CN115951845A - Disk management method, device, equipment and storage medium - Google Patents
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Abstract
The application discloses a disk management method, a disk management device, disk management 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 aiming at the disk array card according to the size of the threshold domain; taking the bit contained in the threshold as a bitmap of a disk, and sequentially executing the hanging-down operation on the corresponding disk in the current threshold by moving the threshold in the threshold; and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down. The threshold and the threshold pointer are used for managing the hanging-down operation of all the disks in the disk array card through a threshold moving algorithm, only the resources of the size of the threshold domain and the size of the threshold pointer are needed to be occupied, the occupancy rate of memory resources is effectively reduced, and the speed of the disk array card for executing the hanging-down disk task is increased.
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 the industrial internet, more and more data need to be stored in a data center safely and reliably, so that the storage technology is particularly important in the current industrial internet era. With the increasing amount of data to be stored, data running on a single storage server is increasing, and when the capacity and security of the single storage server are not enough to support system services, a plurality of storage servers need to be combined in a certain specific manner to be used as a storage system externally, so that the actual needs can be met. The smallest management unit of a storage system is a RAID array (i.e., a disk array, which is a large-capacity disk group composed of a plurality of independent disks, and enhances the performance of the entire disk system by using an additive effect of providing data by individual disks, and by using this technology, data is cut into a plurality of segments and stored on each disk, respectively), and each storage server in the storage system manages the disks by using the RAID array, so 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, mirroring, and parity to ensure data reliability, and concurrently process I/O (Input/Output) by using a plurality of disk drives in the array to enhance the I/O performance of the RAID array.
In the past, a soft RAID storage technology is used in a storage server, some algorithms, data management and some functions in storage are managed and realized by software, the whole process is not participated by hardware, and the storage performance of the storage server in the past is low because complex functions such as RAID array geometric space management and the like are not shared by the hardware. In recent years, with the rapid development of semiconductor chips, hard RAID storage technologies (RAID cards, disk array cards) have come up, where a RAID card is a hard RAID storage technology proposed on the basis of a soft RAID storage technology in order to improve the I/O performance and data security of a storage center, and as the name suggests, the hard RAID storage technology is to put 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 of a storage system. In terms of physical connection, a RAID card is a functional board card that organizes disks connected to a storage server into a plurality of RAID arrays according to RAID levels, and a technician inserts one or more RAID cards into the storage server through PCIe slots reserved in the storage server for use by a user.
The storage capacity of a large storage center is huge, and the capacity of a single disk is very limited, so that hundreds of thousands of disks need to be hung on a RAID card deployed on a large storage server at present. The process of hanging hundreds of thousands of disks under the management of the RAID card consumes a lot of time, resulting in a reduction in user experience, and there is a risk of a disk hanging error under the management of the RAID card under the foreground emergency I/O task. Currently, the technology in the industry uses a Bit organization method for managing the disk under the RAID card, which is a one-dimensional linear table composed of bits (bits), where each Bit represents a disk. The Bit organization mode is insufficient in a large-capacity RAID array, occupies a large amount of memory resources, causes that each RAID card in a large-scale storage center needs a long time to hang a disk under management, and consumes more time when a user adds the RAID cards. When a user needs a storage space of 1PB capacity managed by the RAID card, if one disk has 16G capacity, the RAID card needs to manage 1PB/16G disks, namely 65536 disks, according to one disk, 65536 bits are needed and converted into (65536/8) 8192 bytes, and accordingly 8192 bytes of memory space are needed to store the Bit bits, and the 8192 bytes occupy a large amount of memory resource space, so that the process of managing the suspended disk by the RAID card is slowed down, the service executed by the user on the RAID card is affected, and the experience of the user using the RAID card is reduced. That is, the Bit organization method consumes a large amount of memory resources, which not only increases the time consumption for managing the off-hook disk when the RAID card is started, but also reduces the experience of the user using the RAID card, and there is a risk of an error of the off-hook disk under the RAID card management under the condition of the previous emergency I/O task.
Disclosure of Invention
In view of this, the present invention provides a disk management method, apparatus, device and medium, which can effectively reduce the memory resource occupancy rate and accelerate the speed of the disk array card to execute the task of hanging down a disk. 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 aiming at the disk array card according to the size of the threshold domain;
taking the bit contained in the threshold as a bitmap of a disk, and sequentially executing the hanging-down operation on the corresponding disk in the current threshold by moving the threshold in the threshold;
and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down.
Optionally, after all the disks corresponding to the current threshold are hung down, moving the threshold, and using the threshold finger to sequentially hang down the corresponding disks in the moved threshold until all the disks in the disk array card are hung down, the method includes:
determining the number of movements 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 the 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 completely suspended 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, the method further includes:
and determining the total number of the disks in the disk array card according to the capacity of the disk array card.
Optionally, the determining, 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 the disks in the disk array card are completely suspended includes:
determining the number of disks which have executed the hang-down operation in the disk array card according to the number of bits occupied by the threshold, the moving times and the offset;
and if the number of the disks which are subjected to the hang-down operation in the disk array card is equal to the total number of the disks in the disk array card, judging that the hang-down of all the disks in the disk array card is finished.
Optionally, the moving the threshold within the threshold refers to sequentially performing a suspension operation on corresponding disks within the current threshold, including:
judging whether the magnetic disk pointed by the current threshold pointer is hung down completely according to the symbol in the bit pointed by the current threshold pointer; and bits in the threshold are used for representing whether the corresponding disk is hung down.
Optionally, after determining whether the disk pointed by the current threshold pointer is hung down, the method further includes:
and if the magnetic disk pointed by the current threshold pointer is not hung down, executing hanging down operation on the magnetic disk pointed by the current threshold pointer.
Optionally, after determining whether the disk pointed by the current threshold pointer is suspended completely, the method further includes:
and if the magnetic disk pointed by the threshold pointer is hung down completely, moving the threshold pointer to point to the next bit.
Optionally, the moving the threshold within the threshold refers to a process of sequentially performing a suspend operation on corresponding disks within the current threshold, and further includes:
and judging whether all the corresponding disks in the current threshold are hung down according to the magnitude 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 includes:
and if all the corresponding disks in 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 completely suspended, the method further includes:
if all the disks corresponding to the current threshold have disks which are not hung, the step of sequentially executing the hanging-down operation on the disks corresponding to the current threshold by moving the threshold in the threshold is continuously executed.
Optionally, the obtaining the threshold domain includes:
applying for first unsigned data of a target byte size from a memory;
and expanding the first unsigned data to obtain corresponding target number of bits, and obtaining a threshold domain based on the target number of 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 unfolding the first unsigned data to obtain a corresponding target number of bits and obtaining a threshold domain based on the target number of bits by 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 a disk and the corresponding disk in the current threshold is subjected to the suspension operation in sequence by using the threshold index, the method further includes:
and applying for second unsigned data with a target byte size from the memory, and using the second unsigned data as a threshold pointer.
Optionally, the using the second unsigned data as a threshold pointer includes:
and executing 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.
Optionally, the defining a threshold for the disk array card according to the size of the threshold domain includes:
defining a threshold aiming at the disk array card in a macro definition mode according to the size of the threshold domain;
correspondingly, the disk management method further includes:
the threshold is modified by modifying a string in the macro definition.
Optionally, the moving the threshold within the threshold refers to sequentially performing a suspension operation on corresponding disks within the current threshold, including:
determining the number of the logic equipment for starting to hang the disk in the disk array card;
and adjusting the threshold pointer to the first bit in the threshold, and executing the hang-down operation from the initial hang-down disk according to the logic device number.
Optionally, the determining a logical device number of the initial suspended disk in the disk array card includes:
if a target logic device number sent by a user is obtained, the target logic device number is used as a logic device number of an initial suspended disk in the disk array card;
and if the target logical device number sent by the user is not acquired, taking the first logical device number as the logical device number of the initial suspended 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 aiming at the disk array card according to the size of the threshold domain;
the hang-down module is used for taking the bit contained in the threshold as a bitmap of a disk, and the move of the threshold in the threshold refers to that the hang-down operation is sequentially executed aiming at the corresponding disk in the current threshold;
and the threshold moving module is used for moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down.
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 a processor implements the aforementioned disk management method.
In the application, a threshold domain is obtained, and a threshold for a disk array card is defined according to the size of the threshold domain; taking the bit contained in the threshold as a bitmap of a disk, and sequentially executing the hanging-down operation on the corresponding disk in the current threshold by moving the threshold in the threshold; and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down. Therefore, the threshold and the threshold pointer are used for managing the hanging-down operation of all the disks in the disk array card through the threshold moving algorithm, only the resources of the threshold domain and the threshold pointer are occupied, the occupancy rate of the memory resources is effectively reduced, and the speed of executing the hanging-down disk task by the disk array card is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a disk management method provided in the present application;
fig. 2 is a diagram of a RAID card structure in a specific storage system provided in the present application;
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 structural 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
In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the prior art, a Bit organization mode is adopted for managing the disk under the RAID card, and the Bit organization mode is insufficient in a large-capacity RAID array, and the Bit organization mode occupies a large amount of memory resources, which may cause that each RAID card in a large storage center needs a long time to manage the disk under the RAID card, and when a user adds a RAID card, more time may be consumed. In order to overcome the technical problem, 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 disks by a disk array card.
The embodiment of the application discloses a disk management method, and as shown in fig. 1, the method can include the following steps:
step S11: and acquiring a threshold domain, and defining a threshold aiming at the disk array card according to the size of the threshold domain.
In this embodiment, a threshold domain is first obtained, and then a threshold for the disk array card is defined according to the size of the threshold domain, where the threshold domain may be specifically generated for unsigned data based on the reserved target byte size. Specifically, the obtaining the threshold domain may include: applying for first unsigned data of a target byte size from a memory; and unfolding the first unsigned data to obtain corresponding target number of bits, and obtaining a threshold domain based on the target number of bits. For example, the first unsigned four byte data is spread into 32 bits, and the 32 bits are used to form a threshold that can manage 32 disks at a time.
In this embodiment, 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 may include: and executing the operation of 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 by a disk management hardware module of a firmware layer in the disk array card.
It is understood that fig. 2 is a block diagram of a RAID card in a storage system, a disk management hardware module indicated at 110, a firmware layer in the RAID card includes a driver, a RAID card kernel, a file system, a management monitoring system, a disk management hardware module, and so on, the RAID card kernel and the file system can provide functions of accessing files and logical unit numbers and manage these functions, and 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, constitutes a RAID array number 1, disk group 2 constitutes a RAID array number 2, and so on, disk group N constitutes a RAID array number N. RAID array No. 1, RAID array No. 2. The RAID card controller indicated by 140 is responsible for software processing functions in the RAID card, the RAID card controller realizes software functions specially, the hardware module executes some algorithms, data management, and other functions, so that separation between hardware and software is realized, hardware and software work independently and in parallel, and the performance of the RAID card management lower hanging disk is improved by the design of the hardware-software separation system architecture. In this embodiment, the user at the client inputs all the disks that need to be hung down by the RAID card, and returns the data to the user until the RAID card finishes hanging down all the disks. For example, the disk management hardware module expands the first unsigned four byte data into 32 bits, uses the 32 bits to form a threshold for managing 32 disks, and uses the second unsigned four byte data as a threshold pointer.
The design idea of software and hardware separation is adopted, hardware and software work independently and parallelly, a disk management hardware module is added in the hardware, the RAID card controller is responsible for software functions, and data safety and I/O performance of the RAID card in the process of executing a disk hanging task are improved through the design of a software and hardware separation system architecture.
In this embodiment, the defining a threshold for the disk array card according to the size of the threshold domain may include: defining a threshold aiming at 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 a string in the macro definition. The macro definition is also called macro substitution and macro substitution, called macro for short, and is in a format of a # define identifier character string, wherein the identifier is a so-called symbol constant and is also called a macro name, unified modification is facilitated after the macro definition is used, and for example, if a plurality of threshold values are contained in bottom layer coding, the character string in one definition can be directly modified when the threshold needs to be modified.
Step S12: and taking the bit contained in the threshold as a bitmap of a disk, and sequentially executing the hang-down operation on the corresponding disk in the current threshold by moving the threshold in the threshold.
In this embodiment, the bits included in the threshold are used as a bitmap of a disk, and the threshold pointer is moved within the threshold to sequentially execute a suspension operation on the corresponding disk within the current threshold, where the size of the threshold pointer is the same as the threshold, and specifically, the threshold pointer may also be generated based on unsigned data of the reserved target byte size. Specifically, before the bits included in the threshold are used as a bitmap of a disk and the corresponding disk in the current threshold is subjected to the suspension operation in sequence by using the threshold index, the method may further include: and applying for second unsigned data with a target byte size from the memory, and using the second unsigned data as a threshold pointer. If one unsigned four-byte data is spread into 32 bits, 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, the using the second unsigned data as the threshold pointer may include: and executing 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. That is, the disk management hardware module uses the second unsigned data as a threshold pointer, thereby tracking all pending disks in the RAID card through the two unsigned data. Namely, a disk management hardware module is newly added in the RAID card, the module maintains unsigned data of two used target byte sizes,
taking 32 bits as an example, the 32 bits are bitmaps of 32 disks which need to execute the suspension task within the management threshold, and the threshold pointer DoorPointer is a disk which needs to execute the suspension task. The threshold size defined by the macro, PK _ Bit _ DOOR, defaults to 32, since a 32 Bit threshold is used at this time; of course, unsigned octet data may be used, such that after the unsigned octet data is spread out, a threshold of 64 bits is used, and the corresponding PK _ Bit _ DOOR macro defines a threshold size of 64. Shown below are 32 Bit thresholds:
in this embodiment, the moving the threshold within the threshold refers to sequentially performing a suspension operation on the corresponding disks within the current threshold, and may further include: and modifying the content of the corresponding bit of the lower hanging disk. After each disk is hung, modifying the content of the corresponding bit of the disk in the threshold, for example, using 0 to represent that the disk is not hung and 1 to represent that the disk is hung, or using 1 to represent that the disk is not hung and 0 to represent that the disk is hung.
In this embodiment, the moving the threshold within the threshold refers to sequentially performing a suspension operation on corresponding disks within the current threshold, and may include: judging whether the magnetic disk pointed by the current threshold pointer is hung down completely or not according to the symbol in the bit pointed by the current threshold pointer; and bits in the threshold are used for representing whether the corresponding disk is hung down. Before the magnetic disk is hung down, judging whether the corresponding magnetic disk has executed the hanging down operation according to the symbol in the bit pointed by the current threshold pointer, and executing the corresponding operation according to the judgment result.
In this embodiment, after determining whether the disk pointed by the current threshold pointer is hung down, the method may further include: and if the magnetic disk pointed by the current threshold pointer is not hung down, executing hanging down operation on the magnetic disk pointed by the current threshold pointer. In this embodiment, after determining whether the disk pointed by the current threshold pointer is suspended completely, the method may further include: and if the magnetic disk pointed by the threshold pointer is hung down completely, moving the threshold pointer to point to the next bit. That is, if the disk pointed by the current threshold pointer is not hung, the disk is hung, and if the disk is hung, the threshold pointer is moved to the next bit, so as to hang the next disk.
In this embodiment, the moving the threshold within the threshold refers to a process of sequentially performing a suspend operation on corresponding disks within the current threshold, and may further include: and judging whether all the corresponding disks in the current threshold are hung down according to the magnitude relation between the offset of the threshold pointer in the threshold and the bit number occupied by the threshold. In this embodiment, the moving the threshold after all the disks corresponding to the current threshold are hung down may include: and if all the corresponding disks in 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 suspended completely, the method may further include: if all the disks corresponding to the current threshold have disks which are not hung, the step of sequentially executing the hanging-down operation on the disks corresponding to the current threshold by moving the threshold in the threshold is continuously executed.
In this embodiment, the disks are sequentially downloaded by framing a part of the disks each time through the threshold, so that it is necessary to determine whether all the corresponding disks within the current threshold are downloaded, and if so, the threshold is cleared to execute the downloading of the next part of disks. Specifically, the magnitude relation between the offset of the threshold pointer in the threshold and the number of bits occupied by the threshold is checked to judge whether the threshold pointer traverses all the bits of the current threshold. That is to say, the PK _ Bit _ DOOR macro is used for suspending all the disks in the threshold by the RAID card once, after suspending all the disks in the threshold is completed, the threshold is moved, then the task of suspending is executed on all the disks in the threshold after moving, and this loop is performed until the completion of suspending all the disks specified by the user by the RAID card.
Step S13: and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down.
Namely, all disks are traversed by moving the threshold and moving the threshold pointer pair after threshold movement every time, and the hanging-down 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 suspended completely, the threshold is moved, and the threshold finger is used to sequentially suspend the disks corresponding to the threshold after the threshold is moved until all the disks in the disk array card are suspended completely, which includes the following steps:
s131: determining the moving times 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 completely or not according to the number of the 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 suspended 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, the method may further include: and determining the total number of the disks in the disk array card according to the capacity of the disk array card. The ratio of the total capacity required by a 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, the determining whether all the disks in the disk array card are completely suspended 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 may include: determining the number of the disks which are subjected to the hanging-down operation in the disk array card according to the number of the bits occupied by the threshold, the moving times and the offset; and if the number of the disks which are subjected to the hang-down operation in the disk array card is equal to the total number of the disks in the disk array card, judging that the hang-down of all the disks in the disk array card is finished. The number of the disks which have executed the hang-down operation in the disk array card is obtained by combining the offset of the threshold pointer in the current threshold according to the product of the number of the bits occupied by the threshold and the number of the threshold moving times, and when the number of the disks which have executed the hang-down operation in the disk array card is equal to the total number of the disks in the disk array card, the hang-down completion of all the disks in the disk array card can be judged.
As can be seen 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 the bit contained in the threshold as a bitmap of a disk, and sequentially executing the hanging-down operation on the corresponding disk in the current threshold by moving the threshold in the threshold; and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down. Therefore, the threshold and the threshold pointer are used for managing the hanging-down operation of all the disks in the disk array card through the threshold moving algorithm, only the resources of the threshold domain and the threshold pointer are occupied, the occupancy rate of the memory resources is effectively reduced, and the speed of executing the hanging-down disk task by the disk array card is increased.
The embodiment of the present application discloses a specific disk management method, and as shown in fig. 3, the method may include the following steps:
step S21: and acquiring a threshold domain, and defining a threshold aiming at the disk array card according to the size of the threshold domain.
Step S22: and determining the number of the logic device which starts to hang the disk in the disk array card by taking the bit contained in the threshold as a bitmap of the disk.
That is, the logical device number of the initial suspended disk, i.e. the first disk that needs to be suspended by the RAID card, is first specified.
In this embodiment, the determining the number of the logical device that starts to suspend the disk in the disk array card may include: if a target logic device number sent by a user is obtained, the target logic device number is used as a logic device number of an initial suspended disk in the disk array card; and if the target logical device number sent by the user is not acquired, taking the first logical device number as the logical device number of the initial suspended disk in the disk array card. That is, if the user does not specify from which disk the logical device number is zero, the user can suspend the disk from the disk whose logical device number is zero, and if the user sets the logical device number from which the disk is to be suspended, the user can assume that the previous disk has been suspended, and therefore, the user may suspend the disk from the disk.
Step S23: and adjusting the threshold pointer to the first bit in the threshold, and executing the hang-down operation from the initial hang-down disk according to the logic device number.
That is, the initial hang-down disk corresponds to the first bit in the first disk, from which the hang-down is performed.
Step S24: and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down.
For the specific processes of the steps S21 and S24, reference may be made to the corresponding contents disclosed in the foregoing embodiments, and details are not repeated here.
As can be seen from the above, in this embodiment, the bits included in the threshold are used as the bitmap of the disk, and the logical device number of the initial suspended disk in the disk array card is determined; and adjusting the threshold pointer to the first bit in the threshold, and executing the hang-down operation from the initial hang-down disk according to the logic device number, so as to determine the start position of hang-down through the logic device number.
For example, fig. 4 shows a specific disk management method, which mainly includes the following steps:
the first step is as follows: two unsigned four-byte data are requested from the memory, and the ldn number (used for characterizing the logical device number of the disk) of the first disk which needs to be hung down by the RAID card is stored in the memory.
The second step: a first threshold is set from the first disk that needs to be suspended by the RAID card, for example, the first threshold for performing disk suspension tasks is defined as PK _ Bit _ DOOR macro. PK _ Bit _ DOOR is defined as 32.
The third step: and inputting the ldn number of the RAID card executing the first task disk to be hung down, and solving the quantity of the disks needing to be hung down by the RAID card according to the capacity of the RAID card.
The fourth step: setting a Doorpointer threshold pointer to point to the first Bit in the 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, executing the task of hanging down the disk marked by the Bit if the Bit pointed by the Doorpointer threshold pointer is 0, and moving to the next Bit after the execution is finished.
The fifth step: each time the doorpoint threshold pointer moves by one Bit, the threshold offset needs to be judged, namely whether the threshold offset is equal to the PK _ Bit _ DOOR value or not is judged, if the threshold offset is equal to the PK _ Bit _ DOOR value, 32-Bit movement is carried out on the threshold, and meanwhile, the doorpoint threshold pointer is moved to the head of the threshold (the head of the threshold refers to the first Bit in the threshold). The fourth step and the fifth step are explained as follows: the disk management hardware module initializes the first unsigned four byte data to 0, so that each Bit is 0 after the data is expanded into 32 bits, all disks in the first threshold need to execute a suspension task, when 32 bits in the first threshold become 0, namely 32 disks all execute the suspension task, the threshold is moved for 32 bits, namely the first unsigned four byte data is assigned to zero, and then a Doorpointer threshold pointer points to the first Bit in the threshold to start executing the contents in the fifth step.
And a sixth step: and judging whether the task of hanging the disks under the RAID card is finished according to the number of the disks, the threshold moving times and the offset of the Doorpointer threshold pointer obtained in the third step.
In conclusion, the algorithm is realized by adopting a programming language, the threshold and the bitmap are combined, and the quick and efficient characteristics of the threshold and the threshold pointer are utilized, so that the occupied memory resource condition is two unsigned four-byte data, the memory resource occupancy rate is greatly reduced, meanwhile, the efficiency of the RAID card for executing the disk hanging task can be improved under the condition of not increasing hardware, and the core competitiveness of a company in the RAID card market is increased; the method has the advantages that the hardware is not increased, the data safety can be guaranteed, the efficiency of the RAID card executing the task of hanging the disk down is improved, the time length of hanging the disk down when the RAID card is started is reduced, the experience of a user using the RAID card is improved, and meanwhile, the risk of disk hanging errors under the RAID card management is reduced under the condition of foreground emergency I/O tasks.
Correspondingly, an embodiment of the present application further discloses a disk management apparatus, as shown in fig. 5, the apparatus includes:
a threshold determining module 11, configured to obtain a threshold domain, and define a threshold for the disk array card according to the size of the threshold domain;
a hang-down module 12, configured to use bits included in the threshold as a bitmap of a disk, and sequentially execute a hang-down operation on a corresponding disk in a current threshold by moving the threshold in the threshold;
and a threshold moving module 13, configured to move the threshold after all the disks corresponding to the current threshold are hung down, and sequentially execute a hanging-down operation on the disks corresponding to the moved threshold by using a threshold finger until all the disks in the disk array card are hung down.
As can be seen 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 the bit contained in the threshold as a bitmap of a disk, and sequentially executing the hanging-down operation on the corresponding disk in the current threshold by moving the threshold in the threshold; and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down. Therefore, the threshold and the threshold pointer are used for managing the hanging-down operation of all the disks in the disk array card through the threshold moving algorithm, only the resources of the threshold domain and the threshold pointer are occupied, the occupancy rate of the memory resources is effectively reduced, and the speed of executing the hanging-down disk task by the disk array card is increased.
In some embodiments, the threshold moving module 13 may specifically include:
an offset determining unit, configured to determine the number of times the threshold is moved 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 completely according to the number of the bits occupied by the threshold, the moving times, the offset and the total number of the disks in the disk array card.
In some specific embodiments, the disk management apparatus may specifically include:
and the total number of the disks 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-down completion determining unit may specifically include:
a suspended disk number determining unit, configured to determine, according to the number of bits occupied by the threshold, the number of times of movement, and the offset, the number of disks in the disk array card on which a suspension operation has been performed;
and the hang-down completion judging unit is used for judging that all the disks in the disk array card are hung down completely if the number of the disks which are subjected to hang-down operation in the disk array card is equal to the total number of the disks in the disk array card.
In some specific embodiments, the hang-down module 12 may specifically include:
the disk hang-down judging unit is used for judging whether the disk pointed by the current threshold pointer is hung down completely according to the symbol in the bit position pointed by the current threshold pointer; and bits in the threshold are used for representing whether the corresponding disk is hung down.
In some specific embodiments, the hang-down module 12 may specifically include:
and the suspension unit is used for executing suspension operation on the disk pointed by the current threshold pointer if the disk pointed by the current threshold pointer is not suspended completely after judging whether the disk pointed by the current threshold pointer is suspended completely.
In some specific embodiments, the hang-down module 12 may specifically include:
and the pointer moving unit is used for moving the threshold pointer to point to the next bit position if the magnetic disk pointed by the current threshold pointer is hung completely after judging whether the magnetic disk pointed by the current threshold pointer is hung completely.
In some specific embodiments, the hang-down module 12 may specifically include:
and the under-hanging completion judging unit of the magnetic disks in the threshold is used for judging whether all the magnetic disks corresponding to the current threshold are under-hung 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 embodiments, the threshold moving module 13 may specifically include:
and the moving unit is used for moving the threshold to clear the bit corresponding to the threshold if all the corresponding disks in the current threshold are hung down.
In some specific embodiments, the hang-down module 12 may specifically include:
and the hang-down unit is used for continuing to execute the step of sequentially executing hang-down operation on the corresponding disks in the current threshold by moving the threshold in the threshold if the disks which are not hung down exist in all the corresponding disks in the current threshold after judging whether all the disks corresponding to the current threshold are hung down completely.
In some specific embodiments, the threshold determining module 11 may specifically include:
a first unsigned data acquisition unit, configured to apply for a first unsigned data of a target byte size from a memory;
a threshold domain determining unit, configured to spread the first unsigned data to obtain corresponding target number of bits, and obtain a threshold domain based on the target number of bits.
In some specific embodiments, the threshold domain determining unit is further configured to perform, by using a disk management hardware module of a firmware layer in the disk array card, the operation of 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.
In some 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 a target byte size from the memory and using the second unsigned data as a threshold pointer.
In some embodiments, the second unsigned data obtaining unit is further configured to execute, by a disk management hardware module of a firmware layer in the disk array card, the operation of using the second unsigned data as the threshold pointer.
In some specific embodiments, the threshold determining module 11 may specifically include:
the threshold definition unit is used for defining the threshold aiming at the disk array card in a macro definition mode according to the size of the threshold domain;
in some specific embodiments, the disk management apparatus further includes:
a threshold modifying unit, configured to modify the threshold by modifying a string in the macro definition.
In some specific embodiments, the hang-down module 12 may specifically include:
a logical device number determining unit, configured to determine a logical device number of an initial suspended disk in the disk array card;
and the pointer position adjusting unit is used for adjusting the threshold pointer to a first bit position in a threshold and executing the hang-down operation from the initial hang-down disk according to the logic device number.
In some specific embodiments, the logic device number determining unit may specifically include:
a first logic device number determining unit, configured to, if a target logic device number sent by a user is obtained, use the target logic device number as a logic device number of an initial suspended disk in the disk array card;
and the second logical device number determining unit is used for taking the first logical device number as the logical device number of the initial suspended 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, which is shown in fig. 6, and the content in the drawing cannot be considered as any limitation to the application scope.
Fig. 6 is a schematic structural diagram of an electronic device 20 according to an embodiment of the present disclosure. 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 used for storing a computer program, and the computer program is loaded and executed by the processor 21 to implement the 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 a 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 an external device, and a communication protocol followed by the communication interface is any communication protocol applicable to the technical solution of the present application, and is not specifically limited herein; the input/output interface 25 is configured to obtain external input data or output data to the outside, and a specific interface type thereof may be selected according to specific application requirements, which is not specifically limited herein.
In addition, the storage 22 is used as a carrier for storing resources, and may be a read-only memory, a random access memory, a magnetic disk or an optical disk, etc., where the stored resources include an operating system 221, a computer program 222, data 223 including a threshold, etc., and the storage may be a transient storage or a permanent storage.
The operating system 221 is used for managing and controlling each hardware device and the computer program 222 on the electronic device 20, so as to implement the operation and processing of the mass data 223 in the memory 22 by the processor 21, and may be a windows server, a Netware, a Unix, a Linux, or the like. 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 disclosed in any of the foregoing embodiments.
Further, an embodiment of the present application further discloses a computer storage medium, where computer-executable instructions are stored in the computer storage medium, 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 the present specification, the embodiments are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same or similar parts between the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
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. A software module may reside 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 should also be noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above detailed description is provided for a disk management method, apparatus, device and medium provided by the present invention, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (20)
1. A disk management method, comprising:
acquiring a threshold domain, and defining a threshold aiming at the disk array card according to the size of the threshold domain;
taking the bit contained in the threshold as a bitmap of a disk, and sequentially executing the hanging-down operation on the corresponding disk in the current threshold by moving the threshold in the threshold;
and moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down.
2. The method according to claim 1, wherein moving the threshold after all the disks corresponding to the current threshold are hung down, and using a threshold finger to sequentially hang down the disks corresponding to the moved threshold until all the disks in the disk array card are hung down comprises:
determining the moving times 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 the bits occupied by the threshold, the moving times, the offset and the total number of the disks in the disk array card.
3. The method according to claim 2, wherein before determining whether all the disks in the disk array card are suspended completely 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, the method further includes:
and determining the total number of the disks in the disk array card according to the capacity of the disk array card.
4. The method according to claim 2, wherein the determining whether all disks in the disk array card are suspended completely 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 includes:
determining the number of the disks which are subjected to the hanging-down operation in the disk array card according to the number of the bits occupied by the threshold, the moving times and the offset;
and if the number of the disks which are subjected to the hang-down operation in the disk array card is equal to the total number of the disks in the disk array card, judging that the hang-down of all the disks in the disk array card is finished.
5. The method for managing disks according to claim 1, wherein the moving the threshold within the threshold means that a downward hanging operation is sequentially performed on the corresponding disks within the current threshold, and the method includes:
judging whether the magnetic disk pointed by the current threshold pointer is hung down completely or not according to the symbol in the bit pointed by the current threshold pointer; and bits in the threshold are used for representing whether the corresponding disk is hung down.
6. The method according to claim 5, wherein after determining whether the disk currently pointed by the threshold pointer is suspended completely, the method further includes:
and if the magnetic disk pointed by the current threshold pointer is not hung down completely, executing the hanging down operation on the magnetic disk pointed by the current threshold pointer.
7. The method according to claim 5, wherein after determining whether the disk currently pointed by the threshold pointer is suspended completely, the method further includes:
and if the magnetic disk pointed by the threshold pointer is hung down completely, moving the threshold pointer to point to the next bit.
8. The method for managing disks according to claim 1, wherein moving the threshold within the threshold refers to a process of sequentially performing a suspension operation on corresponding disks within a current threshold, further comprising:
and judging whether all the corresponding disks in the current threshold are hung down according to the magnitude relation between the offset of the threshold pointer in the threshold and the bit number occupied by the threshold.
9. The method of claim 8, wherein moving the threshold after all disks corresponding to the current threshold are suspended completely comprises:
and if all the corresponding disks in the current threshold are hung down, moving the threshold to clear the bit corresponding to the threshold.
10. The method according to claim 8, wherein after determining whether all the disks corresponding to the current threshold are suspended completely, the method further comprises:
if all the disks corresponding to the current threshold have disks which are not hung, the step of sequentially executing the hanging-down operation on the disks corresponding to the current threshold by moving the threshold in the threshold is continuously executed.
11. The method of claim 1, wherein the obtaining the threshold domain comprises:
applying for first unsigned data of a target byte size from a memory;
and expanding the first unsigned data to obtain corresponding target number of bits, and obtaining a threshold domain based on the target number of bits.
12. The disc management method according to claim 11, 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 unfolding the first unsigned data to obtain a corresponding target number of bits and obtaining a threshold domain based on the target number of bits by a disk management hardware module of a firmware layer in the disk array card.
13. The method of claim 1, wherein before the bits included in the threshold are used as a bitmap of a disk and the threshold is used to sequentially perform a suspend operation on a corresponding disk in a current threshold, the method further includes:
and applying for second unsigned data with a target byte size from the memory, and using the second unsigned data as a threshold pointer.
14. The method of claim 13, wherein said using the second unsigned data as a threshold pointer comprises:
and executing 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.
15. The method according to claim 1, wherein the defining a threshold for the raid card according to the size of the threshold domain includes:
defining a threshold aiming at the disk array card in a macro definition mode according to the size of the threshold domain;
correspondingly, the disk management method further includes:
the threshold is modified by modifying a string in the macro definition.
16. The disk management method according to any one of claims 1 to 15, wherein the moving the threshold within the threshold refers to sequentially performing a suspension operation on corresponding disks within a current threshold, including:
determining the number of the logic equipment for starting to hang the disk in the disk array card;
and adjusting the threshold pointer to the first bit in the threshold, and executing the hang-down operation from the initial hang-down disk according to the logic device number.
17. The method according to claim 16, wherein the determining a logical device number of an initial suspended disk in the disk array card comprises:
if a target logic device number sent by a user is obtained, the target logic device number is used as a logic device number of an initial suspended disk in the disk array card;
and if the target logic device number sent by the user is not acquired, taking the first logic device number as the logic device number of the initial suspended disk in the disk array card.
18. A disk management apparatus, comprising:
the threshold determining module is used for acquiring a threshold domain and defining a threshold aiming at the disk array card according to the size of the threshold domain;
the hang-down module is used for taking the bit contained in the threshold as a bitmap of a disk, and the move of the threshold in the threshold refers to that the hang-down operation is sequentially executed aiming at the corresponding disk in the current threshold;
and the threshold moving module is used for moving the threshold after all the corresponding disks in the current threshold are hung down, and sequentially executing the hanging down operation on the corresponding disks in the moved threshold by using the threshold finger until all the disks in the disk array card are hung down.
19. 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 of claims 1 to 17.
20. A computer-readable storage medium for storing a computer program; wherein the computer program, when executed by a processor, implements a disk management method as claimed in any one of claims 1 to 17.
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