CN115951845B - Disk management method, device, equipment and storage medium - Google Patents
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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
Technical Field
The present invention relates to the field of storage technologies, and in particular, to a method, an apparatus, a device, and a storage medium for managing a disk.
Background
With the rapid development of industrial internet, more and more data needs to be safely and reliably stored in a data center, so that the storage technology is particularly important in the current industrial internet age. As the amount of data to be stored increases, the amount of data running on a single storage server increases, and when the capacity and security of the single storage server are insufficient to support system services, a plurality of storage servers need to be combined in a specific way to be used as a storage system, so that the actual requirement can be met. The minimum management unit of the storage system is a RAID array (i.e., a redundant array of independent disks, which is a disk array with a huge capacity, and the array is formed by combining a plurality of independent disks into a disk group with huge capacity, so that the overall disk system performance is improved by using the addition effect generated by providing data by individual disks, and using this technology to divide the data into a plurality of sections and store the sections on the individual disks respectively), and each storage server in the storage system manages the disks by using the RAID array, so that the RAID technology is an important technology in the storage field, and currently includes RAID levels 0, 1, 5, 6, 10, 50 and 60, which use stripes, mirror images and checks to ensure the data reliability, and concurrently processes I/O (Input/Output) through a plurality of disk drives in the array to improve the I/O performance of the RAID array.
In the past, soft RAID storage technology is used in the storage server, some algorithms, data management and some functions in the storage are given to software management and implementation, the whole process has no hardware participation, and the storage performance of the past storage server is lower because the hardware does not share the complex functions of RAID array geometric space management and the like. With the development of semiconductor chips at high speed in recent years, hard RAID storage technology (RAID card, disk array card) has also been developed, and RAID card is a hard RAID storage technology proposed on the basis of soft RAID storage technology in order to improve the I/O performance and data security of a storage center, so that the name of the hard RAID storage technology is that some algorithms, data management and some functions in the soft RAID storage technology are given to hardware management and implementation, so as to improve the I/O performance and data security of a storage system. In terms of physical connection, the RAID card is a functional board card for organizing the disks connected with the storage server into a plurality of RAID arrays according to RAID level, and a technician inserts one or more RAID cards into the storage server for use by a user through PCIe slots reserved by the storage server.
The storage capacity of a large storage center is huge, and the capacity of a single disk is very limited, so that a RAID card currently deployed on a large storage server needs to mount hundreds of thousands of disks. The process of hanging hundreds of thousands of disks under RAID card management consumes a lot of time, resulting in a reduced user experience and the risk of errors in hanging disks under RAID card management in the case of foreground emergency I/O tasks. The current technology in the industry adopts a Bit organization method for managing hanging a disk under a RAID card, which is a one-dimensional linear table composed of bits (bits), wherein each Bit represents a disk. The Bit organization method has the defects in the large-capacity RAID array, and occupies a large amount of memory resources, so that each RAID card in the large-capacity storage center needs a long time when managing the down-hanging disk, and when a user adds the RAID card, more time is consumed. When a user needs a storage space with 1PB capacity managed by a RAID card, if one disk has 16G capacity, the RAID card needs to manage 1PB/16G disks, namely 65536 disks, and 65536 bits are needed according to one disk corresponding to one Bit, and the storage space is converted into (65536/8) 8192 bytes, so that the storage space which needs 8192 bytes is obtained to store Bit bits, the 8192 bytes occupy a large amount of memory resource space, the process of managing the disk under the RAID card is slow, the service executed by the user on the RAID card is influenced, and the experience of the user using the RAID card is reduced. The Bit organization mode consumes a large amount of memory resources, so that the time consumed for managing the down-hanging disk is increased when the RAID card is started, the experience of a user in using the RAID card is reduced, and the risk of error of the down-hanging disk of the RAID card management exists under the condition of a foreground emergency I/O task.
Disclosure of Invention
Accordingly, the present invention is directed to a disk management method, apparatus, device, and medium, which can effectively reduce the occupancy rate of memory resources and speed up the execution of the task of hanging down a disk by a disk array card. The specific scheme is as follows:
in a first aspect, the present application discloses a disk management method, including:
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.
Optionally, after all the disks corresponding to the current threshold are hung, moving the threshold, and sequentially carrying out 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, where the process includes:
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.
Optionally, before determining whether all the disks in the disk array card are hung down according to the number of bits occupied by the threshold, the number of moving times, the offset and the total number of disks in the disk array card, the method further includes:
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.
Optionally, the determining whether all the disks in the disk array card are hung down according to the number of bits occupied by the threshold, the number of moving times, 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.
Optionally, the sequentially executing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold includes:
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.
Optionally, after the determining whether the disk pointed by the threshold pointer is hung down, the method further includes:
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.
Optionally, after the determining whether the disk pointed by the threshold pointer is hung down, the method further includes:
and if the disk pointed by the threshold pointer is hung down, moving the threshold pointer to point to the next bit.
Optionally, in the process of sequentially executing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold, the method further includes:
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.
Optionally, moving the threshold after all the disks corresponding to the current threshold are hung down, including:
and if all the disks corresponding to the current threshold are hung down, moving the threshold to clear the bit corresponding to the threshold.
Optionally, after determining whether all the disks corresponding to the current threshold are hung down, the method further includes:
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.
Optionally, the acquiring the threshold field includes:
applying for first unsigned data of a target byte size from memory;
and expanding the first unsigned data to obtain corresponding target number bits, and obtaining a threshold domain based on the target number bits.
Optionally, the expanding the first unsigned data to obtain a corresponding target number of bits, and obtaining a threshold domain based on the target number of bits includes:
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.
Optionally, before the bit included in the threshold is used as a bitmap of the disk and the corresponding disk in the current threshold is sequentially hung down by using the threshold pointer, the method further includes:
applying for second unsigned data with target byte size from the memory, and taking the second unsigned data as a threshold pointer.
Optionally, the step of using the second unsigned data as a threshold pointer includes:
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.
Optionally, the defining the threshold for the 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.
Optionally, the sequentially executing 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.
Optionally, the determining the logical device number of the initial down-mounted disk in the disk array card includes:
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.
In a second aspect, the present application discloses a disk management apparatus, including:
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;
and the threshold moving module is used for moving the threshold after all the disks corresponding to the current threshold are hung, and sequentially executing the 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.
In a third aspect, the present application discloses an electronic device comprising:
A memory for storing a computer program;
and the processor is used for executing the computer program to realize the disk management method.
In a fourth aspect, the present application discloses a computer-readable storage medium for storing a computer program; wherein the computer program when executed by the processor implements the disk management method described above.
In the application, a threshold domain is acquired, and a threshold for a disk array card is defined 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. Therefore, the threshold and the threshold pointer are utilized to manage the down-hanging operation of all the disks in the disk array card through the 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 tasks of the disk array card is accelerated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a disk management method provided in the present application;
FIG. 2 is a block diagram of a RAID card in a specific storage system provided herein;
FIG. 3 is a flowchart of a specific disk management method provided in the present application;
FIG. 4 is a flowchart of a specific disk management method provided in the present application;
FIG. 5 is a schematic diagram of a disk management apparatus according to the present application;
fig. 6 is a block diagram of an electronic device provided in the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the prior art, a Bit organization mode is adopted for the management of hanging a disk under a RAID card, the Bit organization mode has a defect in a large-capacity RAID array, and occupies a large amount of memory resources, so that each RAID card in a large storage center needs a long time when hanging the disk under the management, and when a user increases the RAID card, more time is consumed. In order to overcome the technical problems, the application provides a disk management method which can effectively reduce the occupancy rate of memory resources and accelerate the speed of executing the task of hanging down a disk by a disk array card.
The embodiment of the application discloses a disk management method, referring to fig. 1, the method may include the following steps:
step S11: and acquiring a threshold domain, and defining a threshold for the disk array card according to the size of the threshold domain.
In this embodiment, a threshold field is first obtained, and then a threshold for the disk array card is defined according to the size of the threshold field, where the threshold field may specifically be generated based on unsigned data of the reserved target byte size. Specifically, the acquiring the threshold field may include: applying for first unsigned data of a target byte size from memory; and expanding the first unsigned data to obtain corresponding target number bits, and obtaining a threshold domain based on the target number bits. For example, the first unsigned four-byte data is spread out into 32 bits, and these 32 bits are used to form a threshold of threshold for managing 32 disks at a time.
In this embodiment, the expanding the first unsigned data to obtain the corresponding target number of bits, and obtaining the threshold domain based on the target number of bits may include: 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.
It will be appreciated that, for example, fig. 2 shows a block diagram of a RAID card in a storage system, where a firmware layer includes a driver, a RAID card kernel, a file system, a management monitoring system, a disk management hardware module, etc., where the RAID card kernel and the file system may provide functions of accessing files and logical unit numbers, and pipes for these functions, where the driver and the processor of the firmware layer in the RAID card execute some program instructions for processing host I/O requests. As shown in fig. 2, disk group 1, indicated at 130, comprises a RAID array No. 1, disk group 2 comprises a RAID array No. 2, and so on, disk group N comprises a RAID array No. N. RAID array No. 1, RAID array No. 2. The RAID card controller indicated by 140 is responsible for the software processing function in the RAID card, the RAID card controller specially realizes the software function, the hardware module executes some algorithms, data management and other functions, so as to realize the separation of soft and hard, the hardware and the software work independently and in parallel, and the performance of hanging a disk under RAID card management is improved through the design of a soft and hard separation system architecture. In this embodiment, the client user inputs all the disks that the RAID card needs to mount until the RAID card finishes mounting all the disks and returns to the user. For example, the disk management hardware module expands the first unsigned four-byte data into 32 Bit bits, uses the 32 Bit bits to form a threshold for managing 32 disks, and uses the second unsigned four-byte data as a threshold pointer.
The design thought of soft-hard separation is adopted, the hardware and the software work independently and in parallel, a disk management hardware module is newly added in the hardware, the RAID card controller is responsible for software functions, and the data security and I/O performance in the process of executing the task of hanging down the disk by the RAID card are improved through the design of a soft-hard separation system architecture.
In this embodiment, the defining the threshold for the disk array card according to the size of the threshold field may include: 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 may further include: the threshold is modified by modifying the string in the macro definition. The macro definition is also called macro substitution, macro replacement, macro for short, the format is "# definition identifier character string", wherein the identifier is a so-called symbol constant, also called "macro name", and the macro definition is convenient for unified modification, if the bottom layer code contains multiple threshold values, the character string in one definition can be directly modified when the threshold values need to be modified.
Step S12: and taking bits contained in the threshold as bitmaps of the disks, and sequentially executing the hooking operation on the corresponding disks in the current threshold by moving a threshold pointer in the threshold.
In this embodiment, bits included in the threshold are used as a bitmap of a disk, and a hooking operation is sequentially performed on a corresponding disk in the current threshold by moving a threshold pointer in the threshold, where the size of the threshold pointer is the same as the threshold, and may specifically be generated based on unsigned data of the reserved target byte size. Specifically, before the bit included in the threshold is used as a bitmap of the disk and the corresponding disk in the current threshold is sequentially hung down by using the threshold pointer, the method may further include: applying for second unsigned data with target byte size from the memory, and taking the second unsigned data as a threshold pointer. If one unsigned four-byte data is spread into 32 Bit bits, the threshold for managing 32 disks is formed by using 32 Bit bits, and the other unsigned four-byte data is a threshold pointer.
In this embodiment, the taking the second unsigned data as the threshold pointer may include: 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. That is, the disk management hardware module uses the second unsigned data as a threshold pointer, thereby tracking all underhung disks in the RAID card through the two unsigned data. I.e., a disk management hardware module is newly added to the RAID card, which maintains the unsigned data of the two target byte sizes used,
Taking 32 Bit as an example, the 32 Bit is a bitmap of 32 disks that need to perform the hooking task within the management threshold, and the threshold pointer dorpointer points to the disk that needs to perform the hooking task. The PK_Bit_DOOR is used as the macro-defined threshold size, and defaults to 32 because a threshold of 32 Bit is adopted at the moment; of course, unsigned octet data may be used, which is a threshold of 64 Bit bits after the unsigned octet data is expanded, and the corresponding pk_bit_door macro defines a threshold size of 64. The 32 Bit thresholds are as follows:
in this embodiment, after the sequentially executing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold, the method may further include: the content of the bit corresponding to the down-hanging disk is modified. I.e. after each disk is hung down, the content of the disk corresponding to the bit in the threshold is modified, for example, 0 is used for representing that 1 is not hung down, or 1 is used for representing that 0 is not hung down.
In this embodiment, the sequentially performing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold may include: 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. Before performing disk hooking, judging whether the corresponding disk has performed hooking operation according to the symbol in the bit pointed by the current threshold pointer, and then performing corresponding operation according to the judging result.
In this embodiment, after the determining whether the disk pointed by the threshold pointer is hung down, the method may further include: 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. In this embodiment, after the determining whether the disk pointed by the threshold pointer is hung down, the method may further include: and if the disk pointed by the threshold pointer is hung down, moving the threshold pointer to point to the next bit. If the disk pointed by the current threshold pointer does not execute the hooking, the disk is hooked, and if the disk pointed by the current threshold pointer does not execute the hooking, the moving threshold pointer points to the next bit so as to hook the next disk.
In this embodiment, in the process of sequentially executing the hooking operation on the corresponding disk in the current threshold by moving the threshold pointer in the threshold, the method may further include: 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. In this embodiment, moving the threshold after all the disks corresponding to the current threshold are hung down may include: and if all the disks corresponding to the current threshold are hung down, moving the threshold to clear the bit corresponding to the threshold. In this embodiment, after determining whether all the disks corresponding to the current threshold are hung down, the method may further include: 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.
In this embodiment, a part of the disk is selected through the threshold each time, so that whether the corresponding disk is completely hung in the current threshold needs to be judged, if yes, the threshold is cleared to execute the next part of disk hanging. And judging whether the threshold pointer traverses all bits of the current threshold or not by checking the size relation between the offset of the threshold pointer in the threshold and the bit number occupied by the threshold. That is, the RAID card once hangs all disks in the pk_bit_door macro definition threshold, moves the threshold after all disks in the threshold are hung, and then executes the task of hanging all disks in the moved threshold, so as to cycle until the RAID card finishes hanging all disks that the user designates to be hung.
Step S13: 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.
The operation of hanging down all the disks in the disk array card is realized by moving the threshold and traversing all the disks by the moving threshold finger after each threshold movement.
In this embodiment, after all the disks corresponding to the current threshold are hung, the threshold is moved, and the operations of hanging the disks corresponding to the moved threshold are sequentially performed by using the threshold fingers until all the disks in the disk array card are hung, including the following steps:
s131: determining the number of times of movement of the threshold and the offset of the threshold pointer;
s132: 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.
In this embodiment, before determining whether all the disks in the disk array card are hung down according to the number of bits occupied by the threshold, the number of moving times, the offset, and the total number of disks in the disk array card, the method may further include: 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. The ratio of the total capacity required for a particular disk array card to the individual disk capacity is taken as the total number of disks within the disk array card.
In this embodiment, the determining whether all the disks in the disk array card are hung down according to the number of bits occupied by the threshold, the number of moving times, the offset, and the total number of disks in the disk array card may include: 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. And when 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.
From the above, in this embodiment, a threshold domain is obtained, and a threshold for a disk array card is defined 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. Therefore, the threshold and the threshold pointer are utilized to manage the down-hanging operation of all the disks in the disk array card through the 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 tasks of the disk array card is accelerated.
The embodiment of the application discloses a specific disk management method, which is shown in fig. 3, and may include the following steps:
step S21: and acquiring a threshold domain, and defining a threshold for the disk array card according to the size of the threshold domain.
Step S22: and taking the bit contained in the threshold as a bit map of the disk, and determining the logical device number of the initial down-hung disk in the disk array card.
The logical device number of the disk to be hung is first determined, i.e. the first disk to be hung is needed by the RAID card.
In this embodiment, the determining the logical device number of the initial down-mounted disk in the disk array card may include: 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. That is, if the user does not specify from which disk the user can start to mount from a disk whose logical device number is zero, if the user sets the logical device number from which the disk is to be mounted, the user can consider that the previous disk has been mounted, and thus the user can mount from the disk.
Step S23: 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.
I.e., the initial mount down disk corresponds to the first bit in the first disk, from where the mount down is performed.
Step S24: 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.
The specific process of the steps S21 and S24 may refer to the corresponding content disclosed in the foregoing embodiment, and will not be described herein.
From the above, in this embodiment, the bit included in the threshold is used as the bitmap of the disk, and the logical device number of the disk that is initially hung down in the disk array card is determined; 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, so that the starting position of hooking is defined through the logic device number.
For example, fig. 4 shows a specific disk management method, which mainly includes the following steps:
the first step: two unsigned four-byte data are applied from the memory, and ldn (logical device number for representing the disk) of the first disk which is required to be hung by the RAID card is stored in the memory.
And a second step of: a first threshold is set from the first disk that the RAID card needs to be down, e.g., the first threshold defining performing the disk down task defines a threshold for the pk_bit_door macro. Pk_bit_door is defined as 32.
And a third step of: and ldn numbers of the first disk of the down-hanging task are input into the RAID card, and the number of the disks needed to be down-hanging by the RAID card is solved according to the capacity of the RAID card.
Fourth step: setting a DoorPointer threshold pointer to point to a first Bit in a threshold, judging whether the Bit pointed by the DoorPointer threshold pointer is 1, skipping the Bit if the Bit pointed by the DoorPointer threshold pointer is 1, then moving the threshold pointer to the next Bit, and executing the task of hanging down the disk marked by the Bit if the threshold pointer pointed by the DoorPointer threshold pointer is 0, and moving to the next Bit after the execution is finished.
Fifth step: every time the dorpointer threshold pointer moves by one Bit, the threshold offset is determined, that is, whether the threshold offset is equal to the pk_bit_door value, and if so, a 32-Bit movement is performed on the threshold, and the dorpointer threshold pointer is moved to the threshold header (the threshold header refers to the first Bit in the threshold). The fourth and fifth steps are further explained as: 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, therefore, all disks in the first threshold need to execute the down-hanging task, when the 32 bits in the first threshold become 0, that is, after the 32 disks all execute the down-hanging task, the first unsigned four-byte data is assigned to zero by moving the threshold by one 32 bits, and then the DoorPointer threshold pointer points to the first Bit in the threshold to execute the content in the fifth step.
Sixth step: and judging whether the task of hanging the disk under the RAID card is finished or not according to the number of the disks and the threshold movement times obtained in the third step and the deviation of the DoorPointer threshold pointer.
In summary, the algorithm is implemented by adopting a programming language, the design combines the threshold and the bitmap, the occupied memory resource condition is two unsigned four-byte data by utilizing the rapid and efficient characteristics of the threshold and the threshold pointer, the memory resource occupancy rate is greatly reduced, meanwhile, the efficiency of executing the task of hanging down a disk by the RAID card can be improved under the condition that hardware is not increased, and the core competitiveness of a company in the RAID card market is improved; the method has the advantages that the hardware is not increased, the data security can be ensured, the efficiency of executing the task of hanging down the disk by the RAID card is improved, the time length of hanging down the disk when the RAID card is started is reduced, the experience of using the RAID card by a user is improved, and meanwhile, the risk of error of hanging down the disk under the management of the RAID card under the condition of the foreground emergency I/O task is reduced.
Correspondingly, the embodiment of the application also discloses a disk management device, referring to fig. 5, the device comprises:
the threshold determining module 11 is configured to obtain a threshold domain, and define a threshold for the disk array card according to the size of the threshold domain;
A hooking module 12, configured to take bits included in the threshold as a bitmap of the disk, and sequentially perform hooking operation on the corresponding disk in the current threshold by moving a threshold pointer in the threshold;
and the threshold moving module 13 is used for moving the threshold after all the disks corresponding to the current threshold are hung, and sequentially executing the 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.
From the above, in this embodiment, a threshold domain is obtained, and a threshold for a disk array card is defined 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. Therefore, the threshold and the threshold pointer are utilized to manage the down-hanging operation of all the disks in the disk array card through the 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 tasks of the disk array card is accelerated.
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 an offset of the threshold pointer;
and the hang-down completion judging unit is used for 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.
In some embodiments, the disk management apparatus may specifically include:
and the disk total number determining unit is used for determining the total number of the disks in the disk array card according to the capacity of the disk array card.
In some specific embodiments, the hang completion determining unit may specifically include:
the number of the down-hung magnetic disks determining unit is used for determining the number of the magnetic disks which have executed the down-hung operation in the magnetic disk array card according to the number of bits occupied by the threshold, the moving times and the offset;
and the down-hanging completion judging unit is used for judging that all the disks in the disk array card are down-hanging completed if the number of the disks which have executed down-hanging operation in the disk array card is equal to the total number of the disks in the disk array card.
In some embodiments, the hooking module 12 may specifically include:
the disk hanging judging unit is used for judging whether the disk pointed by the threshold pointer is hung or not according to the symbol in the bit pointed by the threshold pointer at present; the bits in the threshold are used to characterize whether the corresponding disk is down-hung.
In some embodiments, the hooking module 12 may specifically include:
and the hooking unit is used for executing hooking operation on the disk pointed by the current threshold pointer after judging whether the disk pointed by the current threshold pointer is hooked or not.
In some embodiments, the hooking module 12 may specifically include:
and the pointer moving unit is used for moving the threshold pointer to point to the next bit after judging whether the disk pointed by the threshold pointer is hung down or not.
In some embodiments, the hooking module 12 may specifically include:
and the in-threshold disk hang completion judging unit is used for judging whether all disks corresponding to the current threshold are hung completely or not according to the magnitude relation between the offset of the threshold pointer in the threshold and the bit number occupied by the threshold.
In some specific embodiments, the threshold moving module 13 may specifically include:
and the mobile unit is used for moving the threshold to clear the bit corresponding to the threshold if all the corresponding magnetic disks in the current threshold are hung down.
In some embodiments, the hooking module 12 may specifically include:
and the hooking unit is used for continuously executing the step of sequentially executing hooking operation on the corresponding disks in the current threshold by moving the threshold pointer in the threshold after judging whether all the corresponding disks in the current threshold are hooked or not.
In some specific embodiments, the threshold determining module 11 may specifically include:
a first unsigned data acquisition unit for applying for first unsigned data of a target byte size from the memory;
and the threshold domain determining unit is used for expanding the first unsigned data to obtain corresponding target number bits and obtaining a threshold domain based on the target number bits.
In some embodiments, the threshold domain determining unit is further configured to execute the operation of expanding the first unsigned data to obtain a corresponding target number of bits through a disk management hardware module of a firmware layer in the disk array card, and obtaining a threshold domain based on the target number of bits.
In some specific embodiments, the threshold determining module 11 may specifically include:
and the second unsigned data acquisition unit is used for applying for second unsigned data with the target byte size from the memory and taking the second unsigned data as a threshold pointer.
In some embodiments, the second unsigned data obtaining unit is further configured to perform the operation of using the second unsigned data as a threshold pointer through a disk management hardware module of a firmware layer in the disk array card.
In some specific embodiments, the threshold determining module 11 may specifically include:
the threshold definition unit is used for defining a threshold for the disk array card in a macro definition mode according to the size of the threshold domain;
in some embodiments, the disk management apparatus further includes:
and the threshold modifying unit is used for modifying the threshold by modifying the character string in the macro definition.
In some embodiments, the hooking module 12 may specifically include:
the logic device number determining unit is used for determining the logic device number of the initial down-hung disk in the disk array card;
and the pointer position adjusting unit is used for 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.
In some specific embodiments, the logic device number determining unit may specifically include:
the first logic device number determining unit is used for taking the target logic device number as the logic device number of the initial down-hung disk in the disk array card if the target logic device number sent by the user is obtained;
and the second logic device number determining unit is used for taking the first logic device number as the logic device number of the initial down-hung disk in the disk array card if the target logic device number sent by the user is not acquired.
Further, the embodiment of the application further discloses an electronic device, and referring to fig. 6, the content in the drawing should not be considered as any limitation on the scope of use of the application.
Fig. 6 is a schematic structural diagram of an electronic device 20 according to 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. The memory 22 is configured to store a computer program, which 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 configured to provide an operating 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 an external device, and the communication protocol to be followed is any communication protocol applicable to the technical solution of the present application, which is not specifically limited herein; the input/output interface 25 is used for acquiring external input data or outputting external output data, and the specific interface type thereof may be selected according to the specific application requirement, which is not limited herein.
The memory 22 may be a carrier for storing resources, such as a read-only memory, a random access memory, a magnetic disk, or an optical disk, and the resources stored thereon include an operating system 221, a computer program 222, and data 223 including a threshold, and the storage may be temporary storage or permanent storage.
The operating system 221 is used for managing and controlling various hardware devices on the electronic device 20 and the computer program 222, so as to implement the operation and processing of the processor 21 on the mass data 223 in the memory 22, which may be WindowsServer, netware, unix, linux. The computer program 222 may further include a computer program that can be used to perform other specific tasks in addition to the computer program that can be used to perform the disk management method performed by the electronic device 20 as disclosed in any of the previous embodiments.
Further, the embodiment of the application also discloses a computer storage medium, in which computer executable instructions are stored, and when the computer executable instructions are loaded and executed by a processor, the steps of the disk management method disclosed in any of the foregoing embodiments are implemented.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description of the magnetic disk management method, device, equipment and medium provided by the present invention applies specific examples to illustrate the principles and embodiments of the present invention, and the above examples are only used to help understand the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
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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