CN111813340A - Solid-state drive-based command response method, system, device and electronic device - Google Patents

Abstract

Embodiments of the present invention provide a method, system, device, and electronic device for responding to commands based on solid-state drives. Since the electronic device records block information of blocks included in each solid-state drive connected to the electronic device, the electronic device can The recorded block information selects the target block used to respond to the operation command to be responded from the blocks contained in each solid-state drive, and integrates each solid-state drive connected to the electronic device as a whole, avoiding each solid-state drive responding to the operation independently. The instruction reduces the difference in the usage of each solid-state hard disk, thereby facilitating the use and maintenance of the solid-state hard disk in the storage device.

Description

Solid-state drive-based command response method, system, device and electronic device

technical field

The present invention relates to the technical field of data storage, and in particular, to an instruction response method, system, device and electronic device based on a solid-state hard disk.

Background technique

Solid State Disk (SSD, Solid State Disk) is a hard disk made of solid-state electronic storage chip array, which has the advantages of high speed, high environmental adaptability and low noise. Based on these advantages, SSD is currently used in various fields to read and write data. has become a trend.

Due to the particularity of the solid state drive, each solid state drive includes a control unit, and each solid state drive responds to various operation commands by the control unit included in the solid state drive.

Due to the limited capacity of a single solid-state drive, in actual use, multiple solid-state drives are often integrated into one storage device for use, and since each solid-state drive responds to its own operation instructions, making The usage conditions of the solid-state drives included in a storage device are often quite different, which is not conducive to the use and maintenance of the solid-state drives in the storage device.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide an instruction response method, system, device and electronic device based on a solid-state hard disk, so as to facilitate the use and maintenance of the solid-state hard disk in the storage device. The specific technical solutions are as follows:

An embodiment of the present invention provides an instruction response method based on a solid-state hard disk, which is applied to an electronic device, where the electronic device is connected with a solid-state hard disk, and the method includes:

Obtain the operation command to be responded;

Based on the locally recorded block information, from all the blocks contained in the connected solid-state drives that match the type of the operation instruction to be responded, select a target block for responding to the operation instruction to be responded;

The solid state drive to which the target block belongs is controlled to respond to the to-be-responded operation command on the target block.

In an embodiment of the present invention, the operation instruction to be responded is: an instruction for instructing to remap the damaged block appearing in the solid-state hard disk;

Based on the locally recorded block information, from all the blocks contained in the connected solid-state drives that match the type of the operation instruction to be responded to, select a target block for responding to the operation instruction to be responded to ,include:

From the remapping blocks indicated by the locally recorded block information, a target block for remapping the damaged block is selected, wherein the remapping block includes: for all blocks that map corrupted blocks;

The controlling the solid state drive to which the target block belongs to respond to the operation command to be responded on the target block includes:

Controlling the solid state drive to which the target block belongs to remap the damaged block to the target block, and update the information of the target block in the block information.

In an embodiment of the present invention, the remapping block is configured by the electronic device according to information of services supported by each of the solid-state drives.

In an embodiment of the present invention, the operation instruction to be responded is: a data write instruction;

Based on the locally recorded block information, from all the blocks contained in the connected solid-state drives that match the type of the operation instruction to be responded to, select a target block for responding to the operation instruction to be responded to ,include:

From the data blocks indicated by the locally recorded block information, a target block for writing data is selected based on the remaining erasing times of each data block, wherein the data blocks include: All blocks in the SSD for writing data;

The controlling the solid state drive to which the target block belongs to respond to the operation command to be responded on the target block includes:

Controlling the solid state drive to which the target block belongs to write the data to be written indicated by the data writing instruction to the target block, and updating the information of the target block in the block information .

In an embodiment of the present invention, after obtaining the operation instruction to be responded, the method further includes:

When the data to be written is random data, the data to be written is cached in a preset cache space, and when the amount of cached data in the cache space is greater than a preset threshold, or the cache space When the cached data exceeds the preset duration without data writing, execute the data block indicated from the locally recorded block information, based on the remaining number of erasing and rewriting of each data block, select the data block for writing data. the steps of the target block;

and / or,

When the data to be written is sequential data, directly execute the data blocks indicated by the locally recorded block information, and select a target for writing data based on the remaining erasing times of each data block. block steps.

In an embodiment of the present invention, the electronic device includes a non-volatile storage medium, and the method further includes:

After the electronic device is powered off, move the data cached in the cache space to the non-volatile storage medium;

After the electronic device is powered on again, the data stored in the non-volatile storage medium is restored to the cache space.

An embodiment of the present invention further provides an instruction response system based on a solid-state hard disk, the system comprising: an electronic device and a solid-state hard disk connected to the electronic device, wherein:

The electronic device is used to obtain the operation instruction to be responded, and based on the locally recorded block information, from all the blocks contained in the connected solid-state hard disks that match the type of the operation instruction to be responded to, select the operation instruction to be responded to. in response to the target block of the operation command to be responded, and sending a control command indicating the operation command to be responded to the solid-state drive to which the target block belongs;

The solid-state disk to which the target block belongs is used for responding to the to-be-responded operation command on the target block after receiving the control command.

In an embodiment of the present invention, the operation instruction to be responded is: an instruction for instructing to remap the damaged block appearing in the solid-state hard disk;

The electronic device is specifically configured to select a target block for remapping the damaged block from the remapping block indicated by the locally recorded block information, wherein the remapping block includes: All blocks used to map damaged blocks in each connected SSD;

The solid-state drive to which the target block belongs, and is specifically used for remapping the damaged block to the target block, and generating information indicating the target block in the block information to the electronic device Instructions to make updates.

In an embodiment of the present invention, the remapping block is configured by the electronic device according to information of services supported by each of the solid-state drives.

In an embodiment of the present invention, the operation instruction to be responded is: a data write instruction;

The electronic equipment, specifically, selects a target block for writing data based on the remaining erasing and rewriting times of each data block in the data block indicated by the locally recorded block information, wherein the data area Blocks include: all blocks used to write data in each connected solid-state drive;

The solid-state drive to which the target block belongs, which is specifically used to write the data to be written indicated by the data writing instruction to the target block, and send an instruction to the electronic device for information about the block The instruction to update the information of the target block described in .

In an embodiment of the present invention, the electronic device further includes a cache space;

The electronic device is further configured to perform the following steps after obtaining the operation instruction to be responded:

When the data to be written is random data, the data to be written is cached in the preset cache space, and when the amount of cached data in the cache space is greater than a preset threshold, or the When the cached data in the cache space exceeds the preset time period and no data writing is performed, the data block indicated by the locally recorded block information is executed, and based on the remaining number of erasing and writing of each data block, the data block is selected for writing. Steps for the target block of data;

and / or,

When the data to be written is sequential data, directly execute the data blocks indicated by the locally recorded block information, and select a target for writing data based on the remaining erasing times of each data block. block steps.

In an embodiment of the present invention, the electronic device includes a non-volatile storage medium;

The electronic device is further configured to move the data cached in the cache space to the non-volatile storage medium after the power is turned off, and after the power is turned on again, move the data cached in the non-volatile storage medium to the non-volatile storage medium. The stored data is restored to the cache space.

An embodiment of the present invention further provides an instruction response device based on a solid-state hard disk, which is applied to an electronic device, where the electronic device is connected with a solid-state hard disk, and the device includes:

The command obtaining module is used to obtain the operation command to be responded;

The target block selection module is used for, based on the locally recorded block information, from all the blocks contained in the connected solid-state hard disks that match the type of the operation instruction to be responded, and selects a module for responding to the to-be-responded operation instruction. The target block of the operation instruction;

The instruction response module is configured to control the solid state drive to which the target block belongs to respond to the to-be-responded operation instruction on the target block.

In an embodiment of the present invention, the operation instruction to be responded is: an instruction for instructing to remap the damaged block appearing in the solid-state hard disk;

The target block selection module is specifically configured to select a target block for remapping the damaged block from the remapping block indicated by the locally recorded block information, wherein the remapping area The block includes: all the blocks used to map the damaged block in each connected SSD;

The instruction response module is specifically configured to control the solid-state hard disk to which the target block belongs to remap the damaged block to the target block, and perform an analysis on the information of the target block in the block information. renew.

In an embodiment of the present invention, the remapping block is configured by the electronic device according to information of services supported by each of the solid-state drives.

In an embodiment of the present invention, the operation instruction to be responded is: a data write instruction;

The target block selection module is specifically used to select the target block for writing data based on the remaining erasing times of each data block from the data block indicated by the locally recorded block information, wherein, The data blocks include: all blocks used for writing data in each connected solid-state hard disk;

The instruction response module is specifically configured to control the solid-state hard disk to which the target block belongs to write the data to be written indicated by the data write instruction to the target block, and to write the data in the block information to the target block. The information of the target block is updated.

In an embodiment of the present invention, the device further includes

A data cache module, configured to cache the to-be-written data to a preset cache space when the to-be-written data is random data after the instruction obtaining module obtains the to-be-responded operation instruction, and when the cache After the data volume of the cached data in the space is greater than a preset threshold, or when the cached data in the cache space exceeds a preset time period without data writing, the target block selection module is called;

and / or,

When the data to be written is sequential data, the target block selection module is directly called.

In an embodiment of the present invention, the electronic device includes a non-volatile storage medium, and the apparatus further includes:

The data recovery module is used to move the data cached in the cache space to the non-volatile storage medium after the electronic device is powered off, and after the electronic device is powered on again, restore the non-volatile storage medium to the nonvolatile storage medium. The data stored in the volatile storage medium is restored to the cache space.

An embodiment of the present invention further provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

memory for storing computer programs;

The processor is configured to implement any of the above-mentioned steps of the solid-state disk-based instruction response method when executing the program stored in the memory.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any one of the above-mentioned solid-state disk-based instruction responses are implemented method steps.

Embodiments of the present invention also provide a computer program product containing instructions, which, when running on a computer, enables the computer to execute any of the above-mentioned methods for responding to instructions based on solid-state drives.

Beneficial effects of the embodiment of the present invention:

In the method, system, device, and electronic device for responding to commands based on solid-state drives provided by the embodiments of the present invention, since the electronic device records the block information of the blocks included in each solid-state drive connected to the electronic device, the electronic device can Block information, select the target block used to respond to the operation command to be responded from the blocks contained in each solid-state drive, and combine each solid-state drive connected to the electronic device as a whole, so as to avoid each solid-state drive responding to the operation command independently, The difference in usage of each solid-state hard disk is reduced, thereby facilitating the use and maintenance of the solid-state hard disk in the storage device.

Of course, it is not necessary for any product or method of the present invention to achieve all of the advantages described above at the same time.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other embodiments can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of an instruction response system based on a solid-state disk provided by an embodiment of the present invention.

FIG. 2 is a structural diagram of a solid-state disk in an instruction-response system based on a solid-state disk provided by an embodiment of the present invention.

FIG. 3 is a flowchart of a method for responding to an instruction based on a solid-state disk according to an embodiment of the present invention.

FIG. 4 is a flowchart of a method for responding to an instruction based on a solid-state disk provided by another embodiment of the present invention.

FIG. 5 is a flowchart of a method for responding to an instruction based on a solid state disk according to another embodiment of the present invention.

FIG. 6 is a schematic structural diagram of an instruction response system based on a solid-state disk provided by an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of an instruction response system based on a solid-state disk provided by another embodiment of the present invention.

FIG. 8 is a schematic structural diagram of an instruction response system based on a solid-state disk provided by yet another embodiment of the present invention.

FIG. 9 is a schematic structural diagram of an apparatus for responding to commands based on a solid-state disk according to an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to clearly describe the technical solutions provided by the embodiments of the present invention, firstly, the technical solutions provided by the embodiments of the present invention are briefly introduced from the perspective of the system as a whole. As shown in FIG. 1 , the embodiments of the present invention provide a solid-state drive based A command response system, the system includes electronic equipment and N solid-state hard disks connected to the electronic equipment, which are respectively distinguished by solid-state disk 1-solid-state disk N. As shown in FIG. 2 , an embodiment of the present invention further provides a schematic structural diagram of a solid-state hard disk. In each solid-state hard disk, Blk0-Blk1029 respectively represent each block included in the solid-state hard disk.

In the prior art, since each solid-state disk independently responds to the operation instruction it receives, each solid-state disk ignores the usage of other solid-state disks in the storage device when responding to the operation instruction. In addition, because it can only respond to operation commands independently, when all the remapping blocks reserved for a certain solid-state drive in the storage device are used, for the sake of data security, even if the solid-state drive contains other Continued use of the data blocks for reading and writing data, the solid state drive can no longer be used, resulting in serious waste. At the same time, because it can only respond to operation commands independently, when data writing is required, each solid-state drive only considers the writing situation of the blocks contained in itself, and then selects blocks in the blocks contained in itself. , it can only maintain the wear balance among the blocks in each SSD, but cannot maintain the wear balance among the blocks contained in each SSD in the storage device.

In order to solve the problems existing in the prior art, in the solid-state drive-based command response system as shown in FIG. 1 provided by an embodiment of the present invention, the electronic device records the block information of the blocks included in each solid-state drive in the system . Therefore, after receiving the operation instruction to be responded to, the electronic device can select the most suitable block for responding to the operation instruction to be responded from the system level.

Specifically, after the electronic device obtains the operation instruction to be responded to, the electronic device can, according to the recorded block information, select the type of operation instruction to be responded to from all the blocks contained in the connected solid-state drives that match the type of the operation instruction to be responded to. Responding to the target block of the operation command to be responded, and controlling the solid state disk to which the target block belongs to respond to the operation command to be responded on the target block. Exemplarily, when the electronic device selects Blk2 included in the solid-state drive 2 in FIG. 2 as the target block according to the recorded block information, the electronic device can control the solid-state drive 2 to respond to the operation command to be responded on its Blk2.

Since the electronic device records the block information of the blocks contained in each solid-state drive to which it is connected, the electronic device can, according to the recorded block information, select from the blocks contained in each solid-state drive for responding to the operation to be responded to. The target block of the instruction can combine each solid-state drive connected to the electronic device into a whole, which prevents each solid-state drive from responding to the operation command independently, reduces the difference in the usage of each solid-state drive, and is beneficial to the storage device. Use and maintenance of solid state drives.

At the same time, when all the remapping blocks reserved by a solid-state drive in the storage device are used, the solid-state drive can continue to be used, even if the solid-state drive is damaged again in the subsequent use process. In this case, the damaged block in the solid-state drive can also be remapped through the remapping block reserved by other solid-state drives in the system. This ensures that data security is maintained, and the remaining available solid-state drives are not wasted. block. At the same time, when data writing needs to be performed, the writing situation of the blocks contained in each solid-state drive in the system can be comprehensively considered, and then block selection is performed in all blocks in the system to ensure that each solid-state drive in the storage device contains Wear leveling between blocks.

The method, system, device, electronic device, and readable storage medium for responding to an instruction based on a solid-state disk disclosed in the embodiments of the present invention will be described in detail below.

An embodiment of the present invention provides an instruction response method based on a solid-state hard disk, which is applied to an electronic device, wherein the electronic device is connected with a solid-state hard disk. As shown in FIG. 3 , the method includes:

S301: Obtain the operation instruction to be responded.

S302: Based on the locally recorded block information, select a target block for responding to the to-be-responded operation instruction from all the blocks included in the connected solid-state drives that match the type of the to-be-responded operation instruction.

S303: Control the solid state drive to which the target block belongs to respond to the operation command to be responded on the target block.

The solid-state drive-based instruction response method provided in the embodiment of the present invention as shown in FIG. 3 , since the electronic device records the block information of the blocks included in each solid-state drive connected to it, the electronic device can record the block information according to the recorded area. Block information, select the target block used to respond to the operation command to be responded from the blocks contained in each solid-state drive, and combine each solid-state drive connected to the electronic device as a whole, avoiding each solid-state drive responding to the operation command independently, reducing The differences in the usage of each solid-state hard disk are eliminated, thereby facilitating the use and maintenance of the solid-state hard disks in the storage device.

In order to clearly describe the technical solutions of the embodiments of the present invention, the following steps describe the solid-state disk-based instruction response method provided by the embodiments of the present invention as shown in FIG. 3 .

For step S301, the obtained operation instruction to be responded may be an instruction for operating a block included in the solid-state hard disk connected to the electronic device. Optionally, the operation command to be responded obtained by the electronic device can be an external command received, such as a data write command indicating data storage, a read and write command to read stored data, etc., or it can be a write command to the block. In the process of data entry, when a write error occurs, the solid-state drive feeds back the write error information to the electronic device. At this time, the write error information fed back by the solid-state drive can be regarded as a remapping command for remapping the damaged block.

For step S302, the locally recorded block information may be one or more of the location information, category information, status information, remapping information, erasure information and other information of the blocks contained in the solid-state hard disk connected to the electronic device.

The location information of the block may be information indicating the solid state drive to which the block belongs, such as an identifier of the solid state drive.

The type information of the above-mentioned block can be the block type that represents the block to which the block belongs. Optionally, the block contained in the solid-state hard disk can include a block belonging to a data type and a block belonging to a remapping type, wherein the block belonging to the data type The block that belongs to the remapping type is the data block, which is used for reading and writing data, and the block belonging to the remapping type is the remapping block, which is used for remapping the damaged data block.

The status information of the above block represents various statuses of the block, such as full (full), empty (empty), bad (bad) and wirte_enable (write protection), where full and empty are used to represent the block in the block. The state of the stored data, in one embodiment of the present invention, may also include the size of the stored data in the block, that is, when a block is neither full nor empty, record the data written in the block size or the remaining amount of writable data. The above bad is used to distinguish whether it is damaged. When the block is damaged, its state information contains bad, and when the block is not damaged, its state information does not contain bad.

The remapping information of above-mentioned block is used to record the information relevant to remapping, for data block, when it is damaged, record the remapping block that this data block is remapped in its corresponding remapping information For the remapping block, the corresponding remapping information may include whether the remapping has been performed, and when the remapping has been performed, the relevant information of the remapped data block may be included.

The erasure information of the block is used to indicate the remaining erasable times of the block, which may include the maximum erasable times of the block and the current erasable times, or directly the remaining erasable times of the block.

In an embodiment of the present invention, the types of the operation commands to be responded can be divided into data writing types and remapping types, wherein, in each solid state disk connected to the electronic device, the data writing type and the remapping type include blocks. Corresponding blocks are different, wherein, the block matching the data writing type is the data block in all the blocks, in one embodiment of the present invention, it can be the data not in the full state and the bad state block, and the block matching the remapping type is the remapping block in all the blocks. In one embodiment of the present invention, it may be the remapping block that has not been remapped.

Optionally, from all the blocks contained in each solid-state drive connected to the electronic device that match the type of the operation instruction to be responded to, there can be many ways to select the target block used to respond to the operation instruction to be responded to, and can be combined with the specific operation instruction. For example, different selection methods can be determined according to the type of the operation command to be responded. When it is a data writing type, the selection can be made with equal probability. In order to maintain the wear balance between the blocks, it can also be selected according to each Select the appropriate block for the erasing and writing information of the block. When it is a remapping type, it can be selected with equal probability, or the remapping block that belongs to the same solid-state drive as the damaged block can be preferentially selected.

For step S303, different operation commands to be responded have different ways of responding. For the data write operation command and the data read operation command, the response method is to control the SSD to which the target block belongs to write to the target block first. For the remapping command, the response mode can be to control the solid state disk to which the target block belongs to use the target block to remap the damaged block.

Below in conjunction with specific embodiment, the technical scheme of the present invention is described:

In the case where the operation instruction to be responded is an instruction for instructing remapping of damaged blocks in the solid-state drive, as shown in FIG. 4 , an embodiment of the present invention further provides a solid-state drive-based command response method , applied to an electronic device, wherein the electronic device is connected with a solid-state hard disk, as shown in FIG. 4 , the method includes:

S401: Obtain a remapping instruction.

In this step, the remapping instruction is an instruction for instructing to perform remapping on the damaged block in the solid state disk. For example, when writing data into a block, when a writing error occurs, the solid-state drive feeds back the writing error information to the electronic device, and the feedback writing error information can be regarded as a remapping command.

S402: From the remapping block indicated by the locally recorded block information, select a target block for remapping the damaged block, wherein the remapping block includes: each connected solid-state hard disk is used for remapping the damaged block. The corrupted block is mapped to all blocks.

In this step, the locally recorded block information may be recorded in a mapping table (Mapping Table) of an FTL (Flash Translation Layer, flash translation layer). The remapping block indicated by the locally recorded block information may be the type information in the locally recorded block information is a remapping type block.

In one embodiment, the remapping blocks included in the solid-state drive may be configured by the electronic device according to information of services supported by each solid-state drive. For example, when the solid-state drive is initialized, the type of each block in the solid-state drive can be determined according to the preset proportion of the solid-state drive OP (Over-Provisioning, reserved space), that is, to determine which blocks in the solid-state drive are Data blocks, which blocks are remapping blocks.

Exemplarily, the set proportion is 10%, and the solid-state drive contains 100 blocks, then when the solid-state drive is initialized, 10 blocks are selected from the 100 blocks included as the remapping block, and the remaining blocks are 90 blocks as data blocks.

Optionally, in the remapping block indicated by the locally recorded block information, there can be various methods for selecting the target block for remapping the damaged block, which can be determined in combination with actual needs, such as equal probability selection. , it is also possible to first determine the remapping block that is not remapped to other damaged blocks in the remapping block, and then further select in the determined remapping block, and can also combine the damaged block The information is selected, for example, a remapped block that belongs to the same solid state drive as the damaged block and has not been remapped to other damaged blocks is preferentially selected.

Exemplarily, in the schematic structural diagram of the solid-state drive shown in FIG. 2 provided by the embodiment of the present invention, it is assumed that Blk0-Blk1021 in each solid-state drive are data blocks, and Blk1022-Blk1029 are remapping blocks. When Blk0 in 1 is damaged, if there are unused remapping blocks Blk1028 and Blk1029 in SSD 1, you can use either block Blk1028 or Blk1029 to remap Blk0. Remap block, and SSD 2 has unused remapping block Blk1027, then use Blk1027 in SSD 2 to remap Blk0 in SSD 1.

S403: Control the solid state drive to which the target block belongs to remap the damaged block to the target block, and update the information of the target block in the block information.

In this step, the solid-state drive to which the target block belongs is controlled to remap the damaged block to the target block, that is, the data that needs to be written to the damaged block is written to the target block. Before entering the data, the data stored in the damaged block can also be moved to the target block.

After the remapping is completed, the information of the target block in the block information can be synchronized to update, for example, the remapping information of the target block is not remapped and the remapping has been updated, and the identifier of the corresponding damaged block is added. . In an embodiment of the present invention, the information of the damaged block in the block information may also be updated. For example, the status information of the damaged block is updated to bad, and the identifier of the target block is added to its remapping information.

In the solid-state drive-based command response method as shown in FIG. 4 provided by the embodiment of the present invention, when all the remapping blocks reserved for a solid-state drive in the storage device are used, the solid-state drive can continue to be used. Even if the block of the solid-state drive is damaged during subsequent use, the damaged block in the solid-state drive can be remapped through the remapping blocks reserved by other solid-state drives in the system. , while ensuring data security is maintained, the remaining available blocks in the SSD will not be wasted.

In the case where the operation command to be responded is a data writing command, as shown in FIG. 5 , an embodiment of the present invention further provides a command response method based on a solid-state hard disk, which is applied to an electronic device, wherein the electronic device is connected with a solid-state disk. hard disk, as shown in Figure 5, the method includes:

S501: Receive a data write instruction.

In this step, when data needs to be stored, the electronic device receives a data write instruction that instructs to store the data.

In one embodiment, in order to avoid frequent erasing and rewriting of blocks, when the data to be written is random data, the data to be written may be cached in a preset cache space first. After the amount of data is greater than the preset threshold, or when the cached data in the cache space exceeds the preset time period without data writing, step S502 is performed; and/or when the data to be written is sequential data, S502 is directly performed.

Among them, the above random data is the data input by random IO (Input Output, input and output). The amount of data in each random IO is small. If it is directly written into the block, the block where the data is written may be lost. There is free storage space, which results in a waste of storage space. At the same time, when data needs to be written again, it is necessary to save the data in the block first, then erase the data stored in the block, and finally transfer the new data to the block. The saved data is written to the block together, resulting in frequent erasing and rewriting of the block.

As mentioned above, the cache space may be a DRAM (Dynamic Random Access Memory, dynamic random access memory) cache included in the electronic device, such as a memory stick.

S502: From the data blocks indicated by the locally recorded block information, based on the remaining erasing times of each data block, select a target block for writing data, wherein the data block includes: each connected All blocks in the SSD used to write data.

In this step, the locally recorded block information can be recorded in the block (block) management linked list, and the data block indicated by the locally recorded block information can be the area in which the type information in the locally recorded block information is the data type piece.

Optionally, the remaining erasing times of each data block can be calculated by the maximum erasing times and the erasing times of each data block, that is, the remaining erasing times=maximum erasing times-erasing times. , after writing data in each data block, the number of erasing and writing is increased by 1, and the remaining number of erasing and writing in response is decreased by 1.

Among them, based on the remaining number of erasing and writing of each data block, the method of selecting the target block for writing data may include various methods. From each block, the block with the largest number of remaining erasing and writing is selected as the target block, or a plurality of data blocks with the highest remaining number of erasing and writing can be selected first, and then the selected data blocks are selected with equal probability. Select the target block.

S503: Control the solid-state hard disk to which the target block belongs to write the data to be written indicated by the data writing instruction to the target block, and update the information of the target block in the block information.

In this step, the solid-state drive to which the target block belongs is controlled to remap the damaged block to the target block, that is, the data that needs to be written to the damaged block is written to the target block. Before entering the data, the data stored in the damaged block can also be moved to the target block.

After the remapping is completed, the information of the target block in the block information can be updated synchronously, and in one embodiment of the present invention, the information of the damaged block in the block information can also be updated. For example, the information of the target block is updated to have been remapped, and the information of the damaged block is added to the remapping information.

As shown in FIG. 5 , the solid-state drive-based command response method provided by the embodiment of the present invention compares the remaining erasing and rewriting times of solid-state drives of different models and wear levels when data writing needs to be performed, taking into account the relationship with electronic equipment. The writing status of the blocks contained in each connected solid-state hard disk, and then block selection is performed in all blocks in the system to ensure the wear balance among the blocks contained in each solid-state hard disk in the storage device, one embodiment of the present invention , the wear degree of the blocks in the SSD can be slowed down by caching the data first and then writing the data.

On the basis of the solid-state disk-based command response method as shown in FIG. 5 provided in the embodiment of the invention, in order to prevent data loss caused by sudden power failure, the electronic device also includes a non-volatile storage medium. When the electronic device is running During the process, after the electronic device is powered off, the data cached in the cache space can be moved to the non-volatile storage medium, and the data stored in the non-volatile storage medium can be restored to the cache space until the electronic device is powered on again. Optionally, the electronic device also includes a minimum system battery for providing power after a power outage.

Based on the same inventive concept, according to a method for responding to an instruction of a solid-state hard disk provided by an embodiment of the present invention, as shown in FIG. 6 , an embodiment of the present invention also provides a system for responding to an instruction of a solid-state hard disk. The system includes: an electronic device 601 and an An electronic device-connected solid-state drive 602, where:

The electronic device 601 is used to obtain the operation instruction to be responded, and based on the locally recorded block information, from all the blocks contained in the connected solid-state drives that match the type of the operation instruction to be responded to, select the operation instruction to be responded to. Responding to the target block of the operation instruction, and sending a control instruction indicating the operation instruction to be responded to to the solid-state drive 602 to which the target block belongs;

The solid state disk 602 to which the target block belongs is used for responding to the operation command to be responded on the target block after receiving the control command.

In an embodiment of the present invention, the operation instruction to be responded is: an instruction for instructing to remap the damaged block appearing in the solid-state drive 602;

The electronic device 601 is specifically configured to select a target block for remapping the damaged block from the remapping block indicated by the locally recorded block information, wherein the remapping block includes: All blocks in the hard disk used to map corrupted blocks;

The solid-state drive 602 to which the target block belongs is specifically used to remap the damaged block to the target block, and send an instruction to the electronic device 601 for updating the information of the target block in the block information.

In an embodiment of the present invention, the remapping block is configured by the electronic device 601 according to the information of the services supported by each solid state disk 602 .

In an embodiment of the present invention, the operation instruction to be responded is: a data write instruction;

The electronic device 601, specifically in the data block indicated from the locally recorded block information, selects the target block for writing data based on the remaining erasing and rewriting times of each data block, wherein the data block includes: All blocks used for writing data in each of the connected solid-state drives 602;

The solid-state drive 602 to which the target block belongs, is specifically used to write the data to be written indicated by the data writing instruction to the target block, and send an instruction to the electronic device 601 to update the information of the target block in the block information instruction.

In the solid-state drive-based command response system as shown in FIG. 6 provided by the embodiment of the present invention, since the electronic device records the block information of the blocks included in each solid-state drive connected to the electronic device, the electronic device can Block information, select the target block used to respond to the operation command to be responded from the blocks contained in each solid-state drive, and combine each solid-state drive connected to the electronic device as a whole, avoiding each solid-state drive responding to the operation command independently, reducing the The differences in the usage of each solid-state hard disk are eliminated, thereby facilitating the use and maintenance of the solid-state hard disks in the storage device. In addition, while ensuring data security, the remaining available blocks in the solid state drive are not wasted, and the wear balance among the blocks included in each solid state drive in the system can be ensured.

On the basis of the instruction response system of the solid-state hard disk provided in FIG. 6 , as shown in FIG. 7 , an embodiment of the present invention further provides an instruction response system of the solid-state hard disk. The system includes: an electronic device 601 and a connection with the electronic device. The solid-state disk 602, the electronic device 601, further includes a cache space 701, wherein:

The electronic device 601 is further configured to perform the following steps after obtaining the operation instruction to be responded:

When the data to be written is random data, the data to be written is cached in the preset cache space 701 , when the amount of cached data in the cache space 701 is greater than the preset threshold, or the cached data in the cache space 701 exceeds the preset threshold When the duration is not written in data, perform the step of selecting the target block for writing data based on the remaining erasing and rewriting times of each data block in the data block indicated by the block information of the local record;

and / or,

When the data to be written is sequential data, directly execute the step of selecting a target block for writing data based on the remaining erasing times of each data block in the data blocks indicated by the locally recorded block information .

In the solid-state drive-based command response system as shown in FIG. 7 provided by the embodiment of the present invention, since the electronic device records the block information of the blocks included in each solid-state drive connected to it, the electronic device can record the block information according to the recorded area. Block information, select the target block used to respond to the operation command to be responded from the blocks contained in each solid-state drive, and combine each solid-state drive connected to the electronic device as a whole, avoiding each solid-state drive responding to the operation command independently, reducing the The differences in the usage of each solid-state hard disk are eliminated, thereby facilitating the use and maintenance of the solid-state hard disks in the storage device. In addition, while ensuring data security, the remaining available blocks in the solid state drive are not wasted, and the wear balance among the blocks included in each solid state drive in the system can be ensured. At the same time, frequent erasing and writing of blocks can also be avoided.

On the basis of the instruction response system of the solid-state hard disk provided in FIG. 7 , as shown in FIG. 8 , an embodiment of the present invention further provides an instruction response system of the solid-state hard disk. The system includes: an electronic device 601 and a connection with the electronic device. The solid-state disk 602, the electronic device 601, further includes a cache space 701 and a non-volatile storage medium 801, wherein:

The electronic device 601 is further configured to move the data cached in the cache space 701 to the non-volatile storage medium 801 after power failure, and restore the data stored in the non-volatile storage medium 801 after the power is turned on again to cache space 701.

In the solid-state drive-based command response system as shown in FIG. 7 provided by the embodiment of the present invention, since the electronic device records the block information of the blocks included in each solid-state drive connected to it, the electronic device can record the block information according to the recorded area. Block information, select the target block used to respond to the operation command to be responded from the blocks contained in each solid-state drive, and combine each solid-state drive connected to the electronic device as a whole, avoiding each solid-state drive responding to the operation command independently, reducing the The differences in the usage of each solid-state hard disk are eliminated, thereby facilitating the use and maintenance of the solid-state hard disks in the storage device. In addition, while ensuring data security, the remaining available blocks in the solid state drive are not wasted, and the wear balance among the blocks included in each solid state drive in the system can be ensured. At the same time, it can also prevent data loss caused by sudden power failure.

Based on the same inventive concept, according to an instruction response method based on an SSD provided by an embodiment of the present invention, as shown in FIG. 9 , an embodiment of the present invention also provides an instruction response device based on a SSD, which is applied to electronic equipment, electronic equipment With a solid state drive attached, the device includes:

The instruction obtaining module 901 is used to obtain the operation instruction to be responded;

The target block selection module 902 is used for, based on the locally recorded block information, from all the blocks contained in the connected solid-state drives that match the type of the operation instruction to be responded, and selects a block for responding to the operation instruction to be responded to. target block;

The command response module 903 is configured to control the solid state drive to which the target block belongs to respond to the operation command to be responded on the target block.

In one embodiment of the present invention, the operation instruction to be responded is: an instruction for instructing to remap damaged blocks that appear in the solid-state hard disk;

The target block selection module 902 is specifically configured to select a target block for remapping the damaged block from the remapping block indicated by the locally recorded block information, wherein the remapping block includes: All blocks used to map damaged blocks in each SSD of ;

The instruction response module 903 is specifically configured to control the solid state disk to which the target block belongs to remap the damaged block to the target block, and update the information of the target block in the block information.

In an embodiment of the present invention, the remapping block is configured by the electronic device according to the information of the services supported by each solid-state hard disk.

In an embodiment of the present invention, the operation instruction to be responded is: a data write instruction;

The target block selection module 902 is specifically used to select a target block for writing data based on the remaining erasing times of each data block from the data blocks indicated by the locally recorded block information, wherein the data Blocks include: all blocks used for writing data in each connected solid-state drive;

The instruction response module 903 is specifically configured to control the solid-state hard disk to which the target block belongs to write the data to be written indicated by the data write instruction to the target block, and update the information of the target block in the block information.

In an embodiment of the present invention, the device further includes

The data cache module is used to cache the data to be written in the preset cache space when the data to be written is random data after the instruction obtaining module 901 obtains the operation instruction to be responded to, and when the data of the data has been cached in the cache space After the amount is greater than the preset threshold, or when the cached data in the cache space exceeds the preset time and no data is written, the target block selection module is called;

and / or,

When the data to be written is sequential data, the target block selection module is directly called.

In an embodiment of the present invention, the electronic device includes a non-volatile storage medium, and the apparatus further includes:

The data recovery module is used to move the data cached in the cache space to the non-volatile storage medium after the electronic device is powered off, and restore the data stored in the non-volatile storage medium after the electronic device is powered on again to the cache space.

In the solid-state drive-based command response device shown in FIG. 9 provided by the embodiment of the present invention, since the electronic device records the block information of the blocks included in each solid-state drive connected to it, the electronic device can record the block information according to the recorded area. Block information, select the target block used to respond to the operation command to be responded from the blocks contained in each solid-state drive, and combine each solid-state drive connected to the electronic device as a whole, avoiding each solid-state drive responding to the operation command independently, reducing the The differences in the usage of each solid-state hard disk are eliminated, thereby facilitating the use and maintenance of the solid-state hard disks in the storage device.

An embodiment of the present invention further provides an electronic device, as shown in FIG. 10 , including a processor 1001 , a communication interface 1002 , a memory 1003 and a communication bus 1004 , wherein the processor 1001 , the communication interface 1002 , and the memory 1003 pass through the communication bus 1004 complete communication with each other,

a memory 1003 for storing computer programs;

When the processor 1001 is used to execute the program stored in the memory 1003, the following steps are implemented:

Obtain the operation command to be responded;

Based on locally recorded block information, from the connected

Among all the blocks contained in each solid-state drive that match the type of the operation instruction to be responded, select a target block for responding to the operation instruction to be responded;

The solid state drive to which the target block belongs is controlled to respond to the to-be-responded operation command on the target block.

In the electronic device shown in FIG. 10 provided by the embodiment of the present invention, since the electronic device records the block information of the blocks included in each solid-state drive connected to the electronic device, the electronic device can, according to the The target block used to respond to the operation command to be responded is selected from the blocks contained in the solid-state drive, and the solid-state drives connected to the electronic device are combined into a whole, which avoids each solid-state drive responding to the operation command independently, and reduces the number of solid-state drives. The difference in usage conditions is conducive to the use and maintenance of solid-state drives in storage devices.

It should be noted that other embodiments in which the electronic device implements the solid-state drive-based command response are the same as the solid-state drive-based command response method mentioned in the foregoing method embodiments, and are not repeated here.

The communication bus mentioned in the above electronic device may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus or the like. The communication bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

The communication interface is used for communication between the above electronic device and other devices.

The memory may include random access memory (Random Access Memory, RAM), and may also include non-volatile memory (Non-Volatile Memory, NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

The above-mentioned processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; may also be a digital signal processor (Digital Signal Processing, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

In another embodiment provided by the present invention, a computer-readable storage medium is also provided, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any one of the above-mentioned solid-state hard disks is implemented. The steps of the command response method.

In another embodiment provided by the present invention, there is also provided a computer program product including instructions, which, when running on a computer, enables the computer to execute any one of the solid-state disk-based instruction response methods in the foregoing embodiments.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Each embodiment in this specification is described in a related manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system, apparatus, electronic device, computer-readable storage medium, and computer program product embodiments, since they are basically similar to the method embodiments, the description is relatively simple. Can.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (15)

1. A command response method based on a solid state disk is applied to electronic equipment, the electronic equipment is connected with the solid state disk, and the method comprises the following steps:

obtaining an operation instruction to be responded;

selecting a target block for responding to the operation instruction to be responded from all blocks contained in each connected solid state disk and matched with the type of the operation instruction to be responded based on the block information recorded locally;

and controlling the solid state disk to which the target block belongs to respond to the operation instruction to be responded on the target block.

2. The method of claim 1,

the operation instruction to be responded comprises: instructions for indicating remapping of a defective block occurring in the solid state disk;

the selecting, based on the locally recorded block information, a target block for responding to the operation instruction to be responded from all blocks contained in the connected solid state disks and matched with the type of the operation instruction to be responded includes:

selecting a target block for remapping the defective block from remapped blocks indicated by locally recorded block information, wherein the remapped blocks include: all blocks used for mapping the damaged blocks in the connected solid state disks;

the controlling the solid state disk to which the target block belongs to respond to the operation instruction to be responded on the target block includes:

and controlling the solid state disk to which the target block belongs to remap the damaged block to the target block, and updating the information of the target block in the block information.

3. The method of claim 2, wherein the remapping blocks are configured by the electronic device according to information about services supported by each of the solid state disks.

4. The method of claim 1,

the operation instruction to be responded comprises: a data write command;

the selecting, based on the locally recorded block information, a target block for responding to the operation instruction to be responded from all blocks contained in the connected solid state disks and matched with the type of the operation instruction to be responded includes:

selecting a target block for writing data based on the remaining number of erasures of each data block from data blocks indicated by the block information of the local recording, wherein the data blocks include: all blocks used for writing data in the connected solid state disks;

the controlling the solid state disk to which the target block belongs to respond to the operation instruction to be responded on the target block includes:

and controlling the solid state disk to which the target block belongs to write the data to be written, indicated by the data writing instruction, into the target block, and updating the information of the target block in the block information.

5. The method of claim 4, after obtaining the operation instruction to be responded to, further comprising:

when the data to be written is random data, caching the data to be written into a preset cache space, and when the data volume of the cached data in the cache space is larger than a preset threshold value or the cached data in the cache space exceeds a preset time and data writing is not carried out, executing a step of selecting a target block for writing the data in the data blocks indicated by the block information recorded from the local area based on the residual erasing times of each data block;

and/or the presence of a gas in the gas,

and when the data to be written is sequential data, directly executing the step of selecting a target block for writing the data based on the residual erasing times of each data block in the data blocks indicated by the block information recorded from the local.

6. The method of claim 5, wherein the electronic device comprises a non-volatile storage medium, the method further comprising:

after the electronic equipment is powered off, transferring the data cached in the cache space to the nonvolatile storage medium;

and after the electronic equipment is powered on again, restoring the data stored in the nonvolatile storage medium to the cache space.

7. An instruction response system based on a solid state disk, the system comprising: electronic equipment and with the solid state hard drives that electronic equipment is connected, wherein:

the electronic equipment is used for obtaining an operation instruction to be responded, selecting a target block for responding to the operation instruction to be responded from all blocks contained in each connected solid state disk and matched with the type of the operation instruction to be responded based on locally recorded block information, and sending a control instruction indicating the operation instruction to be responded to the solid state disk to which the target block belongs;

and the solid state disk to which the target block belongs is used for responding to the operation instruction to be responded on the target block after the control instruction is received.

8. The system of claim 7,

the operation instruction to be responded comprises: instructions for indicating remapping of a defective block occurring in the solid state disk;

the electronic device is specifically configured to select a target block for remapping the damaged block from remapped blocks indicated by locally recorded block information, where the remapped blocks include: all blocks used for mapping the damaged blocks in the connected solid state disks;

the solid state disk to which the target block belongs is specifically configured to remap the damaged block to the target block, and generate an instruction indicating to update information of the target block in the block information to the electronic device.

9. The system of claim 8, wherein the remapping blocks are configured by the electronic device according to information about services supported by each of the solid state disks.

10. The system of claim 7,

the operation instruction to be responded comprises: a data write command;

the electronic device specifically selects a target block for writing data based on the remaining erase count of each data block from among data blocks indicated by locally recorded block information, wherein the data blocks include: all blocks used for writing data in the connected solid state disks;

the solid state disk to which the target block belongs is specifically configured to write the data to be written, which is indicated by the data writing instruction, into the target block, and send an instruction indicating to update information of the target block in the block information to the electronic device.

11. The system of claim 10, wherein the electronic device further comprises a cache space;

the electronic device is further configured to, after executing the operation instruction to obtain a response to be received, execute the following steps:

when the data to be written is random data, caching the data to be written into a preset cache space, and when the data volume of the cached data in the cache space is larger than a preset threshold value or the cached data in the cache space exceeds a preset time and data writing is not performed, executing a step of selecting a target block for writing the data in the data blocks indicated by the block information recorded locally based on the residual erasing times of each data block;

and/or the presence of a gas in the gas,

and when the data to be written is sequential data, directly executing the step of selecting a target block for writing the data based on the residual erasing times of each data block in the data blocks indicated by the block information recorded from the local.

12. The system of claim 11, wherein the electronic device comprises a non-volatile storage medium;

the electronic device is further configured to move the data cached in the cache space to the nonvolatile storage medium after power failure, and restore the data stored in the nonvolatile storage medium to the cache space after power is re-turned on.

13. The utility model provides an instruction response device based on solid state hard drives, its characterized in that is applied to electronic equipment, electronic equipment is connected with solid state hard drives, the device includes:

the instruction obtaining module is used for obtaining an operation instruction to be responded;

the target block selection module is used for selecting a target block for responding to the operation instruction to be responded from all blocks which are contained in the connected solid state disks and are matched with the type of the operation instruction to be responded based on locally recorded block information;

and the instruction response module is used for controlling the solid state disk to which the target block belongs to respond to the operation instruction to be responded on the target block.

14. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;

a memory for storing a computer program;

a processor for implementing the method steps of any of claims 1-6 when executing a program stored in the memory.

15. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1 to 6.

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