CN109032522B - Data reading method of solid state disk and solid state disk - Google Patents

Data reading method of solid state disk and solid state disk Download PDF

Info

Publication number
CN109032522B
CN109032522B CN201810831053.6A CN201810831053A CN109032522B CN 109032522 B CN109032522 B CN 109032522B CN 201810831053 A CN201810831053 A CN 201810831053A CN 109032522 B CN109032522 B CN 109032522B
Authority
CN
China
Prior art keywords
solid state
state disk
write requests
read lock
ddr sdram
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810831053.6A
Other languages
Chinese (zh)
Other versions
CN109032522A (en
Inventor
汪之伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inspur Electronic Information Industry Co Ltd
Original Assignee
Inspur Electronic Information Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inspur Electronic Information Industry Co Ltd filed Critical Inspur Electronic Information Industry Co Ltd
Priority to CN201810831053.6A priority Critical patent/CN109032522B/en
Publication of CN109032522A publication Critical patent/CN109032522A/en
Application granted granted Critical
Publication of CN109032522B publication Critical patent/CN109032522B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G06F3/061—Improving I/O performance
    • G06F3/0611—Improving I/O performance in relation to response time
    • 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
    • G06F3/0674—Disk device
    • G06F3/0676—Magnetic disk device

Abstract

The embodiment of the application discloses a data reading method of a solid state disk and the solid state disk, which are used for reading data in a mode without a reading lock when the solid state disk has no unfinished writing request, and the reading performance of the solid state disk is improved. The method in the embodiment of the application comprises the following steps: recording the number of first write requests by a first counter for a solid state disk, wherein the number of the first write requests is the number of the write requests sent by a host and received by the solid state disk; the solid state disk records the number of second write requests by using a second counter, wherein the number of the second write requests is the number of the write requests for completing write operation of the solid state disk; the solid state disk receives a reading request sent by the host; the solid state disk judges whether the number of the first write requests is equal to the number of the second write requests; if so, the solid state disk reads the logical-to-physical address translation L2P table in the DDR SDRAM in a manner without a read lock.

Description

Data reading method of solid state disk and solid state disk
Technical Field
The present disclosure relates to the field of computer technologies, and in particular, to a data reading method for a solid state disk and the solid state disk.
Background
With the development of technologies such as internet, cloud computing, internet of things and the like, the solid state disk is widely applied to the public as a new generation of storage device. Read performance is a very important indicator of a Solid State Disk (SSD).
At present, a method for reading data from a solid state disk is that, after receiving a read request sent by a host, the solid state disk applies for a read lock to a double data rate synchronous dynamic random access memory (DDR SDRAM), after obtaining the read lock authorized by the DDR SDRAM, the solid state disk starts to read an L2P table from the DDR SDRAM, and finally, the solid state disk releases the read lock in the DDR SDRAM.
However, after the solid state disk reads the L2P table from the DDR SDRAM each time, the solid state disk needs to access the DDR SDRAM again to release the read lock from the DDR SDRAM, and each access to the DDR SDRAM needs to consume 500 nanoseconds (ns), so that a delay of 500ns occurs for each data input and output operation of the solid state disk, and the read performance is reduced.
Disclosure of Invention
The embodiment of the application provides a data reading method of a solid state disk and the solid state disk, which can read data without a read lock when the solid state disk has no unfinished write request, and improve the reading performance of the solid state disk.
The embodiment of the application provides a data reading method for a solid state disk, which comprises the following steps:
recording the number of first write requests by a first counter for a solid state disk, wherein the number of the first write requests is the number of the write requests sent by a host and received by the solid state disk;
the solid state disk records the number of second write requests by using a second counter, wherein the number of the second write requests is the number of the write requests for completing write operation of the solid state disk;
the solid state disk receives a reading request sent by the host;
the solid state disk judges whether the number of the first write requests is equal to the number of the second write requests;
if so, the solid state disk reads the logical-to-physical address translation L2P table in the DDR SDRAM in a manner without a read lock.
Optionally, after the solid state disk determines whether the number of the first write requests is equal to the number of the second write requests, the method further includes:
if not, the solid state disk reads the L2P table by using a mode with a read lock.
Optionally, the reading, by the solid state disk, the L2P table by using a tape read lock includes:
the solid state disk applies for a read lock from the DDR SDRAM;
the solid state disk acquires the read lock authorized by the DDR SDRAM;
the solid state disk reads the L2P table by using a mode with a read lock.
Optionally, after the solid state disk reads the L2P table by using a tape read lock, the method further includes:
and the solid state disk releases the read lock in the DDR SDRAM.
The embodiment of the application provides a solid state disk, which is characterized by comprising:
the first recording unit is used for recording the number of first write requests by using a first counter, wherein the number of the first write requests is the number of the write requests sent by the host and received by the solid state disk;
the second recording unit is used for recording the number of second write requests by using a second counter, wherein the number of the second write requests is the number of the write requests of the solid state disk for completing write operation;
a receiving unit, configured to receive a read request sent by the host;
the judging unit is used for judging whether the number of the first write requests is equal to that of the second write requests;
and a first reading unit for reading the logical-to-physical address translation L2P table in the DDR SDRAM in a manner without read lock when it is determined that the first number of write requests is equal to the second number of write requests.
Optionally, the solid state disk further includes:
and the second reading unit is used for reading the L2P table by using a mode with a read lock when the number of the first write requests is determined not to be equal to the number of the second write requests.
Optionally, the second reading unit specifically applies for a read lock from the DDR SDRAM; acquiring the read lock authorized by the DDR SDRAM; the L2P table is read using a tape read lock.
Optionally, the solid state disk further includes:
and the release unit is used for releasing the read lock in the DDR SDRAM.
The embodiment of the application provides a solid state disk which has a function of realizing the solid state disk behavior in the data reading method of the solid state disk. The functions may be implemented by hardware or by executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.
The embodiment of the application provides a computer storage medium, which is used for storing computer software instructions for the solid state disk, and comprises a program for executing the program designed for the solid state disk.
The embodiment of the present application provides a computer program product, which includes computer software instructions, where the computer software instructions can be loaded by a processor to implement the flow of the data reading method.
According to the technical scheme, the embodiment of the application has the following advantages: the solid state disk can record the number of first write requests which are received by the solid state disk and sent by a host, and record the number of second write requests which are received by the solid state disk and sent by the host, and then receive read requests sent by the host, when the number of the first write requests is determined to be equal to the number of the second write requests, the solid state disk reads the L2P table in the DDR SDRAM in a mode without a read lock, so that the solid state disk reads the L2P table in a mode without a read lock without an unfinished write request, and after the L2P table is read, the SDRAM does not need to be accessed again to release the read lock, the number of times of accessing the DDR SDRAM by the solid state disk can be reduced, the time for accessing the DDR SDRAM is saved, and the delay of data input and output of the solid state disk is reduced, therefore, the reading performance of the solid state disk is improved.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a data reading method for a solid state disk in an embodiment of the present application;
fig. 2 is a schematic diagram of another embodiment of a data reading method for a solid state disk in an embodiment of the present application;
FIG. 3 is a schematic diagram of an embodiment of a solid state disk in the embodiment of the present application;
fig. 4 is a schematic diagram of another embodiment of a solid state disk in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a data reading method of a solid state disk and the solid state disk, which are used for reading data in a mode without a read lock when the solid state disk has no unfinished write request, and the reading performance of the solid state disk is improved.
Referring to fig. 1, fig. 1 is a diagram illustrating an embodiment of a data reading method of a solid state disk according to the present disclosure.
An embodiment of a data reading method of a solid state disk in the embodiment of the present application includes:
101. the solid state disk records the number of first write requests by using a first counter;
in this embodiment, a first counter is preset in the solid state disk itself, and when the host sends a write request to the solid state disk, the solid state disk can record the number of write requests sent by the host through the first counter, where the number of first write requests is the number of write requests sent by the host and received by the solid state disk. That is, the solid state disk records the first number of write requests by using the first counter.
102. The solid state disk records the number of second write requests by using a second counter;
in this embodiment, a second counter is further preset in the solid state disk, where the second counter is used to record the number of second write requests, and the number of the second write requests is the number of write requests for completing write operations of the solid state disk.
It should be noted that, the steps 101 and 102 are not executed in a sequential order, and the step 101 may be executed first, and then the step 102 is executed, or the step 102 may be executed first, and then the step 101 is executed, which is not limited herein.
103. The method comprises the steps that a solid state disk receives a reading request sent by a host;
during operation, the solid state disk may receive a read request sent by a host, where the read request is used for the solid state disk to read data in the DDR SDRAM, where the read request includes an L2P table.
It should be noted that, the step 103 and the steps 101 and 102 are not executed in sequence, and the steps 101 and 102 may be executed first, and then the step 103 is executed, or the step 101 may be executed first, and then the steps 102 and 103 are executed, or the step 102 may be executed first, and then the steps 101 and 103 are executed, which is not limited herein.
104. The solid state disk judges whether the number of the first write requests is equal to the number of the second write requests;
in this embodiment, after receiving the read request sent by the host, the solid state disk may determine whether the number of the first write requests is equal to the number of the second write requests, that is, the solid state disk needs to determine whether the number of the write requests from the host received by the solid state disk is equal to the number of the write requests for completing the write operation by the solid state disk, and if so, step 105 is executed.
105. The solid state disk reads an L2P table in DDR SDRAM in a mode without a read lock;
in this embodiment, if the solid state disk determines that the number of the first write requests is equal to the number of the second write requests, it indicates that there are no outstanding write requests in the solid state disk, which means that there is no new write operation to update the L2P table in the DDR SDRAM, so even if the solid state disk reads the L2P table without a read lock at this time, an error in reading old data, which refers to the L2P table updated in the previous write operation, does not occur. Therefore, in the case that the solid state disk determines the number of received write requests sent by the host and the number of write requests for completing write operations by the solid state disk, the solid state disk can read the L2P table in the DDR SDRAM without a read lock.
If the solid state disk reads the L2P table in the DDR SDRAM in a locked manner, then the solid state disk needs to access the DDR SDRAM again, thereby releasing the read lock in the DDR SDRAM. Because the solid state disk reads the L2P table in the DDR SDRAM in a lock-free mode, the DDR SDRAM does not need to be accessed again to release the read lock after the L2P table is read, the times of accessing the DDR SDRAM are reduced, and the time of accessing the DDR SDRAM is shortened.
In the embodiment of the application, when the solid state disk determines that the number of the write requests sent by the host and received by the solid state disk is equal to the number of the write requests of the solid state disk for completing the write operation, that is, when the solid state disk determines that there are no unfinished write requests, the solid state disk can read the L2P table in the DDR SDRAM in a manner without a read lock, so that it is not necessary to access the DDR SDRAM again to release the read lock after reading the L2P table, and thus the number of times of accessing the DDR SDRAM by the solid state disk can be reduced, the time for accessing the DDR SDRAM is saved, the delay of data input and output of the solid state disk is reduced, and the read performance of the solid state disk is improved.
The foregoing describes in detail one embodiment of a data reading method for a solid state disk in the embodiment of the present application, and the following describes another embodiment of the data reading method for a solid state disk in the embodiment of the present application. Referring to fig. 2, another embodiment of a data reading method for a solid state disk in the embodiment of the present application includes:
201. the solid state disk records the number of first write requests by using a first counter;
202. the solid state disk records the number of second write requests by using a second counter;
203. the method comprises the steps that a solid state disk receives a reading request sent by a host;
204. the solid state disk judges whether the number of the first write requests is equal to the number of the second write requests;
in this embodiment, the solid state disk may determine whether the number of the first write requests is equal to the number of the second write requests, that is, the solid state disk needs to determine whether the number of the write requests from the host received by the solid state disk is equal to the number of the write requests for completing the write operation by the solid state disk, if yes, step 202 is executed; if not, go to step 206.
205. The solid state disk reads an L2P table in DDR SDRAM in a mode without a read lock;
it should be noted that steps 201 to 205 in the embodiment shown in fig. 2 are similar to steps 101 to 105 in the embodiment shown in fig. 1, and detailed description thereof is omitted here.
206. The solid state disk reads an L2P table of the DDR SDRAM in a mode of a read lock;
in this embodiment, if the solid state disk determines that the number of the first write requests is not equal to the number of the second write requests, it indicates that there are outstanding write requests in the solid state disk, which means that there are new write operations that will update the L2P table in the DDR SDRAM, and therefore if the L2P table is read without a read lock, an error may occur in which the solid state disk reads old data, which refers to the L2P table updated by the last write operation that has been completed. In this case, the solid state disk needs to use a read lock to read the L2P table of the DDR SDRAM, so as to ensure that the solid state disk can read the correct latest updated L2P table.
Furthermore, the solid state disk reads the L2P table of the DDR SDRAM in a reading lock mode, and the specific mode is that firstly, the solid state disk applies for a reading lock from the DDR SDRAM, and after the DDR SDRAM receives a request for applying for the reading lock from the solid state disk, the reading lock is authorized to the solid state disk, so that the solid state disk can obtain the reading lock authorized by the DDR SDRAM; the solid state disk may then read the L2P table in the DDR SDRAM using a read lock.
207. And releasing the read lock in the DDR SDRAM by the solid state disk.
After the solid state disk reads the L2P table in the DDR SDRAM in a mode with a read lock, in order to ensure that a read request continuously sent by a host can apply for the read lock later, the DDR SDRAM needs to be accessed once again to release the read lock in the DDR SDRAM.
Specifically, the method for releasing the read lock in the DDR SDRAM by the solid state disk is to update a lock bit (lock bit) corresponding to the read lock in the DDR SDRAM, where the solid state disk may replace the lock bit from "1" to "0", at this time, the lock bit of "1" indicates that the DDR SDRAM authorizes the read lock to the solid state disk, and the lock bit of "0" indicates that the DDR SDRAM clears the "1" of the lock bit and is replaced by "0", which indicates that the solid state disk releases the read lock.
In the embodiment of the application, when the number of the received write requests sent by the host is determined to be equal to the number of the write requests of the solid state disk for completing the write operation, that is, when the solid state disk is determined to have no unfinished write request, the solid state disk can directly read the data in the DDR SDRAM without acquiring a read lock from the DDR SDRAM, so that the access times of the solid state disk for accessing the DDR SDRAM are reduced, the delay of data input and output of the solid state disk is reduced, and the read performance of the solid state disk is improved; when the solid state disk determines that the number of the received write requests sent by the host is not equal to the number of the write requests of the solid state disk for completing the write operation, that is, when the solid state disk determines that the unfinished write requests exist, the solid state disk can acquire a read lock from the DDR SDRAM and read data in the DDR SDRAM by using a mode with the read lock, wherein the read lock includes an L2P table, so that the solid state disk can be selected to be read by using a mode of whether the read lock is provided, and the flexibility and the practicability of the embodiment of the application are further improved.
The data reading method in the embodiment of the present application is described above, and the solid state disk in the embodiment of the present application is described below, please refer to fig. 3, where fig. 3 is an implementation manner of the solid state disk in the embodiment of the present application.
An embodiment of the solid state disk in the embodiment of the present application includes:
a first recording unit 301, configured to record, by using a first counter, the number of first write requests, where the number of first write requests is the number of write requests sent by a host and received by the solid state disk;
a second recording unit 302, configured to record, by using a second counter, a second number of write requests, where the second number of write requests is a number of write requests for the solid state disk to complete write operations;
a receiving unit 303, configured to receive a read request sent by the host;
a determining unit 304, configured to determine whether the number of the first write requests is equal to the number of the second write requests;
a first reading unit 305 for reading the logical-to-physical address translation L2P table in the double rate synchronous dynamic random access memory DDR SDRAM without a read lock when it is determined that the first number of write requests is equal to the second number of write requests.
In this embodiment, the solid state disk further includes:
and a second reading unit 306, configured to read the L2P table using a read lock when it is determined that the number of the first write requests is not equal to the number of the second write requests.
In this embodiment, the second reading unit 306 is specifically configured to apply for a read lock from the DDR SDRAM; acquiring the read lock authorized by the DDR SDRAM; the L2P table is read using a tape read lock.
In this embodiment, the solid state disk further includes:
and a releasing unit 307, configured to release the read lock in the DDR SDRAM.
In this embodiment of the application, after the receiving unit 303 receives the read request sent by the host, whether the number of the first write requests recorded in the first recording unit 301 of the judging unit 304 is the same as the number of the second write requests recorded in the second recording unit 302 or not may be used, and if the judging unit 304 determines that the number of the first write requests is the same as the number of the second write requests, it indicates that there are no unfinished write requests in the solid state disk.
The above is a description of one implementation of the solid state disk in the embodiment of the present application, and another implementation of the solid state disk in the embodiment of the present application is described below.
Referring to fig. 4, fig. 4 is a schematic diagram of another embodiment of a solid state disk in the embodiment of the present application.
The solid state disk 400 may have a relatively large difference due to different configurations or performances, and may include one or more Controllers (CPUs) 401 (e.g., one or more processors) and a memory 405, where the memory 405 stores one or more applications or data.
Memory 405 may be volatile storage or persistent storage, among other things. The program stored in memory 405 may include one or more modules, each of which may include a sequence of instructions operating on a server. Further, the controller 401 may be configured to communicate with the memory 405 to execute a series of instruction operations in the memory 405 on the solid state disk 400.
The solid state disk 400 may also include one or more power supplies 402, one or more wired or wireless network interfaces 403, one or more input-output interfaces 404, and/or one or more operating systems, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and the like.
It should be noted that the storage 405 in this embodiment may use a storage hard disk of a SATA interface, which is not limited herein. In addition, the solid state disk 400 in this embodiment may not be provided with a power down protection device, and may only be provided with one controller 401, which is not limited herein.
The process executed by the controller 401 in the solid state disk 400 in this embodiment is similar to the method process described in the embodiment shown in fig. 2, and is not described herein again.
The beneficial effect of this embodiment is that under the condition that the controller 401 determines that there is no unfinished write request, the L2P table is read in a manner without reading, so the controller 401 does not need to access the DDR SDRAM again to release the read lock after reading the L2P table, and thus the number of times that the controller 401 accesses the DDR SDRAM can be reduced, the time for accessing the DDR SDRAM is saved, the delay of the input/output data of the input/output interface 404 is reduced, and the read performance of the solid state disk is improved.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims (9)

1. A data reading method of a solid state disk is characterized by comprising the following steps:
recording the number of first write requests by a first counter for a solid state disk, wherein the number of the first write requests is the number of the write requests sent by a host and received by the solid state disk;
the solid state disk records the number of second write requests by using a second counter, wherein the number of the second write requests is the number of the write requests for completing write operation of the solid state disk;
the solid state disk receives a reading request sent by the host;
the solid state disk judges whether the number of the first write requests is equal to the number of the second write requests;
if so, the solid state disk reads the logical-to-physical address translation L2P table in the DDR SDRAM in a manner without a read lock.
2. The method of claim 1, wherein after the solid state disk determines whether the first number of write requests and the second number of write requests are equal, the method further comprises:
if not, the solid state disk reads the L2P table by using a mode with a read lock.
3. The method of claim 2, wherein the reading, by the solid state disk, the L2P table using a tape read lock comprises:
the solid state disk applies for a read lock from the DDR SDRAM;
the solid state disk acquires the read lock authorized by the DDR SDRAM;
the solid state disk reads the L2P table by using a mode with a read lock.
4. The method of claim 2 or 3, wherein after the solid state disk reads the L2P table using a tape read lock, the method further comprises:
and the solid state disk releases the read lock in the DDR SDRAM.
5. A solid state disk, comprising:
the device comprises a controller, a memory, an input and output device and a bus;
the controller, the memory and the input and output equipment are respectively connected with the bus;
the controller is configured to perform the steps of:
recording the number of first write requests by using a first counter, wherein the number of the first write requests is the number of the write requests sent by a host and received by the solid state disk; recording the number of second write requests by using a second counter, wherein the number of the second write requests is the number of the write requests for completing the write operation of the solid state disk; receiving a read request sent by the host; judging whether the number of the first write requests is equal to that of the second write requests; if so, the logical to physical address translation L2P table in the DDR SDRAM is read without a read lock.
6. The solid state disk of claim 5, wherein the controller is further configured to read the L2P table using a read lock when the solid state disk determines that the first number of write requests is not equal to the second number of write requests.
7. The solid state disk of claim 6, wherein the controller is specifically configured to apply for a read lock from the DDR SDRAM; acquiring the read lock authorized by the DDR SDRAM; the L2P table is read using a tape read lock.
8. The solid state disk of claim 6 or 7, wherein the controller is further configured to release a read lock in the DDR SDRAM.
9. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 4.
CN201810831053.6A 2018-07-25 2018-07-25 Data reading method of solid state disk and solid state disk Active CN109032522B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810831053.6A CN109032522B (en) 2018-07-25 2018-07-25 Data reading method of solid state disk and solid state disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810831053.6A CN109032522B (en) 2018-07-25 2018-07-25 Data reading method of solid state disk and solid state disk

Publications (2)

Publication Number Publication Date
CN109032522A CN109032522A (en) 2018-12-18
CN109032522B true CN109032522B (en) 2021-06-29

Family

ID=64646336

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810831053.6A Active CN109032522B (en) 2018-07-25 2018-07-25 Data reading method of solid state disk and solid state disk

Country Status (1)

Country Link
CN (1) CN109032522B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111261206B (en) * 2020-01-17 2022-03-08 苏州浪潮智能科技有限公司 Read-write method and device, electronic equipment and readable storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1737745A (en) * 2004-08-18 2006-02-22 华为技术有限公司 Read-write method for disc array data and parallel read-write method
CN1920780A (en) * 2006-08-15 2007-02-28 杭州华为三康技术有限公司 Method and system for accessing critical region
CN105224251A (en) * 2015-09-28 2016-01-06 浪潮(北京)电子信息产业有限公司 A kind of Read-Write Locks optimization method based on Linux and system
CN106997278A (en) * 2017-03-07 2017-08-01 记忆科技(深圳)有限公司 In a kind of raising solid state hard disc between double-core communication efficiency method
CN107481762A (en) * 2017-08-29 2017-12-15 郑州云海信息技术有限公司 A kind of trim processing method and processing devices of solid state hard disc

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9081503B2 (en) * 2012-02-16 2015-07-14 Apple Inc. Methods and systems for maintaining a storage volume with holes and filling holes
US10042679B2 (en) * 2016-02-01 2018-08-07 Oracle International Corporation System and method for promoting reader groups for lock cohorting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1737745A (en) * 2004-08-18 2006-02-22 华为技术有限公司 Read-write method for disc array data and parallel read-write method
CN1920780A (en) * 2006-08-15 2007-02-28 杭州华为三康技术有限公司 Method and system for accessing critical region
CN105224251A (en) * 2015-09-28 2016-01-06 浪潮(北京)电子信息产业有限公司 A kind of Read-Write Locks optimization method based on Linux and system
CN106997278A (en) * 2017-03-07 2017-08-01 记忆科技(深圳)有限公司 In a kind of raising solid state hard disc between double-core communication efficiency method
CN107481762A (en) * 2017-08-29 2017-12-15 郑州云海信息技术有限公司 A kind of trim processing method and processing devices of solid state hard disc

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Performance Optimization for All Flash Scale-out Storage;Myoungwon Oh 等;《IEEE Xplore》;20161231;全文 *
一种非阻塞读文件系统的实现方法;熊安萍 等;《计算机工程》;20110305;全文 *

Also Published As

Publication number Publication date
CN109032522A (en) 2018-12-18

Similar Documents

Publication Publication Date Title
GB2510180A (en) Selective restoration of data from non-volatile storage to volatile memory
JP2012527656A (en) System and method for tracking changes to volumes
WO2017148242A1 (en) Method for accessing shingled magnetic recording (smr) hard disk, and server
US20120047337A1 (en) Systems and methods for initializing a memory system
CN110716845B (en) Log information reading method of Android system
US20230384979A1 (en) Data processing method, apparatus, and system
CN107203480B (en) Data prefetching method and device
US20190087122A1 (en) Storage system
US9547460B2 (en) Method and system for improving cache performance of a redundant disk array controller
US9336157B1 (en) System and method for improving cache performance
GB2538621A (en) Verification of storage media upon deployment
CN109032522B (en) Data reading method of solid state disk and solid state disk
US9645946B2 (en) Encryption for solid state drives (SSDs)
US8595454B1 (en) System and method for caching mapping information for off-host backups
CN108628761B (en) Atomic command execution method and device
US9864643B1 (en) Using locks of different scopes in a data storage system to optimize performance and complexity
CN105808556B (en) Database operation method and database engine
CN108491160B (en) Data writing method and device
CN107766385B (en) Method and equipment for converting file format of virtual disk
CN113031863B (en) SSD command correlation management method, SSD command correlation management device, computer equipment and storage medium
CN106557385B (en) Data snapshot method and storage device
CN113948146A (en) Test method and device for solid state disk and electronic equipment
US10860668B1 (en) Querying system and method
US10795771B2 (en) Information handling system with reduced data loss in block mode
CN107766196B (en) Method and device for starting check of computing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant