WO2017000821A1 - Storage system, storage management device, storage device, hybrid storage device, and storage management method - Google Patents

Abstract

A storage system, a storage management device, a storage device, a hybrid storage device, and a storage management method. The storage system comprises the storage device and a manager. The storage device comprises multiple physical blocks. The manager is used for receiving a data write request and determining a logical block for a to be written data page (S1001); recording a logical address of the to be written data page into the logical block (S1002); and transmitting a data write instruction to a solid-state disk (SSD), where the data write instruction carries the to be written data page and logical space information of the to be written data page (S1003). The data write instruction is received, information of the logical block is acquired on the basis of the logical space information of the to be written data page in the data write instruction, and a physical block corresponding to the logical block is determined on the basis of the information of the logical block (S1004); and the to be written data page is written into the physical block corresponding to the logical block (S1005). The method reduces work for a flash translation layer of the storage device, thus increasing the performance of the storage device.

Description

Storage system, storage management device, memory, hybrid storage device, and storage management method Technical field

The present invention relates to the field of storage technologies, and in particular, to a storage system, a storage management device, a memory, a hybrid storage device, and a storage management method.

Background technique

Solid state disk (SSD) has the advantages of high performance, low latency, low power consumption, and strong environmental adaptability, and the cost is also decreasing. Therefore, the application is more and more common, and is generally used as a cache of a hard disk. It can also be used directly as a hard disk.

However, since the SSD cannot be written in place, only the original data can be erased before new data can be written, and the unit of data writing is a page (for example, 4 kb), and the unit of data erasing is a block (for example, 1024 KB). Unlike disk memory, the Flash translation layer (FTL) is required to make the file system operate as an SSD.

Generally, the operations that the FTL needs to perform include data writing, mapping of logical addresses and physical addresses, garbage collection, load balancing, and operations such as erasing physical blocks in the SSD. Thus, after a period of use, the performance of the SSD is also deteriorated due to garbage collection, block erasure, and the like.

Summary of the invention

Embodiments of the present invention provide a memory management apparatus and method for managing memory by a management layer, thereby improving memory performance.

A first aspect of the embodiments of the present invention provides a storage system, including a memory and a manager;

The memory includes a plurality of physical blocks;

The manager is configured to receive a data write request, and determine a logic block for the data page to be written, Recording a logical address of the page to be written into the logic block, and transmitting a data write instruction to the memory, the data write instruction carrying the page to be written and the page to be written Logical space information;

The memory is configured to receive the data write instruction, obtain information of the logic block by logical space information of the data page to be written in the data write instruction, and determine the logic according to information of the logic block The physical block corresponding to the block writes the page to be written into the physical block corresponding to the logical block.

With reference to the first aspect, in a first possible implementation manner, a correspondence between a physical block and a logical block is further pre-configured in the memory, where each physical block corresponds to one logical block, and each logical block corresponds to at least one physical a block; the memory, according to the logical block information, querying a correspondence between the physical block and the logical block to determine a physical block corresponding to the logical block.

With reference to the first aspect, in a second possible implementation, each logical block allocation identifier information is set in the memory, to identify whether each logical block is allocated a corresponding physical block;

Determining, by the memory, the physical block corresponding to the logical block according to the information of the logical block, the memory, by the memory, determining allocation identification information of the logical block according to information of the logical block, according to the allocation identifier of the logical block Determining whether the logical block is allocated a corresponding physical block, if it is determined that the logical block is not allocated a corresponding physical block, assigning a physical block to the logical block, and recording the allocated physical block and the logical block Correspondence relationship, wherein each physical block corresponds to one logical block, and each logical block corresponds to at least one physical block.

In conjunction with the first aspect, the first implementation, or the second implementation, in a third possible implementation, the logical space information of the data page to be written is the logical block information.

With reference to the first aspect, the first implementation manner, or the second implementation manner, in a fourth possible implementation manner, the logical space information of the data page to be written is a logical address of the data page to be written. Logging the logical block information of the memory in the memory, the storing The memory device receives the data write instruction, and determines information of the logic block according to the logical address of the data page to be written and the logical block information of the memory.

In conjunction with the fourth possible implementation of the first aspect, in a fifth possible implementation, the manager is further configured to determine, according to a data page corresponding to each logical block, a logical block to be erased, The memory sends an erase command, the erase command carrying information of the logic block to be erased;

The memory is further configured to receive the erase instruction, and determine a physical block to be erased according to the information of the logical block to be erased in the erase instruction and the correspondence between the physical block and the logical block. And erasing the physical block to be erased.

In conjunction with the fifth possible implementation of the first aspect, in a sixth possible implementation, after determining the physical block to be erased, the memory reallocates the physical block for the logical block to be erased, And updating the allocation identification information of the logical block to be erased, and then erasing the physical block to be erased.

In conjunction with the fifth or sixth possible implementation of the first aspect, in a seventh possible implementation, the manager is further configured to: when it is determined that the stored data page needs to be updated, The logical address of the stored data page recorded in the logical block corresponding to the stored data page is invalid;

The determining, by the manager, the logical block to be erased according to the data page corresponding to each logical block specifically includes: selecting a logical block having a large number of invalid logical addresses as the logical block to be erased.

In conjunction with the seventh possible implementation of the first aspect, in an eighth possible implementation, the manager is further configured to perform the erasing instruction before sending the erasing instruction to the memory The valid logical address in the logical block to be erased is migrated, and the data page corresponding to the valid logical address is determined to be a data page to be migrated, and a data migration instruction is sent to the memory, where the data migration instruction carries Information of the data page to be migrated;

The memory is further configured to migrate the data pages to be migrated in the memory according to the data migration instruction.

In a second aspect, a storage management apparatus is provided for use in a storage system including a memory, the memory including a plurality of physical blocks, and the storage management apparatus includes:

a logic block management module, configured to receive a data write request, determine a logical block for the data page to be written, and record the logical address of the data page to be written into the logic block;

a write indication module, configured to send a data write instruction to the memory according to the logic block determined by the logic block management module for the data page to be written, wherein the data write instruction carries the data to be written a page and the logical space information of the data page to be written; the data write instruction is used to instruct the memory to write a page to be written corresponding to the logical block to the logical block according to the data write instruction In the physical block.

With reference to the second aspect, in a first possible implementation, the logical space information of the data page to be written is the logical block information.

With reference to the second aspect, in a second possible implementation, the logical space information of the data page to be written is a logical address of the data page to be written, and the logical block information of the memory is recorded in the memory. Receiving the data write instruction, the memory determines the information of the logic block according to the logical address of the data page to be written and the logical block information of the memory.

With reference to the second aspect, the first implementation manner of the second aspect, or the second implementation manner, the storage management apparatus further includes an erasure instruction module, configured to determine, according to the data page corresponding to each logic block, the to-be-erased a logic block, sending an erase instruction to the memory, the erase instruction carrying information of the logic block to be erased, the erase instruction being used to indicate that the memory is according to the The information of the logical block to be erased and the corresponding relationship between the physical block and the logical block set in the memory, the physical block to be erased, and the physical block to be erased are erased.

In conjunction with the third possible implementation of the second aspect, in a fourth possible implementation, the logic block management module is further configured to: when it is determined that the stored data page needs to be updated, the stored The logical address of the stored data page recorded in the logical block corresponding to the data page is invalid;

The determining, by the erasing instruction module, the logic block to be erased specifically includes: selecting invalid A logical block having a large number of logical addresses is used as the logical block to be erased.

In conjunction with the fourth possible implementation of the second aspect, in a fifth possible implementation, the storage management apparatus further includes a migration instruction module, where the erase instruction module sends the wipe to the memory The migration instruction module is configured to migrate a valid logical address in the logic block, determine a data page corresponding to the valid logical address as a data page to be migrated, and send a data migration instruction to the memory, The data migration instruction carries information about the data page to be migrated, and the data migration instruction is used to instruct the memory to migrate the data page to be migrated in the memory.

In a third aspect, a memory is provided, comprising:

a receiving module, configured to receive a data write instruction, where the data write instruction carries logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager. Determining a logical block for the data page to be written, and recording the logical address of the data page to be written to the logical block after being sent;

a writing module, configured to acquire logical block information according to the logical space information of the data page to be written in the data write instruction, and determine a physical block corresponding to the logical block according to the logical block information, and the The write data page is written into the physical block corresponding to the logical block.

With reference to the third aspect, in a first possible implementation manner, a correspondence between a physical block and a logical block is further pre-configured in the memory, where each physical block corresponds to one logical block, and each logical block corresponds to at least one a physical block; the memory queries the corresponding relationship between the physical block and the logical block according to the logical block information to determine a physical block corresponding to the logical block.

With reference to the third aspect, in a second possible implementation, the allocation identifier information of each logical block is set in the memory, to identify whether the logical block is allocated a corresponding physical block;

Determining, by the memory, the physical block corresponding to the logical block according to the information of the logical block, the memory, by the memory, determining allocation identification information of the logical block according to information of the logical block, according to the allocation identifier of the logical block The information determines whether the logical block is allocated a corresponding physical block, and if it is determined that the logical block is not allocated a corresponding physical block, The logical block allocates a physical block, and records a correspondence between the allocated physical block and the logical block, where each physical block corresponds to one logical block, and each logical block corresponds to at least one physical block.

With reference to the third aspect, the first possible implementation manner of the third aspect, or the second possible implementation manner, in a third possible implementation manner, the logical space information of the data page to be written is the logic block information.

With reference to the third aspect, the first possible implementation manner of the third aspect, or the second possible implementation manner, in a fourth possible implementation manner, the logical space information of the data page to be written is the to-be-written Entering a logical address of the data page, wherein the memory records logical block information of the memory, the memory receives the data write instruction, according to the logical address of the data page to be written and the logical block information of the memory, Determining information of the logical block.

With reference to the fourth possible implementation of the third aspect, in a fifth possible implementation, the receiving module is further configured to receive an erasing instruction sent by the manager, where the erasing instruction is the manager After determining the logical block to be erased, the erasing instruction carries information of the logical block to be erased;

The memory further includes an erasing module, configured to determine a physical block to be erased according to information of the logical block to be erased in the erasing instruction and a correspondence between the physical block and the logical block, and The physical block to be erased is erased.

With reference to the fifth possible implementation of the third aspect, in a sixth possible implementation, after determining the physical block to be erased, the memory reallocates the physical block for the logical block to be erased, and Updating the allocation identification information of the logical block to be erased, and then erasing the physical block to be erased.

With reference to the fifth or the sixth possible implementation of the third aspect, in a seventh possible implementation, the receiving module is further configured to receive a data migration instruction sent by a manager, where the data migration instruction is After the manager determines the data page to be migrated in the logical block to be erased, the data page to be migrated is a data page corresponding to a valid logical address in the logical block to be erased, and the data The migration instruction carries the number to be migrated According to the information on the page;

The memory further includes a migration module, configured to migrate the data pages to be migrated in the memory according to the data migration instruction.

A fourth aspect, a hybrid storage device, comprising: a hard disk, the manager in any one of the implementations of the second aspect, and the memory according to any one of the third aspects, wherein the memory is The cache of disk storage.

A fifth aspect provides a storage management method for a storage system including a memory, the memory including a plurality of physical blocks, the method comprising:

Receiving a data write request to determine a logical block for the page to be written;

Logging the logical address of the page to be written into the logical block;

Sending a data write instruction to the memory, wherein the data write instruction carries logical space information of the page to be written and the page to be written; the data write instruction is used to indicate that the memory is The data write instruction writes a page to be written corresponding to the logical block into a physical block corresponding to the logical block.

With reference to the fifth aspect, in a first possible implementation, the logical space information of the data page to be written is the logical block information.

With reference to the fifth aspect, in a second possible implementation, the logical space information of the data page to be written is a logical address of the data page to be written, and the logical block information of the memory is recorded in the memory. Receiving the data write instruction, the memory determines the information of the logic block according to the logical address of the data page to be written and the logical block information of the memory.

With reference to the first or the second possible implementation manner of the fifth aspect, in a third possible implementation manner, the logic block to be erased is determined according to the data page corresponding to each logic block;

Sending an erase command to the memory, the erase command carrying information of the logic block to be erased, the erase command being used to instruct the memory to be erased according to the erase command Information of the logical block and the physical block and logic set in the memory Corresponding relationships of blocks, determining physical blocks to be erased, and erasing the physical blocks to be erased.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation, the method further includes: when determining that the stored data page needs to be updated, corresponding to the stored data page The logical address of the stored data page recorded in the logical block is invalid;

A logical block having a large number of invalid logical addresses is selected as the logical block to be erased.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation, before the sending the erasing instruction to the memory, the valid logical address in the logic block is migrated and determined The data page corresponding to the valid logical address is a data page to be migrated;

Transmitting, to the memory, a data migration instruction, where the data migration instruction carries information of the data page to be migrated, where the data migration instruction is used to instruct the memory to migrate the data page to be migrated in the memory .

In a sixth aspect, a storage management method is provided for use in a memory;

Receiving a data write instruction, the data write instruction carrying logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager, and the data write request is Entering a data page to determine a logical block, and recording the logical address of the data page to be written to the logical block and transmitting the logical address;

Acquiring logical block information according to the logical space information of the data page to be written in the data write instruction, determining a physical block corresponding to the logical block according to the logical block information, and writing the data page to be written The logical block corresponds to a physical block.

With reference to the sixth aspect, in a first possible implementation manner, a correspondence between a physical block and a logical block is further configured in the memory, where each physical block corresponds to one logical block, and each logical block corresponds to at least one Determining, according to the logical block information, the physical block corresponding to the logical block, according to the logical block information, querying a correspondence between the physical block and the logical block according to the logical block information to determine a physical body corresponding to the logical block Piece.

In conjunction with the sixth aspect, in a second possible implementation, the setting in the memory The allocation identifier information of the logical block is used to identify whether the logical block is allocated a physical block;

Determining, according to the logical block information, that the physical block corresponding to the logical block is specifically:

Determining, according to information of the logical block, allocation identification information of the logical block;

Determining, according to the allocation identification information of the logical block, whether the logical block is allocated a corresponding physical block;

If it is determined that the logical block is not allocated a corresponding physical block, allocate a physical block for the logical block, and record a correspondence between the allocated physical block and the logical block, where each physical block corresponds to one logical block, Each logical block corresponds to at least one physical block.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, or the second possible implementation manner, in a third possible implementation manner, the logical space information of the data page to be written is the logic Block information.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, or the second possible implementation manner, in a fourth possible implementation manner, the method further includes:

The logical space information of the data page to be written is a logical address of the data page to be written, the logical block information of the memory is recorded in the memory, and the memory receives the data write instruction, according to the waiting The logical address of the data page and the logical block information of the memory are written to determine information of the logical block.

In conjunction with the first or second possible implementation of the sixth aspect, in a fifth possible implementation, the method further includes:

Receiving an erase command, the erase command being sent after the manager determines a logic block to be erased, where the erase command carries information of the logic block to be erased;

Determining a physical block to be erased according to the information of the logical block to be erased and the corresponding relationship between the physical block and the logical block in the erasing instruction, and erasing the physical block to be erased.

With reference to the fourth or fifth possible implementation manner of the sixth aspect, in a sixth possible implementation, the method further includes receiving a data migration instruction, where the data migration instruction is After the processor determines the data page to be migrated in the logical block to be erased, the data page to be migrated is a data page corresponding to a valid logical address in the logical block to be erased, The data migration instruction carries information about the data page to be migrated;

The data pages to be migrated in the memory are migrated according to the data migration instruction.

In a seventh aspect, a storage manager is provided, including: a processor, a memory, a bus, and a communication interface;

The memory is for storing computer execution instructions, the processor is coupled to the memory via the bus, and when the computing device is running, the processor executes the computer-executed instructions stored by the memory to enable The storage manager is as follows:

Receiving a data write request to determine a logical block for the page to be written;

Logging the logical address of the page to be written into the logical block;

Sending a data write instruction to the memory, wherein the data write instruction carries logical space information of the page to be written and the page to be written; the data write instruction is used to indicate that the memory is The data write instruction writes a page to be written corresponding to the logical block into a physical block corresponding to the logical block.

In an eighth aspect, a storage manager is provided, including: a processor, a memory, a bus, and a communication interface;

The memory is for storing computer execution instructions, the processor is coupled to the memory via the bus, and when the computing device is running, the processor executes the computer-executed instructions stored by the memory to enable The storage manager performs the following methods:

Receiving a data write instruction, the data write instruction carrying logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager, and the data write request is Entering a data page to determine a logical block, and recording the logical address of the data page to be written to the logical block and transmitting the logical address;

Acquiring logical block information according to the logical space information of the data page to be written in the data write instruction, determining a physical block corresponding to the logical block according to the logical block information, and writing the data page to be written The logical block corresponds to a physical block.

In a ninth aspect, a computer readable medium is provided comprising computer executed instructions that, when executed by a processor of a computer, execute the following method:

Receiving a data write request to determine a logical block for the page to be written;

Logging the logical address of the page to be written into the logical block;

Sending a data write instruction to the memory, wherein the data write instruction carries logical space information of the page to be written and the page to be written; the data write instruction is used to indicate that the memory is The data write instruction writes a page to be written corresponding to the logical block into a physical block corresponding to the logical block.

In a tenth aspect, a computer readable medium is provided, comprising computer executed instructions that, when executed by a processor of a computer, execute the following method:

Receiving a data write instruction, the data write instruction carrying logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager, and the data write request is Entering a data page to determine a logical block, and recording the logical address of the data page to be written to the logical block and transmitting the logical address;

Acquiring logical block information according to the logical space information of the data page to be written in the data write instruction, determining a physical block corresponding to the logical block according to the logical block information, and writing the data page to be written The logical block corresponds to a physical block.

The invention establishes the correspondence between the logical block and the physical block in the SSD by dividing the SSD into a logical block and recording the logical address of the data page stored in the SSD in the logical block, so that the management layer can record through the logical block The logical address of the data page manages the data pages stored in the SSD, thereby reducing the operations performed by the FTL and improving the performance of the SSD.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following The drawings used in the embodiments or the description of the prior art will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art Other drawings can also be obtained from these drawings on the premise of creative labor.

FIG. 1 is an architectural diagram of a system used in the prior art for an SSD as a cache of an HDD.

FIG. 2 is a schematic diagram showing changes in data addresses when data is updated by an SSD in the prior art.

FIG. 3 is a structural diagram of a storage system according to an embodiment of the present invention.

4 is a schematic diagram of a correspondence relationship between a logical block and a physical block in the embodiment shown in FIG. 3.

Figure 5 is a diagram showing the change of logical addresses in a logical block when updating stored data in the embodiment shown in Figure 3.

6 is a schematic diagram of migration of data in a physical block to be erased prior to erasing a physical block in the embodiment shown in FIG.

FIG. 7 is a block diagram of a storage management apparatus according to an embodiment of the present invention.

FIG. 8 is a structural diagram of an SSD provided in an embodiment of the present invention.

FIG. 9 is a structural diagram of a hybrid storage device according to an embodiment of the present invention.

FIG. 10 is a flow chart of a method for a manager to write data to an SSD in an embodiment of the present invention.

FIG. 11 is a flowchart of a method for a manager to control an SSD for data erasing according to an embodiment of the present invention.

FIG. 12 is a schematic structural diagram of a computer in an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The memory in the embodiment of the present invention includes a plurality of physical blocks, the original data is erased to write new data, and the data is written in units of pages, and the data is erased in units of physical blocks. For SSD memory, the following example uses SSD as an example. Be explained.

FIG. 1 is an architectural diagram of a system used in the prior art for an SSD as a cache of an HDD. The frequently accessed data is generally stored in the SSD 101, and the SSD 101 and the HDD 102 are collectively managed by the manager 103. The manager 103 records which HDD 102 data is cached in the SSD 101 through the mapping table. When a request arrives, the manager 103 looks up the mapping table and determines whether the requested data is stored on the SSD 101. If the data is stored on the SSD 101, the data is read from the SSD 101; if the data is not on the SSD 101, the data is read from the HDD 102. If the data in the SSD 101 is full, the data is erased and the less frequently used data is replaced.

For the architecture shown in FIG. 1 , when the SSD 101 and the HDD 102 are used as a hybrid hard disk, the manager 103 may be a controller of the hybrid hard disk, and the SSD 101 and the HDD 102 respectively serve as independent devices. When accessing a computer, the manager 101 can be loaded into the operating system of the computer or loaded as a separate module in the computer. The SSD in Figure 1 is used as a cache of the HDD. In other application scenarios, the SSD can also be used as a storage device independently. The invention can be applied to the architecture shown in FIG. 1 and can also be applied to other application scenarios of the SSD.

The SSD is generally a NAND flash memory and may include multiple physical blocks (eg, 1024), each of which includes multiple physical pages (eg, 64). The physical page is the basic unit for reading and writing data, and the physical block is the basic unit for data erasure by SSD.

The SSD includes a Flash translation layer (FTL), and the FTL can be used to record a correspondence between a logical address (LBA) of a data and a physical block address (PBA) in the SSD. The reading or writing operation of the data is performed according to the correspondence between the logical address and the physical address.

In addition, when it is necessary to update the data on the SSD, the FTL may also write the updated “new data” to the idle physical page of the SSD 10 and update the correspondence between the LBA of the data and the PBA in the SSD, and Physical pages containing "old data" are marked as invalid pages. As shown in FIG. 2, if the data update request is to update the data in page 0, the FTL writes the updated page 0 data to the physical page with the physical address n+2, and the page 0 The physical page ID of the physical address n is invalid.

After the SSD is full, physical block replacement is required, and the FTL selects a physical block with a larger number of invalid pages to erase to free up space to store new data. However, since the physical block erased by the SSD may include a large number of valid data pages, it is necessary to migrate the data pages of the valid pages to another free location, and then wipe the data in the physical block that needs to be erased. In addition, this process is garbage collection.

In addition, FTL also performs operations such as load balancing.

The technical solution provided by the embodiments of the present invention aims to reduce the operations performed by the FTL. The technical solution provided by the embodiment of the present invention is to manage the correspondence between the logical block and the physical block in the SSD by dividing the SSD into a logical block and recording the logical address of the data page stored in the SSD in the logical block, thereby managing The layer can manage the physical blocks in the SSD and the data pages stored in the physical blocks by logical addresses of the data pages recorded in the logical blocks and the logical blocks, thereby reducing the operations performed by the FTL, thereby improving the performance of the SSD.

The technical solution will be described in detail below through different embodiments of the present invention.

As shown in FIG. 3, it is an architectural diagram of a storage system 30 according to an embodiment of the present invention. The storage system 30 includes a manager 301 and an SSD 302. The SSD 302 includes a plurality of physical blocks 303. The manager 301 receives a data write request, determines a logical block for the page to be written, records a logical address of the page to be written into the logical block, and sends a data write instruction to the SSD 302. The data write instruction carries logical space information of the data page to be written and the data page to be written, and the logical space information may be the logical block information or a logical address of the data page to be written.

The SSD 302 is configured to receive the data write instruction, obtain logic block information from logical space information of the data page to be written in the data write instruction, and determine a physical physics corresponding to the logic block according to the logic block information. Block 303, writing the page to be written into the physical block 303 corresponding to the logic block.

The data write request received by the manager 301 is used to write data to the SSD 302, and the data written to the SSD 302 may be the data written to the storage system 30 for the first time, or may be The data that is updated on the data stored on the SSD 302 may also be data that is loaded into the SSD 302 from a hard disk (not shown).

A corresponding relationship between the physical block 303 and the logical block is pre-configured in the SSD 302. As shown in FIG. 4, each physical block 303 corresponds to one logical block, and each logical block corresponds to at least one. Physical block 303. After the SSD 302 receives the data write command, the corresponding relationship between the physical block and the logical block may be queried according to the information of the logical block in the data write instruction, and the corresponding logical block is determined. The physical block 303 writes a page to be written corresponding to the logical block into the physical block 303 corresponding to the logical block. In the above manner, the logical block can be associated with the physical block, and the data page recorded in the physical block 303 is associated with the logical block by the logical address of the data page recorded in the logical block, that is, the management of the logical block can be performed. Management of the physical block 303 in the SSD 302 is implemented.

In another implementation manner, the correspondence between the logical block and the physical block 303 is not preset, but is dynamically allocated. Specifically, the allocation identifier information of the logical block is set in the memory, Determining whether the logical block is allocated a physical block 303 according to the logical block information, where the memory determines that the physical block 303 corresponding to the logical block is: the memory determines the logical block according to the logical block information. And determining, according to the allocation identifier information, whether the logical block is allocated a physical block 303, and if it is determined that the logical block is not allocated a physical block 303, assigning a physical block 303 to the logical block, and recording the Corresponding relationship between the allocated physical block 303 and the logical block determines that the allocated physical block 303 is the physical block 303 corresponding to the logical block.

Further, in this embodiment, when it is determined that the stored data page needs to be updated, the logical address of the stored data page recorded in the logical block corresponding to the stored data page is set to invalid. As shown in FIG. 5, if the data pages Page0, page3, page4, and page 5 recorded in the logical block A are updated, the logical addresses LA0 of the data pages Page0, page3, page4, and page 5 recorded in the logical block A, LA3, LA4, LA5 are set to be invalid.

Further, in this embodiment, the erasing of the physical block 303 in the SSD 302 can be controlled by the manager 301. Specifically, the manager 301 determines a logical block to be erased, and sends an erase command to the SSD 302. The instruction carries information of the logical block to be erased.

The SSD 302 receives the erase command, and determines a physical block 303 to be erased according to the information of the logical block to be erased in the erase command and the corresponding relationship between the physical block 303 and the logical block. And erasing the physical block 303 to be erased.

In this embodiment, the manager 301 selects a logical block having a large number of invalid logical addresses as the logical block to be erased.

After determining the physical block 303 to be erased, the SSD 302 reallocates the physical block for the logical block to be erased, and updates the allocation identification information of the logical block to be erased, and then erases the to-be-erased The erased physical block 303. The logic block to be erased can be reused immediately without waiting for the physical block to be erased, thereby improving the performance of the system.

Further, in this embodiment, the manager 301 further migrates the valid logical address in the physical block 303 to be erased before transmitting the erasure instruction to the SSD 302, and determines that the valid The data page corresponding to the logical address is the data page to be migrated, and sends a data migration instruction to the SSD 302, where the data migration instruction carries the information of the data page to be migrated.

The SSD 302 migrates the data pages to be migrated in the SSD 302 according to the data migration instruction.

The information of the data page to be migrated carried by the data migration instruction is a logical address of a data page to be migrated, and the SSD 302 migrates according to the data after receiving the data migration instruction. The logical address of the data page to be migrated in the instruction finds a data page to be migrated in the physical block to be erased, and then migrates the data page to be migrated.

As shown in FIG. 7, if the logical block A is selected as the logical block to be erased because the number of invalid logical pages is relatively large, but there are valid logical addresses LA16 and LA17 in the logical block A, the The valid logical addresses LA16 and LA17 are migrated to the logical block B.

After receiving the data migration instruction, the SSD 302 finds the data pages page 16 and page 17 to be migrated in the physical block B to be erased corresponding to the logical block A to be erased according to the logical addresses LA16 and LA17, and then waits The migrated data pages page 16 and page 17 are migrated to the physical block C corresponding to the logical block B. After the data migration is completed, the SSD 302 can erase the physical block A and the physical block B to be erased.

FIG. 7 is a block diagram of a storage management apparatus according to an embodiment of the present invention. The storage management device 70 is applied to a storage system, the storage system including an SSD, and the SSD includes a plurality of physical blocks. The first storage management device 70 includes a logical block management module 702, a write indication module 703, an erase indication module 704, and a migration indication module 705.

The logic block management module 702 is configured to receive a data write request for the data page to be written Determining a logical block, recording the logical address of the page to be written into the logical block.

The write indication module 703 is configured to send a data write instruction to the SSD according to the logic block determined by the logic block management module 702 for the data page to be written, where the data write instruction carries the Writing a data page and the logical space information of the data page to be written; the data write instruction is used to instruct the SSD to write the data page to be written corresponding to the logical block into the data according to the data write instruction The logical block corresponds to the physical block.

The logical space information of the data page to be written is the logical block information or the logical address of the data page to be written.

The data write instruction further instructs the SSD to query a correspondence between a physical block and a logical block set in the SSD according to the information of the at least one specified logical block in the data write instruction, and determine the at least one designation. The physical block corresponding to the logical block, the page to be written corresponding to the at least one specified logical block is written into the physical block corresponding to the at least one specified logical block.

The erasure indication module 704 is configured to determine a logic block to be erased, and send an erase instruction to the SSD, where the erase instruction carries information of the logic block to be erased, and the erase instruction is used to Instructing the SSD to determine a physical block to be erased according to the information of the logical block to be erased in the erasing instruction and the correspondence between the physical block and the logical block set in the SSD, and the erasing device The physical block to be erased.

Further, the logic block management module 702 sets the logical address of the stored data page recorded in the logical block corresponding to the stored data page when determining that the stored data page needs to be updated. Invalid;

The erase indication module 704 selects a logical block having a large number of invalid logical addresses as the logical block to be erased.

Before the erasing instruction module 704 sends the erasing instruction to the SSD, the migration instructing module 705 is configured to migrate the valid logical address in the logical block to be erased, and determine that the effective logical address is valid. The data page corresponding to the logical address is a data page to be migrated, and sends a data migration instruction to the SSD, where the data migration instruction carries information about the data page to be migrated, where the data migration instruction is used to indicate the SSD The data pages to be migrated in the SSD are migrated.

FIG. 8 is a block diagram of an SSD according to an embodiment of the present invention. The SSD80 It can be applied to a storage system that includes a manager. The SSD 80 includes a receiving module 802, a writing module 803, an erasing module 804, and a migration module 805.

The receiving module 802 is configured to receive a data write instruction, where the data write instruction carries logical space information of a page to be written and the page to be written, where the data write instruction is received by the manager after receiving data Requesting, determining a logical block for the data page to be written, and recording the logical address of the data page to be written after the logical block is sent;

The writing module 803 is configured to acquire logical block information according to the logical space information of the data page to be written in the data write instruction, and determine a physical block corresponding to the logical block according to the logical block information, The write data page is written into the physical block corresponding to the logical block.

The receiving module 802 is further configured to receive an erase command sent by the manager, where the erase command is sent after the manager determines a logic block to be erased, and the erase command carries the to-be-erased Information about the logical block.

The erasing module 804 is configured to determine, according to the information about the logical block to be erased in the erasing instruction and the corresponding relationship between the physical block and the logical block, the physical block to be erased, and the erasing device. The physical block to be erased.

The receiving module 802 is further configured to receive a data migration instruction sent by the manager, where the data migration instruction is sent by the manager after determining the data page to be migrated in the logical block to be erased, The data page to be migrated is a valid logical address in the logical block to be erased, and the data migration instruction carries information of the data page to be migrated.

The migration module 805 is configured to migrate the data pages to be migrated in the SSD according to the data migration instruction.

FIG. 9 is a structural diagram of a hybrid storage device 90 according to an embodiment of the present invention. The hybrid storage device 90 includes a manager 901, an SSD 902, and an HDD 903 as a cache of the HDD, the SSD 902 including a plurality of physical blocks 904.

The functions performed by the manager 901 are the same as those performed by the manager 301 of the storage system 30, and the functions performed by the SSD 902 are the same as those performed by the SSD 302 of the storage system 30, and are no longer Narration.

An embodiment of the present invention further provides a storage management method, where the storage management method is applicable to a storage management system, where the storage management system includes a manager and an SSD, The SSD includes a plurality of physical blocks. The storage management method includes three parts. The first part is a method for the manager to write data to the SSD, and the third part is the method for the manager to control the SSD for data erasing.

As shown in FIG. 10, a flowchart of a method for the manager to write data to the SSD.

In step S1001, the manager receives a data write request and determines a logical block for the page to be written.

Step S1002, the manager records the logical address of the page to be written into the logical block.

Step S1003: The manager sends a data write instruction to the SSD, where the data write instruction carries the logical space information of the page to be written and the page to be written.

Step S1004, the SSD receives the data write instruction, acquires logical block information according to the logical space information of the data page to be written in the data write instruction, and determines, according to the logical block information, the corresponding logical block. Physical block

Step S1005, the SSD writes the page to be written into a physical block corresponding to the logical block.

In the above method, the corresponding relationship between the physical block and the logical block is also pre-configured in the SSD, wherein each physical block corresponds to one logical block, and each logical block corresponds to at least one physical block, and then the step S1004 is performed according to the method. The logical block information determines that the physical block corresponding to the logical block is specifically: the physical block corresponding to the logical block is determined by querying a correspondence between the physical block and the logical block according to the logical block information.

Alternatively, the allocation identifier information of the logical block is set in the SSD, and is used to identify whether the logical block is allocated a physical block. Then, in step S1004, the physical layer corresponding to the logical block is determined according to the logical block information. The block is specifically:

Determining, according to the logical block information, allocation identification information of the logical block;

Determining, according to the allocation identifier information, whether the logical block is allocated a physical block; if it is determined that the logical block is not allocated a physical block, assigning a physical block to the logical block, and recording a correspondence between the allocated physical block and the logical block relationship;

It is determined that the allocated physical block is a physical block corresponding to the logical block.

As shown in FIG. 11, a flowchart of a method for the manager to control data erasure by the SSD.

In step S1101, the manager determines a logical block to be erased.

Step S1102: The manager migrates a valid logical address in the logical block to be erased, and determines that the data page corresponding to the valid logical address is a data page to be migrated.

Step 1103: The manager sends a data migration instruction to the SSD, where the data migration instruction carries information about the data page to be migrated.

Step 1104: The SSD receives the data migration instruction, and migrates the data page to be migrated in the SSD according to the information of the data page to be migrated in the data migration instruction.

Step 1105, the manager sends an erase command to the SSD, where the erase command carries information of the logical block to be erased.

Step 1106, the SSD receives the erase command, and determines a physical block to be erased according to the information of the logical block to be erased in the erase command and the corresponding relationship between the physical block and the logical block. And erasing the physical block to be erased.

In the above method, after determining the physical block to be erased, the method further includes reallocating the physical block for the logical block to be erased, and updating the allocation identification information of the logical block to be erased, and then deleting The physical block to be erased

The manager may determine a logical block to be erased according to the number of invalid logical addresses in the logical block, wherein the number of invalid logical addresses included in the logical block to be erased is greater than a preset value.

FIG. 12 is a schematic structural diagram of a storage manager according to an embodiment of the present invention. The storage manager of the embodiment of the present invention may include:

A processor 1701, a memory 1702, a system bus 1704, and a communication interface 1705. The CPU 1701, the memory 1702, and the communication interface 1705 are connected by the system bus 1704 and complete communication with each other.

The processor 1701 may be a single core or multi-core central processing unit, or a specific integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 1702 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.

Memory 1702 is for computer execution instructions 1703. Specifically, the computer executes the instructions Program code can be included in 1703.

When the storage manager is running, the processor 1701 runs the computer execution instructions 1703, which may perform the method flow described in FIG. 10 or FIG.

Embodiments of the present invention also provide a computer readable medium comprising computer executed instructions that, when executed by a processor of a computer, execute the method of FIG. 10 or FIG.

A person of ordinary skill in the art may understand that all or part of the steps of the foregoing embodiments may be completed by a program requesting related hardware, and the program may be stored in a computer readable storage medium, and the storage medium may include : ROM, RAM, disk or CD.

The data configuration and the method and device for the fallback provided by the embodiments of the present invention are described in detail. The principles and implementations of the present invention are described in the specific examples. The description of the above embodiments is only for help. The method of the present invention and its core idea are understood; at the same time, for those skilled in the art, according to the idea of the present invention, there are changes in the specific embodiments and application scopes. It should be understood that the invention is limited.

Claims (42)

A storage system including a memory and a manager; The memory includes a plurality of physical blocks; The manager is configured to receive a data write request, determine a logical block for the data page to be written, record a logical address of the data page to be written into the logic block, and send a data write instruction to the memory. The data write instruction carries the logical space information of the data page to be written and the data page to be written; The memory is configured to receive the data write instruction, obtain information of the logic block by logical space information of the data page to be written in the data write instruction, and determine the logic according to information of the logic block The physical block corresponding to the block writes the page to be written into the physical block corresponding to the logical block. The storage system according to claim 1, wherein a correspondence between a physical block and a logical block is further pre-configured in the memory, wherein each physical block corresponds to one logical block, and each logical block corresponds to at least one physical block. And the memory, according to the logic block information, querying a correspondence between the physical block and the logical block to determine a physical block corresponding to the logical block. The storage system according to claim 1, wherein each of the logical block allocation identification information is set in the memory, and is used to identify whether each of the logical blocks is allocated a corresponding physical block; Determining, by the memory, the physical block corresponding to the logical block according to the information of the logical block, the memory, by the memory, determining allocation identification information of the logical block according to information of the logical block, according to the allocation identifier of the logical block Determining whether the logical block is allocated a corresponding physical block, if it is determined that the logical block is not allocated a corresponding physical block, assigning a physical block to the logical block, and recording the allocated physical block and the logical block Correspondence relationship, wherein each physical block corresponds to one logical block, and each logical block corresponds to at least one physical block. The storage system according to any one of claims 1 to 3, wherein the logical space information of the page to be written is the logical block information. The storage system according to any one of claims 1 to 3, wherein the logical space information of the page to be written is a logical address of the page to be written, The logic block information of the memory is recorded in the memory, and the memory receives the data write instruction, and determines the information of the logic block according to the logical address of the page to be written and the logical block information of the memory. The storage system according to claim 2 or 3, wherein the manager is further configured to determine a logical block to be erased according to a data page corresponding to each logical block, and send an erase instruction to the memory. The erasing instruction carries information of the logical block to be erased; The memory is further configured to receive the erase instruction, and determine a physical block to be erased according to the information of the logical block to be erased in the erase instruction and the correspondence between the physical block and the logical block. And erasing the physical block to be erased. The storage system according to claim 6, wherein after determining the physical block to be erased, the memory reallocates the physical block for the logical block to be erased, and updates the logic to be erased The block is assigned identification information, and then the physical block to be erased is erased. The storage system according to claim 6 or 7, wherein the manager is further configured to record in the logical block corresponding to the stored data page when it is determined that the stored data page needs to be updated. The logical address of the stored data page is invalidated; The manager is configured to determine, according to the data page corresponding to each logical block, that the logical block to be erased comprises: a logical block having a large number of invalid logical addresses as the logical block to be erased. A storage system according to claim 8 wherein said manager is further operative to validate said logic block to be erased prior to transmitting said erase command to said memory The logical address is migrated, and the data page corresponding to the valid logical address is determined to be a data page to be migrated, and a data migration instruction is sent to the memory, where the data migration instruction carries information about the data page to be migrated ; The memory is further configured to migrate the data pages to be migrated in the memory according to the data migration instruction. A storage management device, which is applied to a storage system including a memory, the memory includes a plurality of physical blocks, and the storage management device includes: a logic block management module, configured to receive a data write request, determine a logical block for the data page to be written, and record the logical address of the data page to be written into the logic block; a write indication module, configured to send a data write instruction to the memory according to the logic block determined by the logic block management module for the data page to be written, wherein the data write instruction carries the data to be written a page and the logical space information of the data page to be written; the data write instruction is used to instruct the memory to write a page to be written corresponding to the logical block to the logical block according to the data write instruction In the physical block. The storage management device according to claim 10, wherein the logical space information of the page to be written is the logical block information. The storage management device according to claim 10, wherein the logical space information of the page to be written is a logical address of the page to be written, and the logical block information of the memory is recorded in the memory. Receiving the data write instruction, the memory determines the information of the logic block according to the logical address of the data page to be written and the logical block information of the memory. The storage management device according to claim 10 or 11 or 12, wherein the storage management device further comprises an erase command module for determining a logical block to be erased according to a data page corresponding to each logical block. Sending an erase command to the memory, the erase command carrying information of the logic block to be erased, the erase command being used to instruct the memory to be erased according to the erase command The information of the divided logical block and the correspondence between the physical block and the logical block set in the memory determine the physical block to be erased, and erase the physical block to be erased. The storage management device according to claim 13, wherein the logical block management module is further configured to: in the logic block corresponding to the stored data page, when it is determined that the stored data page needs to be updated Recording the logical address of the stored data page is invalid; The determining, by the erasing instruction module, the logic block to be erased specifically includes: selecting a logical block having a large number of invalid logical addresses as the logical block to be erased. A storage management apparatus according to claim 14, wherein said storage management means further comprises a migration instruction module, said migration instruction before said erase instruction module transmits said erase instruction to said memory The module is used for logic that is valid in the logic block The address is migrated, and the data page corresponding to the valid logical address is determined to be a data page to be migrated, and a data migration instruction is sent to the memory, where the data migration instruction carries the information of the data page to be migrated. The data migration instruction is used to instruct the memory to migrate the data page to be migrated in the memory. A memory, comprising: a receiving module, configured to receive a data write instruction, where the data write instruction carries logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager. Determining a logical block for the data page to be written, and recording the logical address of the data page to be written to the logical block after being sent; a writing module, configured to acquire logical block information according to the logical space information of the data page to be written in the data write instruction, and determine a physical block corresponding to the logical block according to the logical block information, and the The write data page is written into the physical block corresponding to the logical block. The memory according to claim 16, wherein the memory further pre-configures a correspondence between a physical block and a logical block, wherein each physical block corresponds to one logical block, and each logical block corresponds to at least one physical a block; the memory, according to the logical block information, querying a correspondence between the physical block and the logical block to determine a physical block corresponding to the logical block. The memory according to claim 16, wherein the memory defines allocation identification information of each logical block for identifying whether the logical block is allocated a corresponding physical block; Determining, by the memory, the physical block corresponding to the logical block according to the information of the logical block, the memory, by the memory, determining allocation identification information of the logical block according to information of the logical block, according to the allocation identifier of the logical block Determining whether the logical block is allocated a corresponding physical block, if it is determined that the logical block is not allocated a corresponding physical block, assigning a physical block to the logical block, and recording the allocated physical block and the logical block Correspondence relationship, wherein each physical block corresponds to one logical block, and each logical block corresponds to at least one physical block. The memory according to any one of claims 16 to 18, wherein the logical space information of the page to be written is the logical block information. A memory according to any of claims 16-18, wherein The logical space information to be written to the data page is the logical address of the data page to be written, and the logical block information of the memory is recorded in the memory, and the memory receives the data write instruction according to the to-be-written The logical address of the data page and the logical block information of the memory are determined, and the information of the logical block is determined. The memory according to claim 17 or 18, wherein said receiving module is further configured to receive an erase command sent by said manager, said erase command determining said logic block to be erased by said manager After being sent, the erase command carries information of the logic block to be erased; The memory further includes an erasing module, configured to determine a physical block to be erased according to information of the logical block to be erased in the erasing instruction and a correspondence between the physical block and the logical block, and The physical block to be erased is erased. The solid state memory according to claim 21, wherein after determining the physical block to be erased, the memory reallocates the physical block for the logical block to be erased, and updates the logic to be erased The block is assigned identification information, after which the physical block to be erased is erased. The memory according to claim 21 or 22, wherein the receiving module is further configured to receive a data migration instruction sent by the manager, where the data migration instruction determines, by the manager, the logic block to be erased After the data page to be migrated is sent, the data page to be migrated is a data page corresponding to a valid logical address in the logical block to be erased, and the data migration instruction carries the data page to be migrated. information; The memory further includes a migration module, configured to migrate the data pages to be migrated in the memory according to the data migration instruction. A hybrid storage device, comprising: a hard disk, the storage management device according to any one of claims 10-15, and the memory according to any one of claims 16 to 23, wherein said memory is said The cache of the hard disk. A storage management method is applied to a storage system including a memory, the memory including a plurality of physical blocks, the method comprising: Receiving a data write request to determine a logical block for the page to be written; Logging the logical address of the page to be written into the logical block; Transmitting a data write instruction to the memory, wherein the data write instruction carries the a logical space information to be written to the data page and the data page to be written; the data write instruction is used to instruct the memory to write the data page to be written corresponding to the logical block according to the data write instruction The physical block corresponding to the logical block. The storage management method according to claim 25, wherein the logical space information of the page to be written is the logical block information. The storage management method according to claim 25, wherein the logical space information of the page to be written is a logical address of the page to be written, and the logical block information of the memory is recorded in the memory. Receiving the data write instruction, the memory determines the information of the logic block according to the logical address of the data page to be written and the logical block information of the memory. The storage management method according to claim 25 or 26, wherein the method further comprises: Determining a logical block to be erased according to a data page corresponding to each logical block; Sending an erase command to the memory, the erase command carrying information of the logic block to be erased, the erase command being used to instruct the memory to be erased according to the erase command The information of the logical block and the corresponding relationship between the physical block and the logical block set in the memory, determine the physical block to be erased, and erase the physical block to be erased. The storage management method according to claim 28, wherein the method further comprises: When it is determined that the stored data page needs to be updated, the logical address of the stored data page recorded in the logical block corresponding to the stored data page is invalid; A logical block having a large number of invalid logical addresses is selected as the logical block to be erased. The storage management method according to claim 29, wherein the method further comprises: Before the sending the erasing instruction to the memory, the logical address that is valid in the logic block is migrated, and the data page corresponding to the valid logical address is determined to be the data page to be migrated; Transmitting, to the memory, a data migration instruction, where the data migration instruction carries information of the data page to be migrated, where the data migration instruction is used to instruct the memory to migrate the data page to be migrated in the memory . A storage management method, comprising: Receiving a data write instruction, the data write instruction carrying logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager, and the data write request is Entering a data page to determine a logical block, and recording the logical address of the data page to be written to the logical block and transmitting the logical address; Acquiring logical block information according to the logical space information of the data page to be written in the data write instruction, determining a physical block corresponding to the logical block according to the logical block information, and writing the data page to be written The logical block corresponds to a physical block. The storage management method according to claim 31, wherein the memory further pre-configures a correspondence between a physical block and a logical block, wherein each physical block corresponds to one logical block, and each logical block corresponds to at least one Determining, according to the logical block information, the physical block corresponding to the logical block, according to the logical block information, querying a correspondence between the physical block and the logical block according to the logical block information to determine a physical body corresponding to the logical block Piece. The storage management method according to claim 31, wherein the storage identifier information of the logical block is set in the memory, and is used to identify whether the logical block is allocated a physical block; Determining, according to the logical block information, that the physical block corresponding to the logical block is specifically: Determining, according to information of the logical block, allocation identification information of the logical block; Determining, according to the allocation identification information of the logical block, whether the logical block is allocated a corresponding physical block; If it is determined that the logical block is not allocated a corresponding physical block, allocate a physical block for the logical block, and record a correspondence between the allocated physical block and the logical block, where each physical block corresponds to one logical block, Each logical block corresponds to at least one physical block. The storage management method according to any one of claims 31 to 33, wherein the logical space information of the page to be written is the logical block information. The storage management method according to any one of claims 31 to 33, wherein the logical space information of the page to be written is a logical address of the page to be written, and the memory is recorded in the memory. Logic block information, the memory receiving the data write instruction, according to the logical address of the data page to be written and the logic of the memory Editing block information to determine information of the logical block. The storage management method according to claim 32 or 33, further comprising: Receiving an erase command, the erase command being sent after the manager determines a logic block to be erased, where the erase command carries information of the logic block to be erased; Determining a physical block to be erased according to the information of the logical block to be erased and the corresponding relationship between the physical block and the logical block in the erasing instruction, and erasing the physical block to be erased. The storage management method according to claim 36, further comprising: after determining the physical block to be erased, further comprising: Re-allocating the physical block for the logical block to be erased, and updating the allocation identification information of the logical block to be erased. The storage management method according to claim 36 or 37, further comprising: Receiving a data migration instruction, where the data migration instruction is sent by the manager after determining the data page to be migrated in the logical block to be erased, where the data page to be migrated is in the logic block to be erased a data page corresponding to the valid logical address, where the data migration instruction carries information about the data page to be migrated; The data pages to be migrated in the memory are migrated according to the data migration instruction. A storage manager, comprising: a processor, a memory, a bus, and a communication interface; The memory is for storing computer execution instructions, the processor is coupled to the memory via the bus, and when the computing device is running, the processor executes the computer-executed instructions stored by the memory to enable The storage manager is as follows: Receiving a data write request to determine a logical block for the page to be written; Logging the logical address of the page to be written into the logical block; Sending a data write instruction to the memory, wherein the data write instruction carries logical space information of the page to be written and the page to be written; the data write instruction is used to indicate that the memory is The data write instruction writes the corresponding logical block to be written The incoming data page is written into the physical block corresponding to the logical block. A storage manager, comprising: a processor, a memory, a bus, and a communication interface; The memory is for storing computer execution instructions, the processor is coupled to the memory via the bus, and when the computing device is running, the processor executes the computer-executed instructions stored by the memory to enable The storage manager performs the following methods: Receiving a data write instruction, the data write instruction carrying logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager, and the data write request is Entering a data page to determine a logical block, and recording the logical address of the data page to be written to the logical block and transmitting the logical address; Acquiring logical block information according to the logical space information of the data page to be written in the data write instruction, determining a physical block corresponding to the logical block according to the logical block information, and writing the data page to be written The logical block corresponds to a physical block. A computer readable medium, comprising computer executed instructions, wherein when a processor of a computer executes the computer to execute an instruction, the computer performs the following method: Receiving a data write request to determine a logical block for the page to be written; Logging the logical address of the page to be written into the logical block; Sending a data write instruction to the memory, wherein the data write instruction carries logical space information of the page to be written and the page to be written; the data write instruction is used to indicate that the memory is The data write instruction writes a page to be written corresponding to the logical block into a physical block corresponding to the logical block. A computer readable medium, comprising computer executed instructions, wherein when a processor of a computer executes the computer to execute an instruction, the computer performs the following method: Receiving a data write instruction, the data write instruction carrying logical space information of the data page to be written and the data page to be written, where the data write instruction is received by the manager, and the data write request is Entering a data page to determine a logical block, and recording the logical address of the data page to be written to the logical block and transmitting the logical address; Acquiring logical block information according to the logical space information of the data page to be written in the data write instruction, determining a physical block corresponding to the logical block according to the logical block information, and writing the data page to be written The logical block corresponds to a physical block.

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