WO2017067382A1

WO2017067382A1 - Disk state detection method, disk expander, and disk control system

Info

Publication number: WO2017067382A1
Application number: PCT/CN2016/101390
Authority: WO
Inventors: 吴小祥; 王昕�; 朱炫鹏; 舒坦; 梁庆永
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-10-19
Filing date: 2016-09-30
Publication date: 2017-04-27
Also published as: CN106598476A

Abstract

A disk state detection method, a disk expander, and a disk control system. The disk state detection method comprises: a disk expander initiates a disk state detection request to disks to be detected; the disk expander receives disk state detection results fed back by the disks to be detected; and the disk expander sends the disk state detection results to a disk controller.

Description

Disk status detection method, disk expander, and disk control system

Technical field

The present disclosure relates to the field of communications, for example, to a disk state detection method, a disk expander, and a disk control system.

Background technique

With the continuous development of information technology, the data generated by people's daily production and life processes has exploded in an explosive way. These massive amounts of data need to be managed by independent professional equipment, so disk arrays have emerged.

The current mainstream disk arrays connect a large number of disks through a Serial Small Attached System (SAS) network to provide users with high-capacity, high-reliability and high-availability data storage and backup functions.

The SAS network can include three elements: a disk controller, a disk expander, and a disk. See Figure 1 for a schematic diagram of the connection between the three. The disk controller is responsible for scanning the topology of the SAS network, initiating access to the disk, and managing the disk expander; the disk expander is responsible for connecting the disk controller to the disk controller and at least one disk, and forwarding information transmitted between the disk controller and at least one disk. The disk expander is a device that acts as a switch; after the disk is connected to the disk expander, it is connected to the SAS network and can provide a block storage service.

The SAS network provides a high-speed, scalable, and highly reliable information-bearing network for the Small Computer System Interface (SCSI) protocol. The SCSI protocol defines the access criteria for fast devices. The disk controller acts as a small computer system interface initiator (SCSI Initiator). The disk acts as a small computer system interface target (SCSI Target). The disk controller is implemented according to the Initiator and Target models. Access to the disk.

In order to confirm disk availability, the SCSI Initiator on the disk controller periodically sends SCSI commands to the disk: the Test Unit Ready (TUR) command, and the disk receives the TUR command. Then return according to its own state. When the disk can provide services, it receives the TUR command and returns to the ready state (Good state) when receiving the TUR command; when the disk cannot provide the service and cannot process the SCSI command, it returns the check condition after receiving the TUR command (Check Condition) status). The disk controller can determine whether the disk is available based on the return status of the TUR instruction.

In the case of a surge in data volume, in order to expand storage capacity, more and more disks are accessed, and a single disk array can access up to several thousand disks. With so many disks in an array, to get the available state of each disk, the disk controller needs to send TUR commands to each disk periodically, so at least several thousand TUR commands need to be sent during the disk availability detection interval. It imposes a heavy burden on the system; and SAS technology is a connection-oriented technology, that is, when a TUR needs to be sent, the connection needs to be opened, a connection is established between the disk controller, the disk expander and the disk, and the connection is prohibited. For other dedicated connections for data transmission, close the connection after this test is completed. Such a feature makes the TUR frequently send resources that seriously occupy the disk controller and the disk expander, seriously affecting the reading and writing of normal data, and reducing the performance of the disk array.

Therefore, in the disk array system of the related art, the disk controller is used to initiate a TUR to each disk to detect the availability of the disk, which is inefficient, consumes a large amount of resources, affects normal data access to the disk, and reduces the disk. The overall performance of the array is a problem.

Summary of the invention

The present disclosure provides a disk state detection method, a disk expander, and a disk control system, which solve the problems of low efficiency, large resource consumption, and overall performance of the disk array in the related art.

In a first aspect, the present disclosure provides a disk state detection method, including:

The disk expander initiates a disk state detection request to the to-be-detected disk;

The disk expander receives a disk state detection result fed back by the disk to be detected;

The disk expander sends the disk state detection result to the disk controller.

In an embodiment of the present disclosure, the to-be-detected disk is at least one disk directly connected to the disk expander.

In an embodiment of the present disclosure, the disk expander initiating a disk state detection request to the to-be-detected disk includes:

The disk expander sends a disk state detection request to the to-be-detected disk according to a preset detection time interval.

In an embodiment of the present disclosure, the disk state detection request includes a unit state test request; and the disk state detection result includes a disk availability detection result.

In an embodiment of the present disclosure, the disk expander sending the disk state detection result to the disk controller includes:

Receiving, after receiving the disk state detection result sent by the disk controller, the disk expander sends the disk state detection result to the disk after receiving the disk state query result sent by the disk controller. Controller

After the disk expander receives the disk state detection result of the disk feedback to be detected, the disk state detection result is actively sent to the disk controller.

In a second aspect, the present disclosure also provides a disk expander, including:

The detection initiation module is configured to initiate a disk state detection request to the to-be-detected disk;

a receiving module, configured to receive a disk state detection result of the disk feedback to be detected; and

The sending module is configured to send the disk state detection result to the disk controller.

In an embodiment of the present disclosure, the detection initiation module includes a timing submodule and an initiation submodule;

The timing submodule is configured to time the detection time interval; and,

The initiator module is configured to send a disk state detection request to the to-be-detected disk when the detection time interval arrives.

In a third aspect, the present disclosure further provides a disk control system, including any of the disk expanders and disk controllers provided by the embodiments of the present disclosure;

The disk expander is configured to initiate a disk state detection request to the to-be-detected disk, receive a disk state detection result fed back by the disk to be detected, and send the disk state detection result to the disk controller; and

The disk controller is configured to receive a disk state detection result sent by the disk expander, and obtain state information of the corresponding disk according to the disk state detection result.

In a fourth aspect, the present disclosure also provides a non-transitory computer readable storage medium storing computer executable instructions arranged to perform a disk state detection method on any of the disk expander sides.

In a fifth aspect, the disclosure further provides an electronic device, the device comprising:

At least one processor;

a memory communicatively coupled to the at least one processor; wherein

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform a disk state detection method on any of the disk expander sides described above .

The disk state detecting method, the disk expander, and the disk control system provided by the embodiment of the present disclosure directly initiate a disk state detection request to the disk to be detected through the disk expander, and the to-be-detected disk directly feeds back the detection result according to the disk state detection request. Disk expander; then the disk expander will magneticize The disc status detection result is fed back to the disk controller. When the disk state detection is performed by the disk expander in the embodiment of the present disclosure, the detection process initiated by the disk controller in the related art is more direct and faster, and the efficiency is higher; then the disk controller only needs to be from a limited disk expander. Obtaining the corresponding state detection result, it is not necessary to initiate a state detection request to each disk, so the detection method in the related art can greatly reduce the number of message interactions between the disk controller and the disk expander, so that the disk controller and the disk expansion The connection between the devices will not be used for a long time and in a large amount, so the access efficiency to the disk can be improved, and the overall performance of the entire column of the disk can be improved.

DRAWINGS

1 is a schematic structural diagram of a SAS network;

2 is a schematic flowchart of a disk state detecting method according to Embodiment 1 of the present disclosure;

3 is a schematic flowchart of a method for acquiring a disk state according to Embodiment 1 of the present disclosure;

4 is a schematic structural diagram of a disk control system according to Embodiment 2 of the present disclosure;

FIG. 5 is a schematic structural diagram of a disk expander according to Embodiment 2 of the present disclosure;

6 is a schematic structural diagram of a detection initiation module in FIG. 5;

FIG. 7 is a schematic structural diagram of a disk controller according to Embodiment 2 of the present disclosure;

8 is a schematic structural diagram of another disk controller according to Embodiment 2 of the present disclosure;

FIG. 9 is a schematic flowchart of a disk expander initiating an availability state detection process according to Embodiment 3 of the present disclosure;

10 is a schematic flowchart of a disk controller processing availability state detection result according to Embodiment 3 of the present disclosure;

FIG. 11 is a schematic structural diagram of a disk expander according to Embodiment 6 of the present disclosure; and

FIG. 12 is a schematic structural diagram of a disk controller according to a seventh embodiment of the disclosure.

detailed description

The present disclosure is described in detail below with reference to the accompanying drawings in the accompanying drawings. In the absence of conflict, The features in the embodiments and the embodiments may be arbitrarily combined with each other.

Embodiment 1:

This embodiment provides a disk state detection method, which is shown in FIG. 2, and includes:

In S210, the disk expander initiates a disk state detection request to the to-be-detected disk;

In S220, the disk expander receives the disk state detection result of the disk feedback to be detected;

In S230, the disk expander sends the received disk state detection result to the disk controller.

In this embodiment, by adding a disk state detection function to the disk expander, for example, adding a disk state detection proxy module, the disk expander directly initiates a disk state detection request to the disk, instead of the disk controller initiating a disk state detection request, because The disk expander is closer to the disk (generally directly connected to the disk), so initiating state detection requests is more straightforward and more efficient.

After receiving the disk state detection request, the disk in this embodiment can detect the relevant state of the corresponding disk unit. It should be understood that the disk state detection request initiated by the disk expander in this embodiment may be detected for multiple states of the disk, and may be the availability state of the disk; the disk state detection request initiated at this time includes a unit state test (TUR). The request, that is, the availability detection request of the disk; after receiving the request, the disk can detect its current availability status, and the disk status detection result that the disk to be detected feeds back to the disk expander includes the disk availability detection result. The disk availability test result may be one of Good and Check Condition. When Good, the disk availability status is available; when Check Condition, the disk availability status is unavailable. When the disk expander sends the disk status detection result to the disk controller, the disk expander can directly send the received Good or Check Condition result to the disk controller, and the disk controller analyzes the disk available according to the Good or Check Condition result. Not available; the disk expander can also analyze the disk as available or unavailable based on the received Good or Check Condition and then feed back the analyzed available or unavailable status to the disk controller. In addition, the disk expander in this embodiment is in the form of a disk When the state detection result is sent to the disk controller, the disk state detection result is optionally organized into a message list and sent to the disk controller for disk controller analysis.

In addition, the rule that the disk expander initiates a disk state detection request to the disk to be detected in this embodiment may be set according to an application scenario. For example, the disk expander sends a disk state detection request to the to-be-detected disk according to a preset detection time interval. For example, a disk state detection request is initiated to the disk to be detected every 1 second or 5 seconds. The value of this time interval can be considered according to factors such as the current detection requirement and the current detection status.

In order to improve the detection efficiency, the disk to be detected in this embodiment may be at least one disk directly connected to the disk expander. The disk expander in this embodiment optionally initiates a disk state detection request to a disk directly connected to the disk expander; and the disk expander can select to initiate a disk state detection request to one or more disks directly connected to the disk expander. .

In this embodiment, when the disk expander sends the received disk state detection result to the disk controller, the disk expander may be passively sent according to the requirements of the disk controller, or may be actively sent according to relevant rules. When the disk controller is passively sent according to the requirements of the disk controller, the disk expander first stores the disk state detection result of the feedback of the disk to be detected, and can be stored in the local data area, and the data area can be the storage disk state detection result. The dedicated data area set may also be a data area shared with other data; after receiving the disk state query request sent by the disk controller, the disk expander sends the stored disk state detection result to the disk control. Device.

When the disk expander actively sends the disk state detection result to the disk controller, the disk expander can directly send the disk state detection result of the received disk feedback to the disk controller after receiving the disk state detection result of the disk feedback to be detected. It can also be stored and sent to the disk controller. For example, after being stored locally, and then actively sending to the disk controller at a certain time interval, for example, the corresponding disk state detection result is fed back to the disk controller every 1 second or 2 seconds.

This embodiment also provides a disk state obtaining method, as shown in FIG. 3, including:

In S310, the disk controller receives the disk state detection result sent by the disk expander, and the disk state detection result is obtained by any disk state detection method provided by the embodiment of the disclosure, optionally, the disk expander is as shown in the figure. Obtained by the disk state detection method shown in 2;

In S320, the disk controller analyzes the received disk state detection result to obtain status information of the corresponding disk.

When the disk controller in this embodiment obtains the disk state detection result from the disk expander, the disk controller may initiate a request acquisition to the disk expander, or directly receive the disk state detection result directly fed back by the disk expander. When the request is obtained from the disk expander, the disk controller sends a disk status query request to the disk expander before the S310; the disk controller sends the disk status query request to the rule at a certain time interval. The time interval may be the same as the time interval of the disk state detection request delivered by the disk expander, and may be different, for example, 1 second, 2 seconds, etc., and the value may also be set according to the current detected state and detection requirements. set.

In this embodiment, the disk state detection request initiated by the disk expander may be the availability state of the disk; the state detection result received by the disk controller includes the disk availability detection result. The disk availability test result may be one of Good and Check Condition. At this time, the disk controller can analyze itself as Good, indicating that the disk availability status is available; when it is Check Condition, it indicates that the disk availability status is unavailable. The disk availability test result may also be that the disk expander analyzes the available or unavailable information of the disk according to Good or Check Condition. The analyzed available or unavailable status information is then sent to the disk controller.

When the disk state detection is performed by the disk expander in the embodiment of the present disclosure, the detection process initiated by the disk controller in the related art is more direct and faster, and the efficiency is higher; then the disk controller only needs to be limited when needed. Get the corresponding status detection result on the disk expander, no need to go to each The disk initiates a state detection request. Compared with the detection method in the related art, the number of message interactions between the disk controller and the disk expander can be greatly reduced, so that the connection between the disk controller and the disk expander is not occupied for a long time and is greatly occupied. The access efficiency of the disk improves the overall performance of the entire array of disks.

Embodiment 2:

This embodiment provides a disk control system, as shown in Figure 4, the package disk expander 1 and the disk controller 2;

The disk expander 1 is configured to initiate a disk state detection request to the disk to be detected, receive the disk state detection result fed back by the disk to be detected, and send the disk state detection result to the disk controller 2;

The disk controller 2 is configured to receive the disk state detection result sent by the disk expander 1, and obtain the state information of the corresponding disk according to the disk state detection result.

As an example, referring to FIG. 5, the disk expander 1 includes:

The detecting and initiating module 11 is configured to initiate a disk state detection request to the to-be-detected disk;

The receiving module 12 is configured to receive a disk state detection result fed back by the disk to be detected;

The sending module 13 is configured to send the disk state detection result to the disk controller 2.

The detection initiating module 11 initiates a disk state detection request to the disk to be detected; the rule may be set according to an application scenario. For example, the disk expander sends a disk state detection request to the to-be-detected disk according to a preset detection time interval. For example, a disk state detection request is initiated to the disk to be detected every 1 second or 5 seconds. The value of this time interval can be considered according to factors such as the current detection requirement and the current detection status.

Optionally, the to-be-detected disk is at least one disk directly connected to the disk expander.

Optionally, as shown in FIG. 6, the detection initiation module 11 includes a timing sub-module 111 and an initiation sub-module 112;

The timing sub-module 111 is configured to time the detection time interval;

The initiating submodule 112 is configured to send a disk shape to the to-be-detected disk when the detection time interval arrives State detection request.

In this embodiment, the disk state detection request initiated by the detection initiating module 11 can detect multiple states of the disk, which can be a disk availability state; the disk state detection request initiated at this time includes a unit state test (TUR) request, that is, a disk. The availability detection request; after the disk receives the request, it can detect its current availability status, and the disk status detection result fed back to the disk expander includes the disk availability detection result. The disk availability test result may be one of Good and Check Condition. When Good, the disk availability status is available; when Check Condition, the disk availability status is unavailable. When the sending module 13 sends the disk state detection result to the disk controller, the sending module 13 can directly send the received Good or Check Condition result to the disk controller, and the disk controller analyzes the disk available according to the Good or Check Condition result. Not available; the sending module 13 can also analyze the disk as available or unavailable according to the received Good or Check Condition, and then feed back the analyzed available or unavailable state to the disk controller. In addition, the sending module 13 in this embodiment sends the disk state detection result to the disk controller in an optional manner to send the disk state detection result to the disk controller for the disk controller to analyze.

In order to improve the detection efficiency, the to-be-detected disk in this embodiment may be set to be at least one disk directly connected to the disk expander. The detection initiating module 11 in this embodiment may optionally initiate a disk state detection request to a disk directly connected to the disk expander; and the detection initiating module 11 may select to initiate a disk state to one or more disks directly connected to the disk expander. Detect the request.

In this embodiment, when the sending module 13 sends the disk state detection result to the disk controller 2, the sending module 13 may be passively sent according to the requirements of the disk controller, or may be actively sent according to relevant rules. When the passive controller sends the request to the disk controller, the receiving module 12 stores the disk state detection result of the at least one disk to be detected, and then stores the data in the local data area, where the data area can be stored. The dedicated data area set by the disk state detection result may also be a data area shared with other data; then the sending module 13 detects the corresponding disk state after receiving the disk state query request sent by the disk controller. The result is sent to the disk controller.

When the sending module 13 actively sends the disk state detection result to the disk controller, the sending module 13 can directly send the disk state detection result fed back by the disk to the disk controller after receiving the disk state detection result of the disk feedback to be detected. Alternatively, the receiving module 12 may receive the disk state detection result and store it before sending it to the disk controller.

Referring to FIG. 7, the disk controller 2 includes a state obtaining module 22 and a state analyzing module 23;

The state obtaining module 22 is configured to receive any disk state detection result provided by the embodiment of the present disclosure, optionally, the disk state detection result sent by the disk expander 1 shown in FIG. 5;

The state analysis module 23 is configured to analyze the disk state detection result to obtain state information of the corresponding disk.

When the disk controller 2 in this embodiment obtains the disk state detection result from the disk expander 1, the disk controller 2 can initiate a request acquisition to the disk expander 1 or directly receive the disk state detection directly fed back by the disk expander 1. result. When the request is obtained from the disk expander 2, the disk controller 2 further includes a requesting module 21, which is configured to send a disk status query request to the disk expander. The rule of the disk status query request may be sent at a certain interval, and the time interval may be the same as the time interval for the disk expander 1 to deliver the disk state detection request, and may be different, for example, 1 second, 2 seconds, etc. The value can also be set according to the current detection status and detection requirements.

As described above, the disk state detection request initiated by the disk expander 1 in this embodiment may be the availability state of the disk; the state detection result received by the disk controller 2 includes the disk availability detection result. The disk availability test result may be one of Good and Check Condition, at this time disk control The state analysis module 23 of the controller 2 can analyze by itself that when the value is Good, it indicates that the disk availability state is available; when it is Check Condition, it indicates that the disk availability state is unavailable. The disk availability test result may also be that disk expander 1 analyzes the available or unavailable information of the disk according to Good or Check Condition. The status analysis module 23 directly obtains available or unavailable information from the disk availability test results.

When the disk state detection is performed by the disk expander in the embodiment of the present disclosure, the detection process initiated by the disk controller in the related art is more direct and faster, and the efficiency is higher; then the disk controller only needs to be limited when needed. Obtaining the corresponding state detection result on the disk expander does not need to initiate a state detection request to each disk. Compared with the detection method in the related art, the number of message interactions between the disk controller and the disk expander can be greatly reduced, so that the disk controller The connection with the disk expander will not be used for a long time and a large amount, which improves the access efficiency of the disk and improves the overall performance of the disk array.

Embodiment 3:

For a better understanding of the present disclosure, the present disclosure is exemplified below in conjunction with an application scenario.

See Figure 9, which shows the process by which the disk expander detects the availability status of a single disk, including:

In S901, the disk expander sends a TUR command to a single disk;

In S902, the disk expander receives the return result of the disk according to the TUR command;

In S903, whether the result is Good, if yes, go to S905; when the returned result is not Good, go to S904;

In S904, it is determined that the disk status is unavailable;

In S905, it is determined that the disk status is available;

In S906, the available state of the disk is written into the data area of the disk availability detection proxy module;

In S907, the delay is 1 second, and the process goes to S901, and a TUR command is issued to the disk, and S901 to S907 are repeated.

See Figure 10, which shows a flowchart of the disk controller processing disk availability test results, including:

In S1001, the disk controller (as a SCSI Initiator) initiates a query for a disk availability status request to the disk expander;

In S1002, the disk controller receives the disk availability information returned by the disk expander;

In S1003, the disk controller determines the number of disks that need to be processed for disk availability information. If it is 0, go to S1006, if not 0, go to S1004;

In S1004, processing disk availability information of a single disk;

In S1005, the number of disks that need to process disk availability information is reduced by one, and the process proceeds to S1003;

In S1006, the delay is 1 second, and the process goes to S1001, and the disk expander status is inquired again to the disk expander.

The detection mechanism added to the disk expander in the embodiment of the present disclosure can greatly reduce the number of TURs between the disk controller and the disk expander, and avoids occupying the disk controller and the disk expander for a long time because the disk controller sends the TUR to the disk. The situation of the SAS link improves the efficiency of the SAS network and improves the performance of the disk array.

Embodiment 4

Embodiment 4 of the present disclosure further provides a non-transitory computer readable storage medium storing computer executable instructions configured to perform disk state detection on a disk expander side in any of the above embodiments. method.

Embodiment 5

Embodiment 5 of the present disclosure further provides a non-transitory computer readable storage medium storing computer executable instructions configured to perform disk state acquisition on a disk controller side in any of the above embodiments. method.

Embodiment 6

Embodiment 6 of the present disclosure also provides a schematic structural diagram of a disk expander. Referring to Figure 11, the disk expander includes:

At least one processor 1110, which is exemplified by a processor 1110 in FIG. 11; and a memory 1120, may further include a communication interface 1130 and a bus 1140. The processor 1110, the memory 1120, and the communication interface 1130 can complete communication with each other through the bus 1140. Communication interface 1130 can be used for information transmission. The processor 1110 can call the logic instructions in the memory 1120 to perform the disk state detecting method on the disk expander side of the above embodiment.

In addition, the logic instructions in the memory 1120 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.

The memory 1120 is used as a computer readable storage medium, and can be used to store a software program, a computer executable program, and a module, such as a program instruction/module corresponding to the disk state detection method on the disk expander side in the embodiment of the present disclosure (FIG. 5). The detection initiation module 11, the receiving module 12 and the transmitting module 13) are shown. The processor 1110 executes the function application and the data processing by executing the software program, the instruction, and the module stored in the memory 1120, that is, the disk state detection method on the disk expander side in the above method embodiment.

The memory 1120 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. Further, the memory 1120 may include a high speed random access memory, and may also include a nonvolatile memory.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network) Apparatus, etc.) performing the method of the embodiments of the present disclosure All or part of the steps. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A medium that can store program code, or a transitory storage medium.

Example 7

Embodiment 7 of the present disclosure also provides a schematic structural diagram of a disk controller. Referring to Figure 12, the disk controller includes:

At least one processor 1210 is illustrated by one processor 1210 in FIG. 12; and a memory 1220 may further include a communication interface 1230 and a bus 1240. The processor 1210, the memory 1220, and the communication interface 1230 can complete communication with each other through the bus 1240. Communication interface 1230 can be used for information transfer. The processor 1210 can call the logic instructions in the memory 1220 to perform the disk state acquisition method on the disk controller side of the above embodiment.

In addition, the logic instructions in the memory 1220 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.

The memory 1220 is used as a computer readable storage medium, and can be used to store a software program, a computer executable program, and a module, such as a program instruction/module corresponding to a disk state acquisition method on the disk controller side in the embodiment of the present disclosure (see FIG. 7). The state acquisition module 22 and the state analysis module 23) are shown. The processor 1210 performs the function application and the data processing by executing the software program, the instruction and the module stored in the memory 1220, that is, the disk state acquisition method on the disk controller side in the above method embodiment.

The memory 1220 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; and the storage data area may be stored according to the terminal device Use the data created, etc. Further, the memory 1220 may include a high speed random access memory, and may also include a nonvolatile memory.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method of the embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A medium that can store program code, or a transitory storage medium.

The above is a detailed description of the present disclosure in connection with the alternative embodiments, and it is not considered that the alternative embodiments of the present disclosure are limited to the description.

Industrial applicability

Embodiments of the present disclosure provide a disk state detection method, a disk expander, and a disk control system, which are initiated by a disk expander directly connected to a disk during disk state detection, and a detection process initiated by a disk controller in the related art. More direct and faster, more efficient; then the disk controller only needs to obtain the corresponding status detection result from the limited disk expander, no need to initiate a status detection request to each disk, so the disk controller and disk can be greatly reduced The number of message interactions between the expanders makes the link between the disk controller and the disk expander not long and heavily occupied, thereby improving the access efficiency of the disk and improving the overall performance of the disk array.

Claims

A disk state detection method includes:

The disk expander initiates a disk state detection request to the to-be-detected disk;

The disk expander receives a disk state detection result of the disk feedback to be detected; and,

The disk expander sends the disk state detection result to the disk controller.
The disk state detecting method according to claim 1, wherein the disk to be detected is at least one disk directly connected to the disk expander.
The disk state detecting method according to claim 1 or 2, wherein the disk expander initiating a disk state detecting request to the disk to be detected includes:

The disk expander sends a disk state detection request to the to-be-detected disk according to a preset detection time interval.
The disk state detecting method according to any one of claims 1 to 3, wherein the disk state detecting request includes a cell state test request; and the disk state detecting result includes a disk usability detecting result.
The disk state detecting method according to any one of claims 1 to 3, wherein the disk expander sends the disk state detection result to the disk controller, including:

Receiving, after receiving the disk state detection result sent by the disk controller, the disk expander sends the disk state detection result to the disk after receiving the disk state query result sent by the disk controller. Controller

After the disk expander receives the disk state detection result of the disk feedback to be detected, the disk state detection result is actively sent to the disk controller.
A disk expander that includes:

The detection initiation module is configured to initiate a disk state detection request to the to-be-detected disk;

a receiving module, configured to receive a disk state detection result of the disk feedback to be detected; and

The sending module is configured to send the disk state detection result to the disk controller.
The disk expander of claim 6, wherein the disk to be detected is at least one disk directly connected to the disk expander.
The disk expander according to claim 6 or 7, wherein the detection initiation module comprises a timing sub-module and an initiation sub-module;

The timing submodule is configured to time the detection time interval; and,

The initiator module is configured to send a disk state detection request to the to-be-detected disk when the detection time interval arrives.
The disk expander according to any one of claims 6 to 8, wherein the disk state detection request includes a unit state test request; and the disk state detection result includes a disk usability detection result.
A disk control system comprising the disk expander and disk controller of any one of claims 6-9;

The disk expander is configured to initiate a disk state detection request to the to-be-detected disk, receive a disk state detection result fed back by the disk to be detected, and send the disk state detection result to the disk controller; and

The disk controller is configured to receive a disk state detection result sent by the disk expander, and obtain state information of the corresponding disk according to the disk state detection result.
A non-transitory computer readable storage medium storing computer executable instructions arranged to perform the method of any of claims 1-5.