CN104281505B - Data back up method, device and electronic equipment - Google Patents
Data back up method, device and electronic equipment Download PDFInfo
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- CN104281505B CN104281505B CN201310276421.2A CN201310276421A CN104281505B CN 104281505 B CN104281505 B CN 104281505B CN 201310276421 A CN201310276421 A CN 201310276421A CN 104281505 B CN104281505 B CN 104281505B
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Abstract
The invention discloses a kind of data back up method, device and electronic equipment, belong to field of computer technology.The data back up method includes：Backup reception data signal；The data in predetermined logical address section are backed up according to the data backup signal；Mapping table corresponding to data after backup is backed up, the mapping table includes the corresponding relation between logical block address and preset physical address corresponding to the data after the backup, and the preset physical address includes the combination of physical block address and/or physical block address and predetermined offset；Reach electronic equipment after data backup signal is received, directly the data in predetermined logical address section can be backed up, and the mapping table corresponding to the data after backup is backed up accordingly, without by any auxiliary equipment, go for the effects of all usage scenarios.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of data back up method, device and electronic equipment.
Background technology
Data storage is the most commonly used in such as electronic equipment of mobile phone, tablet personal computer or electronic reader etc and most
For one of important function.However, during user uses electronic equipment, probably due to maloperation or the electronics of user
The equipment infection reason such as virus causes the loss of data in electronic equipment, so now electronic equipment is accomplished by having lost
Data are recovered.
In order to recover to the data lost in electronic equipment, electronic equipment first can be backed up data.
A kind of existing data back up method can include：Electronic equipment is connected by user using data wire with computer；Then electricity is passed through
Backup and Restore software in brain is backed up the data transfer in electronic equipment into computer；Such as, data are used in user
After electronic equipment is connected by line with computer, by softwares such as ' the X beanpods ' installed in computer by the data in electronic equipment
It is transferred in computer and is backed up.
During the present invention is realized, inventor has found prior art, and at least there are the following problems：
When carrying out data backup, electronic equipment is needed by other auxiliary equipments such as computer and data wire；So this is just
The data backup operation when user does not have computer or data wire is caused to realize that existing scheme is not suitable for all applied fields
Scape.
The content of the invention
It can cause electronic equipment when carrying out data backup to solve the data back up method for needing prior art to provide,
Need by other auxiliary equipments such as computer and data wire, be not suitable for all application scenarios the problem of, the embodiment of the present invention is carried
A kind of data back up method, device and electronic equipment are supplied.The technical scheme is as follows：
First aspect is set there is provided a kind of data back up method to contain the electronics for having the storage card mapped using block
In standby, the data back up method includes：
Backup reception data signal；
The data in predetermined logical address section are backed up according to the data backup signal；
Mapping table corresponding to data after backup is backed up, the mapping table includes the data institute after the backup
Corresponding relation between corresponding logical block address and preset physical address, the preset physical address includes physical block address
And/or the combination of physical block address and predetermined offset.
Second aspect is set there is provided a kind of data backup device to contain the electronics for having the storage card mapped using block
In standby, the data backup device, including：
First receiving module, for backup reception data signal；
First backup module, the data backup signal for being received according to first receiving module will be located at pre-
The data determined in logical address section are backed up；
Second backup module, for the mapping table corresponding to the data after backup to be backed up, the mapping table includes
The corresponding relation between logical block address corresponding to data and preset physical address after the backup, the predetermined physical
Location includes the combination of physical block address and/or physical block address and predetermined offset.
The third aspect is there is provided a kind of electronic equipment, and the electronic equipment includes the data backup dress described in second aspect
Put.
The beneficial effect of technical scheme provided in an embodiment of the present invention is：
By backup reception data signal, thus according to data backup signal by positioned at predetermined logical address section in data
Backed up, and the mapping table corresponding to the data after backup is backed up；The data backup of prior art offer is provided
Method can cause electronic equipment when carrying out data backup, it is necessary to by other auxiliary equipments such as computer and data wire, not apply to
The problem of all application scenarios；Electronic equipment has been reached after data backup signal is received, and directly can have been patrolled predetermined
The data collected in address field are backed up, and are accordingly backed up the mapping table corresponding to the data after backup, without
Need by any auxiliary equipment, go for the effect of all usage scenarios.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the method flow diagram for the data back up method that the embodiment of the present invention one is provided；
Fig. 2 is the method flow diagram for the data back up method that the embodiment of the present invention two is provided；
Fig. 3 is a kind of schematic diagram for data merging method that the embodiment of the present invention two is provided；
Fig. 4 is the schematic diagram for another data merging method that the embodiment of the present invention two is provided；
Fig. 5 is the method flow diagram for the data back up method that the embodiment of the present invention three is provided；
Fig. 6 is schematic diagram of the data back up method of the offer of the embodiment of the present invention three when carrying out data recovery；
Fig. 7 is the block diagram for the data backup device that the embodiment of the present invention four is provided；
Fig. 8 is the block diagram for the data backup device that the embodiment of the present invention five is provided；
Fig. 9 is the block diagram for the first backup module that the embodiment of the present invention five is provided；
Figure 10 is another block diagram for the first backup module that the embodiment of the present invention five is provided；
Figure 11 is another block diagram that the embodiment of the present invention five provides data backup device.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step it is described in detail, it is clear that described embodiment is only embodiment of the invention a part of, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
For the ease of description, the relevant knowledge involved by the embodiment of the present invention is described in detail first.
Existing storage card is broadly divided into NAND and XOR two types, wherein, NAND aims at data storage design.One
The storage region of individual NAND storage card can include at least one block, and each block includes at least one page, and block is erasable operation
Minimum unit, page is the minimum unit of read-write operation.In the electronic equipment of storage card of NAND type is included, work as electronics
When equipment needs to be written and read the data in storage card or update operation, electronic equipment need to carry out logic magnetic disc address and
Address of cache between physical disk address.And according to the difference of address mapping granule, address of cache can be divided into page and reflected
Penetrate, block maps and mixed-use developments.Wherein：
Page mapping is the address of cache in units of page, and each logical page (LPAGE) corresponds to a Physical Page, and in internal memory
Middle mapping table of the preservation based on page, so that when electronic equipment needs to read the data stored in storage card, electronic equipment can be with
The data stored in corresponding Physical Page are directly read according to the mapping relations between logical page (LPAGE) and Physical Page；Realized actual
When, the storage card mapped based on page mainly has the storage devices such as solid state hard disc；
Block mapping is the address offset in the address of cache in units of block, logical block and the address offset phase in physical block
Together, and each logical block corresponds to a physical block, block-based mapping table is preserved in internal memory.Specifically, when electronics is set
, it is necessary to which logical address first is converted into logical block address during the data stored in the standby storage card read using block mapping, and
Calculating obtains address offset of the logical address in logical block；Such as, electronic equipment needs the logical address read to be 261,
Each corresponding size of logical address is that the size of each page is 2KB comprising 64 pages in 512B, each logical block；Then electronics
Logical address first can be converted to logical page address LPN=261/4=65 by equipment, and logical page address then is converted into logic
Address offset offset=65%64=1 in block address LBN=65/64=1, and calculating logic block, by above-mentioned conversion
Afterwards, electronic equipment is known that needs read data to first page of the corresponding physical block of logical block 1.Realized actual
When, there are the storage devices such as SD card, mmc card and eMMC cards using the storage card of block mapping table
Mixed-use developments refer in storage card while there is page mapping and block mapping, namely mapping table is simultaneously including based on page
Mapping table and block-based mapping table, specifically refer to above-mentioned two situations, will not be repeated here.
Embodiment one
Fig. 1 is refer to, the method flow diagram of the data back up method provided it illustrates the embodiment of the present invention one, the data
Backup method can be used for including in the electronic equipment using the storage card of block mapping, and the data back up method can include：
Step 101, backup reception data signal；
Step 102, the data in predetermined logical address section are backed up according to data backup signal；
Step 103, the mapping table corresponding to the data after backup is backed up.
Wherein, mapping table includes the correspondence between the logical block address and preset physical address corresponding to the data after backup
Relation, preset physical address includes the combination of physical block address and/or physical block address and predetermined offset.
In summary, the data back up method that the present embodiment is provided, by backup reception data signal, so that according to data
Backup signal is backed up the data in predetermined logical address section, and the mapping table corresponding to the data after backup is entered
Row backup；Solving the data back up method of prior art offer can cause electronic equipment when carrying out data backup, it is necessary to borrow
The problem of helping other auxiliary equipments such as computer and data wire, not being suitable for all application scenarios；Reach electronic equipment in reception
To after data backup signal, directly the data in predetermined logical address section can be backed up, and accordingly will backup
The mapping table corresponding to data afterwards is backed up, without by any auxiliary equipment, go for all use fields
The effect of scape.
Embodiment two
Fig. 2 is refer to, the method flow diagram of the data back up method provided it illustrates the embodiment of the present invention two, the data
Backup method can be used for including in the electronic equipment using the storage card of block mapping, and the data back up method can include：
Step 201, backup reception data signal；
During user uses electronic equipment, during in order to loss of data in the electronic device, recover
Data through loss, user can ask to be backed up some of electronic equipment data, accordingly, and electronic equipment can connect
Receive data backup signal.
Step 202, the data being located under the current backup moment in predetermined logical address section are merged in units of block,
So that the storage region occupied by data after merging is less than the storage region that initially occupies；
Because electronic equipment is when performing data deletion action or data update operation, the storage of storage card can be caused
The data stored in page in region are changed into invalid data, so the memory space of the page in order to discharge the invalid data that is stored with,
After the data backup signal that electronic equipment receives user's input, electronic equipment will can be located in predetermined logical address section
Data merge；However, because in the storage card using block mapping, electronic equipment can only manage block, it is impossible to management
Specific page, so when electronic equipment carries out Data Data merging, electronic equipment will can be located at pre- under the current backup moment
The data determined in logical address section are merged in units of block so that the storage region occupied by data after merging is less than just
Begin the storage region occupied.Specifically, electronic equipment can include the following two kinds implementation the step of carrying out data merging.
In the first possible implementation, electronic equipment will be located in predetermined logical address section under the current backup moment
Data merged in units of block so that the storage region occupied by data after merging is less than the memory block initially occupied
The step of domain, can include：
First, detect predetermined with the presence or absence of meeting first in the storage region occupied by the data in predetermined logical address section
At least two pieces of condition, the first predetermined condition includes being up in a page in the page in same position at least two pieces
The data of storage are valid data；
Because in the storage card using block mapping, the storage size of storage card is all than relatively limited, so being set in electronics
When the standby data carried out to data in units of block merge, electronic equipment selects to meet the first predetermined condition at least as far as possible
Two blocks are merged, so as to reduce the memory space for the additional information brought when data merge.Wherein, the first predetermined condition
Data including being stored in a be up to page in the page in same position at least two pieces are valid data.
Specifically, because the storage card in electronic equipment is to carry out address of cache, electronic equipment by the way of block mapping
Specific page can not be managed, so being typically by the whole at least two pieces in storage card when carrying out data merging
The valid data stored in page, which are merged into same piece, to be stored, so before data merging is carried out, electronic equipment can
Meet the first predetermined condition extremely first to detect to whether there is in the storage region occupied by the data in predetermined logical address section
Few two blocks.
Second, if testing result is the presence of meet the first predetermined condition at least two pieces, it will be deposited at least two pieces
The valid data of storage are incorporated into other pieces and stored so that include at least two pieces of all valid data in other pieces.
If testing result is the presence of meet the first predetermined condition at least two pieces, electronic equipment can be by least two
The valid data stored in individual block are incorporated into other pieces and stored, so that including at least two pieces in other pieces
All valid data.
Such as, electronic equipment, which is detected in the storage region occupied by the data in predetermined logical address section, has two points
Not Wei BLOCK A and BLOCK B data block, stored in only one of which page in the page in same position of the two data blocks
Data be valid data, so now, electronic equipment can be directly by the significant figure that is stored with BLOCK A and BLOCK B
According to page in data be moved in storage region free block BLOCK C and stored, refer to Fig. 3.
It should be noted that there may be the data block of three or more than three when actually realizing, these data blocks
In the data that store are valid data in only one of which page in the page in same position, so now, electronic equipment can divide
The data being stored with the page of valid data in these data blocks are not respectively moved to carry out in the corresponding page of other free blocks
Storage, the present embodiment will not be repeated here.
In second of possible implementation, electronic equipment will be located in predetermined logical address section under the current backup moment
Data merged in units of block so that the storage region occupied by data after merging is less than the memory block initially occupied
The step of domain, can include：
First, detect predetermined with the presence or absence of meeting second in the storage region occupied by the data in predetermined logical address section
At least two pieces of condition；At least two pieces include at least one first kind block and at least one Second Type block, and second is pre-
Each block that fixed condition is included in first kind block is each offset after identical or different predetermined offset and Second Type
It is valid data that each block in block, which compares the data stored in the page in same position in a be up to page,；
In second of possible implementation, due to using block map storage card in, the memory space of storage card
Size is all than relatively limited, so when the data that electronic equipment is carried out to data in units of block merge, electronic equipment is as far as possible
Selection combining when at least two few data blocks of additional information merge, so electronic equipment perform data merge it
Before, whether electronic equipment can be detected stores that to meet second pre- in the storage region occupied by the data in predetermined logical address section
At least two pieces of fixed condition.Wherein, at least two pieces include at least one first kind block and at least one Second Type
Block, each block that the second predetermined condition is included in first kind block each offset after identical or different predetermined offset with
It is valid data that each block in Second Type block, which compares the data stored in the page in same position in a be up to page,.
Second, if testing result is the presence of meet the second predetermined condition at least two pieces, by first kind block
Each block each offsets corresponding predetermined offset；Valid data in first kind block and Second Type block after skew are closed
And to being stored in other pieces so that include at least two pieces of all valid data in other pieces.
If the testing result of electronic equipment is to exist to meet at least two pieces of the second predetermined condition, electronic equipment can be with
Each block in first kind block is each offset into corresponding predetermined offset, and by the first kind block and Equations of The Second Kind after skew
Valid data in type block are incorporated into other pieces and stored, so that including at least two pieces all in other pieces
Valid data.Wherein, predetermined offset be in order that the valid data that store at least two pieces of page can be merged into one
The digit of all pages of collection solid offsettings in data block is stored and caused in individual block.
Such as, electronic equipment detects two data blocks of BLOCK A and BLOCK B, then now electronic equipment can be by
The valid data stored in all pages in BLOCK down offset 5, so that in BLOCK B and the BLOCK A after skew
The data stored in page in same position in only one of which page are valid data, specifically refer to Fig. 4, wherein predetermined migration
Measure as 5, certainly when implementing, still down offset in order to which the page in mark data block is up offset, electronic equipment may be used also
When thinking that the page in predetermined offset setting positive and negative values, such as setting block is up offset, predetermined offset is just；Page in block is past
During lower skew, predetermined offset is negative, and the present embodiment will not be repeated here.
When actually realizing, there may be the data block of three or more than three, wherein, there are one or two data
After the page skew predetermined offset of the valid data that are stored with block, only one of which in the page in same position can be caused
The data stored in page are valid data, then now, and electronic equipment can offset some of these data blocks data block pre-
Determine after offset, be merged into other idle data blocks and stored with the valid data in other data blocks, this implementation
Example will not be repeated here.
Require supplementation with explanation is a little that after electronic equipment data storage is into storage card, electronic equipment can be right
Data in storage region in each page are marked, so that electronic equipment can know that the data stored in which page are
The data stored in valid data, which page are invalid datas；Certainly, when implementing, electronic equipment can also use it
Whether the data that his labeling method to store in the page in mark data block are valid data, and the present embodiment is not limited this
It is fixed.
Requiring supplementation with the second point of explanation is, enters the data in predetermined logical address section in units of block in electronic equipment
After row backup, in order that the data after must backing up are not deleted by user, or returned when not carrying out garbage reclamation by electronic equipment
Receive, the storage region occupied by the data after backup can be set to protection zone by electronic equipment.Wherein protection zone is only
The region being wiped free of is read and forbids, the present embodiment will not be repeated here.
Step 203, the mapping table corresponding to the data after backup is backed up.
In order that the content stored in storage card can be read according to logic magnetic disc address by obtaining electronic equipment, set in electronics
After data in the standby section by predetermined logical address are backed up, electronic equipment can be by the mapping corresponding to the data after backup
Table is backed up.
Specifically, in the first implementation, electronic equipment carries out the mapping table corresponding to the data after backup standby
The step of part, can include：Corresponding relation between logical block address and physical block address corresponding to data after backup is made
Stored for the mapping table corresponding with the data after backup.
Such as, the valid data in BLOCK A and BLOCK B are moved to BLOCK C by electronic equipment when data merge
It is middle to be stored, if the address of logical block corresponding with physical block BLOCK A is X, logical block corresponding with physical block BLOCK B
Address be Y, then now logical block address X and logical block address Y will correspond to physical block BLOCK C simultaneously, namely electronics is set
The mapping table corresponding to data after the backup of backup corresponds to BLOCK C for X, and Y corresponds to BLOCK C.
In second of possible implementation, electronic equipment is backed up the mapping table corresponding to the data after backup
The step of can include：By the logical block address corresponding to the data after backup and physical block address and/or physical block address with
Corresponding relation between the combination of predetermined offset is stored as the mapping table corresponding with the data after backup.
Such as, electronic equipment is when data merge, after the data in BLOCK B are down offset into 5 with BLOCK A
Data be merged into BLOCK and stored, then the address of logical block corresponding with physical block BLOCK A is set as X, with physical block
The address of the corresponding logical blocks of BLOCK B is Y, then now logical block address X corresponds to BLOCK C, and Y pairs of logical block address
Should be in BLOCK C and predetermined offset 5, the present embodiment will not be repeated here.
Specifically, because electronic equipment is when carrying out data backup, the block of the first kind at least two pieces is carried out
Certain skew so that when electronic equipment reads logical address, it is impossible to determine Physical Page to read data according to logical page (LPAGE),
The predetermined offset of first kind block and the combination of physical block address and logical block that electronic equipment will can be set up after skew
Corresponding relation between location, so that using the corresponding relation as the mapping item corresponding to the logical block address, so in electronics
Equipment can be by the corresponding relation between logical block address and physical block address and the combination of predetermined offset and logical block address
One or two the combination in corresponding relation between physical block address is as corresponding with data after backup
Mapping table is stored, and the present embodiment will not be repeated here.
It should be added that, in order to avoid user deletes mapping table corresponding with the data after backup, so that
The data stored in storage card can not be read by obtaining electronic equipment, namely can not realize data recovery, in electronic equipment to backup
After the mapping table corresponding to data afterwards is backed up, electronic equipment can also be by the mapping table corresponding to the data after backup
Occupied region is set to protection zone.Wherein, protection zone is read-only and forbid the region that is wiped free of, and the present embodiment is herein
Repeat no more.Meanwhile, in order to characterize backup after data corresponding to mapping table it is whether effective, electronic equipment can also for mapping
Storage region occupied by table sets flag bit, wherein, flag bit be used to representing the mapping table stored in storage region be it is effective,
The present embodiment is also repeated no more herein.
Requiring supplementation with the second point of explanation is, when actually realizing, user can ask to carry out twice or more than twice
Backup, accordingly, electronic equipment can receive two or more data backup signal, then now in storage card
There may be the data after two or more backup and the mapping table corresponding to the data after each backup, to this
The present embodiment is repeated no more.
In summary, the data back up method that the present embodiment is provided, by backup reception data signal, so that according to data
Backup signal is backed up the data in predetermined logical address section, and the mapping table corresponding to the data after backup is entered
Row backup；Solving the data back up method of prior art offer can cause electronic equipment when carrying out data backup, it is necessary to borrow
The problem of helping other auxiliary equipments such as computer and data wire, not being suitable for all application scenarios；Reach electronic equipment in reception
To after data backup signal, directly the data in predetermined logical address section can be backed up, and accordingly will backup
The mapping table corresponding to data afterwards is backed up, without by any auxiliary equipment, go for all use fields
The effect of scape.
Embodiment three
Fig. 5 is refer to, the method flow diagram of the data back up method provided it illustrates the embodiment of the present invention three, the data
Backup method can be used for including in the electronic equipment using the storage card of block mapping, and the data back up method can include：
Step 301, backup reception data signal；
During user uses electronic equipment, during in order to loss of data in the electronic device, recover
Data through loss, user can ask to be backed up some of electronic equipment data, accordingly, and electronic equipment can connect
Receive data backup signal.
Step 302, the data being located under the current backup moment in predetermined logical address section are carried out in units of block
Merge so that the storage region occupied by data after merging is less than the storage region initially occupied；
Because electronic equipment is when performing deletion action or data update operation, the storage region of storage card can be caused
In page in the data that store be changed into invalid data, so the memory space of the page in order to discharge the invalid data that is stored with,
Electronic equipment is received after the data backup signal of user's input, and electronic equipment can be by predetermined logical address section
Data are merged；However, because in the storage card using block mapping, electronic equipment can only manage block, it is impossible to the tool of management
The page of body, so when electronic equipment carries out Data Data merging, electronic equipment will can be located at predetermined under the current backup moment
Data in logical address section are merged in units of block so that the storage region occupied by data after merging is less than initial
The storage region occupied.Specifically, electronic equipment can include the following two kinds implementation the step of carrying out data merging.
In the first possible implementation, electronic equipment will be located in predetermined logical address section under the current backup moment
Data merged in units of block so that the storage region occupied by data after merging is less than the memory block initially occupied
The step of domain, can include：
First, detect predetermined with the presence or absence of meeting first in the storage region occupied by the data in predetermined logical address section
At least two pieces of condition, the first predetermined condition includes being up in a page in the page in same position at least two pieces
The data of storage are valid data；
Second, if testing result is the presence of meet the first predetermined condition at least two pieces, it will be deposited at least two pieces
The valid data of storage are incorporated into other pieces and stored so that include at least two pieces of all valid data in other pieces.
It should be noted that this is similar with the first possible implementation in the step 202 of embodiment two, detailed skill
Art detail with reference embodiment two, the present embodiment will not be repeated here.
In second of possible implementation, electronic equipment will be located in predetermined logical address section under the current backup moment
Data merged in units of block so that the storage region occupied by data after merging is less than the memory block initially occupied
The step of domain, can include：
First, detect predetermined with the presence or absence of meeting second in the storage region occupied by the data in predetermined logical address section
At least two pieces of condition；At least two pieces include at least one first kind block and at least one Second Type block, and second is pre-
Each block that fixed condition is included in first kind block is each offset after identical or different predetermined offset and Second Type
It is valid data that each block in block, which compares the data stored in the page in same position in a be up to page,；
Second, if testing result is the presence of meet the second predetermined condition at least two pieces, by first kind block
Each block each offsets corresponding predetermined offset；Valid data in first kind block and Second Type block after skew are closed
And to being stored in other pieces so that include at least two pieces of all valid data in other pieces.
It should be noted that this is similar with second of possible implementation in the step 202 of embodiment two, detailed skill
Art detail with reference embodiment two, the present embodiment will not be repeated here.
Require supplementation with explanation is a little that after electronic equipment data storage is into storage card, electronic equipment can be right
Data in storage region in each page are marked, so that electronic equipment can know that the data stored in which page are
The data stored in valid data, which page are invalid datas；Certainly, when implementing, electronic equipment can also use it
Whether the data that his labeling method to store in the page in mark data block are valid data, and the present embodiment is not limited this
It is fixed.
Requiring supplementation with the second point of explanation is, enters the data in predetermined logical address section in units of block in electronic equipment
After row backup, in order that the data after must backing up are not deleted by user, or returned when not carrying out garbage reclamation by electronic equipment
Receive, the storage region occupied by the data after backup can be set to protection zone by electronic equipment.Wherein protection zone is only
The region being wiped free of is read and forbids, the present embodiment will not be repeated here.
Step 303, the mapping table corresponding to the data after backup is backed up；
In order that the content stored in storage card can be read according to logic magnetic disc address by obtaining electronic equipment, set in electronics
After data in the standby section by predetermined logical address are backed up, electronic equipment can be by the mapping corresponding to the data after backup
Table is backed up.
Specifically, in the first implementation, electronic equipment carries out the mapping table corresponding to the data after backup standby
The step of part, can include：Corresponding relation between logical block address and physical block address corresponding to data after backup is made
Stored for the mapping table corresponding with the data after backup.
In second of possible implementation, electronic equipment is backed up the mapping table corresponding to the data after backup
The step of can include：By the logical block address corresponding to the data after backup and physical block address and/or physical block address with
Corresponding relation between the combination of predetermined offset is stored as the mapping table corresponding with the data after backup.
Require supplementation with explanation is a little that this step is similar with the step 203 in embodiment two, and detailed technology details please join
Embodiment two is examined, the present embodiment will not be repeated here.
Require supplementation with explanation on the other hand, in order to avoid user deletes mapping table corresponding with the data after backup,
So that electronic equipment can not read the data stored in storage card, namely data recovery can not be realized, in electronic equipment
After being backed up to the mapping table corresponding to the data after backup, electronic equipment can also be by corresponding to the data after backup
Region occupied by mapping table is set to protection zone.Wherein, protection zone is read-only and forbid the region that is wiped free of, this implementation
Example will not be repeated here.Meanwhile, whether effective in order to characterize mapping table corresponding to the data after backup, electronic equipment can be with
For the storage region occupied by mapping table, flag bit is set, wherein, flag bit is used for the mapping table for representing to store in storage region
To be effective, the present embodiment is also repeated no more herein.
Step 304, data recovery signal is received；
After electronic equipment is to the data backup in storage card, when user needs to carry out data recovery signal, user
Input data it can recover signal in the electronic device, accordingly, electronic equipment can receive data recovery signal.In reality
When realizing, electronic equipment can enter rebooting status after data recovery signal is received, and the present embodiment is not limited this
It is fixed, and the present embodiment is so that electronic equipment is restarted as an example.
It should be added that, the data stored in electronic equipment is to storage card have carried out twice or repeatedly standby
Data after part, namely backup and the mapping table corresponding to the data after backup have two groups or more than two, every group of backup
When data and mapping table afterwards correspond to different backup times, the step of electronic equipment receives data recovery signal can wrap
Include：
First, receive the selection letter for selecting a backup time in two or more backup time
Number；
User can select to recover to during two or more backup when carrying out data recovery to electronic equipment
The state corresponding to data after the backup of any one backup time in quarter, so now, electronic equipment, which can be received, to be used for
The selection signal of a backup time is selected in two or more backup time.
Second, mapping table corresponding with the backup time selected is set to effectively, and effective mapping will be set to
Table is used as data recovery signal；
After electronic equipment receives selection signal, electronic equipment can reflect corresponding with the backup time selected
Firing table is set to effectively, so that effective mapping table will be set to as data recovery signal.
Step 305, according to the mapping table stored in data recovery signal-obtaining storage card；
When electronic equipment starts to restart, electronic equipment can be according to reflecting for being stored in data recovery signal-obtaining storage card
Firing table.This is that is, after electronic equipment receives data recovery signal, and electronic equipment will can be stored in storage card
Mapping table is set to run mode, and the mapping table for being in run mode before is deleted or preserved, so that in electronic equipment
When restarting, electronic equipment can read the mapping table of the data corresponded to after backup in run mode.
It should be added that, when the data recovery signal that electronic equipment is received be by with the backup time selected
During signal when the flag bit of corresponding mapping table is set to effective, electronic equipment, which can be read in storage card, to be arranged to have
Mapping table corresponding to the flag bit of effect, the present embodiment is repeated no more to this.
Step 306, the data after backup are read according to mapping table；
Because electronic equipment is during restarting, electronic equipment can read corresponding data, electronics in logical address
Equipment can be converted to logical address logical block address and the address offset in logical block, and be stored with and patrol in storage card
Collect the corresponding relation and logical block address between block address and physical block address and the combination of physical block address and predetermined offset
Between at least one of corresponding relation, so after electronic equipment reads mapping table, electronic equipment can read and deposit
Data after the backup stored in card storage.
Such as, the mapping table backed up using electronic equipment corresponds to BLOCK C (list item 1), and logic as logical block address X
Block address Y corresponds to BLOCK C and predetermined offset 5 (list item 2), then when electronic equipment reads logical address block X, electricity
Sub- equipment can read the data in physical block BLOCK C according to the situation of the valid data stored in BLOCK A；Set in electronics
Standby when reading logical address Y, electronic equipment can be according to the situation and predetermined migration of the valid data stored in BLOCK B
Amount reads the data read in physical block BLOCK C, specifically refer to Fig. 6.
Step 307, the data after the backup that loading is read.
After the data that electronic equipment reads after backup, electronic equipment can load the number after the backup read
According to so as to realize data recovery.
In summary, the data back up method that the present embodiment is provided, by backup reception data signal, so that according to data
Backup signal is backed up the data in predetermined logical address section, and the mapping table corresponding to the data after backup is entered
Row backup；Solving the data back up method of prior art offer can cause electronic equipment when carrying out data backup, it is necessary to borrow
The problem of helping other auxiliary equipments such as computer and data wire, not being suitable for all application scenarios；Reach electronic equipment in reception
To after data backup signal, directly the data in predetermined logical address section can be backed up, and accordingly will backup
The mapping table corresponding to data afterwards is backed up, without by any auxiliary equipment, go for all use fields
The effect of scape.In the present embodiment, after the electronic equipment backup mapping table corresponding with the data after backup simultaneously, electronics
Equipment receives data recovery signal, and according to data recovery signal-obtaining mapping table so as to read and load the number after backup
According to, reached that electronic equipment carries out data recovery in the case of can not needing auxiliary equipment, so as to suitable for it is all should
With the effect of scene.
It should be added that, the present embodiment is simply the electronics for including the storage card mapped using block with electronic equipment
Exemplified by equipment, when actually realizing, electronic equipment can also be comprising using this reality of the electronic equipment of storage card of mixed-use developments
Example is applied not limit this.
Example IV
Fig. 7 is refer to, the block diagram for the data backup device being to provide it illustrates the embodiment of the present invention, the data
Back-up device can be used for including in the electronic equipment using the storage card of block mapping, and the data backup device can lead to
That crosses software, hardware or both is implemented in combination with all or part of as electronic equipment, and the data backup device can be wrapped
Include：First receiving module 410, the first backup module 420 and the second backup module 430；
First receiving module 410, for backup reception data signal；
First backup module 420, the data backup signal for being received according to first receiving module 410 will
Data in predetermined logical address section are backed up；
Second backup module 430, for the mapping table corresponding to the data after backup to be backed up, the mapping table bag
Include the corresponding relation between the logical block address and preset physical address corresponding to the data after the backup, the predetermined physical
Address includes the combination of physical block address and/or physical block address and predetermined offset.
In summary, the data backup device that the present embodiment is provided, by backup reception data signal, so that according to data
Backup signal is backed up the data in predetermined logical address section, and the mapping table corresponding to the data after backup is entered
Row backup；Solving the data back up method of prior art offer can cause electronic equipment when carrying out data backup, it is necessary to borrow
The problem of helping other auxiliary equipments such as computer and data wire, not being suitable for all application scenarios；Reach electronic equipment in reception
To after data backup signal, directly the data in predetermined logical address section can be backed up, and accordingly will backup
The mapping table corresponding to data afterwards is backed up, without by any auxiliary equipment, go for all use fields
The effect of scape.
Embodiment five
Fig. 8 is refer to, the block diagram of the data backup device provided it illustrates the embodiment of the present invention five, the data
Back-up device can be used for including in the electronic equipment using the storage card of block mapping, and the data backup device can lead to
That crosses software, hardware or both is implemented in combination with all or part of as electronic equipment, and the data backup device can be wrapped
Include：First receiving module 410, the first backup module 420 and the second backup module 430；
First receiving module 410, for backup reception data signal；
First backup module 420, the data backup signal for being received according to first receiving module 410 will
Data in predetermined logical address section are backed up；
Second backup module 430, for the mapping table corresponding to the data after backup to be backed up, the mapping table bag
Include the corresponding relation between the logical block address and preset physical address corresponding to the data after the backup, the predetermined physical
Address includes the combination of physical block address and/or physical block address and predetermined offset.
Preferably, the storage region of the storage card includes at least one block,
First backup module 420, is additionally operable under the current backup moment to be located in predetermined logical address section
Data are merged in units of block so that the storage region occupied by data after merging is less than the memory block initially occupied
Domain.
Preferably, each block that refer in Fig. 9, the storage region includes at least one page, the first backup mould
Block 420, including：First detection unit 421 and the first backup units 422；
First detection unit 421, for detecting in the storage region occupied by the data in the predetermined logical address section
With the presence or absence of meeting at least two pieces of the first predetermined condition, first predetermined condition includes being in described at least two pieces
It is valid data that the data stored in a page are up in the page of same position；
First backup units 422, if the testing result for first detection unit 421 is to exist to meet described first
At least two pieces of predetermined condition, then be incorporated into other pieces by the valid data stored in described at least two pieces and stored,
So that including described at least two pieces of all valid data in described other pieces.
Preferably, second backup module 430, is additionally operable to the logical block address and thing corresponding to the data after backup
Corresponding relation between reason block address is stored as the mapping table corresponding with the data after the backup.
Preferably, each block that refer in Figure 10, the storage region includes at least one page, the first backup mould
Block 420, including：Second detection unit 423 and the second backup units 424；
Second detection unit 423, for detecting in the storage region occupied by the data in the predetermined logical address section
With the presence or absence of meeting at least two pieces of the second predetermined condition；Described at least two pieces include at least one first kind block and extremely
A few Second Type block, each block that second predetermined condition is included in the first kind block each offset it is identical or
It is up to a page after different predetermined offsets in the page in same position compared with each block in Second Type block
The data of middle storage are valid data；
Second backup units 424, if the testing result for second detection unit 423 is to exist to meet described second
At least two pieces of predetermined condition, then each offset corresponding predetermined offset by each block in the first kind block；Will
The valid data in the first kind block and the Second Type block after skew, which are incorporated into other pieces, to be stored so that
Include described at least two pieces of all valid data in described other pieces.
Preferably, second backup module 430, is additionally operable to the logical block address and thing corresponding to the data after backup
Manage corresponding relation between block address and/or physical block address and the combination of predetermined offset as with the data after the backup
Corresponding mapping table is stored.
Preferably, the data backup device, in addition to：
First setting module 440, for the storage region occupied by the data after the backup to be set into protection zone,
The protection zone is read-only and forbid the region that is wiped free of.
Preferably, the data backup device, in addition to：
Second setting module 450, for the storage region occupied by the mapping table to be set into protection zone, the guarantor
Shield region is read-only and forbid the region that is wiped free of；
3rd setting module 460, for setting flag bit, the flag bit for the storage region occupied by the mapping table
For representing whether the mapping table stored in the storage region is effective.
Preferably, Figure 11 is refer to, described device also includes：
Second receiving module 470, for receiving data recovery signal；
First read module 480, the data recovery signal for being received according to second receiving module 470 is read
Take the mapping table stored in the storage card；
Second read module 490, described in the mapping table for being read according to first read module 480 is read
Data after backup；
Data load-on module 500, for loading the data after the backup that second reading, 490 modules are read.
Preferably, the data after the backup and the mapping table corresponding to the data after the backup have two groups or two
More than group, data and the mapping table after being backed up described in every group correspond to different backup times, second receiving module
470, including：Signal receiving unit 471 and information setting unit 472；
Signal receiving unit 471, is used to select one in two or more backup time for receiving
The selection signal of backup time；
Information setting unit 472, for mapping table corresponding with the backup time selected to be set to effectively, and will set
Effective mapping table is set to as the data recovery signal；
Accordingly, first read module 480, is additionally operable to read in the storage card and is arranged to effective mapping
Table.
In summary, the data backup device that the present embodiment is provided, by backup reception data signal, so that according to data
Backup signal is backed up the data in predetermined logical address section, and the mapping table corresponding to the data after backup is entered
Row backup；Solving the data back up method of prior art offer can cause electronic equipment when carrying out data backup, it is necessary to borrow
The problem of helping other auxiliary equipments such as computer and data wire, not being suitable for all application scenarios；Reach electronic equipment in reception
To after data backup signal, directly the data in predetermined logical address section can be backed up, and accordingly will backup
The mapping table corresponding to data afterwards is backed up, without by any auxiliary equipment, go for all use fields
The effect of scape.
It should be noted that：The data backup device that above-described embodiment is provided is when carrying out data backup, only with above-mentioned each
The division progress of functional module is for example, in practical application, as needed can distribute above-mentioned functions by different work(
Energy module is completed, i.e., the internal structure of equipment is divided into different functional modules, to complete whole described above or portion
Divide function.In addition, data backup device and the embodiment of the method for data back up method that above-described embodiment is provided belong to same structure
Think, it implements process and refer to embodiment of the method, repeats no more here.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can be by hardware
To complete, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (19)
1. a kind of data back up method, it is characterised in that to contain in the electronic equipment for having the storage card mapped using block, institute
The method of stating includes：
Backup reception data signal；
The data in predetermined logical address section are backed up according to the data backup signal；
Mapping table corresponding to data after backup is backed up, the mapping table is included corresponding to the data after the backup
Logical block address and preset physical address between corresponding relation, the preset physical address include physical block address and/or
The combination of physical block address and predetermined offset；
The storage region of the storage card includes at least one block, described to be located at predetermined logic according to the data backup signal
Data in address field are backed up, including：
The data being located under the current backup moment in predetermined logical address section are merged in units of block so that merge
The storage region occupied by data afterwards is less than the storage region initially occupied.
2. data back up method according to claim 1, it is characterised in that each block in the storage region is included extremely
A few page, the data being located under the moment by current backup in predetermined logical address section are closed in units of block
And, including：
Detect to whether there is in the storage region occupied by the data in the predetermined logical address section and meet the first predetermined condition
At least two pieces, first predetermined condition include described at least two pieces in same position page in be up to one
The data stored in page are valid data；
If testing result is the presence of meet first predetermined condition at least two pieces, it will be stored in described at least two pieces
Valid data be incorporated into other pieces and stored so that include in described other pieces described at least two pieces it is all effectively
Data.
3. data back up method according to claim 2, it is characterised in that reflecting corresponding to the data by after backup
Firing table is backed up, including：
Using the corresponding relation between the logical block address and physical block address corresponding to the data after backup as with the backup
The corresponding mapping table of rear data is stored.
4. data back up method according to claim 1, it is characterised in that each block in the storage region is included extremely
A few page, the data being located under the moment by current backup in predetermined logical address section are closed in units of block
And, including：
Detect to whether there is in the storage region occupied by the data in the predetermined logical address section and meet the second predetermined condition
At least two pieces；Described at least two pieces include at least one first kind block and at least one Second Type block, and described the
Each block that two predetermined conditions are included in the first kind block each offset after identical or different predetermined offset with
It is valid data that each block in Second Type block, which compares the data stored in the page in same position in a be up to page,；
If testing result is the presence of meet second predetermined condition at least two pieces, will be every in the first kind block
Individual block each offsets corresponding predetermined offset；Will be effective in the first kind block and the Second Type block after skew
Data are incorporated into other pieces and stored so that include described at least two pieces of all significant figures in described other pieces
According to.
5. data back up method according to claim 4, it is characterised in that reflecting corresponding to the data by after backup
Firing table is backed up, including：
By the logical block address corresponding to the data after backup and physical block address and/or physical block address and predetermined offset
Corresponding relation between combination is stored as the mapping table corresponding with the data after the backup.
6. according to any described data back up method of claim 1 to 5, it is characterised in that described according to the data backup
After signal is backed up the data in predetermined logical address section, methods described also includes：
Storage region occupied by data after the backup is set to protection zone, the protection zone is read-only and forbidden
The region being wiped free of.
7. according to any described data back up method of claim 1 to 5, it is characterised in that the data institute by after backup
After corresponding mapping table is backed up, methods described also includes：
Storage region occupied by the mapping table is set to protection zone, the protection zone is read-only and forbids being wiped free of
Region；
Flag bit is set for the storage region occupied by the mapping table, the flag bit is used to represent to deposit in the storage region
Whether the mapping table of storage is effective.
8. according to any described data back up method of claim 1 to 5, it is characterised in that the data institute by after backup
After corresponding mapping table is backed up, methods described also includes：
Receive data recovery signal；
The mapping table stored in the storage card according to the data recovery signal-obtaining；
Data after the backup are read according to the mapping table；
Load the data after the backup read.
9. data back up method according to claim 8, it is characterised in that data and the backup after the backup
The mapping table corresponding to data afterwards has multigroup, and the data and the mapping table after being backed up described in every group correspond to different backups
Moment, the reception data recovery signal, including：
Receive the selection signal for selecting a backup time in multiple backup times；
Mapping table corresponding with the backup time selected is set to effectively, and effective mapping table will be set to as described
Data recovery signal；
The mapping table stored in the storage card according to the data recovery signal-obtaining, including：
Read and be arranged to effective mapping table in the storage card.
10. a kind of data backup device, it is characterised in that to contain in the electronic equipment for having the storage card mapped using block,
Described device includes：
First receiving module, for backup reception data signal；
First backup module, the data backup signal for being received according to first receiving module will be located at predetermined patrol
The data collected in address field are backed up；
Second backup module, for the mapping table corresponding to the data after backup to be backed up, the mapping table includes described
The corresponding relation between logical block address corresponding to data and preset physical address after backup, the preset physical address bag
Include the combination of physical block address and/or physical block address and predetermined offset；
The storage region of the storage card includes at least one block, and first backup module was additionally operable to the current backup moment
The data being located at down in predetermined logical address section are merged in units of block so that depositing occupied by the data after merging
Storage area domain is less than the storage region initially occupied.
11. data backup device according to claim 10, it is characterised in that each block in the storage region includes
At least one page, first backup module, including：
First detection unit, whether there is for detecting in the storage region occupied by the data in the predetermined logical address section
Meet at least two pieces of the first predetermined condition, first predetermined condition includes being in same position in described at least two pieces
Page in the data that be up to store in a page be valid data；
First backup units, if the testing result for first detection unit is to exist to meet first predetermined condition
At least two pieces, then the valid data stored in described at least two pieces are incorporated into other pieces and stored so that it is described its
Include described at least two pieces of all valid data in its block.
12. data backup device according to claim 11, it is characterised in that
Second backup module, is additionally operable between the logical block address and physical block address corresponding to the data after backup
Corresponding relation is stored as the mapping table corresponding with the data after the backup.
13. data backup device according to claim 10, it is characterised in that each block in the storage region includes
At least one page, first backup module, including：
Second detection unit, whether there is for detecting in the storage region occupied by the data in the predetermined logical address section
Meet at least two pieces of the second predetermined condition；Described at least two pieces include at least one first kind block and at least one the
Two type blocks, each block that second predetermined condition is included in the first kind block each offsets identical or different pre-
Determine to be up to what is stored in a page in the page in same position compared with each block in Second Type block after offset
Data are valid data；
Second backup units, if the testing result for second detection unit is to exist to meet second predetermined condition
At least two pieces, then each block in the first kind block is each offset into corresponding predetermined offset；By the institute after skew
State the valid data in first kind block and the Second Type block and be incorporated into other pieces and stored so that described other pieces
In include described at least two pieces of all valid data.
14. data backup device according to claim 13, it is characterised in that
Second backup module, be additionally operable to the logical block address corresponding to the data after backup and physical block address and/or
Corresponding relation between physical block address and the combination of predetermined offset is used as the mapping corresponding with data after the backup
Table is stored.
15. according to any described data backup device of claim 10 to 14, it is characterised in that the data backup device,
Also include：
First setting module, for the storage region occupied by the data after the backup to be set into protection zone, the guarantor
Shield region is read-only and forbid the region that is wiped free of.
16. according to any described data backup device of claim 10 to 14, it is characterised in that the data backup device,
Also include：
Second setting module, for the storage region occupied by the mapping table to be set into protection zone, the protection zone
To be read-only and forbid the region that is wiped free of；
3rd setting module, for setting flag bit for the storage region occupied by the mapping table, the flag bit is used for table
Show whether the mapping table stored in the storage region is effective.
17. according to any described data backup device of claim 10 to 14, it is characterised in that described device also includes：
Second receiving module, for receiving data recovery signal；
First read module, for being stored according to the data recovery signal-obtaining that second receiving module is received
The mapping table stored in card；
Second read module, the mapping table for being read according to first read module reads the number after the backup
According to；
Data load-on module, for loading the data after the backup that second read module is read.
18. data backup device according to claim 17, it is characterised in that data after the backup and described standby
The mapping table corresponding to data after part has multigroup, and the data and the mapping table after being backed up described in every group correspond to different standby
Part moment, second receiving module, including：
Signal receiving unit, for receiving the selection signal for being used for that a backup time to be selected in multiple backup times；
Information setting unit, for mapping table corresponding with the backup time selected to be set to effectively, and will be provided with
The mapping table of effect is used as the data recovery signal；
Accordingly, first read module, is additionally operable to read and is arranged to effective mapping table in the storage card.
19. a kind of electronic equipment, it is characterised in that it includes the data backup device as described in claim 10 to 18 is any.
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| CN105959596A (en) * | 2016-05-24 | 2016-09-21 | 深圳市华泰敏信息技术有限公司 | Backup method and device of video source |
| CN109189345B (en) * | 2018-09-18 | 2022-03-04 | 郑州云海信息技术有限公司 | Online data sorting method, device, equipment and storage medium |
| CN110187999B (en) * | 2019-05-09 | 2021-04-27 | 新华三技术有限公司 | Address mapping data backup method and device |
| CN111328257B (en) * | 2020-03-11 | 2022-03-22 | 广东省电信规划设计院有限公司 | Data synchronization method and device for upper computer and lower computer |
| CN116069678A (en) * | 2021-10-29 | 2023-05-05 | 华为技术有限公司 | Data processing method and related device |
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| CN101436152A (en) * | 2008-12-02 | 2009-05-20 | 成都市华为赛门铁克科技有限公司 | Method and device for data backup |
| CN102693173A (en) * | 2012-05-15 | 2012-09-26 | 记忆科技(深圳)有限公司 | File processing method based on snapshot and solid state disk with snapshot function |
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| JP5346536B2 (en) * | 2008-10-02 | 2013-11-20 | 株式会社日立ソリューションズ | Information backup / restore processing device and information backup / restore processing system |
| CN102541676B (en) * | 2011-12-22 | 2014-03-05 | 福建新大陆通信科技股份有限公司 | Method for detecting and mapping states of NAND FLASH |
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| CN101436152A (en) * | 2008-12-02 | 2009-05-20 | 成都市华为赛门铁克科技有限公司 | Method and device for data backup |
| CN102693173A (en) * | 2012-05-15 | 2012-09-26 | 记忆科技(深圳)有限公司 | File processing method based on snapshot and solid state disk with snapshot function |
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