CN101814010B - A disk array implementation method and device - Google Patents

Abstract

The invention puts forward a disk array implementation method and a device. A disk array comprises master disks and slave disks. The method includes the following steps: detecting the state parameters of the master disks; evaluating the state of the master disks according to a state parameter detection result of the master disks; judging a state evaluation result of the master disks, and controlling the slave disks to be in a hibernation mode if the state evaluation result is the healthy state of the master disks; and controlling the slave disks to be in a running mode if the state evaluation result is the subhealthy state of the master disks. The adoption of the method can realize the disk array function, and under the premise of guaranteeing data security, the waste of energy is reduced.

Description

A disk array realization method and device

technical field

The invention relates to disk array management technology, in particular to a disk array realization method and device.

Background technique

At present, digital technology has been integrated into the lives of most people, followed by the preservation of a large amount of data. Large-capacity disks emerge in endlessly, from GB level to the current TB level. The security of data preservation has also become the focus of attention. The emergence of disk arrays has greatly satisfied people's requirements for data security.

As the quality of disks continues to improve, so does their useful life. For traditional disk arrays, such as RAID 1, the master and slave disks maintain data synchronization all the time, as shown in Figure 1(a) to Figure 1(c), where Figure 1(a) and Figure 1(b) , Figure 1(c) is a schematic diagram of the storage status of the master and slave disks in chronological order. After careful observation, the applicant found that when the performance of the main disk is good, unnecessary waste of energy will be caused.

Since the security of the data is the first priority, how to reduce the waste of energy while ensuring the security of the data is a direction that requires continuous efforts of those skilled in the art.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and device for implementing a disk array, which can reduce energy waste on the premise of realizing the function of the disk array and ensuring data security.

In order to solve the above-mentioned technical problems, the present invention proposes a device for implementing a disk array. The disk array includes a master disk and a slave disk. The device includes a state detection unit, an evaluation control unit, and an energy-saving control unit connected in sequence. and a differential variable synchronization unit, wherein:

The state detection unit is used to detect the state parameters of the main disk, and send the parameter detection results to the evaluation control unit;

The evaluation control unit is configured to perform state evaluation according to preset evaluation rules after receiving the parameter detection result sent by the state detection unit, and send the state evaluation result to the energy-saving control unit;

The energy-saving control unit is used to receive and judge the status evaluation result sent by the evaluation control unit, if the evaluation result indicates that the master disk is in a healthy state, then control the slave disk to be in sleep mode; if the evaluation result indicates that the master disk is in a sleep mode; If the disk is in a sub-healthy state, the slave disk is controlled to be in the running mode, and a synchronization control command is sent to the difference variable synchronization unit;

The difference variable synchronization unit is configured to synchronize the difference variables between the master disk and the slave disk after receiving the synchronization control command sent by the energy-saving control unit.

Further, the above-mentioned device can also have the following characteristics:

The energy-saving control unit controlling the slave disk to be in the running mode includes: controlling the slave disk to start, and controlling the master-slave disk to synchronize.

Further, the above-mentioned device can also have the following characteristics:

The energy-saving control unit, after controlling the master-slave disk to complete the synchronization, replaces the master disk in a sub-healthy state with the slave disk as the new master disk in the disk array where it is located, and makes other disks in the disk array serve as New from disk.

Further, the above-mentioned device can also have the following characteristics:

The energy-saving control unit further reminds the user to replace the sub-healthy master disk after controlling the master-slave disk to complete the synchronization.

Further, the above-mentioned device can also have the following characteristics:

Further, the above-mentioned device can also have the following characteristics:

When the energy-saving control unit starts the disk array, it only starts the primary disk in the disk array.

In order to solve the above-mentioned technical problems, the present invention also proposes a method for realizing a disk array, the disk array includes a master disk and a slave disk, and the method includes:

Detect the status parameters of the primary disk;

Evaluate the state of the primary disk according to the detection results of the state parameters of the primary disk;

Judging the status evaluation result of the primary disk, if the status evaluation result of the primary disk is in a healthy state, control the slave disk to be in sleep mode; if the evaluation result is in a sub-healthy state of the primary disk, control the The master disk and the slave disk synchronize the difference variables.

Further, the above method can also have the following characteristics:

The controlling the slave disk to be in the running mode includes: controlling the slave disk to start, and controlling the master-slave disk to synchronize.

Further, the above method can also have the following characteristics:

After the master-slave disk is controlled to complete synchronization, the slave disk is used to replace the sub-healthy master disk as a new master disk in the disk array where it is located, and other disks in the disk array are used as new slave disks.

Further, the above method can also have the following characteristics:

After the master-slave disk is controlled to complete the synchronization, the user is also reminded to replace the master disk in sub-health state.

Further, the above method can also have the following characteristics:

When starting a disk array, only the primary disk in the disk array is started.

The method and device for implementing a disk array proposed by the present invention can reduce energy waste on the premise of realizing the function of the disk array and ensuring data security.

Description of drawings

Fig. 1 (a) to Fig. 1 (c) are the storage status schematic diagrams of prior art master-slave disk according to chronological order;

Fig. 2 is a block diagram of a device for implementing a disk array according to an embodiment of the present invention;

FIG. 3 is a flow chart of a method for implementing a disk array according to an embodiment of the present invention;

FIG. 4( a ) to FIG. 4( d ) are schematic diagrams of the storage states of the master and slave disks in chronological order according to the embodiment of the present invention.

Detailed ways

The present invention proposes a disk array implementation method and device, which can reduce energy waste on the premise of realizing the disk array function and ensuring data security. Detect the parameters, and then evaluate its health status. When the evaluation result is in the healthy state of the master disk, the control slave disk is in sleep mode; when the evaluation result is in the sub-health state of the master disk, the control slave disk is in the running mode. So as to achieve the purpose of reducing the overall power consumption of the computer.

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 2 , this figure shows a disk array implementation device according to an embodiment of the present invention, including a state detection unit, an evaluation control unit, an energy saving control unit, and a differential variable synchronization unit connected in sequence, wherein:

The state detection unit is used to detect the state parameters of the main disk, including detecting various parameters such as disk I/O error rate and disk bad sectors, and sending the parameter detection results to the evaluation control unit. The state detection unit can regularly detect the state parameters of the main disk, and the user can also choose to continuously detect the state parameters of the disk.

The evaluation control unit is configured to perform state evaluation according to preset evaluation rules after receiving the parameter detection result sent by the state detection unit, and send the state evaluation result to the energy saving control unit. The evaluation rules can be set as required, for example, thresholds can be set for each parameter to be detected, and the values of the detected parameters are compared with the corresponding thresholds, so as to determine whether each parameter meets the requirements. Judgment, and set evaluation conditions such as meeting the requirements of a certain amount of data to meet the requirements as the evaluation result is in a healthy state, or setting a number of specified parameters to meet the requirements as the evaluation result to be in a healthy state, and so on.

The energy-saving control unit is used to receive and judge the status evaluation result sent by the evaluation control unit, if the evaluation result indicates that the master disk is in a healthy state, then control the slave disk to be in sleep mode; if the evaluation result indicates that the master disk is in a sleep mode; If the disk status is sub-healthy, the control slave disk is in running mode.

Further, the energy-saving control unit controlling the slave disk to be in the running mode includes: controlling the slave disk to restart, and controlling the master-slave disk to synchronize.

Further, after the energy-saving control unit controls the master-slave disk to complete the synchronization, it also makes the slave disk a new master disk in the disk array where it is located, and makes other disks in the disk array act as new slave disks.

Further, the energy-saving control unit, after controlling the master-slave disk to complete the synchronization, also sends a prompt message to the user to replace the original master disk.

Further, when the energy-saving control unit starts the disk array, only the primary disk in the disk array is started.

Further, the energy-saving control unit also sends a synchronization control command to the differential variable synchronization unit when controlling the slave disk to enter the running mode.

The difference variable synchronization unit is configured to synchronize the difference variables between the master and slave disks after receiving the synchronization control command sent by the energy saving control unit.

Referring to Fig. 3, this figure shows a method for implementing a disk array according to an embodiment of the present invention, including the following steps:

Step S301: Detect the state parameters of the primary disk;

The parameter detection of the primary disk includes the detection of various parameters such as disk I/O error rate and disk bad sectors.

The disk status parameters can be checked regularly, and the user also chooses to continuously check the disk status parameters.

Step S302: Evaluate the state of the primary disk according to the detection result of the state parameter of the primary disk;

When evaluating the state of the primary disk, it is performed according to a preset evaluation rule. The evaluation rules can be set as required, so as to comprehensively analyze the detection parameters and obtain the state evaluation results of the primary disk. For example, thresholds can be set for each parameter to be detected, and the values of the detected parameters can be compared with the corresponding thresholds to judge whether each parameter meets the requirements, and to set, for example, meet certain data The parameters of the quantity meet the requirements as the evaluation result is in a healthy state, or set the evaluation conditions that meet several specified parameters and meet the requirements as the evaluation result is in a healthy state, and so on.

Step S303: Judging the status evaluation result of the master disk, if the evaluation result is the master disk in a healthy state, control the slave disk to be in a sleep mode; if the evaluation result is a master disk in a sub-health state, control the slave disk to be in a running mode.

Wherein, controlling the slave disk to enter the running mode refers to controlling the restart of the slave disk and triggering the synchronization of the slave disk and the master disk.

Preferably, when the slave disk is controlled to enter the running mode, it is also triggered to synchronize the difference variables between the master disk and the slave disk, so as to realize the complete synchronization of the master disk and the slave disk.

Preferably, after the master-slave disk is controlled to complete the synchronization, the slave disk is also made to be the new master disk in the disk array where it is located, and other disks in the disk array are made to be new slave disks, so that the original slave disk can be replaced in time. Disk to replace the original primary disk in a sub-healthy state as the new primary disk to ensure data security.

Preferably, after the synchronization of the master-slave disk is controlled, a prompt message to replace the original master disk can also be sent to the user, so that the user can know the health status of the original master disk in the disk array in time, and replace the original master disk in a sub-healthy state in time , the disk newly replaced by the user in the disk array will be used as the new secondary disk in the disk array.

Preferably, when the computer system is started, only the master disk in the disk array can be started, and the slave disk can be started only when the master disk is in sub-health, thereby further reducing unnecessary power consumption.

The present invention skillfully uses the status evaluation result of the master disk as the criterion for judging whether the slave disk is running, and can control the slave disk to be in a dormant mode when the master disk is in a healthy state, thereby reducing unnecessary power consumption of the computer.

Please combine the method shown in Figure 3 and continue to refer to Figure 4(a) to Figure 4(d), where Figure 4(a), Figure 4(b), Figure 4(c), and Figure 4(d) are in chronological order Sequential representation of the storage status of the master-slave disk: when the computer is started, only the master disk is started (as shown in Figure 4(a)); the status of the master disk is detected and evaluated, and the master disk is found to be in a healthy state, and the slave disk is controlled to be in sleep mode (as shown in Figure 4 (b)); detect and evaluate the condition of the primary disk, find that the primary disk is in a sub-healthy state, control the slave disk to be in the operating mode (as shown in Figure 4 (c)), include starting the slave disk, and control The master-slave disk is synchronized; the master-slave disk synchronization is completed (as shown in Figure 4(d)). It can be seen that adopting the solution of the present invention can make the slave disk be in sleep mode when the master disk is in a healthy state, thereby reducing unnecessary power consumption of the computer.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. disk array implement device, comprise master disk in the described disk array and, it is characterized in that described device comprises a state detection unit, an assessment control module, an Energy Saving Control unit that links to each other successively from disk, and a difference variable lock unit, wherein:

Described state detection unit detects in order to the state parameter to master disk, and the parameter detecting result is sent to described assessment control module;

Described assessment control module in order to after receiving the parameter detecting result that described state detection unit sends, carries out state estimation according to default Rules of Assessment, and the state estimation result is sent to described Energy Saving Control unit;

Described Energy Saving Control unit in order to receive and to judge the state estimation result that described assessment control module sends, if described assessment result indication master disk is in health status, is then controlled from disk and is in park mode; If described assessment result indication master disk is in sub-health state, then controls and be in operational mode, and send synchronous control command to described difference variable lock unit from disk;

Described difference variable lock unit in order to after receiving the synchronous control command that sends described Energy Saving Control unit, carries out the synchronous of difference variable to master disk with from disk.

2. device as claimed in claim 1 is characterized in that:

Described Energy Saving Control unit controls is in operational mode from disk and comprises: control starts from disk, and control principal and subordinate disk carries out synchronously.

3. device as claimed in claim 2 is characterized in that:

The described master disk that is in sub-health state after control principal and subordinate disk is finished synchronously, is replaced as the new master disk its place disk array with described from disk in described Energy Saving Control unit, makes in the described disk array other disks as newly from disk.

4. as claim 2 or 3 described devices, it is characterized in that:

Described Energy Saving Control unit after control principal and subordinate disk is finished synchronously, also reminds the user to substitute the described master disk that is in sub-health state.

5. device as claimed in claim 1 is characterized in that:

Described Energy Saving Control unit only starts the master disk in the disk array when starting disk array.

6. disk array implementation method comprises master disk and, it is characterized in that described method comprises from disk in the described disk array:

Detect the state parameter of master disk;

According to state parameter testing result, master disk is carried out state estimation to master disk;

Judgement is to the state estimation result of master disk, if the state estimation result is in health status for master disk, then controls from disk and is in park mode; Be in sub-health state if assessment result is a master disk, then control and be in operational mode from disk, and trigger to master disk and from disk carry out the difference variable synchronously.

7. method as claimed in claim 6 is characterized in that:

Described control is in operational mode from disk and comprises: control starts from disk, and control principal and subordinate disk carries out synchronously.

8. method as claimed in claim 7 is characterized in that:

After control principal and subordinate disk is finished synchronously, replace the described master disk that is in sub-health state as the new master disk its place disk array with described from disk, make in the described disk array other disks as newly from disk.

9. as claim 7 or 8 described methods, it is characterized in that:

After control principal and subordinate disk is finished synchronously, also remind the user to substitute the described master disk that is in sub-health state.

10. method as claimed in claim 6 is characterized in that:

When starting disk array, only start the master disk in the disk array.

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