related to a failure as the monitoring target I / O information. The information processing apparatus according to claim 1,
The detection unit detects, as the monitoring target I / O information, an error code issued by the disk device when a problem occurs in the disk device. An information processing apparatus according to any one of claims 1 to 4,
The failure determination means compares the measured number of monitored I / O information with a predetermined threshold, and determines a failure of the disk device based on the comparison result. The information processing apparatus according to claim 5,
The number of the monitoring target I / O information measured by the failure determination unit is configured to be subtracted according to a detection situation. The information processing apparatus according to claim 5 or 6,
The failure determination means is configured to subtract the number of the monitoring target I / O information being measured every time a predetermined time elapses. An information processing apparatus according to claim 1,
The detachment control unit detaches the disk device by stopping power supplied to the disk device based on a determination result by the failure determination unit. Among the I / O (Input / Output) information of the disk device, a predetermined type of monitored I / O information is detected,
The number of detected monitoring target I / O information is measured, and the presence or absence of a failure of the disk device is determined based on the measurement result
An information processing method for separating the disk device based on a determination result. In an information processing apparatus having a disk device,
Detecting means for detecting a predetermined type of monitoring target I / O information out of I / O (Input / Output) information of the disk device;
Failure determination means for measuring the number of monitoring target I / O information detected by the detection means, and determining the presence or absence of a failure of the disk device based on the measurement result;
Decoupling control means for detaching the disk device based on a determination result by the failure determining means,
A program to realize

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