CN107957922A - A kind of memory power-off protection method - Google Patents
A kind of memory power-off protection method Download PDFInfo
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- CN107957922A CN107957922A CN201711442932.1A CN201711442932A CN107957922A CN 107957922 A CN107957922 A CN 107957922A CN 201711442932 A CN201711442932 A CN 201711442932A CN 107957922 A CN107957922 A CN 107957922A
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- Prior art keywords
- power
- memory
- protection method
- storage region
- reserved memory
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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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1471—Saving, restoring, recovering or retrying involving logging of persistent data for recovery
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
-
- 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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1441—Resetting or repowering
-
- 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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
- G06F11/1453—Management of the data involved in backup or backup restore using de-duplication of the data
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Quality & Reliability (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Power Sources (AREA)
Abstract
The present invention provides a kind of memory power-off protection method, is related to memory technology field, a kind of memory power-off protection method, comprises the following steps：S1：Divide the memory into normal storage region and reserved memory area；S2：Different activation voltage is distributed for normal storage region and reserved memory area；S3：When main power source is stopped power supply, cut-in stand-by power supply, activation reserved memory area is started to work；S4：When main power source restores electricity, the data in reserved memory area are write into normal storage region.A kind of memory power-off protection method power-off protection of the present invention is timely, and data storage is complete, and convenient operation.
Description
Technical field
The present invention relates to memory technology field,
Especially, the present invention relates to a kind of memory power-off protection method.
Background technology
In general, household electrical appliance, communicator and embedded system, such as set-top box, use is used as using nonvolatile memory
In the storage device of storage and processing data.Wherein flash memory is a kind of memory of nonvolatile type, is counted wherein
According to can be electrically erased through the gate and rewrite.Because memory consumes lower-wattage, such as hard disk than the storage medium based on magnetic disk storage
It equally may have access to, and there is compact size, so it is suitable for mancarried device.
Especially there is cluster-based storage, cluster-based storage refers to the cluster for being used to store being made of several universal storage devices,
The performance and capacity for forming each storage system of cluster-based storage can be able to be superimposed and extended by way of cluster, generally be existed
Management node is configured with cluster, the dispatch deal to carrying out data storage as other storage devices of memory node.
Cluster is during file is handled, it is possible that the situation that a certain equipment is stopped, is typically due to electricity
Caused by the power down of source, after power down, the data in equipment caching can lose data because system exception is closed.
For cluster storage system, the method for typically using data redundancy carrys out the security of data in raising system, number
Refer to repeat storage according to redundancy or repeat transmission data to prevent the loss of data, but repeatedly store and transmit data certainty
Cost can be improved, and reduces the efficiency of system.
The content of the invention
It is an object of the invention to provide a kind of power-off protection is timely, data storage is complete, and the memory of convenient operation
Power-off protection method.
To solve the above problems, the present invention adopts the following technical scheme that what is be achieved：
A kind of memory power-off protection method, comprises the following steps：
S1：Divide the memory into normal storage region and reserved memory area；
S2：Different activation voltage is distributed for normal storage region and reserved memory area；
S3：When main power source is stopped power supply, cut-in stand-by power supply, activation reserved memory area is started to work；
S4：When main power source restores electricity, the data in reserved memory area are write into normal storage region.
Preferably, when performing step S2, the activation voltage of normal storage region is main power voltage.
Preferably, when performing step S2, the activation voltage of reserved memory area is backup power source voltage.
Preferably, when performing step S1, the size that normal storage region and reserved memory area are deposited is to be deposited in memory
Store up the integral multiple of page size.
Preferably, when performing step S3, reserved memory area only writes for data.
Preferably, when performing step S3, cut-in stand-by power supply, and send alarm to control centre.
Preferably, perform step S4 when, stand-by power supply is still working in the given time, to reserved memory area in number
Stop power supply according to stand-by power supply after all writing normal storage region.
Preferably, when performing step S4, the time value of stand-by power supply work after default main power source is powered.
Preferably, after performing step S4, the data in reserved memory area are all wiped.
A kind of memory power-off protection method beneficial effect of the present invention is：Power-off protection is timely, and data storage is complete, and
Convenient operation.
Brief description of the drawings
Fig. 1 is the flow diagram of one embodiment of the invention.
Embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Memory particularly cluster-based storage is during file is handled, it is possible that the situation that a certain equipment is stopped,
It is typically due to caused by power supply power-fail, after power down, the data in equipment caching can lose because system exception is closed
Data.
As shown in Figure 1, being only one of embodiment of the present invention, in order to reach timely power-off protection, ensure that data are deposited
Storage completely protects memory, and the present invention proposes a kind of memory power-off protection method, comprises the following steps：
S1：Divide the memory into normal storage region and reserved memory area；
As soon as memory can also be multiple, if memory is only a division region, if memory is
Cluster-based storage, including multiple memories, that is more preferable, directly separates a small number of memories as reserved memory.
S2：Different activation voltage is distributed for normal storage region and reserved memory area；
Two storage regions do different functions respectively, can also separate and be managed, and activation voltage is different, can also avoid pre-
The storage region abnormal activation stayed.
For further, when performing step S2, the activation voltage of normal storage region is main power voltage.It is pre- to retain
The activation voltage in storage area domain is backup power source voltage.
That is when main power source is powered, reserved memory area will not be activated, and will not enter working status.It is and same
Sample, when stand-by power supply starts power supply, normal storage region will not be activated, and will not carry out data access.
Followed by step S3：When main power source is stopped power supply, cut-in stand-by power supply, activation reserved memory area starts work
Make；
Main power source is once stopped power supply, and stand-by power supply starts to power at once, and reserved memory area is activated start-up operation, is unlikely to
During power-off, data can not write, and later data can not be integrated and caused damages.
It is finally step S4：When main power source restores electricity, by the data write-in normal storage area in reserved memory area
Domain.
Once main power source restores electricity, it is possible to normal storage region is activated, and by the data in reserved memory area
Write to normal storage region.
Data so in normal storage region will not omit, and the data of the front and rear even during power-off of power-off are normally deposited
Storage.
Certainly, when performing step S1, the size that normal storage region and reserved memory area are deposited is to be deposited in memory
Store up the integral multiple of page size.
Also mention above, memory can be the cluster that a storaging piece can also be multiple storaging piece compositions, then
, it is necessary to which storaging piece is divided into two storage regions when memory is single storaging piece, two storage regions are must assure that at this time
Size is the integral multiple of memory page size in memory, like that data will not be caused can not to read and write or waste memory space
Situation.
It should be noted that when performing step S3, reserved memory area only writes for data, not for being read out.
It is reserved memory area after all, the data in it are simultaneously imperfect, do not run for reading, and in turnoff time
Between, the present invention functions only as the work that the complete of data is protected during main power source power-off rather than substitutes memory when power is off.
Since only accomplishing to protect during power-off, memory can not work normally, then when performing step S3, cut-in stand-by electricity
Source, and send alarm to control centre.
During power-off, notify that the staff of control centre is overhauled, if for main power source caused by other machines damage
Stop power supply, carry out power supply repairing at once.
Also when performing step S4, stand-by power supply is still working in the given time, to reserved memory area in number
Stop power supply according to stand-by power supply after all writing normal storage region.
By in reserved memory area data all write-in normal storage regions, it is necessary to assure reserved memory area can be just
Often work and be read out, then be still to work normally in the stand-by power supply scheduled time, be powered for reserved memory area.
It is so natural, it is necessary in advance default main power source be powered after stand-by power supply work time value.
Finally, after performing step S4, the data in reserved memory area are all wiped.
During easy to power off again, reserved memory area can still carry out urgent data and preserve.
A kind of power-off protection of memory power-off protection method of the present invention is timely, and data storage is complete, and convenient operation.
The present invention is not limited to above-mentioned specific embodiment, and the invention may be variously modified and varied.Every foundation
The technical spirit of the present invention should be included in the present invention to embodiment of above any modification, equivalent replacement, improvement and so on
Protection domain.
Claims (9)
1. a kind of memory power-off protection method, it is characterised in that comprise the following steps：
S1：Divide the memory into normal storage region and reserved memory area；
S2：Different activation voltage is distributed for normal storage region and reserved memory area；
S3：When main power source is stopped power supply, cut-in stand-by power supply, activation reserved memory area is started to work；
S4：When main power source restores electricity, the data in reserved memory area are write into normal storage region.
A kind of 2. memory power-off protection method according to claim 1, it is characterised in that：When performing step S2, normally
The activation voltage of storage region is main power voltage.
A kind of 3. memory power-off protection method according to claim 1, it is characterised in that：When performing step S2, reserve
The activation voltage of storage region is backup power source voltage.
A kind of 4. memory power-off protection method according to claim 1, it is characterised in that：When performing step S1, normally
The size that storage region and reserved memory area are deposited is the integral multiple of memory page size in memory.
A kind of 5. memory power-off protection method according to claim 1, it is characterised in that：When performing step S3, reserve
Storage region only writes for data.
A kind of 6. memory power-off protection method according to claim 1, it is characterised in that：When performing step S3, switching
Stand-by power supply, and send alarm to control centre.
A kind of 7. memory power-off protection method according to claim 1, it is characterised in that：It is spare when performing step S4
Power supply is still working in the given time, to reserved memory area in data all write-in normal storage regions after standby electricities
Stop power supply in source.
A kind of 8. memory power-off protection method according to claim 7, it is characterised in that：When performing step S4, preset
The time value that stand-by power supply works after main power source is powered.
A kind of 9. memory power-off protection method according to claim 1, it is characterised in that：, will after performing step S4
Data in reserved memory area are all wiped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442932.1A CN107957922A (en) | 2017-12-27 | 2017-12-27 | A kind of memory power-off protection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711442932.1A CN107957922A (en) | 2017-12-27 | 2017-12-27 | A kind of memory power-off protection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621719A (en) * | 2020-12-11 | 2021-04-09 | 珠海格力电器股份有限公司 | Demonstrator system file protection method and device, storage medium and demonstrator |
| CN113468617A (en) * | 2021-07-16 | 2021-10-01 | 浙江大华技术股份有限公司 | Method, equipment and storage medium for power failure protection of equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040103238A1 (en) * | 2002-11-26 | 2004-05-27 | M-Systems Flash Disk Pioneers Ltd. | Appliance, including a flash memory, that is robust under power failure |
| CN107038131A (en) * | 2016-02-04 | 2017-08-11 | 广明光电股份有限公司 | Solid state hard disc power-off protection apparatus and method |
-
2017
- 2017-12-27 CN CN201711442932.1A patent/CN107957922A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040103238A1 (en) * | 2002-11-26 | 2004-05-27 | M-Systems Flash Disk Pioneers Ltd. | Appliance, including a flash memory, that is robust under power failure |
| CN107038131A (en) * | 2016-02-04 | 2017-08-11 | 广明光电股份有限公司 | Solid state hard disc power-off protection apparatus and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621719A (en) * | 2020-12-11 | 2021-04-09 | 珠海格力电器股份有限公司 | Demonstrator system file protection method and device, storage medium and demonstrator |
| CN113468617A (en) * | 2021-07-16 | 2021-10-01 | 浙江大华技术股份有限公司 | Method, equipment and storage medium for power failure protection of equipment |
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