CN110737405A - Method and device for realizing word data storage based on solid state disk - Google Patents
Method and device for realizing word data storage based on solid state disk Download PDFInfo
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- CN110737405A CN110737405A CN201910971316.8A CN201910971316A CN110737405A CN 110737405 A CN110737405 A CN 110737405A CN 201910971316 A CN201910971316 A CN 201910971316A CN 110737405 A CN110737405 A CN 110737405A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0608—Saving storage space on storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/064—Management of blocks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
Abstract
The application relates to solid state disk-based word data storage implementation method, device, computer equipment and storage media, wherein the method comprises the steps of obtaining a solid state disk-based word data storage implementation request, writing word data into a corresponding SLC block when QLC block word data are written according to the request, reading data corresponding to word from the SLC block when secondary programming is needed, and performing secondary programming on word by using the read data.
Description
Technical Field
The invention relates to the technical field of solid state disks, in particular to solid state disk-based method and device for realizing data storage of word line, computer equipment and storage media.
Background
At present, in NAND FLASH, the smallest data program unit is a word (which may also be named as page), in the QLC flashes , word need to pass through two program before reading the data of the word, there is an interval between two program, and the program cannot be continuously programmed twice, because the data of two program requires samples, in order to solve the problem, it is usually necessary to use a module of word caches to cache the data of the word that has been programmed times.
At present, the word cache is usually stored in dram in the implementation process, however, as the capacity of the SSD is larger and larger, the word cache occupies more and more dram space, and in some cases, the dram space may be insufficient.
Disclosure of Invention
Based on this, it is necessary to provide methods, apparatuses, computer devices, and storage media for implementing solid state disk-based word line data storage that reduce the need for dram space, in order to solve the above technical problems.
method for realizing word line data storage based on solid state disk, the method includes:
acquiring a solid state disk-based word data storage implementation request;
when the QLC block word data is written according to the request, writing the word data into a corresponding SLC block;
reading data corresponding to the word from the SLC block when the secondary program is needed;
and performing secondary program on the word by using the read data.
In embodiments, the step of reading data corresponding to word from the SLC block when a secondary program is required further includes:
when the host reads the data of which program is only processed for times, the host also needs to read the data corresponding to the word from the SLC block.
In embodiments, the method further comprises:
when the QLC block is used, distributing a plurality of corresponding SLC blocks and recording the blocks into a QLC-2 _ SLC mapping table;
and mapping between the word data in the QLC block and the word data in the SLC block.
In embodiments, the method further comprises:
in the QLC _2_ SLC mapping table, n SLC blocks are recorded in each columns for representing n WLC SLC blocks corresponding to the QLCblock, and each rows corresponds to QLC block numbers;
and when the query is carried out, acquiring corresponding n SLC blocks through the QLC block numbers.
kinds of solid state disk-based word data storage implementation device, the device includes:
the acquisition module is used for acquiring a solid state disk-based word data storage implementation request;
the writing module is used for writing the word data into the corresponding SLC block when the QLC block word data is written according to the request;
the reading module is used for reading data corresponding to the word from the SLC block when a secondary program is required;
and the secondary writing module is used for performing secondary program on the word by using the read data.
In embodiments, the read module is further to:
when the host reads the data of which program is only processed for times, the host also needs to read the data corresponding to the word from the SLC block.
In of these embodiments, the apparatus further comprises:
the distribution module is used for distributing a plurality of corresponding SLCblocks when the QLC block is used and recording the SLCblocks into a QLC-2-SLC mapping table;
and mapping between the word data in the QLC block and the word data in the SLC block.
In of these embodiments, the apparatus further comprises:
a mapping table module, configured to record, in the QLC _2_ SLC mapping table, n SLC blocks in each columns for representing n WLC SLC blocks corresponding to the QLC block, where each row corresponds to QLC block numbers;
and when the query is carried out, acquiring corresponding n SLC blocks through the QLC block numbers.
computer apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the computer program performing the steps of any of the methods of above.
computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of any of the methods of above.
According to the method, the device, the computer equipment and the storage medium for realizing the word data storage based on the solid state disk, the request for realizing the word data storage based on the solid state disk is obtained, the word data are written into the corresponding SLCblock when the QLC block word data are written according to the request, the data corresponding to the word are read from the SLC block when the secondary program is needed, and the read data are utilized to carry out the secondary program on the word.
Drawings
Fig. 1 is a flow diagram illustrating a method for implementing solid state disk-based word line data storage in embodiments;
fig. 2 is a schematic flow diagram of a solid state disk-based method for implementing work data storage in another embodiments;
fig. 3 is a schematic flowchart of a method for implementing solid state disk-based word line data storage in embodiments;
FIG. 4 is a schematic diagram of an implementation manner of storing a word cache into a dram by a QLC block;
FIG. 5 is a schematic diagram of an implementation manner in which a QLC block stores a word cache into a NAND;
FIG. 6 is a diagram showing mapping relationships between WLC block and QLC block in embodiments;
fig. 7 is a structural block diagram of an example apparatus for implementing solid state disk-based word data storage;
fig. 8 is a block diagram of another embodiments of a solid state disk-based word data storage implementation apparatus;
fig. 9 is a block diagram of a structure of a solid state disk-based word data storage implementation apparatus in embodiments;
fig. 10 is an internal structural view of a computer device in embodiments.
Detailed Description
For purposes of making the present application more readily apparent, the technical solutions and advantages thereof, reference is now made to the following detailed description taken in conjunction with the accompanying drawings and examples, it being understood that the specific examples described herein are for purposes of illustration only and are not intended to limit the application.
At present, the word cache is usually stored in dram in the implementation of the word cache, and as the capacity of the SSD is larger and larger, the word cache occupies more and more dram space, and the situation that the dram space is insufficient may occur in some cases.
Therefore, the invention provides methods for realizing the word line data storage based on the solid state disk, and the technical problems are expected to be solved.
In embodiments, as shown in fig. 1, methods for implementing solid state disk-based word line data storage are provided, where the methods include:
102, acquiring a solid state disk-based word data storage implementation request;
step 104, writing the QLC block word data into the corresponding SLC block according to the request;
and 108, performing secondary program on the word by using the read data.
Specifically, referring to an implementation manner that a QLC block stores a word cache into a DRAM as described in fig. 4, taking the QLC block in the figure as an example, an SSD firmware algorithm temporarily stores written data into a WLC of a DRAM during a program process; when the program 0 is to the program 7 in sequence, the second program of the program 0 needs to be executed, the SSD firmware automatically obtains the data buffer of the program 0 from the dram, and uses the buffer to perform the second program on the program 0, and releases the data buffer corresponding to the program 0 in the WLC after the program is completed.
Referring to fig. 5 for describing an implementation manner of a word in NAND, similar to the implementation manner of the word in dram, when QLC block word data are written, the data are written into an SLC block at the same time, when 2nd program is required, the data of the word are read from the SLC block, and the read data are used to perform the 2nd program on the word.
In the embodiment, a request is realized by obtaining word data storage based on a solid state disk, according to the request, when QLC block word data is written, word data is written into a corresponding SLCblock, when secondary program is needed, data corresponding to the word is read from the SLC block, the read data is used for carrying out secondary program on the word, the characteristic that the QLC block can be converted into the SLC block is utilized, the data characteristic can be read only through program in the SLC block, the data stored in the word cache can be stored into the SLCblock, and the requirement for a dram space is reduced.
In embodiments, as shown in fig. 2, methods for implementing solid state disk-based word line data storage are provided, where the methods include:
step 202, acquiring a solid state disk-based word data storage implementation request;
step 204, writing the QLC block word data into the corresponding SLC block according to the request;
step 206, reading data corresponding to the word from the SLC block when the secondary program is needed;
step 208, when the host reads the data of which the program is only processed for times, reading the data corresponding to the word from the SLCblock;
and step 210, performing secondary program on the word by using the read data.
In embodiments, as shown in fig. 3, methods for implementing solid state disk-based word line data storage are provided, where the methods further include:
step 302, when the QLC block is used, allocating a plurality of corresponding SLC blocks and recording the blocks into a QLC _2_ SLC mapping table, wherein the word data in the QLC block and the word data in the SLC block are mapped in a manner;
step 304, in the QLC _2_ SLC mapping table, n SLC blocks are recorded in each columns for representing n WLC SLC blocks corresponding to the QLC blocks, and each row corresponds to QLC block numbers;
and step 306, acquiring corresponding n SLC blocks through the QLC block numbers during query.
Specifically, with reference to fig. 6, a mapping relationship between a block used as a word cache and a QLC block is described, in a word cache in NAND mode, when a 2nd program is executed, data corresponding to the word needs to be obtained from an SLC block, and host reading may read data that only times of program is performed, and at this time, the data of the word needs to be obtained from a corresponding SLC block.
The specific mapping implementation mode is that in a QLC-2 _ SLC _ table array, every columns record 4 SLCblocks which represent 4 WLC SLC blocks corresponding to the QLC blocks, every rows correspond to QLC block numbers, during query, the corresponding 4 SLC blocks are obtained through the QLC block numbers, m% 4 is the number of the 4 SLC blocks corresponding to the word, and m/4 is the word number of the word in the SLC block.
In the embodiment, the QLC block can be converted into the SLC block, the characteristics that the word line in the SLC block can read the data only through program are utilized, the data stored by the word line cache is stored into the SLC block, the requirement on the dram space is reduced, the mapping relation between the QLC block and the corresponding WLC SLC block is established, and the data of the word line which is programmed for times can be quickly inquired.
It should be understood that although the various steps in the flow charts of fig. 1-6 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in the order indicated by the arrows, unless explicitly stated herein, the steps are not performed in a strict order of limitation, and the steps may be performed in other orders, and further, at least the portion of the step of in fig. 1-6 may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time , but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily performed in sequence, but may be rotated or alternated with at least portions of other steps or sub-steps of other steps.
In embodiments, as shown in fig. 7, solid state disk-based word line data storage implementation apparatuses 700 are provided, and the apparatuses include:
an obtaining module 701, configured to obtain a solid state disk-based word data storage implementation request;
a write-in module 702, configured to write the QLC block data into a corresponding SLC block at the same time when the QLC block data is written in according to the request;
a reading module 703, configured to read data corresponding to the word from the SLC block when a secondary program needs to be performed;
and a secondary writing module 704, configured to perform secondary program on the word by using the read data.
In embodiments, the reading module 703 is further configured to:
when the host reads the data of which program is performed for times, the host also needs to read the data corresponding to word from the SLC block.
In embodiments, as shown in fig. 8, solid state disk-based word line data storage implementation apparatuses 700 are provided, and the apparatuses further include:
the allocating module 705 is configured to, when the QLC block is used, allocate a plurality of corresponding SLC blocks and record the blocks into the QLC _2_ SLC mapping table;
and mapping mode is adopted by the word data in the QLC block and the word data in the SLC block.
In embodiments, as shown in fig. 9, types of solid state disk-based word line data storage implementation apparatuses 700 are provided, and the apparatuses further include:
a mapping table module 706, configured to record, in the QLC _2_ SLC mapping table, n SLC blocks in each column for representing n WLC SLC blocks corresponding to the QLC block, and QLC block numbers in each row;
and when the query is carried out, acquiring corresponding n SLC blocks through the QLC block numbers.
For specific limitations of the solid state disk-based word data storage implementation apparatus, reference may be made to the above limitations of the solid state disk-based word data storage implementation method, which are not described herein again.
In embodiments, computer devices are provided, the internal structure of which can be as shown in FIG. 10, wherein the computer devices comprise processors, memories and network interfaces connected through a device bus, the processors of the computer devices are used for providing computing and control capabilities, the memories of the computer devices comprise nonvolatile storage media and internal memories, the nonvolatile storage media store operating devices, computer programs and databases, the internal memories provide an environment for the operating devices and the computer programs in the nonvolatile storage media to run, the network interfaces of the computer devices are used for communicating with external terminals through the network connection, and the computer programs are executed by the processors to realize solid state disk-based word data storage implementation methods.
Those skilled in the art will appreciate that the architecture shown in fig. 10 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In embodiments, computer devices are provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method embodiments when executing the computer program.
In embodiments, computer readable storage media are provided, on which a computer program is stored, which when executed by a processor implements the steps in the above respective method embodiments.
It will be understood by those of ordinary skill in the art that all or a portion of the processes of the methods of the embodiments described above may be implemented by a computer program that may be stored in a non-volatile computer-readable storage medium, which when executed, may include the processes of the embodiments of the methods described above, wherein any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1, kinds of solid state disk-based word data storage implementation method, which is characterized in that the method comprises:
acquiring a solid state disk-based word data storage implementation request;
when the QLC block word data is written according to the request, writing the word data into a corresponding SLC block;
reading data corresponding to the word from the SLC block when the secondary program is needed;
and performing secondary program on the word by using the read data.
2. The method for realizing data storage of the word line based on the solid state disk as claimed in claim 1, wherein the step of reading the data of the corresponding word line from the SLC block when the secondary program is required further comprises:
when the host reads the data of which program is only processed for times, the host also needs to read the data corresponding to the word from the SLC block.
3. The method for realizing data storage of the word line based on the solid state disk as claimed in claim 1 or 2, wherein the method further comprises:
when the QLC block is used, distributing a plurality of corresponding SLC blocks and recording the blocks into a QLC-2 _ SLC mapping table;
and mapping between the word data in the QLC block and the word data in the SLC block.
4. The method for realizing data storage of the word line based on the solid state disk as claimed in claim 3, wherein the method further comprises:
in the QLC _2_ SLC mapping table, n SLC blocks are recorded in each columns for representing n WLC SLC blocks corresponding to the QLC blocks, and each rows corresponds to QLC block numbers;
and when the query is carried out, acquiring corresponding n SLC blocks through the QLC block numbers.
5, kind of solid state disk based word data storage realizes device, its characterized in that, the device includes:
the acquisition module is used for acquiring a solid state disk-based word data storage implementation request;
the writing module is used for writing the word data into the corresponding SLC block when the QLC block word data is written according to the request;
the reading module is used for reading data corresponding to the word from the SLC block when a secondary program is required;
and the secondary writing module is used for performing secondary program on the word by using the read data.
6. The solid state disk-based word line data storage implementation device of claim 5, wherein the reading module is further configured to:
when the host reads the data of which program is only processed for times, the host also needs to read the data corresponding to the word from the SLC block.
7. The apparatus for implementing solid state disk-based word line data storage according to claim 5 or 6, wherein the apparatus further comprises:
the distribution module is used for distributing a plurality of corresponding SLC blocks when the QLC block is used and recording the SLC blocks into a QLC-2-SLC mapping table;
and mapping between the word data in the QLC block and the word data in the SLC block.
8. The apparatus for implementing solid state disk-based word line data storage according to claim 7, wherein the apparatus further comprises:
the mapping table module is used for recording n SLCblocks in each columns in the QLC-2 _ SLC mapping table, wherein the n SLCblocks are used for representing n WLC SLC blocks corresponding to the QLC blocks, and each rows correspond to QLC block numbers;
and when the query is carried out, acquiring corresponding n SLC blocks through the QLC block numbers.
Computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of claims 1 to 4 when executing the computer program.
10, computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any of claims 1 to 4, wherein is defined.
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| WO2024031734A1 (en) * | 2022-08-08 | 2024-02-15 | 中山市江波龙电子有限公司 | Data writing method, storage device, and computer readable storage device |
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