CN104637510A - External storage device and data storage method thereof - Google Patents
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- CN104637510A CN104637510A CN201310562261.8A CN201310562261A CN104637510A CN 104637510 A CN104637510 A CN 104637510A CN 201310562261 A CN201310562261 A CN 201310562261A CN 104637510 A CN104637510 A CN 104637510A
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Abstract
The invention discloses an external storage device and a data storage method thereof. The external storage device is provided with at least one mechanical hard drive and at least one nonvolatile storage device. The mechanical hard drives and the nonvolatile storage devices are integrated into storage media by system bottom driving logic, and the external storage device measures environment temperature and continuously measures and records whether to vibrate or not according to time continuation and stores data optionally to the mechanical hard drives or the nonvolatile storage devices according to judgment results of temperature and vibration. Therefore, the technical effect that the mechanical hard drives for storing data in continual vibration and unstable operating temperature are avoided in the mobile environment can be achieved.
Description
Technical field
The present invention relates to the date storage method of a kind of external storage device and external storage device, refer in particular to and a kind ofly drive logic integration to be that external storage device is considered as the external storage device of single Storage Media and the date storage method of external storage device to be supplied to peripheral operation system by Storage Media by system bottom mechanical type hard disk and nonvolatile memory.
Background technology
The Storage Media carrying out Large Copacity storage is generally needed to be generally by mechanical type hard disk (hard disk drive, HDD) storage of data is carried out, but mechanical type hard disk but has for the restriction in vibrations and operational temperature, when data run into vibrations in read-write process, light then cause the damage of magnetic region to cause Missing data, heavy then cause the damage of read/write head cannot normal operation to cause that mechanical type hard disk is whole, in addition when mechanical type hard disk exceeds normal operating temperature range, also element fault cannot normal operation to cause that mechanical type hard disk is whole in mechanical type hard disk even to cause in mechanical type disk read-write process Missing data.
In view of this, then propose nonvolatile memory to use and improve mechanical type hard disk and be given a shock and restriction in operational temperature, but nonvolatile memory is then the restriction having storage volume, that is the storable capacity of single nonvolatile memory is fixing, when the more multiple nonvolatile memory of use then can expand storable capacity, comparatively speaking, compared with coming with nonvolatile memory with the mechanical type hard disk of same stored capacity, it is many that namely the cost of nonvolatile memory exceeds mechanical type hard disk, therefore nonvolatile memory is not suitable for jumbo data storing.
But in a mobile environment, when needs carry out jumbo data storing, then nonvolatile memory cannot be paid the utmost attention to, still need to use mechanical type hard disk, but how in a mobile environment the situation of continuous vibrations and operational temperature instability, the storage using mechanical type hard disk to carry out data is then the problem needing to overcome and solve.
In sum, the situation that always there is constantly vibrations and operational temperature instability in a mobile environment since known prior art is medium-term and long-term uses mechanical type hard disk to carry out the problem of data storage, therefore be necessary the technological means proposing to improve, solve this problem.
Summary of the invention
Because the situation that prior art also exists constantly vibrations and operational temperature instability in a mobile environment uses mechanical type hard disk to carry out the problem of data storage, the present invention discloses a kind of external storage device and date storage method thereof then, wherein:
External storage device disclosed by the present invention, it comprises: at least one mechanical type hard disk, at least one nonvolatile memory, measurement module, request module, judge module and integration and storage module.
Measurement module is in order to measure environment temperature by temperature-sensitive sticker, and when the speed measured according to three axle gravity sensors and displacement are more than or equal to preset value, then record produces vibrations, and produces according to time remaining record and whether shake.
Request module is in order to from peripheral operation system receives data store request.
When judge module is in order to receive data storing request when request module, judge whether environment temperature is more than or equal to preset temperature, and in Preset Time, judge whether the total degree shaken is greater than 0.
Integrating with storage module is in order to drive logic integration to be single Storage Media by system bottom at least one mechanical type hard disk and at least one nonvolatile memory, and according to the judged result of judge module to temperature and vibrations, data are stored in a selective way at least one mechanical type hard disk and at least one nonvolatile memory.
The date storage method of the external storage device disclosed by the present invention, it comprises the following step:
First, provide the external storage device with at least one mechanical type hard disk and at least one nonvolatile memory, external storage device is at least one drives logic integration to be single Storage Media by system bottom mechanical type hard disk and at least one nonvolatile memory; Then, external storage device measures environment temperature by temperature-sensitive sticker, and when the speed measured according to three axle gravity sensors and displacement are more than or equal to preset value, then record produces vibrations, and produces according to time remaining record and whether shake; Then, external storage device is from peripheral operation system receives data store request; Then, external storage device, when receiving data storing request, judges whether environment temperature is more than or equal to preset temperature, and in Preset Time, judge whether the total degree shaken is greater than 0; Finally, data, according to the judged result to temperature and vibrations, are stored at least one mechanical type hard disk or at least one nonvolatile memory by external storage device in a selective way.
Device disclosed by the present invention and date storage method are as above, and the difference between prior art is the invention provides the external storage device with at least one mechanical type hard disk and at least one nonvolatile memory, logic integration is driven to be Storage Media by system bottom mechanical type hard disk and nonvolatile memory, external storage device measures environment temperature and measures according to time remaining and record to produce and whether shakes, external storage device can according to the judged result to temperature and vibrations, data are stored to mechanical type hard disk or nonvolatile memory in a selective way.
By above-mentioned technological means, the present invention can reach to provide when avoiding constantly vibrations and operational temperature instability in a mobile environment and use mechanical type hard disk to carry out technology effect of data storage.
Accompanying drawing explanation
Fig. 1 illustrates the apparatus module block schematic diagram into external storage device of the present invention.
Fig. 2 A and Fig. 2 B illustrates the date storage method process flow diagram into external storage device of the present invention.
Fig. 3 illustrates as the Storage Media of external storage device of the present invention, mechanical type hard disk and nonvolatile memory mapping framework schematic diagram.
Fig. 4 illustrates as the present invention is adopted hybrid hash algorithm schematic diagram.
[symbol description]
10 external storage devices
11 mechanical type hard disks
111 first mechanical type hard disks
112 second mechanical type hard disks
12 nonvolatile memories
121 first nonvolatile memories
122 second nonvolatile memories
13 measurement modules
14 request module
15 judge modules
16 integrate and storage module
20 Storage Medias
30 mapping tables
Embodiment
Graphic and embodiment below will be coordinated to describe embodiments of the present invention in detail, by this to the present invention how application technology means solve technical matters and the implementation procedure reaching technology effect can fully understand and implement according to this.
First external storage device disclosed by the present invention below will be described, and please refer to shown in " Fig. 1 ", " Fig. 2 A " and " Fig. 2 B ", " Fig. 1 " illustrates the apparatus module block schematic diagram into external storage device of the present invention; " Fig. 2 A " and " Fig. 2 B " illustrates the date storage method process flow diagram into external storage device of the present invention.
External storage device 10 disclosed by the present invention, it comprises: at least one mechanical type hard disk 11, at least one nonvolatile memory 12, measurement module 13, request module 14, judge module 15 and integration and storage module 16.
Mechanical type hard disk 11 i.e. general alleged hard disk (hard disk drive, HDD) be computing machine uses the non-volatile storage based on hard rotating compact disc, it is in smooth magnetic surface storage and retrieval numerical data, information by from magnetic surface very close to magnetic head, changing polarity mode by electromagnetic current is write on magnetic disc by electromagnetic current, information can be read by contrary mode, and such as magnetic field causes the change of electric power in coil or read head to pass through its top.The read-write of hard disk adopts random-access mode, therefore can read the data in hard disk with random order.
Nonvolatile memory 12(non-volatile memory, NVRAM) refer to when power supply is no longer powered, stored data can not the calculator memory of the person of disappearance.In nonvolatile memory, whether standard can be rewritten as at any time in use according to the data in internal memory, two large series products can be divided into, i.e. read-only memory (Read-Only Memory, and flash memory (Flash Memory) ROM), nonvolatile memory 12 of the present invention refers to flash memory especially, and the NAND Flash in flash memory is modal nonvolatile memory, and NAND Flash is solid state hard disc (Solid-State Disk, SSD) the main flash memory used, that is nonvolatile memory 12 of the present invention can be solid state hard disc, be only at this and illustrate it, application category of the present invention is not limited to this.
Integrate with storage module 16 is adopts the Disk Mapping (device mapper) that provides in linux kernel (Linux kernel) being single Storage Media (step 101) by least one mechanical type hard disk 11 and at least one nonvolatile memory 13 logic integration, use when peripheral operation system is connected with external storage device 10, external storage device 10 can be considered as single Storage Media by peripheral operation system, that is peripheral operation system can think that external storage device 10 is only a Storage Media, but in fact comprise multiple Storage Medias of at least one mechanical type hard disk 11 and at least one nonvolatile memory 12 in external storage device 10.
Then, please also refer to shown in " Fig. 1 ", " Fig. 2 A ", " Fig. 2 B " and " Fig. 3 ", " Fig. 3 " illustrates as the Storage Media of external storage device of the present invention, mechanical type hard disk and nonvolatile memory mapping framework schematic diagram.
Suppose that external storage device 10 comprises the first mechanical type hard disk 111, second mechanical type hard disk 112, first nonvolatile memory 121 and the second nonvolatile memory 122, elder generation foundation and registration Storage Media 20(in linux kernel are the mapping device (mapping device) that Disk Mapping in linux kernel defines).
Then, suppose mutually to map in the 1st magnetic region to N magnetic region of Storage Media 20 and the magnetic region of the first mechanical type hard disk 111, suppose mutually to map in N+1 magnetic region to the 2N magnetic region of Storage Media 20 and the magnetic region of the second mechanical type hard disk 112, suppose mutually to map in 2N+1 magnetic region to the 3N magnetic region of Storage Media 20 and the memory region of the first nonvolatile memory 121, and suppose mutually to map in 3N+1 magnetic region to the 4N magnetic region of Storage Media 20 and the memory region of the second nonvolatile memory 122, Storage Media 20 and the first mechanical type hard disk 111 can be set up, second mechanical type hard disk 112, mapping table 30(mapping table between first nonvolatile memory 121 and the second nonvolatile memory 122).
The first above-mentioned mechanical type hard disk 111, second mechanical type hard disk 112, first nonvolatile memory 121 and the second nonvolatile memory 122 are the target disk (target device) that Disk Mapping in linux kernel defines.
That is when peripheral operation system will by data storing when the 1st magnetic region of Storage Media 20, namely corresponding meeting by data physical holding of the stock in the first mechanical type hard disk 111, and when peripheral operation system will by data storing when the 3N+5 magnetic region of Storage Media 20, namely corresponding meeting by data physical holding of the stock in the second nonvolatile memory 122.
And it should be noted that owing to being adopt linux kernel characteristic to carry out implementation, thus can independent work at RISC or X86 hardware structure and must be not interdependent in any file system.
Please refer again to shown in " Fig. 1 ", " Fig. 2 A " and " Fig. 2 B ", measurement module 13 is to measure environment temperature by temperature-sensitive sticker, and when the speed that measurement module 13 is foundation three axle gravity sensors to be measured and displacement are more than or equal to preset value, then record produces vibrations, and whether shakes (step 102) according to the generation of time remaining record.
For example, the temperature that assumed temperature sensor measures is " 50 degree ", measurement module 13 the environment temperature that measures be " 50 degree "; When supposing that external environment is in continuous vibration, the now speed that measures of three axle gravity sensors and displacement can continue to be more than or equal to preset value, and namely measurement module 13 can record and produce vibrations for every 1 second; And hypothesis external environment only produces disposable vibrations, the now speed that measures of three axle gravity sensors and displacement only can be more than or equal to preset value in special time, and namely measurement module 13 can produce vibrations in special time record.
Then, request module 14 from peripheral operation system receives data store request (step 103) time, namely judge module 15 carries out the judgement whether environment temperature is more than or equal to preset temperature, and whether the total degree shaken in Preset Time is greater than the judgement (step 104) of 0.
Integrating can according to the judged result of judge module 15 pairs of temperature and vibrations with storage module 16, data are stored in a selective way at least one mechanical type hard disk 11 or at least one nonvolatile memory 12(step 105), integrate and the storage module 16 i.e. judged result of foundation judge module 15 pairs of temperature and vibrations, by the specific magnetic region of data storing in Storage Media, to be mapped at least one mechanical type hard disk 11 or at least one nonvolatile memory 12, data selection can be stored at least one mechanical type hard disk 11 or at least one nonvolatile memory 12.
And integrate and the judged result of storage module 16 according to judge module 15 pairs of temperature and vibrations, data are stored in a selective way at least one mechanical type hard disk 11 or at least one nonvolatile memory 12 carries out lower column processing:
When judge module 15 judges that environment temperature is more than or equal to preset temperature, integrate with storage module 16 by data temporary storage in nonvolatile memory 12 be temporal data (step 106).
For example, suppose measurement module 13 the environment temperature that measures for " 70 degree " and hypothesis preset temperature be " 60 degree ", now request module 14 is when peripheral operation system receives data store request, judge module 15 can judge that environment temperature is that " 70 degree " are greater than preset temperature for " 60 degree ", to integrate with storage module 16 then by the magnetic region that data storing maps in Storage Media and nonvolatile memory 12, use by data temporary storage in nonvolatile memory 12 be temporal data.
When judge module 15 judges to be greater than 0 for the total degree shaken in Preset Time, integrate with storage module 16 by data temporary storage in nonvolatile memory 12 be temporal data (step 107).
For example, suppose that measurement module 13 continues all to measure for 30 seconds and record produces vibrations and hypothesis Preset Time is " 10 seconds ", now request module 14 is when peripheral operation system receives data store request, judge module 15 can judge that Preset Time is that the total degree shaken in " 10 seconds " is greater than 0 for " 10 ", to integrate with storage module 16 then by the magnetic region that data storing maps in Storage Media and nonvolatile memory 12, use by data temporary storage in nonvolatile memory 12 be temporal data.
When judge module sentence 15 break environment temperature be less than preset temperature and judge to equal 0 for the total degree shaken in Preset Time time, integrate the magnetic region with storage module 16, temporal data being stored in Storage Media and mechanical type hard disk 11 and mapping, and by magnetic region that data storing maps in Storage Media and mechanical type hard disk 11, to use temporal data and data storing in mechanical type hard disk 11, can the temporal data being temporary in nonvolatile memory 12 is stored in mechanical type hard disk 11 simultaneously and storage data is stored in mechanical type hard disk 11(step 108).
For example, suppose measurement module 13 the environment temperature that measures for " 50 degree " and hypothesis preset temperature be " 60 degree ", suppose that measurement module 13 all produces vibrations without measuring and recording and supposes that Preset Time is " 10 seconds ", now request module 14 is when peripheral operation system receives data store request, judge module 15 can judge that environment temperature is that " 50 degree " to be less than preset temperature for " 60 degree " and Preset Time be the total degree shaken in " 10 seconds " be that " 0 " equals 0, integrate the magnetic region then temporal data being stored in Storage Media and mechanical type hard disk 11 with storage module 16 and mapping, and by magnetic region that data storing maps in Storage Media and mechanical type hard disk 11, use temporal data and data storing in mechanical type hard disk 11, can the temporal data being temporary in nonvolatile memory 12 be stored in mechanical type hard disk 11 simultaneously and storage data is stored in mechanical type hard disk 11.
And the bottom layer driving (driver) that at least one mechanical type hard disk 11 and at least one nonvolatile memory 13 logic integration are single Storage Media is designed and implementation with the Disk Mapping in linux kernel by above-mentioned integration and storage module 16, and by integrating and the judged result of storage module 16 according to judge module 15 pairs of temperature and vibrations, data are stored in a selective way at least one mechanical type hard disk 11 or at least one nonvolatile memory 12, user and operating system can be allowed not to need to carry out any process additionally, the effect of data protection can be had.
In addition, when external storage device 10 performs starting procedure or shutdown process, integrate and namely the temporal data being temporary in nonvolatile memory 12 can be stored in mechanical type hard disk 11(step 109 with storage module 16).
It should be noted that, integrate with storage module 16 be by hybrid hash algorithm by data temporary storage in nonvolatile memory 12 be temporal data, and the temporal data being temporary in nonvolatile memory 12 is stored in mechanical type hard disk 11, please refer to shown in " Fig. 4 ", " Fig. 4 " illustrates as the present invention is adopted hybrid hash algorithm schematic diagram.
Namely on nonvolatile memory 12, two-dimentional hash function is used, nonvolatile memory 12 is divided into X storage row (Set), each storage row are containing Y block (block), each block size is ZKB, above-mentioned X, Y and Z is positive integer, for example, suppose that the size of nonvolatile memory 12 is 1GB, each storage row is containing Y block, and the size of each block is 4KB, then each storage row capacity be Y × 4KB, nonvolatile memory 12 is divided into 1GB/Y × 4KB storage row, be only at this and illustrate it, application category of the present invention is not limited to this.
All import and export requests (IO request), after two-dimentional hash function, enter corresponding storage row and look for empty block in linear probing (linear probing) mode and deposit.If the block in this Set is all full, then look for empty block in linear probing mode toward next Set to deposit, for example, first start to look for empty block at the 1st block to Y block of first storage row, when supposing that the 1st block of first storage row to Y block is neither empty block, empty block is looked for again by the 1st block to Y block of second storage row, when supposing that the 1st block of second storage row to Y block is neither empty block, empty block is looked for again by the 1st block to Y block of the 3rd storage row, the rest may be inferred until look for the block of sky, be only at this and illustrate it, application category of the present invention is not limited to this.
The request of magnetic region (sector) close import and export can be allowed by this to concentrate in close Set, with by data temporary storage in nonvolatile memory 12 for temporal data, and the temporal data being temporary in nonvolatile memory 12 is stored in mechanical type hard disk 11 magnetic head of significantly mechanically moving formula hard disk 11 can not be needed namely to carry out the read-write of temporal data, the speed that temporal data is stored in mechanical type hard disk 11 by nonvolatile memory 12 can be accelerated by this, namely increase the access usefulness of import and export request, and effectively utilize the spatial content of nonvolatile memory 12.
In sum, difference between known the present invention and prior art is the invention provides the external storage device with at least one mechanical type hard disk and at least one nonvolatile memory, logic integration is driven to be Storage Media by system bottom mechanical type hard disk and nonvolatile memory, external storage device measures environment temperature and measures according to time remaining and record to produce and whether shakes, data according to the judged result to temperature and vibrations, can be stored to mechanical type hard disk or nonvolatile memory by external storage device in a selective way.
Can to solve existing for prior art in a mobile environment constantly the situation of vibrations and operational temperature instability by this technological means uses mechanical type hard disk to carry out the problem of data storage, so reach provide avoid in a mobile environment constantly vibrations and operational temperature unstable time use mechanical type hard disk to carry out technology effect of data storage.
Although the embodiment disclosed by the present invention as above, only described content is also not used to directly limit scope of patent protection of the present invention.Any the technical staff in the technical field of the invention, under the prerequisite not departing from the spirit and scope disclosed by the present invention, can do a little change what implement in form and in details.Scope of patent protection of the present invention, still must be as the criterion with the appending claims person of defining.
Claims (10)
1. an external storage device, is characterized in that, comprises:
At least one mechanical type hard disk;
At least one nonvolatile memory;
One measurement module, in order to measure an environment temperature by temperature-sensitive sticker, and when the speed measured according to three axle gravity sensors and displacement are more than or equal to preset value, then record produces vibrations, and produces according to time remaining record and whether shake;
One request module, in order to from a peripheral operation system acceptance one data storing request;
One judge module, in order to when described request module receives described data storing request, judges whether described environment temperature is more than or equal to a preset temperature, and in a Preset Time, judge whether the total degree shaken is greater than 0; And
One integrates and storage module, in order to drive logic integration to be single Storage Media by system bottom described at least one mechanical type hard disk and described at least one nonvolatile memory, and according to the judged result of described judge module to temperature and vibrations, data are stored in a selective way described at least one mechanical type hard disk or described at least one nonvolatile memory.
2. external storage device as claimed in claim 1, it is characterized in that, described integration and storage module drive logic integration to be being described single Storage Media by described mechanical type hard disk and described nonvolatile memory logic integration with the Disk Mapping provided in linux kernel by system bottom.
3. external storage device as claimed in claim 1, it is characterized in that, data, according to the judged result of described judge module to temperature and vibrations, are stored to described at least one mechanical type hard disk or described at least one nonvolatile memory carries out lower column processing by described integration and storage module in a selective way:
When described judge module judges that described environment temperature is more than or equal to described preset temperature, then by data temporary storage in described nonvolatile memory be a temporal data;
When described judge module judges to be greater than 0 for the total degree shaken in described Preset Time, then by data temporary storage in described nonvolatile memory be described temporal data; And
When described judge module judges that described environment temperature is less than described preset temperature and judges to equal 0 for the total degree shaken in described Preset Time, then the described temporal data being temporary in described nonvolatile memory is stored in described mechanical type hard disk simultaneously, and simultaneously by data storing in described mechanical type hard disk.
4. external storage device as claimed in claim 1, it is characterized in that, described integration and storage module are described temporal data by data temporary storage in described nonvolatile memory by hybrid hash algorithm, and the described temporal data being temporary in described nonvolatile memory is stored in described mechanical type hard disk.
5. external storage device as claimed in claim 1, it is characterized in that, described integration and storage module more comprise when described external storage device performs starting procedure or shutdown process, and the described temporal data being temporary in described nonvolatile memory is stored in described mechanical type hard disk.
6. a date storage method for external storage device, is characterized in that, comprises the following step:
There is provided an external storage device with at least one mechanical type hard disk and at least one nonvolatile memory, described at least one mechanical type hard disk and described at least one nonvolatile memory drive logic integration to be single Storage Media by system bottom by described external storage device;
Described external storage device measures an environment temperature by temperature-sensitive sticker, and when the speed measured according to three axle gravity sensors and displacement are more than or equal to preset value, then record produces vibrations, and produces according to time remaining record and whether shake;
Described external storage device is from a peripheral operation system acceptance one data storing request;
Described external storage device, when receiving described data storing request, judges whether described environment temperature is more than or equal to a preset temperature, and in a Preset Time, judge whether the total degree shaken is greater than 0; And
Data, according to the judged result to temperature and vibrations, are stored to described at least one mechanical type hard disk or described at least one nonvolatile memory by described external storage device in a selective way.
7. the date storage method of external storage device as claimed in claim 6, it is characterized in that, by described mechanical type hard disk and described nonvolatile memory by system bottom drive step that logic integration is Storage Media be with the Disk Mapping provided in linux kernel with by described mechanical type hard disk and described nonvolatile memory logic integration for Storage Media, to be supplied to peripheral operation system, described external storage device is considered as single Storage Media.
8. the date storage method of external storage device as claimed in claim 6, it is characterized in that, described external storage device is according to the judged result to temperature and vibrations, and step data being stored in a selective way described at least one mechanical type hard disk or described at least one nonvolatile memory more comprises the following step:
When described external storage device judges that described environment temperature is more than or equal to described preset temperature, then by data temporary storage in described nonvolatile memory be a temporal data;
When described external storage device judges to be greater than 0 for the total degree shaken in described Preset Time, then by data temporary storage in described nonvolatile memory be described temporal data; And
When described external storage device judges that described environment temperature is less than described preset temperature and judges to equal 0 for the total degree shaken in described Preset Time, then the described temporal data being temporary in described nonvolatile memory is stored in described mechanical type hard disk simultaneously, and simultaneously by data storing in described mechanical type hard disk.
9. the date storage method of external storage device as claimed in claim 6, it is characterized in that, the step described temporal data being temporary in described nonvolatile memory being stored in described mechanical type hard disk is described temporal data by data temporary storage in described nonvolatile memory by hybrid hash algorithm, and the described temporal data being temporary in described nonvolatile memory is stored in described mechanical type hard disk.
10. the date storage method of external storage device as claimed in claim 6, it is characterized in that, when the date storage method of described external storage device more comprises described external storage device execution starting procedure or shutdown process, the described temporal data being temporary in described nonvolatile memory is stored in the step of described mechanical type hard disk.
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