CN110489255A - The method and system of read error process flow optimization in a kind of solid state hard disk - Google Patents
The method and system of read error process flow optimization in a kind of solid state hard disk Download PDFInfo
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- CN110489255A CN110489255A CN201910653487.6A CN201910653487A CN110489255A CN 110489255 A CN110489255 A CN 110489255A CN 201910653487 A CN201910653487 A CN 201910653487A CN 110489255 A CN110489255 A CN 110489255A
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
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- 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
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
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Abstract
The invention proposes the method and system that read error process flow in a kind of solid state hard disk optimizes, the identical spatial cache of two spaces is arranged in this method first；When read error occurs in solid state hard disk, triggering reads error correction process and completes correcting data error；After the completion of reading error correction, by judging whether current cache has parking space, to judge the data flow after the completion of error correction；Or by judging whether spare caching has parking space, to judge the data flow after the completion of error correction.When reading the data in solid state hard disk again next time, first determine whether data are stored in caching, and if it exists, then from caching returned data, otherwise, then from data are read in other physical address in solid state hard disk, the invention also provides optimization systems.The present invention is based on NAND particle characteristics, in solid state hard disk read error process, the successful data of error correction are moved in time in new physical address, reduce trigger flow, to reduce the influence to performance.
Description
Technical field
The invention belongs to solid state hard disk optimisation technique field, in particular to read error process flow is excellent in a kind of solid state hard disk
The method and system of change.
Background technique
With the development and extensive use of the technologies such as internet, cloud computing, Internet of Things, in human lives, at every moment
The data that magnanimity will be generated need to handle and store, and the high speed development of information technology proposes the performance of storage system higher
Requirement.Solid state hard disk is widely adopted because its read or write speed is fast, energy consumption is lower.
But due to the characteristic of NAND itself, after read distrub or retention, may exist and occur
The case where read error, needs additional error correction process at this time.If reading the data of the position again, still there is very maximum probability to enter error correction
Process.And the error correction process may have adverse effect on the readwrite performance of I/O
Summary of the invention
The invention proposes the method and systems that read error process flow in a kind of solid state hard disk optimizes, when data are read
Data after the completion of error correction are carried out effective data-moving, avoided by mistake by reading error correction process for after the completion of correcting data error
Enter back into ERF process next time.
To achieve the goals above, the invention proposes in a kind of solid state hard disk read error process flow optimize method and
System, method includes the following steps:
S1: the identical hard disk cache space of setting two spaces, respectively current cache and spare caching；
S2: when read error occurs in solid state hard disk, error correction process is read in triggering, completes correcting data error；
S3: after the completion of reading error correction process, by judging whether current cache has parking space, to judge to complete error correction
Data afterwards are put into other physical address in current cache or solid state hard disk；Or by judging whether spare caching has storage
Space, to judge for the data after the completion of error correction to be put into other physical address in spare caching or solid state hard disk；
S4: when reading the data in solid state hard disk again next time, first determine whether data are stored in current cache and spare
It caches, if it exists any one in current cache and spare caching, then the returned data from current cache or spare caching；It is no
Then, then from reading data in other physical address in the solid state hard disk.
Further, step S3 further include:
When current cache does not have space, the data after the completion of error correction are put into solid state hard disk after other physical address, are released
Current cache is put, and the current cache after release is set as the spare caching of next round storage；
When spare caching does not have space, the data after the completion of error correction are put into solid state hard disk after other physical address, are released
Spare caching is put, and the spare caching after release is set as the current cache of next round storage.
Further, the current cache and the size of spare caching are (15+1) raid*64K.
Further, step S2 includes: solid state hard disk after read disturb or retention, solid state hard disk
Middle physical unit cell charge is lost or is increased, and error correction process is read in triggering；The reading error correction process include reading data retry,
Soft decoding and data reconstruction.
Further, the process of step S3 are as follows:
After the completion of reading error correction process, first determining whether current cache, whether there are also spaces, will if current cache has space
Data after the completion of error correction are stored in current cache, and update the first mapping address of data after the completion of error correction；If current cache does not have
There is space, then other physical address in solid state hard disk is written into data after the completion of error correction；Then current cache is discharged, and release
Current cache afterwards is set as the spare caching of next round storage；
If current cache does not have space, data after the completion of error correction are written to the process of other physical address in solid state hard disk
In, if there are data to complete to read error correction process, judge whether spare caching has space, it is if spare be cached with space, error correction is complete
Data after are stored in spare caching, and update the second mapping address of data after the completion of error correction；If the spare no space of caching,
Other physical address in solid state hard disk then are written into data after the completion of error correction；Then spare caching is discharged, and standby after release
It is set as the current cache of next round storage with caching.
The system of read error process flow optimization in a kind of solid state hard disk, including setup module, correcting data error module, judgement
Storage module and optimization module；
The setup module is for being arranged the identical hard disk cache space of two spaces, respectively current cache and spare slow
It deposits；
The correcting data error module is used for when read error occurs in solid state hard disk, and error correction process is read in triggering, is completed data and is entangled
It is wrong；
The judgement storage module is used for after the completion of reading error correction process, by judging whether current cache has storage empty
Between, to judge for the data after the completion of error correction to be put into other physical address in current cache or solid state hard disk；Or by sentencing
Whether the spare caching that breaks has parking space, to judge for the data after the completion of error correction to be put into its in spare caching or solid state hard disk
His physical address；
The optimization module is used to first determine whether data are stored in when reading the data in solid state hard disk again next time and work as
Preceding caching and spare caching, any one in current cache and spare caching if it exists, then from current cache or spare caching
Middle returned data；Otherwise, then from reading data in other physical address in the solid state hard disk.
Further, the system also includes release modules；
When the release module does not have space for current cache, the data after the completion of error correction are put into its in solid state hard disk
After his physical address, current cache is discharged, and the current cache after release is set as the spare caching of next round storage；It is spare
When caching does not have space, the data after the completion of error correction are put into solid state hard disk after other physical address, spare caching is discharged, and
Spare caching after release is set as the current cache of next round storage.
Further, the judgement storage module judges that storage module and second judges storage module including first；
Described first judges that storage module is used to judge whether current cache has space, will if current cache has space
Data after the completion of error correction are stored in current cache, and update the first mapping address of data after the completion of error correction；If current cache is empty
Between without space, then by after the completion of error correction data write-in solid state hard disk in other physical address；
Described second judges that storage module does not have space for current cache, then data write-in solid-state after the completion of error correction is hard
In disk during other physical address, if there is data to complete to read error correction process, judging spare caching, whether there are also spaces, if standby
With space is cached with, then the data after the completion of error correction are stored in spare caching, and update the second mapping of data after the completion of error correction
Address；If other physical address in solid state hard disk are written in data after the completion of error correction by the spare no space of caching.
The effect provided in summary of the invention is only the effect of embodiment, rather than invents all whole effects, above-mentioned
A technical solution in technical solution have the following advantages that or the utility model has the advantages that
The embodiment of the present invention proposes a kind of method and system of read error process flow optimization in solid state hard disk, this method
The identical hard disk cache space of setting two spaces, respectively current cache and spare caching first；When solid state hard disk is read
When mistake, error correction process is read in triggering, completes correcting data error；After the completion of reading error correction process, first determine whether current cache whether also
There is space, if current cache has space, the data after the completion of error correction is stored in current cache, and update data after the completion of error correction
The first mapping address；If current cache does not have space, physically by other in data write-in solid state hard disk after the completion of error correction
Location；Then current cache is discharged, and the current cache after release is set as the spare caching of next round storage；If current cache
There is no space, then data after the completion of error correction are written in solid state hard disk during other physical address, if there are data to complete to read
Error correction process, judges whether spare caching has space, if spare be cached with space, the data deposit after the completion of error correction is spare
Caching, and update the second mapping address of data after the completion of error correction；If the spare no space of caching, by data after the completion of error correction
Other physical address in solid state hard disk are written；Then spare caching is discharged, and the spare caching after release is set as next round
The current cache of storage.The invention also provides the systems that read error process flow optimizes in a kind of solid state hard disk.Base of the present invention
In NAND particle characteristics, solid state hard disk read error process, the successful data of error correction are moved in time in new physical address,
Trigger flow is reduced, to reduce the influence to performance.
Detailed description of the invention
Attached drawing 1 is the method flow of read error process flow optimization in a kind of solid state hard disk of the proposition of the embodiment of the present invention 1
Figure；
Attached drawing 2 is the system schematic that the embodiment of the present invention 1 proposes read error process flow optimization in a kind of solid state hard disk.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of the description present invention, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Embodiment 1
The embodiment of the present invention 1 proposes a kind of method and system of read error process flow optimization in solid state hard disk, the party
Method the following steps are included:
S1: the identical hard disk cache space of setting two spaces, respectively current cache and spare caching；Wherein, currently
The size of caching and spare caching is (15+1) raid*64K.
S2: when read error occurs in solid state hard disk, error correction process is read in triggering, completes correcting data error；Solid state hard disk is passed through
Read disturb perhaps lose or increase in solid state hard disk after retention by physical unit cell charge, and error correction is read in triggering
Process；Reading error correction process includes that reading data retries read retry, soft decoding soft decoding and data reconstruction data
rebuild。
S3: after the completion of reading error correction process, by judging whether current cache has parking space, to judge to complete error correction
Data afterwards are put into other physical address in current cache or solid state hard disk；Or by judging whether spare caching has storage
Space, to judge for the data after the completion of error correction to be put into other physical address in spare caching or solid state hard disk；
Step S3 further include: when current cache does not have space, the data after the completion of error correction are put into other in solid state hard disk
After physical address, current cache is discharged, and the current cache after release is set as the spare caching of next round storage；It is spare slow
It deposits when there is no space, the data after the completion of error correction is put into solid state hard disk after other physical address, spare caching, and handle are discharged
Spare caching after release is set as the current cache of next round storage.
The detailed process of step S3 are as follows: after the completion of reading error correction process, first determining whether current cache, whether there are also spaces, if
Current cache has space, then the data after the completion of error correction is stored in current cache, and updates first of data after the completion of error correction and reflect
Penetrate address；If current cache does not have space, other physical address in solid state hard disk are written into data after the completion of error correction；Then it releases
Current cache is put, and the current cache after release is set as the spare caching of next round storage；
If current cache does not have space, data after the completion of error correction are written to the process of other physical address in solid state hard disk
In, if there are data to complete to read error correction process, judge whether spare caching has space, it is if spare be cached with space, error correction is complete
Data after are stored in spare caching, and update the second mapping address of data after the completion of error correction；If the spare no space of caching,
Other physical address in solid state hard disk then are written into data after the completion of error correction；Then spare caching is discharged, and standby after release
It is set as the current cache of next round storage with caching, current cache and spare caching are recycled, and reduce triggering ERF process.
Data after the completion of by error correction carry out after moving optimization, in step s 4, read in solid state hard disk again when next time
When data, first determine whether data are stored in current cache and spare caching, if it exists in current cache and spare caching
Any one, then the returned data from current cache or spare caching；Otherwise, then from being read in other physical address in solid state hard disk
Access evidence.
As Fig. 1 provides the method stream that read error process flow optimizes in a kind of solid state hard disk of the proposition of the embodiment of the present invention 1
Cheng Tu；
In step s101, the identical hard disk cache space of setting two spaces, the size of current cache and spare caching
It is (15+1) raid*64K；
In step s 102, when read error occurs in solid state hard disk, error correction process is read in triggering, completes correcting data error；
In step s 103, judge whether current cache has parking space；If there is parking space, then enter step
S104；If thening follow the steps S105 without parking space；
In step S104, the data after the completion of error correction are stored in current cache, and update the of data after the completion of error correction
One mapping address；
In step s105, other physical address in solid state hard disk are written into data after the completion of error correction；
In step s 106, current cache is discharged, and the current cache after release is set as the spare of next round storage
Caching；
In step s 107, during executing step S105, if there are data to complete to read error correction process, judge spare
Whether caching has parking space；If there is parking space, then S108 is entered step；If thened follow the steps without parking space
Other physical address in solid state hard disk are written in data after the completion of error correction by S105.
In step S108, the data after the completion of error correction are stored in spare caching, and update the of data after the completion of error correction
Two mapping address；
In step S109, current cache is discharged, and the spare caching after release is set as the current of next round storage
Caching.
Method based on read error process flow optimization in a kind of solid state hard disk proposed by the present invention, it is also proposed that Yi Zhonggu
The system that read error process flow optimizes in state hard disk.As Fig. 2 gives read error process flow optimization in a kind of solid state hard disk
System schematic.The system includes setup module, correcting data error module, judges storage module and optimization module；
Setup module is for being arranged the identical hard disk cache space of two spaces, respectively current cache and spare caching；
Correcting data error module is used for when read error occurs in solid state hard disk, and error correction process is read in triggering, completes correcting data error；
Judge storage module for by judging whether current cache has parking space, coming after the completion of reading error correction process
Judge for the data after the completion of error correction to be put into other physical address in current cache or solid state hard disk；Or it is spare by judging
Whether caching has parking space, to judge for the data after the completion of error correction to be put into other physics in spare caching or solid state hard disk
Address；
Optimization module is used for when reading the data in solid state hard disk again next time, and it is current slow to first determine whether data are stored in
Deposit with spare caching, any one in current cache and spare caching, then return from current cache or spare caching if it exists
Return data；Otherwise, then from reading data in other physical address in solid state hard disk.
System further includes release module；
When release module does not have space for current cache, the data after the completion of error correction are put into other objects in solid state hard disk
After managing address, current cache is discharged, and the current cache after release is set as the spare caching of next round storage；Spare caching
When not having space, the data after the completion of error correction are put into solid state hard disk after other physical address, discharge spare caching, and handle is released
Spare caching after putting is set as the current cache of next round storage.
Judge that storage module judges that storage module and second judges storage module including first；
First judges storage module for judging whether current cache has space, if current cache has space, by error correction
Data after the completion are stored in current cache, and update the first mapping address of data after the completion of error correction；If current cache space does not have
There is space, then other physical address in solid state hard disk is written into data after the completion of error correction；
Second judges that storage module does not have space for current cache, then data after the completion of error correction is written in solid state hard disk
During other physical address, if there is data to complete to read error correction process, judging spare caching, whether there are also spaces, if spare slow
There is space, then the data after the completion of error correction is stored in spare caching, and update the second mapping address of data after the completion of error correction；
If other physical address in solid state hard disk are written in data after the completion of error correction by the spare no space of caching.
Above content is only to structure example of the invention and explanation, affiliated those skilled in the art
It makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from invention
Structure or beyond the scope defined by this claim, be within the scope of protection of the invention.
Claims (8)
1. a kind of method that read error process flow optimizes in solid state hard disk, which comprises the following steps:
S1: the identical hard disk cache space of setting two spaces, respectively current cache and spare caching；
S2: when read error occurs in solid state hard disk, error correction process is read in triggering, completes correcting data error；
S3: after the completion of reading error correction process, by judging whether current cache has parking space, come judge will be after the completion of error correction
Data are put into other physical address in current cache or solid state hard disk；Or by judging whether spare caching has storage empty
Between, to judge for the data after the completion of error correction to be put into other physical address in spare caching or solid state hard disk；
S4: when reading the data in solid state hard disk again next time, first determining whether data are stored in current cache and spare caching,
Any one in current cache and spare caching if it exists, the then returned data from current cache or spare caching；Otherwise, then
From reading data in other physical address in the solid state hard disk.
2. the method that read error process flow optimizes in a kind of solid state hard disk according to claim 1, which is characterized in that step
Rapid S3 further include:
When current cache does not have space, the data after the completion of error correction are put into solid state hard disk after other physical address, release is worked as
Preceding caching, and the current cache after release is set as the spare caching that next round is stored；
When spare caching does not have space, the data after the completion of error correction are put into solid state hard disk after other physical address, are discharged standby
With caching, and the spare caching after release is set as the current cache of next round storage.
3. the method that read error process flow optimizes in a kind of solid state hard disk according to claim 1, which is characterized in that institute
The size for stating current cache and spare caching is (15+1) raid*64K.
4. the method that read error process flow optimizes in a kind of solid state hard disk according to claim 1, which is characterized in that step
Rapid S2 includes: solid state hard disk after read disturb or retention, and physical unit cell charge is lost in solid state hard disk
It loses or increases, error correction process is read in triggering；The reading error correction process include reading data retry, soft decoding and data reconstruction.
5. the method that read error process flow optimizes in a kind of solid state hard disk according to claim 1 or 2, feature exist
In the process of step S3 are as follows:
After the completion of reading error correction process, first determining whether current cache, whether there are also spaces, if current cache has space, by error correction
Data after the completion are stored in current cache, and update the first mapping address of data after the completion of error correction；If current cache is not free
Between, then other physical address in solid state hard disk are written into data after the completion of error correction；Then current cache is discharged, and after release
Current cache is set as the spare caching of next round storage；
If current cache does not have space, data after the completion of error correction are written in solid state hard disk during other physical address,
If there are data to complete to read error correction process, judge whether spare caching has space, if spare be cached with space, after the completion of error correction
Data be stored in spare caching, and update the second mapping address of data after the completion of error correction；If the spare no space of caching, will
Other physical address in data write-in solid state hard disk after the completion of error correction；Then spare caching is discharged, and spare slow after release
Deposit the current cache for being set as next round storage.
6. the system that read error process flow optimizes in a kind of solid state hard disk, which is characterized in that including setup module, correcting data error
Module judges storage module and optimization module；
The setup module is for being arranged the identical hard disk cache space of two spaces, respectively current cache and spare caching；
The correcting data error module is used for when read error occurs in solid state hard disk, and error correction process is read in triggering, completes correcting data error；
The judgement storage module is used for after the completion of reading error correction process, by judging whether current cache has parking space, is come
Judge for the data after the completion of error correction to be put into other physical address in current cache or solid state hard disk；Or it is spare by judging
Whether caching has parking space, to judge for the data after the completion of error correction to be put into other physics in spare caching or solid state hard disk
Address；
The optimization module is used for when reading the data in solid state hard disk again next time, and it is current slow to first determine whether data are stored in
Deposit with spare caching, any one in current cache and spare caching, then return from current cache or spare caching if it exists
Return data；Otherwise, then from reading data in other physical address in the solid state hard disk.
7. the system that read error process flow optimizes in a kind of solid state hard disk according to claim 6, which is characterized in that institute
The system of stating further includes release module；
When the release module does not have space for current cache, the data after the completion of error correction are put into other objects in solid state hard disk
After managing address, current cache is discharged, and the current cache after release is set as the spare caching of next round storage；Spare caching
When not having space, the data after the completion of error correction are put into solid state hard disk after other physical address, discharge spare caching, and handle is released
Spare caching after putting is set as the current cache of next round storage.
8. the system that read error process flow optimizes in a kind of solid state hard disk according to claim 6, which is characterized in that institute
It states and judges that storage module judges that storage module and second judges storage module including first；
Described first judges storage module for judging whether current cache has space, if current cache has space, by error correction
Data after the completion are stored in current cache, and update the first mapping address of data after the completion of error correction；If current cache space does not have
There is space, then other physical address in solid state hard disk is written into data after the completion of error correction；
Described second judges that storage module does not have space for current cache, then data after the completion of error correction is written in solid state hard disk
During other physical address, if there is data to complete to read error correction process, judging spare caching, whether there are also spaces, if spare slow
There is space, then the data after the completion of error correction is stored in spare caching, and update the second mapping address of data after the completion of error correction；
If other physical address in solid state hard disk are written in data after the completion of error correction by the spare no space of caching.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209447A (en) * | 2016-07-07 | 2016-12-07 | 深圳市创梦天地科技有限公司 | The fault handling method of distributed caching and device |
| CN108595487A (en) * | 2018-03-14 | 2018-09-28 | 摇了购（武汉）电子商务有限公司 | The method and system of data are accessed under a kind of big data high concurrent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209447A (en) * | 2016-07-07 | 2016-12-07 | 深圳市创梦天地科技有限公司 | The fault handling method of distributed caching and device |
| CN108595487A (en) * | 2018-03-14 | 2018-09-28 | 摇了购（武汉）电子商务有限公司 | The method and system of data are accessed under a kind of big data high concurrent |
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