CN108108131B - Data processing method and device for SSD (solid State disk) - Google Patents
Data processing method and device for SSD (solid State disk) Download PDFInfo
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- CN108108131B CN108108131B CN201711488633.1A CN201711488633A CN108108131B CN 108108131 B CN108108131 B CN 108108131B CN 201711488633 A CN201711488633 A CN 201711488633A CN 108108131 B CN108108131 B CN 108108131B
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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
- G06F3/062—Securing storage systems
- G06F3/0622—Securing storage systems in relation to access
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
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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
- G06F3/0668—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 invention provides a data processing method and a data processing device of an SSD, which relate to the technical field of information processing, and the method comprises the following steps: obtaining bad block information of each flush group; storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency; wherein the method further comprises: and reading the bad block information of each group of the flush from the cold data storage area before the SSD hard disk is started each time. The method and the device solve the technical problem that the memory bank needing to be loaded cannot be determined under the condition of memory bank reading error in the prior art. The technical effect of separating the bad memory blocks so as to accurately determine the memory banks to be loaded is achieved.
Description
Technical Field
The present invention relates to the field of information processing technologies, and in particular, to a data processing method and apparatus for an SSD hard disk.
Background
The Super area is used as a storage place for starting important data of the SSD hard disk, and the first memory blocks of each memory bank are read and written circularly without fixed addresses.
The current scheme is to sequentially run from the 0 th bank to the nth bank at each boot.
However, in the process of implementing the technical solution of the present invention, the inventor of the present invention finds that the above prior art has at least the following technical problems:
if a bank is read incorrectly, there is a problem that it is not possible to determine which bank needs to be loaded.
Disclosure of Invention
The embodiment of the invention provides a data processing method and device for an SSD, and solves the technical problem that a memory bank needing to be loaded cannot be determined under the condition of memory bank reading error in the prior art.
In view of the foregoing problems, embodiments of the present application are provided to provide a data processing method and apparatus for an SSD hard disk.
In a first aspect, the present invention provides a data processing method for an SSD hard disk, the method comprising: obtaining bad block information of each flush group; storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency; wherein the method further comprises: and reading the bad block information of each group of the flush from the cold data storage area before the SSD hard disk is started each time.
Preferably, the method further comprises: each group of flush comprises a first bank and a second bank, wherein the first bank and the second bank are backups of each other.
Preferably, before the SSD hard disk is started each time, the reading the bad block information of each group of the flush from the cold data storage area further includes: and reading bad block information and curgroup information from the cold data storage area, and guiding super information by using the bad block information and curgroup information.
In a second aspect, the present invention provides a data processing apparatus of an SSD hard disk, the apparatus comprising:
a first obtaining unit, configured to obtain bad block information of each group of the flush;
a first storage unit, configured to store the bad block information of each group of the flush in a cold data storage area, where the SSD hard disk includes a super area, and the super area includes a cold data storage area and a hot data storage area, where the cold data storage area is used to store data below a predetermined access frequency;
wherein the apparatus further comprises:
and the first reading unit is used for reading the bad block information of each flush group from the cold data storage area before the SSD hard disk is started each time.
Preferably, the apparatus further comprises:
and the second obtaining unit is used for obtaining the bad block table of the group of the flush according to the bad block information of each group of the flush.
Preferably, the apparatus further comprises:
each group of flush comprises a first bank and a second bank, wherein the first bank and the second bank are backups of each other.
Preferably, the apparatus further comprises:
the cold data store in each group of flashes is located ahead of the group of flashes;
the hot data store in each group of flush is located behind the each group of flush.
Preferably, the apparatus further comprises:
the first guiding unit is used for reading the bad block information and curgroup information from the cold data storage area positioned in front of each flush group and guiding the super information by the bad block information and the curgroup information.
In a third aspect, the present invention provides a data processing apparatus for an SSD hard disk, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the following steps when executing the program: obtaining bad block information of each flush group; storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency; wherein the steps further comprise: and reading the bad block information of each group of the flush from the cold data storage area before the SSD hard disk is started each time.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
1. according to the data processing method and device for the SSD, bad block information of each group of the flush is obtained; storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency; wherein the method further comprises: and reading the bad block information of each group of the flush from the cold data storage area before the SSD hard disk is started each time. The method and the device solve the technical problem that the memory bank needing to be loaded cannot be determined under the condition of memory bank reading error in the prior art. The technical effect of separating the bad memory blocks so as to accurately determine the memory banks to be loaded is achieved.
2. According to the embodiment of the application, each group of the flush comprises the first bank and the second bank, wherein the first bank and the second bank are backups of each other, and the technical effect of improving data safety is achieved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a schematic flowchart of a data processing method of an SSD hard disk according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a data processing apparatus of an SSD in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another data processing apparatus of an SSD hard disk according to an embodiment of the invention.
Detailed Description
The embodiment of the invention provides a data processing method and device for an SSD, which are used for solving the technical problem that a memory bank needing to be loaded cannot be determined under the condition of memory bank reading errors in the prior art. The technical scheme provided by the invention has the following general idea:
in the technical scheme of the embodiment of the invention, the bad block information of each flush group is obtained; storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency; wherein, the method further comprises: and reading the bad block information of each group of the flush from a cold data storage area before the SSD is started every time. The technical effect of separating the storage blocks so as to accurately determine the memory banks to be loaded is achieved.
The technical solutions of the present invention are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present invention are described in detail in the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
For the sake of clarity, the following terms are used to explain the present application:
SSD hard disks: the Solid State Drives (Solid State Drives), referred to as fixed disks for short, are hard disks made of Solid State drive (Solid State drive) by using a Solid electronic storage chip array, and are composed of a control unit and a storage unit (FLASH chip, DRAM chip). The specification, definition, function and use method of the interface of the solid state disk are completely the same as those of a common hard disk, and the appearance and size of the product are also completely consistent with those of the common hard disk. The method is widely applied to the fields of military affairs, vehicle-mounted, industrial control, video monitoring, network terminals, electric power, medical treatment, aviation, navigation equipment and the like.
Super flush: the flush refers to an operation process of writing important data in a memory such as a DDR (double data rate) memory into a hard disk during the operation process of the disk, and because the DDR data disappears after power failure, the DDR data needs to be written into the hard disk and can be read next time. super flush is an operation process for writing critical data of the relationship hard disk startup into the hard disk. The corresponding Load is a process of reading out the data.
Super region: this area is named as a super area because it stores important information necessary for starting the hard disk and is not subject to error.
FTL: the FTL is an english abbreviation of Flash translation layer, and the FTL is a software intermediate layer, originally proposed by intel, and is used for simulating a Flash memory into a virtual block device, so that a block device file system such as FAT can be implemented on the Flash memory.
5, bank: storage library
Curgroup information: current group information
Example one
An embodiment of the present invention provides a data processing method for an SSD hard disk, and fig. 1 is a schematic flow diagram of the data processing method for the SSD hard disk in the embodiment of the present invention. As shown in fig. 1, the method comprises:
step 110: obtaining bad block information of each flush group;
specifically, the group of the flush is a group of super flush, where each group of the flush may have a bad block problem, and a bad block in each group of the flush is obtained, so as to obtain a bad block table of the group of the flush.
Step 120: storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency;
specifically, the Super area refers to a place for storing FTL algorithm important data, such as a pointer of a logic mapping table, FTL algorithm important data, a bad block table, a block mapping relationship, and the like. The method comprises the steps that a Super area needs to be triggered first to download data stored in the Super area when the SSD hard disk is started, and if the data stored in the Super area fails to be downloaded, the whole SSD hard disk fails to be started. And dividing the data stored in the Super area into a cold data storage area and a hot data storage area, wherein the hot data is data with frequent access, and conversely, the data with infrequent access is cold data. Therefore, data with high data modification frequency and data with low data modification frequency are stored separately, the erasing frequency of the stored super data blocks is reduced, and the technical effect of reducing the starting failure probability of the SSD hard disk is achieved.
Step 130: before the SSD hard disk is started each time, bad block information of each group of the flush is read from a cold data storage area.
Further, the method further comprises: each group of flush comprises a first bank and a second bank, wherein the first bank and the second bank are backups of each other.
Specifically, each high-speed cleaning group includes two storage banks, namely a first bank and a second bank, which are backed up with each other for data security, that is, the data stored in the first bank and the second bank are synchronized.
Further, before the SSD hard disk is started each time, reading the bad block information of each group of the flush from the cold data storage area further includes: and reading the bad block information and curgroup information from the cold data storage area, and guiding the super information by the bad block information and the curgroup information.
Specifically, curgroup information is current group information, and before the SSD hard disk is started each time, bad block information and current group information are read from the cold data area, and then super information is read according to the bad block information and the current group information, so that a technical effect of accurately determining the memory bank to be read out can be achieved under the condition of a memory bank reading error.
Example 2
Based on the same inventive concept as the data processing method of the SSD hard disk in the foregoing embodiment, the present invention further provides a data processing apparatus of the SSD hard disk, as shown in fig. 2, including:
a first obtaining unit 11, where the first obtaining unit 11 is configured to obtain bad block information of each group of the flush;
the first storage unit 12 is used for storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency;
wherein, the device still includes:
and the first reading unit 13, wherein the first reading unit 13 is configured to read the bad block information of each group of flush from the cold data storage area before the SSD hard disk is started each time.
Further, the apparatus further comprises:
each group of flush comprises a first bank and a second bank, wherein the first bank and the second bank are backups of each other.
Further, the apparatus further comprises:
and the first guiding unit is used for reading the bad block information and curgroup information from the cold data storage area and guiding the super information by the bad block information and the curgroup information.
Various changes and specific examples of the data processing method of the SSD hard disk in embodiment 1 of fig. 1 are also applicable to the data processing apparatus of the SSD hard disk in this embodiment, and through the foregoing detailed description of the data processing method of the SSD hard disk, those skilled in the art can clearly know the implementation method of the data processing apparatus of the SSD hard disk in this embodiment, so for the brevity of the description, detailed descriptions are omitted here.
Example 3
Based on the same inventive concept as the data processing method of the SSD hard disk in the foregoing embodiments, the present invention also provides a data processing apparatus of the SSD hard disk, on which a computer program is stored, which when executed by a processor implements the steps of any one of the foregoing data processing methods of the SSD hard disk.
Where in fig. 3 a bus architecture (represented by bus 300), bus 300 may include any number of interconnected buses and bridges, bus 300 linking together various circuits including one or more processors, represented by processor 302, and memory, represented by memory 304. The bus 300 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 306 provides an interface between the bus 300 and the receiver 301 and transmitter 303. The receiver 301 and the transmitter 303 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium.
The processor 302 is responsible for managing the bus 300 and general processing, and the memory 304 may be used for storing data used by the processor 302 in performing operations.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
1. according to the data processing method and device for the SSD, bad block information of each group of the flush is obtained; storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency; wherein, the method further comprises: before the SSD hard disk is started each time, bad block information of each group of the flush is read from a cold data storage area. The method and the device solve the technical problem that the memory bank needing to be loaded cannot be determined under the condition of memory bank reading error in the prior art. The technical effect of separating the bad memory blocks so as to accurately determine the memory banks to be loaded is achieved.
2. According to the embodiment of the application, each group of the flush comprises the first bank and the second bank, wherein the first bank and the second bank are backups of each other, and the technical effect of improving data security is achieved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A data processing method of an SSD is characterized by comprising the following steps:
obtaining bad block information of each flush group;
storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency;
wherein the method further comprises:
and reading the bad block information of each group of the flush from the cold data storage area before the SSD hard disk is started each time.
2. The method of claim 1, wherein the method further comprises:
each group of flush comprises a first bank and a second bank, wherein the first bank and the second bank are backups of each other.
3. The method of claim 1, wherein reading the bad block information for each group of flush from the cold data storage area before each boot of the SSD hard disk further comprises:
and reading bad block information and curgroup information from the cold data storage area, and guiding super information by using the bad block information and curgroup information.
4. A data processing apparatus of an SSD hard disk, the apparatus comprising:
a first obtaining unit, configured to obtain bad block information of each group of the flush;
a first storage unit, configured to store the bad block information of each group of the flush in a cold data storage area, where the SSD hard disk includes a super area, and the super area includes a cold data storage area and a hot data storage area, where the cold data storage area is used to store data below a predetermined access frequency;
wherein the apparatus further comprises:
and the first reading unit is used for reading the bad block information of each flush group from the cold data storage area before the SSD hard disk is started each time.
5. A data processing apparatus of an SSD hard disk, 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 following steps when executing the program:
obtaining bad block information of each flush group;
storing the bad block information of each flush group in a cold data storage area, wherein the SSD hard disk comprises a super area, the super area comprises a cold data storage area and a hot data storage area, and the cold data storage area is used for storing data with the access frequency lower than a preset access frequency;
wherein the steps further comprise:
and reading the bad block information of each group of the flush from the cold data storage area before the SSD hard disk is started each time.
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| CN100595839C (en) * | 2007-09-25 | 2010-03-24 | Ut斯达康通讯有限公司 | Hard disc error detection and fault-tolerant method in stream media uses |
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