CN110287129B - L2P table updating and writing management method and device based on solid state disk - Google Patents
L2P table updating and writing management method and device based on solid state disk Download PDFInfo
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/72—Details relating to flash memory management
- G06F2212/7201—Logical to physical mapping or translation of blocks or pages
Abstract
The application relates to a solid state disk-based L2P table updating and writing management method, a device, computer equipment and a storage medium, wherein the method comprises the following steps: acquiring L2P table updating and writing management requests based on the solid state disk; distributing two management structure bodies to the corresponding L2P table for management according to the management request; locking the first management structure body in the writing process, and starting the flow of writing the NAND; meanwhile, the marked L2P table is managed through the second management structure body, so that the time for writing the NAND in the L2P table does not need to block other control nodes processed by the FTL to improve the efficiency of the SSD. The invention provides a management method for updating and writing a table of a solid-state storage device L2p, which is used for improving the SSD efficiency without blocking an FTL (fiber to the Home) to process other control nodes in the writing time of the table L2P.
Description
Technical Field
The invention relates to the technical field of solid state disks, in particular to a solid state disk-based L2P table updating and writing management method, a solid state disk-based L2P table updating and writing management device, computer equipment and a storage medium.
Background
Currently, SSD (Solid State Disk) has been widely used in various occasions, and is gradually replacing the conventional hard Disk due to its excellent indexes in performance, power consumption, environmental adaptability, and the like. The FTL (flash Translation layer) algorithm is a core part of ssd (solid State disk) firmware, and since NAND does not allow repeated writes on pages, FTL needs to maintain logical to physical address mapping.
In the conventional technology, the SSD firmware mostly adopts a page mapping manner, an address mapping table, i.e. L2P table, is loaded or modified in the DDR, and then the FTL manages the modified L2P tables, and at some time triggers a task of writing an L2P table to write the dirty tables into the NAND. Generally, in the processing mechanism, during the time when the mapping table is written into the NAND, the FTL needs to stop processing the operation node which may change the address mapping table, and this may affect the efficiency of the SSD.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a solid state disk-based L2P table updating and writing management method, apparatus, computer device and storage medium that can improve SSD efficiency.
A solid state disk-based L2P table updating and writing management method comprises the following steps:
acquiring L2P table updating and writing management requests based on the solid state disk;
distributing two management structure bodies to the corresponding L2P table for management according to the management request;
locking the first management structure body in the writing process, and starting the flow of writing the NAND;
meanwhile, the marked L2P table is managed through the second management structure body, so that the time for writing the NAND in the L2P table does not need to block other control nodes processed by the FTL to improve the efficiency of the SSD.
In one embodiment, the method further comprises:
acquiring an L2P table updating request based on the solid state disk;
modifying a corresponding L2P table in the DDR according to the updating request, wherein the L2P table is divided into a plurality of mps according to a certain granularity, and mapping tables corresponding to the mps are stored in a NAND;
calculating mp where the modified position is located according to the granularity of the mp, and checking whether a position in bmp corresponding to the mp is already located;
if the position in the bmp corresponding to the mp is not positioned, updating the dirty _ cnt at the corresponding position;
and when the size of the dirty _ cnt is larger than a preset refresh threshold value, triggering an L2P write task.
In one embodiment, after the step of checking whether a bit in a bmp corresponding to the mp has been set, the method further includes:
and if the position in the bmp corresponding to the mp is already set, directly jumping out.
In one embodiment, the method further comprises:
acquiring an L2P table write request based on a solid state disk;
according to the write request, the flush _ mng points to an object of active _ mng, and the object pointed by active _ mng is exchanged into another mng;
the marked L2P table in the task is written to NAND and the M2P table is updated.
A solid state disk-based L2P table update and write management apparatus, the apparatus comprising:
the system comprises an acquisition module, a storage module and a management module, wherein the acquisition module is used for acquiring L2P table updating and writing management requests based on the solid state disk;
the distribution management module is used for distributing two management structure bodies to the corresponding L2P table according to the management request for management;
the first management module is used for locking the first management structure body in the writing process and starting the process of writing the NAND;
a second management module for managing the marked L2P table through a second management structure body at the same time, so that the FTL is not required to be blocked from processing other control nodes at the time of writing the NAND in the L2P table, thereby improving the efficiency of the SSD.
In one embodiment, the apparatus further comprises an L2P table update module, the L2P table update module to:
acquiring an L2P table updating request based on the solid state disk;
modifying a corresponding L2P table in the DDR according to the updating request, wherein the L2P table is divided into a plurality of mps according to a certain granularity, and mapping tables corresponding to the mps are stored in a NAND;
calculating mp where the modified position is located according to the granularity of the mp, and checking whether a position in bmp corresponding to the mp is already located;
if the position in the bmp corresponding to the mp is not positioned, updating the dirty _ cnt at the corresponding position;
and when the size of the dirty _ cnt is larger than a preset refresh threshold value, triggering an L2P write task.
In one embodiment, the L2P table update module is further configured to:
and if the position in the bmp corresponding to the mp is already set, directly jumping out.
In one embodiment, the apparatus further comprises an L2P table write module, the L2P table write module to:
acquiring an L2P table write request based on a solid state disk;
according to the write request, the flush _ mng points to an object of active _ mng, and the object pointed by active _ mng is exchanged into another mng;
the marked L2P table in the task is written to NAND and the M2P table is updated.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any of the above methods when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of any of the methods described above.
According to the solid state disk-based L2P table updating and writing management method, device, computer equipment and storage medium, the solid state disk-based L2P table updating and writing management request is obtained; and distributing double caches for the corresponding L2P table according to the management request for management. By the management method of the double caches, one Cache is locked in the writing process, the flow of writing in the NAND is started, and the other Cache is used for managing a new mapping table marked as 'dirty', so that the FTL is not required to be blocked to process other control nodes in the writing time of the address mapping table, and the efficiency of the SSD is improved.
Drawings
FIG. 1 is a diagram illustrating a logical page physical mapping table in the prior art;
FIG. 2 is a diagram illustrating a management structure during a mapping table writing process in the prior art;
FIG. 3 is a flowchart illustrating a method for solid state drive-based L2P table update and write management according to an embodiment;
FIG. 4 is a flowchart illustrating a solid state drive-based L2P table update and write management method according to another embodiment;
FIG. 5 is a flowchart illustrating a solid state drive-based L2P table update and write management method according to yet another embodiment;
FIG. 6 is a diagram illustrating a dual management structure during a mapping table write process in one embodiment;
FIG. 7 is a flowchart illustrating the steps of updating the L2P table in one embodiment;
FIG. 8 is a flowchart illustrating the L2P table write step in one embodiment;
FIG. 9 is a block diagram of an embodiment of a solid state disk based L2P table update and write management apparatus;
FIG. 10 is a block diagram of an apparatus for solid state disk based L2P table update and write management in another embodiment;
FIG. 11 is a block diagram of a solid state disk-based L2P table update and write management apparatus according to yet another embodiment;
FIG. 12 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the existing SSD system, an L2P table is usually updated in DDR, and then a write task is triggered to write NAND in the background; the following may be used.
As shown in fig. 1, the left L2P table is a logical page physical address mapping table, the table is indexed by a logical page address, the table is a physical address corresponding to a logical page, the table is stored in the DDR, the table is divided according to a certain granularity, in this example, the table is divided into 64 entries to form an mp, the mapping table corresponding to the mp is stored in the NAND, and the M2P table in fig. 1 is indexed by an mp number, and records an address stored in the NAND by the mapping table corresponding to the mp.
As shown in fig. 2, for the management structure written in the mapping table, dirty _ bmp [ ] is an array, each bit is set to represent that the content of the corresponding mp is modified (marked as "dirty", not written in the NAND), dirty _ cnt records the number of "dirty" mps, when greater than a certain threshold, a write-once task is triggered, the "dirty" mapping table in the DDR is written in the NAND, and then the structure is cleared; writing the L2P table of a certain mp needs to allocate a new page and copy the piece of data to a buffer to be made into a page with other 'dirty' L2P tables, if the piece of table is copied in the writing process and other tasks modify the piece of table, the data written into the NAND will be old data, and the 'dirty' mp will clear the corresponding bit after the writing is completed, so that the table is modified and the update is not the newest data; if new 'dirty' mp is marked continuously in the writing task, the current writing task state can not jump out; therefore, the common practice is to lock the L2P table when entering the mapping table writing task and forbid the task of modifying the table; this affects the efficiency of the SSD to some extent.
The invention provides an optimized SSD bad block management method based on the technical problems, and provides a management method for updating and writing a table of a solid-state storage device L2P, so that FTL processing of other control nodes is not required to be blocked in the table writing time of L2P, and the SSD efficiency is improved.
In one embodiment, as shown in fig. 3, a solid state disk based L2P table updating and write management method is provided, where the method includes:
step 302, acquiring an L2P table updating and writing management request based on the solid state disk;
step 304, distributing two management structures to the corresponding L2P table according to the management request for management;
step 306, locking the first management structure body in the writing process, and starting the flow of writing the NAND;
and 308, managing the marked L2P table through the second management structure body, so that the time for writing the NAND in the L2P table does not need to block other control nodes processed by the FTL to improve the efficiency of the SSD.
Specifically, referring to FIG. 6, there are two management structures mng [0] and mng [1] responsible for L2P table update and write, and two pointers active _ mng and flush _ mng point to one of the two management structures. The structure pointed by active _ mng is responsible for managing the mark of the modification of the L2P table in the firmware operation, and when dirty _ cnt is larger than a certain threshold value, the writing task of the L2P table is triggered. At the beginning of the L2P table write task, flush _ mng is pointed to the object of active _ mng, and the object of active _ mng is swapped for another mng. The writing of the L2P table managed by flush _ mng is processed in the current L2P writing task, the management structure body is cleared after the writing is completed, and meanwhile, the modification of the L2P table is marked in active _ mng in the writing process. Therefore, the FTL does not need to be blocked from processing other control nodes in the time of writing in the L2P table, and the SSD efficiency is improved.
In the embodiment, the management request is updated and written by acquiring the L2P table based on the solid state disk; and the management request allocates double caches for the corresponding L2P table for management. By the management method of the double caches, one Cache is locked in the writing process, the flow of writing in the NAND is started, and the other Cache is used for managing a new mapping table marked as 'dirty', so that the FTL is not required to be blocked to process other control nodes in the writing time of the address mapping table, and the efficiency of the SSD is improved.
In one embodiment, as shown in fig. 4, there is provided a solid state disk-based L2P table updating and writing management method, where the method further includes:
step 402, acquiring an L2P table updating request based on the solid state disk;
step 404, modifying a corresponding L2P table in the DDR according to the updating request, wherein the L2P table is divided into a plurality of mps according to a certain granularity, and mapping tables corresponding to the mps are stored in the NAND;
step 406, calculating mp where the modified position is located according to the granularity of the mp, and checking whether the position in the bmp corresponding to the mp is already set;
step 408, if the position in the bmp corresponding to the mp is not located, updating the dirty _ cnt at the corresponding position;
in step 410, when the size of dirty _ cnt is larger than the preset refresh threshold, the L2P write task is triggered.
In one embodiment, after the step of checking whether a bit in a bmp corresponding to the mp has been set, the method further comprises:
and if the position in the bmp corresponding to the mp is already set, directly jumping out.
Specifically, referring to fig. 7, the flow of updating the L2P table in the present embodiment includes:
the L2P table is updated firstly in DDR, then mp where the modified position is located is calculated according to the granularity of mp, whether bit position in bmp corresponding to mp in an active _ mng structure body is already set (representing dirty), if the bit position is already set, the bit position is jumped out, otherwise, the corresponding bit position is set, dirty _ cnt is updated, if the bit position is larger than the threshold value of the writing task of the L2P table, the task is triggered, and if the bit position is not set, the task is jumped out.
In this embodiment, it is not necessary to block the FTL from processing other control nodes in the time of writing in the L2P table, which improves the efficiency of SSD.
In one embodiment, as shown in fig. 5, a solid state disk based L2P table updating and writing management method is provided, where the method further includes:
step 502, acquiring an L2P table write request based on a solid state disk;
step 504, according to the write request, the flush _ mng points to the object of active _ mng, and the object pointed by active _ mng is exchanged to another mng;
step 506, write the marked L2P table in the task to NAND and update the M2P table.
Specifically, referring to fig. 8, the flow of the L2P table writing task in the present embodiment includes:
at the beginning of the L2P write task, first, flush _ mng points to the object of active _ mng, the object of active _ mng is exchanged to another mng, the L2P table marked as "dirty" managed by flush _ mng is written into NAND in the task, and the M2P table is updated.
It should be understood that although the various steps in the flow charts of fig. 3-8 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 3-8 may include multiple sub-steps or multiple stages that 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 sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 9, there is provided a solid state disk based L2P table updating and writing management apparatus 900, the apparatus comprising:
an obtaining module 901, configured to obtain a solid state disk-based L2P table update and write management request;
an allocation management module 902, configured to allocate two management structures to the corresponding L2P table according to the management request for management;
a first management module 903, configured to lock the first management structure in the writing process and start a process of writing a NAND;
and a second management module 904, configured to manage the marked L2P table through the second management structure at the same time, so that it is not necessary to block the FTL from processing other control nodes at the time of writing the NAND in the L2P table, so as to improve the efficiency of the SSD.
In one embodiment, as shown in fig. 10, there is provided a solid state disk based L2P table updating and writing management apparatus 900, the apparatus further comprising an L2P table updating module 905 configured to:
acquiring an L2P table updating request based on the solid state disk;
modifying a corresponding L2P table in the DDR according to the updating request, wherein the L2P table is divided into a plurality of mps according to a certain granularity, and mapping tables corresponding to the mps are stored in the NAND;
calculating mp where the modified position is located according to the granularity of the mp, and checking whether a position in bmp corresponding to the mp is already set;
if the position in the bmp corresponding to the mp is not positioned, updating the dirty _ cnt at the corresponding position;
when the size of dirty _ cnt is larger than the preset refresh threshold, the L2P write task is triggered.
In one embodiment, the L2P table update module 905 is further configured to:
and if the position in the bmp corresponding to the mp is already set, directly jumping out.
In one embodiment, as shown in fig. 11, there is provided a solid state disk based L2P table updating and writing management apparatus 900, the apparatus further comprising an L2P table writing module 906 configured to:
acquiring an L2P table write request based on a solid state disk;
according to the write request, pointing the flush _ mng to an object of active _ mng, and exchanging the object pointed by active _ mng into another mng;
the marked L2P table in the task is written to NAND and the M2P table is updated.
For specific limitations of the solid state disk-based L2P table updating and writing management apparatus, reference may be made to the above limitations of the solid state disk-based L2P table updating and writing management method, which are not described herein again.
In one embodiment, a computer device is provided, the internal structure of which may be as shown in FIG. 12. The computer apparatus includes a processor, a memory, and a network interface connected by a device bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The nonvolatile storage medium stores an operating device, a computer program, and a database. The internal memory provides an environment for the operation device in the nonvolatile storage medium and the execution of the computer program. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to realize a solid state disk-based L2P table updating and writing management method.
Those skilled in the art will appreciate that the architecture shown in fig. 12 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 one embodiment, a computer device is provided, comprising 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 one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above respective method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
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 (4)
1. A solid state disk-based L2P table updating and writing management method comprises the following steps:
acquiring L2P table updating and writing management requests based on the solid state disk;
distributing two management structure bodies to the corresponding L2P table for management according to the management request;
locking the first management structure body in the writing process, and starting the flow of writing the NAND;
meanwhile, the marked L2P table is managed through the second management structure body, so that the time for writing the NAND into the L2P table does not need to block the FTL to process other control nodes, and the efficiency of the SSD is improved;
the method further comprises the following steps: acquiring an L2P table updating request based on the solid state disk;
modifying a corresponding L2P table in the DDR according to the updating request, wherein the L2P table is divided into a plurality of mps according to a certain granularity, and mapping tables corresponding to the mps are stored in a NAND;
calculating mp where the modified position is located according to the granularity of the mp, and checking whether a position in bmp corresponding to the mp is already located; if the position in the bmp corresponding to the mp is not positioned, updating the dirty _ cnt at the corresponding position; bmp is an array, each bit position is set to represent that the content of the corresponding mp is modified, and dirty _ cnt is used for recording the number of the modified mps;
when the size of the dirty _ cnt is larger than a preset refresh threshold value, triggering an L2P write task;
acquiring an L2P table write request based on a solid state disk;
according to the write request, enabling the flush _ mng to point to an object of the active _ mng, and exchanging the object of the active _ mng to another management structure body; wherein, the two pointers active _ mng and flush _ mng point to the two management structures respectively; the management structure pointed by active _ mng is responsible for managing the label of the modification of the L2P table in the running process of the firmware; the writing of the L2P table managed by flush _ mng is processed in the writing process of L2P, the management structure body is cleared after the writing is completed, and meanwhile, the modification of the L2P table is marked in active _ mng in the writing process;
writing the marked L2P table in the task into the NAND, and updating the M2P table, wherein the M2P table is indexed by mp numbers, and records the addresses of mapping tables corresponding to the mp stored in the NAND.
2. The method for table update and write management of solid state disk-based L2P, according to claim 1, further comprising, after the step of checking whether a bit in a bmp corresponding to the mp has been set:
and if the position in the bmp corresponding to the mp is already set, directly jumping out.
3. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of claim 1 or 2 are implemented when the processor executes the computer program.
4. A 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 claim 1 or 2.
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| CN114201331B (en) * | 2022-02-17 | 2022-05-31 | 深圳佰维存储科技股份有限公司 | Method, device and equipment for detecting instruction conflict of solid state disk and storage medium |
| CN117149091A (en) * | 2023-10-23 | 2023-12-01 | 四川云海芯科微电子科技有限公司 | Solid state disk data storage method and related device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382918A (en) * | 2008-07-26 | 2009-03-11 | 深圳市硅格半导体有限公司 | NAND flash memory optimizing and managing method based on data interchange zone |
| CN102043727A (en) * | 2009-10-10 | 2011-05-04 | 成都市华为赛门铁克科技有限公司 | Method and device for recovering solid-state hard disc mapping table |
| CN102662849A (en) * | 2012-03-07 | 2012-09-12 | 忆正科技（武汉）有限公司 | Method for managing blocks of multichannel flash memory |
| CN103425600A (en) * | 2013-08-23 | 2013-12-04 | 中国人民解放军国防科学技术大学 | Address mapping method for flash translation layer of solid state drive |
| US8645664B1 (en) * | 2011-08-11 | 2014-02-04 | Pure Storage, Inc. | Logical sector mapping in a flash storage array |
| CN103999038A (en) * | 2011-12-28 | 2014-08-20 | 英特尔公司 | A method and device to distribute code and data stores between volatile memory and non-volatile memory |
| CN107943719A (en) * | 2017-11-28 | 2018-04-20 | 杭州电子科技大学 | A kind of flash translation layer (FTL) control method based on requests classification |
| CN109918316A (en) * | 2019-02-26 | 2019-06-21 | 深圳忆联信息系统有限公司 | A kind of method and its system reducing FTL address of cache space |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008191808A (en) * | 2007-02-02 | 2008-08-21 | Hitachi Ltd | Storage system |
| US7809891B2 (en) * | 2007-04-09 | 2010-10-05 | Sap Ag | Wait-free parallel data cache |
| US20150378886A1 (en) * | 2013-04-08 | 2015-12-31 | Avalanche Technology, Inc. | Software-defined ssd and system using the same |
| CN109783411B (en) * | 2018-12-20 | 2022-05-17 | 成都旋极历通信息技术有限公司 | FLASH array control method based on FPGA and controller |
-
2019
- 2019-06-27 CN CN201910568298.9A patent/CN110287129B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382918A (en) * | 2008-07-26 | 2009-03-11 | 深圳市硅格半导体有限公司 | NAND flash memory optimizing and managing method based on data interchange zone |
| CN102043727A (en) * | 2009-10-10 | 2011-05-04 | 成都市华为赛门铁克科技有限公司 | Method and device for recovering solid-state hard disc mapping table |
| US8645664B1 (en) * | 2011-08-11 | 2014-02-04 | Pure Storage, Inc. | Logical sector mapping in a flash storage array |
| CN103999038A (en) * | 2011-12-28 | 2014-08-20 | 英特尔公司 | A method and device to distribute code and data stores between volatile memory and non-volatile memory |
| CN102662849A (en) * | 2012-03-07 | 2012-09-12 | 忆正科技（武汉）有限公司 | Method for managing blocks of multichannel flash memory |
| CN103425600A (en) * | 2013-08-23 | 2013-12-04 | 中国人民解放军国防科学技术大学 | Address mapping method for flash translation layer of solid state drive |
| CN107943719A (en) * | 2017-11-28 | 2018-04-20 | 杭州电子科技大学 | A kind of flash translation layer (FTL) control method based on requests classification |
| CN109918316A (en) * | 2019-02-26 | 2019-06-21 | 深圳忆联信息系统有限公司 | A kind of method and its system reducing FTL address of cache space |
Non-Patent Citations (1)
| Title |
|---|
| Flash存储器混合型地址映射算法研究;高源;《中国优秀硕士学位论文全文数据库·信息科技辑》;20150215;全文 * |
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