CN115951845B - Disk management method, device, equipment and storage medium - Google Patents

Abstract

The application discloses a disk management method, a device, equipment and a storage medium, and relates to the technical field of storage. The method comprises the following steps: acquiring a threshold domain, and defining a threshold for a disk array card according to the size of the threshold domain; taking bits contained in the threshold as bitmaps of the disks, and sequentially executing a hooking operation on the corresponding disks in the current threshold by moving a threshold pointer in the threshold; and moving the threshold after all the disks corresponding to the current threshold are hung, and sequentially executing hanging operation on the disks corresponding to the moved threshold by using the threshold finger until all the disks in the disk array card are hung. And the threshold pointer are utilized to manage the down-hanging operation of all the disks in the disk array card through a threshold moving algorithm, only resources with the threshold domain and the threshold pointer are occupied, the occupancy rate of memory resources is effectively reduced, and the speed of executing the down-hanging disk task of the disk array card is accelerated.

Description

Disk management method, device, equipment and storage medium

technical field

The invention relates to the field of storage technology, in particular to a disk management method, device, equipment and storage medium.

Background technique

With the rapid development of the industrial Internet, more and more data needs to be stored safely and reliably in the data center, so storage technology is particularly important in the current era of the industrial Internet. With the increasing amount of data to be stored, the data running on a single storage server is also increasing. When the capacity and security of a single storage server are not enough to support the system business, it is necessary to combine multiple storage servers with Only when they are combined in a specific way and used externally as a storage system can they meet actual needs. The smallest management unit of the storage system is the RAID array (that is, RedundantArrayofIndependentDisks, disk array, which is composed of many independent disks to form a large-capacity disk group, using individual disks to provide data. The bonus effect improves the performance of the entire disk system. Using this technology, the data is cut into many sections and stored on each disk respectively), and each storage server in the storage system uses a RAID array to manage the disks, so RAID technology is an important technology in the storage field, currently including RAID levels 0, 1, 5, 6, 10, 50, 60, they use striping, mirroring, and parity to ensure data reliability, and concurrently process I/O (Input/Output, input/output) through multiple disk drives in the array ) to improve the I/O performance of the RAID array.

In the past, soft RAID storage technology was used in storage servers. Some algorithms, data management, and some functions in storage were managed and implemented by software. The whole process was not involved in hardware. Since there was no hardware to share complex functions such as RAID array geometric space management, Therefore, the storage performance of the storage server was low in the past. In recent years, with the rapid development of semiconductor chips, hard RAID storage technology (RAID card, disk array card) has emerged at the historic moment. RAID card is to improve the I/O performance and data security of storage center The hard RAID storage technology proposed on the basis of technology, as the name implies, the hard RAID storage technology is to hand over some algorithms, data management and some functions in the soft RAID storage technology to hardware management and implementation, so as to improve the I/O performance and data security. In terms of physical connection, a RAID card is a functional board that organizes the disks connected to the storage server into multiple RAID arrays according to the RAID level. The technician inserts one or more RAID cards into the stored on the server for user use.

The storage capacity of a large storage center is huge, but the capacity of a single disk is very limited. Therefore, the RAID card currently deployed on a large storage server needs to have hundreds of thousands of disks attached to it. The process of attaching hundreds of thousands of disks under the management of the RAID card will consume a lot of time, resulting in a decline in user experience, and there is a risk of errors when the disks attached to the RAID card are managed in the case of an emergency I/O task in the foreground. At present, the technology in the industry adopts the Bit organization method for the management of the disks attached to the RAID card. This is a one-dimensional linear table composed of bits, where each Bit represents a disk. This bit organization method is insufficient in large-capacity RAID arrays. The bit organization method will occupy a large amount of memory resources, and it will take a long time for each RAID card in a large storage center to be connected to a disk under management. When users increase When using a RAID card, it will consume more time. When the user needs a RAID card to manage 1PB of storage space, if a disk has a capacity of 16G, the RAID card needs to manage 1PB/16G disks, that is, 65536 disks. According to the corresponding bit of a disk, 65536 bits are required, which is converted to (65536 /8) 8192 bytes, thus it can be concluded that 8192 bytes of memory space are needed to store Bit bits, and 8192 bytes occupy a large amount of memory resource space, which will slow down the disk process under RAID card management and affect users The services performed on the RAID card degrade the user experience of using the RAID card. That is, the bit organization method consumes a large amount of memory resources, which not only increases the time-consuming management of the attached disks when the RAID card is started, but also reduces the user experience of using the RAID card, and in the case of emergency I/O tasks in the foreground, there is a problem with the RAID card management. Risk of disk failure.

Contents of the invention

In view of this, the purpose of the present invention is to provide a disk management method, device, equipment and medium, which can effectively reduce the memory resource occupancy rate and speed up the disk array card to perform the task of attaching the disk. The specific plan is as follows:

In a first aspect, the present application discloses a disk management method, including:

Acquire a threshold domain, and define a threshold for a disk array card according to the size of the threshold domain;

Using the bits contained in the threshold as the bitmap of the disk, performing the hanging operation on the corresponding disks in the current threshold in sequence by moving the threshold pointer in the threshold;

After all the disks corresponding to the current threshold are connected, the threshold is moved, and the corresponding disks in the moved threshold are used to perform the connection operation in sequence by using the threshold pointer until all the disks in the disk array card are connected.

Optionally, after all the disks corresponding to the current threshold are installed, move the threshold, and use the threshold pointer to perform the installation operation on the disks corresponding to the moved threshold in sequence until the disk array card During the process of attaching all disks, including:

determining the number of moves of the threshold and the offset of the threshold pointer;

According to the number of bits occupied by the threshold, the number of times of movement, the offset and the total number of disks in the disk array card, it is judged whether all the disks in the disk array card have been connected.

Optionally, according to the number of bits occupied by the threshold, the number of times of movement, the offset, and the total number of disks in the disk array card, it is judged whether all the disks in the disk array card are Before the hanging is completed, it also includes:

The total number of disks in the disk array card is determined according to the capacity of the disk array card.

Optionally, according to the number of bits occupied by the threshold, the number of times of movement, the offset, and the total number of disks in the disk array card, it is judged whether all the disks in the disk array card are The hanging is completed, including:

According to the number of bits occupied by the threshold, the number of times of movement, and the offset, determine the number of disks in the disk array card that have performed the downlink operation;

If the number of disks in the disk array card that have performed the downlink operation is equal to the total number of disks in the disk array card, it is determined that all the disks in the disk array card have been downlinked.

Optionally, performing the hanging operation on the corresponding disks within the current threshold in sequence by moving the threshold pointer within the threshold includes:

According to the sign in the bit pointed by the current threshold pointer, it is judged whether the disk pointed to by the threshold pointer is currently installed; the bit in the threshold is used to indicate whether the corresponding disk is installed.

Optionally, after the judging whether the disk currently pointed to by the threshold pointer has been downloaded, it also includes:

If the disk currently pointed to by the threshold pointer has not been mounted yet, perform a mount operation on the disk currently pointed to by the threshold pointer.

Optionally, after the judging whether the disk currently pointed to by the threshold pointer has been downloaded, it also includes:

If the disk currently pointed by the threshold pointer has been mounted, move the threshold pointer to point to the next bit.

Optionally, the process of sequentially performing the hanging operation on the corresponding disks within the current threshold by moving the threshold pointer within the threshold further includes:

According to the size relationship between the offset of the threshold pointer within the threshold and the number of bits occupied by the threshold, it is judged whether all the disks corresponding to the current threshold have been installed.

Optionally, moving the threshold after all the corresponding disks within the current threshold are downlinked includes:

If all the corresponding disks within the current threshold have been mounted, the threshold is moved so that the bits corresponding to the threshold are all cleared.

Optionally, after the judging whether all the disks corresponding to the current threshold have been hung up, it also includes:

If all the corresponding disks within the current threshold have unmounted disks, continue to execute the step of sequentially performing the demounting operation on the corresponding disks within the current threshold by moving the threshold pointer within the threshold.

Optionally, the acquiring threshold domain includes:

Apply for the first unsigned data of the target byte size from the memory;

Expanding the first unsigned data to obtain a corresponding target number of bits, and obtaining a threshold field based on the target number of bits.

Optionally, said expanding the first unsigned data to obtain the corresponding target number of bits, and obtaining a threshold field based on the target number of bits includes:

Through the disk management hardware module of the firmware layer in the disk array card, the operation of expanding the first unsigned data to obtain the corresponding target quantity bits and obtaining the threshold field based on the target quantity bits is performed.

Optionally, before using the bits contained in the threshold as the bitmap of the disk, and using the threshold pointer to sequentially perform the downloading operation on the corresponding disks within the current threshold, the method also includes:

Applying for second unsigned data of the target byte size from memory, and using the second unsigned data as a threshold pointer.

Optionally, using the second unsigned data as a threshold pointer includes:

The operation of using the second unsigned data as a threshold pointer is performed by the disk management hardware module of the firmware layer in the disk array card.

Optionally, the defining the threshold for the disk array card according to the size of the threshold domain includes:

According to the size of the threshold domain, define the threshold for the disk array card through macro definition;

Correspondingly, the disk management method also includes:

Modify the threshold by modifying the character string in the macro definition.

Optionally, performing the hanging operation on the corresponding disks within the current threshold in sequence by moving the threshold pointer within the threshold includes:

Determining the logical device number of the initial downlink disk in the disk array card;

Adjusting the threshold pointer to the first bit in the threshold, and performing a download operation from the initial download disk according to the logical device number.

Optionally, the determining the logical device number of the initial attached disk in the disk array card includes:

If the target logical device number sent by the user is obtained, the target logical device number is used as the logical device number of the initial downlink disk in the disk array card;

If the target logical device number sent by the user is not obtained, the first logical device number is used as the logical device number of the first connected disk in the disk array card.

In a second aspect, the present application discloses a disk management device, including:

A threshold determination module, configured to obtain a threshold domain, and define a threshold for a disk array card according to the size of the threshold domain;

The hanging module is used to use the bits contained in the threshold as the bitmap of the disk, and perform the hanging operation sequentially on the corresponding disks in the current threshold by moving the threshold pointer within the threshold;

The threshold moving module is used to move the threshold after all the disks corresponding to the current threshold are mounted, and use the threshold pointer to perform the mounting operation on the disks corresponding to the moved threshold in sequence until all disks in the disk array card Disk installation is complete.

In a third aspect, the present application discloses an electronic device, comprising:

memory for storing computer programs;

A processor, configured to execute the computer program to implement the aforementioned disk management method.

In a fourth aspect, the present application discloses a computer-readable storage medium for storing a computer program; wherein when the computer program is executed by a processor, the aforementioned disk management method is implemented.

In the present application, the threshold field is obtained, and the threshold for the disk array card is defined according to the size of the threshold field; the bits contained in the threshold are used as the bitmap of the disk, and the threshold pointer is moved within the threshold to the current threshold. The corresponding disks are attached in sequence; after all the corresponding disks within the current threshold are attached, the threshold is moved, and the threshold pointer is used to perform the installation operation on the corresponding disks within the moved threshold in turn until the disk array All the disks in the card have been attached. It can be seen that using the threshold and the threshold pointer to manage the mounting operation of all the disks in the disk array card through the threshold moving algorithm only needs to occupy resources of the size of the threshold field and the threshold pointer, effectively reducing the memory resource occupation rate, and speeding up the disk array card to perform the mounting operation. The speed of disk tasks.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a flow chart of a disk management method provided by the present application;

Fig. 2 is a structural diagram of a RAID card in a specific storage system provided by the present application;

FIG. 3 is a flow chart of a specific disk management method provided by the present application;

FIG. 4 is a flow chart of a specific disk management method provided by the present application;

FIG. 5 is a schematic structural diagram of a disk management device provided by the present application;

FIG. 6 is a structural diagram of an electronic device provided by the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the prior art, the management of the disks attached to the RAID card adopts the Bit organization method. This Bit organization method is insufficient in large-scale and large-capacity RAID arrays. The Bit organization method will occupy a large amount of memory resources, which will lead to large storage centers. It takes a long time to attach disks to each RAID card under management. When the user adds a RAID card, it will consume more time. In order to overcome the above-mentioned technical problems, the present application proposes a disk management method, which can effectively reduce the memory resource occupancy rate and speed up the disk array card's execution of the attached disk task.

The embodiment of the present application discloses a disk management method, as shown in FIG. 1, the method may include the following steps:

Step S11: Obtain a threshold domain, and define a threshold for a disk array card according to the size of the threshold domain.

In this embodiment, the threshold field is obtained first, and then the threshold for the disk array card is defined according to the size of the threshold field. The above threshold field may specifically be generated based on unsigned data with a reserved target byte size. Specifically, the above-mentioned acquisition threshold field may include: applying for the first unsigned data of the target byte size from the memory; expanding the first unsigned data to obtain the corresponding target number of bits, and obtaining the corresponding target number of bits based on the target number of bits threshold domain. For example, expand the first unsigned four-byte data into 32 Bits, and use these 32 Bits to form a threshold that can manage 32 disks at a time.

In this embodiment, said expanding the first unsigned data to obtain the corresponding target number bits, and obtaining the threshold field based on the target number bits may include: through the disk management of the firmware layer in the disk array card The hardware module executes the operation of expanding the first unsigned data to obtain a corresponding target number of bits, and obtaining a threshold field based on the target number of bits.

It can be understood that, for example, FIG. 2 shows a structural diagram of a RAID card in a storage system, the disk management hardware module indicated by 110, and the firmware layer in the RAID card includes a driver program, a RAID card kernel, a file system, a management monitoring system, and a disk management system. Hardware modules, etc., the RAID card kernel and file system can provide functions for accessing files and logical unit numbers, as well as the management of these functions. The driver and processor of the firmware layer in the RAID card execute some program instructions for processing the host computer. I/O requests. As shown in FIG. 2 , disk group 1 indicated by 130 constitutes RAID array No. 1, disk group 2 constitutes RAID array No. 2, and so on, disk group N constitutes RAID array No. N. The RAID array No. 1, the RAID array No. 2...the RAID array N together form a RAID group. The RAID card controller indicated by 140 is responsible for the software processing function in the RAID card. The RAID card controller is dedicated to realize the software function, and the hardware module executes some algorithms, data management and other functions, so as to realize the separation of software and hardware. The hardware and software are separate Work independently and in parallel, and improve the performance of the disks under RAID card management through the system architecture design of the separation of software and hardware. In this embodiment, the client user inputs all the disks that need to be attached to the RAID card, and returns to the user after the RAID card completes attaching all the disks. For example, the disk management hardware module expands the first unsigned four-byte data into 32 Bits, and uses 32 Bits to form the threshold for managing 32 disks, and the disk management hardware module converts the second unsigned four-byte The data is used as a threshold pointer.

Adopting the design idea of separation of software and hardware, hardware and software work independently and in parallel, and a new disk management hardware module is added to the hardware. The RAID card controller is responsible for software functions. Through the system architecture design of the separation of software and hardware, the RAID card executes the attached disk. Data security and I/O performance during tasks.

In this embodiment, the defining the threshold for the disk array card according to the size of the threshold domain may include: defining the threshold for the disk array card through a macro definition according to the size of the threshold domain; correspondingly, the A disk management method may further include: modifying the threshold by modifying a character string in the macro definition. Macro definition is also called macro substitution, macro replacement, referred to as "macro", the format is "#define identifier string", the identifier is the so-called symbol constant, also called "macro name", after using the macro definition It is convenient for unified modification. If the underlying code contains multiple threshold values, you can directly modify the string in the definition once when you need to modify the threshold.

Step S12: Use the bits included in the threshold as a bitmap of the disk, and sequentially perform the attaching operation on the corresponding disks within the current threshold by moving the threshold pointer within the threshold.

In this embodiment, the bits included in the above-mentioned threshold are used as the bitmap of the disk, and by moving the threshold pointer within the threshold, the corresponding disks in the current threshold are sequentially connected to the disk. The size of the above-mentioned threshold pointer is the same as the threshold, specifically Can also be generated for unsigned data based on the reserved target byte size. Specifically, before using the bits contained in the threshold as the bitmap of the disk, and using the threshold pointer to sequentially perform the hanging operation on the corresponding disks within the current threshold, it may also include: applying for the second byte of the target byte size from the memory unsigned data, and use the second unsigned data as a threshold pointer. For example, an unsigned four-byte data is expanded into 32 Bits, and 32 Bits are used to form a threshold for managing 32 disks, and another unsigned four-byte data is a threshold pointer.

In this embodiment, using the second unsigned data as a threshold pointer may include: performing the using the second unsigned data as a threshold through a disk management hardware module of the firmware layer in the disk array card. Pointer operations. That is, the disk management hardware module uses the second unsigned data as a threshold pointer, thereby tracking all the disks attached to the RAID card through the two unsigned data. That is, a new disk management hardware module is added to the RAID card, and this module maintains unsigned data of two target byte sizes,

Taking 32 Bits as an example, the 32 Bits are bitmaps of 32 disks that need to perform download tasks within the management threshold, and the threshold pointer DoorPointer points to the disks that need to perform download tasks. Use PK_Bit_DOOR as the threshold size defined by the macro, and the default is 32, because the threshold threshold of 32 Bits is used at this time; of course, unsigned eight-byte data can also be used, so that 64 Bits after expanding the unsigned eight-byte data Bit threshold, then the threshold size defined by the corresponding PK_Bit_DOOR macro is 64. The 32-bit threshold is shown below:

；

;

In this embodiment, after the step of moving the threshold pointer within the threshold and sequentially performing the attaching operations on the disks corresponding to the current threshold, it may further include: modifying the contents of the bits corresponding to the attached disks. That is, after each disk is installed, modify the content of the disk corresponding to the bit in the threshold, for example, use 0 to indicate that it is not installed, and 1 to indicate that it is installed, or use 1 to indicate that it is not installed and 0 to indicate that it is installed.

In this embodiment, the sequentially performing the downloading operation on the corresponding disks within the current threshold by moving the threshold pointer within the threshold may include: judging the current Whether the disk pointed by the threshold pointer has been mounted; the bits in the threshold are used to indicate whether the corresponding disk has been mounted. That is, before the disk is mounted, it is judged according to the symbol in the bit pointed by the current threshold pointer whether the corresponding disk has performed the mount operation, and then the corresponding operation is performed according to the judgment result.

In this embodiment, after the judging whether the disk currently pointed to by the threshold pointer has been downloaded, it may further include: if the disk currently pointed to by the threshold pointer has not been downloaded, then the disk currently pointed to by the threshold pointer Perform the hanging operation. In this embodiment, after the judging whether the disk currently pointed to by the threshold pointer has been mounted, it may further include: if the disk currently pointed to by the threshold pointer has been mounted, moving the threshold pointer to point to the next bit . That is, if the disk pointed to by the current threshold pointer has not been mounted, then the disk is mounted. If it has been mounted, the threshold pointer is moved to point to the next bit, so that the next disk can be mounted.

In this embodiment, the process of sequentially performing the attaching operation on the corresponding disks within the current threshold by moving the threshold pointer within the threshold may further include: according to the offset of the threshold pointer within the threshold and the The size relationship between the number of bits occupied by the above-mentioned thresholds is used to judge whether all the disks corresponding to the current thresholds have been downloaded. In this embodiment, moving the threshold after all the disks corresponding to the current threshold have been downloaded may include: if all the disks corresponding to the current threshold have been downloaded, moving the threshold so that the The bits corresponding to the threshold are all cleared. In this embodiment, after the judging whether all the disks corresponding to the current threshold have been downloaded, it may also include: if there are disks that have not been downloaded in all the disks corresponding to the current threshold, then continue to execute the above-mentioned process. The step of moving the threshold pointer within the threshold and performing the demounting operation sequentially on the corresponding disks within the current threshold.

That is, for a large number of disks to be downloaded, in this embodiment, a part of the disk is selected each time through the threshold, and the disks are mounted sequentially. Therefore, it is necessary to determine whether all the corresponding disks within the current threshold are mounted, and if so, clear the threshold to execute the download. A part of the disk is hung under. Specifically, by checking the size relationship between the offset of the threshold pointer within the threshold and the number of bits occupied by the threshold, it is judged whether the threshold pointer traverses all the bits of the current threshold. That is to say, the RAID card mounts all the disks within the threshold defined by the PK_Bit_DOOR macro at one time, and when all the disks within the threshold are mounted, the threshold is moved, and then all the disks within the threshold after the movement are mounted, and the cycle is repeated. , until the RAID card has installed all the disks specified by the user to be installed.

Step S13: After all the corresponding disks within the current threshold have been installed, move the threshold, and use the threshold pointer to perform the installation operation on the corresponding disks within the moved threshold in sequence until all the disks in the disk array card are installed Finish.

That is, by moving the threshold and traversing all the disks by moving the threshold pointer after each threshold movement, the downlink operation of all the disks in the disk array card is realized.

In this embodiment, after all the disks corresponding to the current threshold are installed, the threshold is moved, and the disks corresponding to the moved threshold are sequentially installed using the threshold pointer until the disk array card The process of attaching all the disks in , includes the following steps:

S131: Determine the movement times of the threshold and the offset of the threshold pointer;

S132: According to the number of bits occupied by the threshold, the number of times of movement, the offset, and the total number of disks in the disk array card, determine whether all the disks in the disk array card have been attached.

In this embodiment, according to the number of bits occupied by the threshold, the number of moves, the offset, and the total number of disks in the disk array card, it is judged whether Before the completion of all downloading, it may further include: determining the total number of disks in the disk array card according to the capacity of the disk array card. The ratio of the total capacity required by the specific disk array card to the capacity of a single disk is taken as the total number of disks in the disk array card.

In this embodiment, according to the number of bits occupied by the threshold, the number of moves, the offset, and the total number of disks in the disk array card, it is judged whether All downloading is completed, which may include: determining the number of disks in the disk array card that have performed the downloading operation according to the number of bits occupied by the threshold, the number of times of movement, and the offset; if the disk If the number of disks in the array card for which the downlink operation has been performed is equal to the total number of disks in the disk array card, it is determined that all the disks in the disk array card have been downlinked. That is, according to the product of the number of bits occupied by the threshold and the number of threshold moves, combined with the offset of the threshold pointer within the current threshold, the number of disks that have been attached to the disk array card has been executed. If the number of disks to be attached is equal to the total number of disks in the disk array card, it can be determined that all disks in the disk array card have been attached.

As can be seen from the above, in this embodiment, the threshold field is obtained, and the threshold for the disk array card is defined according to the size of the threshold field; the bits contained in the threshold are used as the bitmap of the disk, and the threshold index is moved by moving the threshold in the threshold. Carry out the mount operation in turn for the corresponding disks within the current threshold; move the threshold after all the disks corresponding to the current threshold have been mounted, and use the threshold pointer to perform mount operations on the corresponding disks within the moved threshold in sequence until All the disks in the disk array card are attached. It can be seen that using the threshold and the threshold pointer to manage the mounting operation of all the disks in the disk array card through the threshold moving algorithm only needs to occupy resources of the size of the threshold field and the threshold pointer, effectively reducing the memory resource occupation rate, and speeding up the disk array card to perform the mounting operation. The speed of disk tasks.

The embodiment of the present application discloses a specific disk management method, as shown in Figure 3, the method may include the following steps:

Step S21: Obtain a threshold domain, and define a threshold for a disk array card according to the size of the threshold domain.

Step S22: Using the bits contained in the threshold as the bitmap of the disk, determine the logical device number of the first connected disk in the disk array card.

That is, firstly, specify the logical device number of the first attached disk, that is, the first disk to be attached to the RAID card.

In this embodiment, the determination of the logical device number of the first attached disk in the disk array card may include: if the target logical device number sent by the user is obtained, using the target logical device number as the disk array The logical device number of the first connected disk in the card; if the target logical device number sent by the user is not obtained, the first logical device number is used as the logical device number of the first connected disk in the disk array card. That is, if the user does not specify which disk to start from, the disk can be mounted from the disk whose logical device number is zero. The disk can be hung up.

Step S23: Adjust the threshold pointer to the first bit in the threshold, and perform a download operation from the initial download disk according to the logical device number.

That is, the initial attached disk corresponds to the first bit in the first disk, and the attached disk is executed from here.

Step S24: After all the disks corresponding to the current threshold are installed, move the threshold, and use the threshold pointer to sequentially perform the installation operation on the corresponding disks within the moved threshold until all the disks in the disk array card are installed Finish.

Wherein, for the specific process of the above steps S21 and S24, reference may be made to the corresponding content disclosed in the foregoing embodiments, and details are not repeated here.

As can be seen from the above, in the present embodiment, the bits contained in the threshold are used as the bitmap of the disk to determine the logical device number of the initial hanging disk in the disk array card; the threshold pointer is adjusted to the first threshold in the threshold. One bit, according to the logical device number, perform the downloading operation from the initial downloading disk, thereby specifying the starting position of the downloading through the logical device number.

For example, Figure 4 shows a specific disk management method, the main steps are as follows:

Step 1: Apply for two unsigned four-byte data from the memory, and save the ldn number (logicdevicenumber, used to represent the logical device number of the disk) of the first disk to be connected to the RAID card in the memory.

Step 2: Set the first threshold from the first disk that needs to be attached to the RAID card, for example, define the first threshold for executing the task of attaching the disk as the PK_Bit_DOOR macro definition threshold. Define PK_Bit_DOOR as 32.

Step 3: Enter the ldn number of the disk to which the RAID card executes the first task to be attached, and calculate the number of disks to be attached to the RAID card according to the capacity of the RAID card.

Step 4: Set the DoorPointer threshold pointer to point to the first Bit in the threshold, and judge whether the Bit pointed to by the DoorPointer threshold pointer is 1. If it is 1, skip this Bit and move the threshold pointer to the next Bit. If it is 0, execute the attached task of the disk identified by the bit, and move to the next bit after the execution is completed.

Step 5: Every time the DoorPointer threshold pointer moves one bit, it is necessary to judge the threshold offset, that is, to judge whether the threshold offset is equal to the PK_Bit_DOOR value, and if it is equal, move the threshold by 32 bits, and move the DoorPointer threshold pointer to the threshold Header (threshold header refers to the first Bit in the threshold). The fourth and fifth steps are further explained as follows: the disk management hardware module initializes the first unsigned four-byte data to 0, so that after the data is expanded into 32 bits, each bit is 0, so the first All disks within a threshold need to execute the downloading task. When the 32 bits in the first threshold become 0, that is, after all 32 disks have completed the downloading task, the threshold is moved by 32 bits. It is to assign the first unsigned four-byte data to zero, and then point the DoorPointer threshold pointer to the first Bit in the threshold to start executing the content described in the fifth step.

Step 6: According to the number of disks obtained in step 3, the number of threshold moves, and the offset of the DoorPointer threshold pointer, determine whether the task of attaching the disks to the RAID card has been completed.

To sum up, the programming language is used for algorithm implementation, the design combines threshold and bitmap, and utilizes the fast and efficient characteristics of threshold and threshold pointer. The memory resources occupied are two unsigned four-byte data, which greatly reduces memory Resource occupancy rate, at the same time, without increasing the hardware, it can improve the efficiency of the RAID card to perform the task of attaching the disk, and increase the company's core competitiveness in the RAID card market; without increasing the hardware, it can ensure data security and improve the performance of the RAID card The efficiency of the task of attaching the disk, reducing the length of time for attaching the disk when the RAID card is started, and improving the user experience of using the RAID card, and at the same time reducing the risk of errors in the disk under the RAID card management in the case of emergency I/O tasks in the foreground.

Correspondingly, the embodiment of the present application also discloses a disk management device, as shown in Figure 5, the device includes:

Threshold determination module 11 is used to obtain the threshold domain, and define the threshold for the disk array card according to the size of the threshold domain;

The hanging module 12 is used to use the bits contained in the threshold as the bitmap of the disk, and perform the hanging operation sequentially on the corresponding disks in the current threshold by moving the threshold pointer in the threshold;

The threshold moving module 13 is used to move the threshold after all the disks corresponding to the current threshold have been hung up, and use the threshold pointer to perform the hanging operation on the corresponding disks in the moved threshold in turn until the disk array card All disks are attached.

As can be seen from the above, in this embodiment, the threshold field is obtained, and the threshold for the disk array card is defined according to the size of the threshold field; the bits contained in the threshold are used as the bitmap of the disk, and the threshold index is moved by moving the threshold in the threshold. Carry out the mount operation in turn for the corresponding disks within the current threshold; move the threshold after all the disks corresponding to the current threshold have been mounted, and use the threshold pointer to perform mount operations on the corresponding disks within the moved threshold in sequence until All the disks in the disk array card are attached. It can be seen that using the threshold and the threshold pointer to manage the mounting operation of all the disks in the disk array card through the threshold moving algorithm only needs to occupy resources of the size of the threshold field and the threshold pointer, effectively reducing the memory resource occupation rate, and speeding up the disk array card to perform the mounting operation. The speed of disk tasks.

In some specific embodiments, the threshold moving module 13 may specifically include:

an offset determining unit, configured to determine the number of times of movement of the threshold and the offset of the threshold pointer;

The download completion judging unit is used to judge all disks in the disk array card according to the number of bits occupied by the threshold, the number of times of movement, the offset and the total number of disks in the disk array card Whether all downloads are completed.

In some specific embodiments, the disk management device may specifically include:

The total number of disks determining unit is configured to determine the total number of disks in the disk array card according to the capacity of the disk array card.

In some specific embodiments, the download completion judging unit may specifically include:

The unit for determining the number of attached disks is configured to determine the number of disks in the disk array card that have performed the attached operation according to the number of bits occupied by the threshold, the number of times of movement, and the offset;

The download completion judging unit is configured to determine that all the disks in the disk array card have been downloaded if the number of disks in the disk array card that have performed the download operation is equal to the total number of disks in the disk array card.

In some specific embodiments, the hanging module 12 may specifically include:

The disk hanging judging unit is used for judging whether the disk pointed to by the current threshold pointer has been hung up according to the symbol in the bit pointed by the current threshold pointer; the bit in the threshold is used to represent whether the corresponding disk is Be hung up.

In some specific embodiments, the hanging module 12 may specifically include:

The hanging unit is used to perform the hanging operation on the disk pointed to by the threshold pointer after judging whether the disk pointed to by the threshold pointer has been hung up, if the disk pointed to by the threshold pointer has not been hung up .

In some specific embodiments, the hanging module 12 may specifically include:

The pointer moving unit is configured to move the threshold pointer to point to the next bit if the disk currently pointed to by the threshold pointer has been downloaded after judging whether the disk pointed to by the threshold pointer is completed.

In some specific embodiments, the hanging module 12 may specifically include:

The disk download completion judging unit within the threshold is used to judge whether all the corresponding disks within the current threshold are connected according to the size relationship between the offset of the threshold pointer within the threshold and the number of bits occupied by the threshold Finish.

In some specific embodiments, the threshold moving module 13 may specifically include:

The moving unit is configured to move the threshold so that all the bits corresponding to the threshold are cleared to zero if all corresponding disks within the current threshold have been installed.

In some specific embodiments, the hanging module 12 may specifically include:

The hanging unit is used to continue to perform the process of moving within the threshold if all the disks corresponding to the current threshold have disks that have not been hung up after judging whether all the disks corresponding to the current threshold have been hung. The threshold points to the steps of performing the demounting operation on the corresponding disks within the current threshold in sequence.

In some specific embodiments, the threshold determination module 11 may specifically include:

The first unsigned data acquisition unit is used to apply for the first unsigned data of the target byte size from the memory;

A threshold field determining unit, configured to expand the first unsigned data to obtain a corresponding target number of bits, and obtain a threshold field based on the target number of bits.

In some specific embodiments, the threshold domain determination unit is further configured to perform the expansion of the first unsigned data to obtain the corresponding target number of bits through the disk management hardware module of the firmware layer in the disk array card. , obtaining the operation of the threshold field based on the target number of bits.

In some specific embodiments, the threshold determination module 11 may specifically include:

The second unsigned data acquisition unit is configured to apply for second unsigned data of a target byte size from memory, and use the second unsigned data as a threshold pointer.

In some specific embodiments, the second unsigned data acquisition unit is further configured to perform the operation of using the second unsigned data as a threshold pointer through the disk management hardware module of the firmware layer in the disk array card .

In some specific embodiments, the threshold determination module 11 may specifically include:

A threshold definition unit, configured to define the threshold for the disk array card through macro definition according to the size of the threshold domain;

In some specific embodiments, the disk management device further includes:

a threshold modifying unit, configured to modify the threshold by modifying the character string in the macro definition.

In some specific embodiments, the hanging module 12 may specifically include:

a logical device number determining unit, configured to determine the logical device number of the initial downlink disk in the disk array card;

A pointer position adjustment unit, configured to adjust the threshold pointer to the first bit within the threshold, and perform a download operation from the initial download disk according to the logical device number.

In some specific embodiments, the logical device number determining unit may specifically include:

The first logical device number determining unit is configured to use the target logical device number as the logical device number of the initial downlink disk in the disk array card if the target logical device number sent by the user is obtained;

The second logical device number determination unit is configured to use the first logical device number as the logical device number of the first attached disk in the disk array card if the target logical device number sent by the user is not obtained.

Further, the embodiment of the present application also discloses an electronic device, as shown in FIG. 6 , and the content in the figure should not be regarded as any limitation on the application scope of the present application.

FIG. 6 is a schematic structural diagram of an electronic device 20 provided by an embodiment of the present application. The electronic device 20 may specifically include: at least one processor 21 , at least one memory 22 , a power supply 23 , a communication interface 24 , an input/output interface 25 and a communication bus 26 . Wherein, the memory 22 is used to store a computer program, and the computer program is loaded and executed by the processor 21 to implement relevant steps in the disk management method disclosed in any of the foregoing embodiments.

In this embodiment, the power supply 23 is used to provide working voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and external devices, and the communication protocol it follows is applicable Any communication protocol in the technical solution of the present application is not specifically limited here; the input and output interface 25 is used to obtain external input data or output data to the external, and its specific interface type can be selected according to specific application needs, here Not specifically limited.

In addition, the memory 22, as a resource storage carrier, can be a read-only memory, random access memory, magnetic disk or optical disk, etc., and the resources stored thereon include the operating system 221, computer programs 222, and data 223 including thresholds, etc., and the storage method Can be temporary storage or permanent storage.

Wherein, the operating system 221 is used to manage and control each hardware device and computer program 222 on the electronic device 20, so as to realize the calculation and processing of the massive data 223 in the memory 22 by the processor 21, which can be WindowsServer, Netware, Unix, Linux wait. In addition to computer programs 222 that can be used to complete the disk management method performed by the electronic device 20 disclosed in any of the foregoing embodiments, the computer programs 222 can further include computer programs that can be used to complete other specific tasks.

Further, the embodiment of the present application also discloses a computer storage medium, the computer storage medium stores computer-executable instructions, and when the computer-executable instructions are loaded and executed by a processor, the implementation of any one of the foregoing embodiments is disclosed. Disk Management method steps.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for relevant details, please refer to the description of the method part.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

A disk management method, device, equipment, and medium provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The descriptions of the above embodiments are only used to help understanding The method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation of the invention.

Claims (18)

1. A method of disk management, comprising:

acquiring a threshold domain, and defining a threshold for a disk array card according to the size of the threshold domain;

taking bits contained in the threshold as bitmaps of the disks, and sequentially executing a hooking operation on the corresponding disks in the current threshold by moving a threshold pointer in the threshold;

moving the threshold after all the disks corresponding to the current threshold are hung, and sequentially executing hanging operation on the disks corresponding to the moved threshold by using the threshold finger until all the disks in the disk array card are hung;

wherein the acquisition threshold field includes:

applying for first unsigned data of a target byte size from memory;

expanding the first unsigned data to obtain corresponding target number bits, and obtaining a threshold domain based on the target number bits;

the method for processing the disk in the current threshold includes the steps of:

applying for second unsigned data with target byte size from the memory, and taking the second unsigned data as a threshold pointer.

2. The disk management method according to claim 1, wherein after the hooking of all the disks corresponding to the current threshold is completed, moving the threshold, and sequentially performing hooking operations on the disks corresponding to the moved threshold by using the threshold index until all the disks in the disk array card are hooked, the method comprises:

determining the number of times of movement of the threshold and the offset of the threshold pointer;

and judging whether all the disks in the disk array card are hung down or not according to the number of bits occupied by the threshold, the moving times, the offset and the total number of the disks in the disk array card.

3. The disk management method according to claim 2, wherein before determining whether all disks in the disk array card are hung down according to the number of bits occupied by the threshold, the number of movements, the offset, and the total number of disks in the disk array card, further comprising:

and determining the total number of the magnetic disks in the magnetic disk array card according to the capacity of the magnetic disk array card.

4. The disk management method according to claim 2, wherein the determining whether all disks in the disk array card are hung down according to the number of bits occupied by the threshold, the number of movements, the offset, and the total number of disks in the disk array card includes:

Determining the number of the magnetic disks which have executed the hanging operation in the magnetic disk array card according to the number of the bit occupied by the threshold, the moving times and the offset;

and if the number of the disks which have executed the hooking operation in the disk array card is equal to the total number of the disks in the disk array card, judging that all the disks in the disk array card are hooked.

5. The disk management method according to claim 1, wherein the sequentially performing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold comprises:

judging whether the disk pointed by the threshold pointer is hung down or not according to the symbol in the bit pointed by the threshold pointer; the bits in the threshold are used to characterize whether the corresponding disk is down-hung.

6. The method for managing magnetic disk according to claim 5, wherein after said determining whether the magnetic disk pointed by the threshold pointer is hung up, further comprising:

and if the disk pointed by the current threshold pointer is not hung, executing hanging operation on the disk pointed by the current threshold pointer.

7. The method for managing magnetic disk according to claim 5, wherein after said determining whether the magnetic disk pointed by the threshold pointer is hung up, further comprising:

And if the disk pointed by the threshold pointer is hung down, moving the threshold pointer to point to the next bit.

8. The disk management method according to claim 1, wherein in the process of sequentially performing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold, the method further comprises:

and judging whether all corresponding disks in the current threshold are hung down or not according to the size relation between the offset of the threshold pointer in the threshold and the bit number occupied by the threshold.

9. The disk management method according to claim 8, wherein moving the threshold after all disks corresponding to the current threshold have been hung up comprises:

and if all the disks corresponding to the current threshold are hung down, moving the threshold to clear the bit corresponding to the threshold.

10. The method for managing magnetic disks according to claim 8, wherein after determining whether all magnetic disks corresponding to the current threshold are hung up, further comprising:

if all the disks corresponding to the current threshold have the disks which are not hung, continuing to execute the step of sequentially executing the hanging operation on the disks corresponding to the current threshold by moving the threshold pointer in the threshold.

11. The disk management method according to claim 1, wherein the expanding the first unsigned data to obtain a corresponding target number of bits, and obtaining a threshold field based on the target number of bits, comprises:

and executing the operation of expanding the first unsigned data to obtain the corresponding target number of bits and obtaining a threshold domain based on the target number of bits through a disk management hardware module of a firmware layer in the disk array card.

12. The disk management method according to claim 1, wherein said taking the second unsigned data as a threshold pointer comprises:

and executing the operation of taking the second unsigned data as a threshold pointer through a disk management hardware module of a firmware layer in the disk array card.

13. The disk management method according to claim 1, wherein the defining a threshold for a disk array card according to the size of the threshold field includes:

defining a threshold for the disk array card in a macro definition mode according to the size of the threshold domain;

correspondingly, the disk management method further comprises the following steps:

the threshold is modified by modifying the string in the macro definition.

14. The disk management method according to any one of claims 1 to 13, wherein the sequentially performing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold includes:

determining a logic device number of an initial down-hung disk in the disk array card;

and adjusting the threshold pointer to the first bit in the threshold, and executing the hooking operation from the initial hooking disk according to the logic device number.

15. The disk management method according to claim 14, wherein determining the logical device number of the disk array card from which the disk is to be mounted comprises:

if the target logic device number sent by the user is obtained, the target logic device number is used as the logic device number of the initial down-hung disk in the disk array card;

and if the target logic device number sent by the user is not obtained, taking the first logic device number as the logic device number of the initial down-hung disk in the disk array card.

16. A disk management apparatus, comprising:

the threshold determining module is used for acquiring a threshold domain and defining a threshold for the disk array card according to the size of the threshold domain;

The lower hanging module is used for taking bits contained in the threshold as a bitmap of the disk, and sequentially executing lower hanging operation on the corresponding disk in the current threshold by moving a threshold pointer in the threshold;

the threshold moving module is used for moving the threshold after all the disks corresponding to the current threshold are hung, and sequentially executing hanging operation on the disks corresponding to the moved threshold by using the threshold finger until all the disks in the disk array card are hung;

the threshold determining module is used for applying for first unsigned data with the size of the target byte from the memory; expanding the first unsigned data to obtain corresponding target number bits, and obtaining a threshold domain based on the target number bits;

the disk management device is configured to apply for second unsigned data with a target byte size from the memory before sequentially performing a hooking operation on a corresponding disk in a current threshold by using a threshold pointer, and take the second unsigned data as the threshold pointer.

17. An electronic device, comprising:

a memory for storing a computer program;

a processor for executing the computer program to implement the disk management method of any one of claims 1 to 15.

18. A computer-readable storage medium storing a computer program; wherein the computer program when executed by a processor implements the disk management method of any of claims 1 to 15.

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