CN100405315C - Method for verifying embedded file system reliability - Google Patents
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- CN100405315C CN100405315C CNB2006101097495A CN200610109749A CN100405315C CN 100405315 C CN100405315 C CN 100405315C CN B2006101097495 A CNB2006101097495 A CN B2006101097495A CN 200610109749 A CN200610109749 A CN 200610109749A CN 100405315 C CN100405315 C CN 100405315C
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- 238000000034 method Methods 0.000 title claims abstract description 68
- 238000012795 verification Methods 0.000 claims description 13
- 230000005856 abnormality Effects 0.000 claims description 11
- 238000012217 deletion Methods 0.000 claims description 11
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- 238000007689 inspection Methods 0.000 claims description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000007726 management method Methods 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 3
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- 238000011067 equilibration Methods 0.000 description 3
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Abstract
The invention provides a validating method of the reliability for the embedded file system. The process includes: it obligates the random size of the memory space in the safety range of the input parameter in the embedded file system and then it writes the random size of the files in the memory space until the space is full. Then it deletes the files according to the random sequence. After it, it will detect if the space, the file list and the data are normal and notes the results. The method also includes the detecting the safety range of the embedded file system inputting parameter, the logic space management security and the haleness in the abnormal condition. The method can help the developer to find the question and modify the design quickly to improve the embedded the file system performance.
Description
Technical field
The present invention relates to the embedded file system technology, particularly a kind of verification method of embedded file system reliability.
Background technology
Along with the continuous development of technology, embedded system is widespread use in various consumption and industrial electronics.Because information processing amount and storage size are increasing, file system also is widely applied in these embedded systems, be used for lot of data is stored and managed, multimedia handheld device particularly, its data volume is big, content is complicated, more needs efficient, a safe file system to manage.This file system of using in embedded system is an embedded file system.
Embedded file system has following characteristics:
A) customizing functions: at different embedded product customization file management facilities more or less.
B) storage medium difference: according to the different requirements of embedded product to storage size, reliability and the efficiency of management etc., select the different storage mediums of all size for use, such as disk, flash memory (Flash) etc., and different storage mediums is aided with different management methods.
C) environment for use difference: different software platforms and hardware environment are arranged in various embedded products, and the environment that therefore different embedded file systems uses has nothing in common with each other.
The These characteristics of embedded file system causes in its performance history, need carry out a large amount of checkings to the reliability of embedded file system at different customizing functions, storage medium and environment for use.
But, the method for also the reliability of embedded file system not being verified comprehensively at present, so deviser orientation problem and improvement design proposal rapidly, this has formed acid test to Products Development cycle and cost.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of verification method of embedded file system reliability, realizes the comprehensive checking to embedded file system reliability.
First aspect to achieve these goals the invention provides a kind of embedded file system reliability verification method, and this method may further comprise the steps:
A, in the safe range of embedded file system input parameter, reserve the storage space of size at random;
B, the file that writes size at random in the storage space of reserving are full up to storage space is write, and after writing file, whether the inquiry theory storage space takies and take consistent with the physical memory space at every turn; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record queries result;
Whether C, the file that writes according to the deletion of at random order, and behind each deleted file, inquiry theory storage space take and take consistent with the physical memory space; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record queries result;
Circulation execution in step A to step C once more than, after being finished, generate the checking report.
The described reservation of the steps A storage space of size at random is: reserve whole storage spaces; Or reserve size at random and size and be not more than half storage space of whole storage spaces.
The big or small at random space of the described reservation of steps A is for reserving whole storage spaces, and described step B and step C comprise:
A1, in the storage space of reserving, write size is identical more than one small documents write until storage space full, then according at random order deletion all files;
A2, in the storage space of reserving, write a super large file write until storage space full, all files that writes of deletion then;
A3, in the storage space of reserving, write the file that varies in size more than write until storage space full, then according at random order deletion all files;
Step a1, a2, a3 write at every turn with deleted file after, whether the inquiry theory storage space takies and takies consistent with the physical memory space; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record check result.
The big or small at random space of the described reservation of steps A is not more than half storage space of whole storage spaces for reserving size at random and size, and described steps A comprises to step C:
Half of b1, reserved storage space writes file therein to full up, deletes these files then;
The storage space of b2, reservation 1/4th writes file therein to full up, deletes these files then;
One of b3, reservation percentage or littler storage space write file therein to full up, delete these files then;
Step b1, b2, b3 write at every turn with deleted file after, whether the inquiry theory storage space takies and takies consistent with the physical memory space; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record check result.
This method further comprises: with the security parameter input of embedded file system, to system's power down, whether the listed files that inquiry is enumerated after restarting is consistent with the listed files of establishment in the write operation process; Whether the data that inquiry is read are consistent with the data that write, and the record check result, generate the checking report.
This method further comprises:
In the safe range of embedded file system input parameter, the randomly changing filename length is created file; Randomly changing side-play amount, block length and file size written document are write fullly until storage space, and in the process of creating file and written document, check whether logical space takies situation normal, and the record check result, if note abnormalities, then generate the checking report;
Otherwise, delete the file in the storage space at random, check whether the logical space release conditions is normal, and the record check result, when noting abnormalities, generate the checking report.
The described reservation of steps A at random the size storage space before, further comprise: randomly changing input parameter in the preset range of the input parameter that is verified embedded file system, whether the listed files of enumerating consistent with the listed files of establishment; Whether the data that inspection is read are consistent with the data that write, and the record check result, when discovery is inconsistent, generate the checking report.
This method further comprises: the stray parameter beyond the input embedded file system input parameter safe range, check whether the listed files of enumerating is consistent with the listed files of establishment; Whether the data that inspection is read are consistent with the data that write, and the record check result, generate the checking report.
Before the storage space of size, further comprise: in the preset range of the input parameter that is verified embedded file system, the randomly changing input parameter checks whether the listed files enumerate is consistent with the listed files of establishment to the described reservation of steps A at random; Whether the data that inspection is read are consistent with the data that write, and the record check result, when discovery is inconsistent, generate the checking report;
This method further comprises:
In the safe range of the various input parameters of embedded file system, the randomly changing filename length is created file; Randomly changing side-play amount, block length and file size written document are write fullly until storage space, and in the process of creating file and written document, check whether logical space takies situation normal, and the record check result, if note abnormalities, then generate the checking report; Otherwise, delete the file in the storage space at random, check whether the logical space release conditions is normal, and the record check result, when noting abnormalities, generate the checking report;
And the stray parameter beyond the input embedded file system input parameter safe range, check whether the listed files of enumerating is consistent with the listed files of establishment; Whether the data that inspection is read are consistent with the data that write, and the record check result, generate the checking report.
The verification method of embedded file system reliability provided by the invention at the characteristics of embedded file system, is verified its reliability from the security of storage space management, the robustness under the abnormal conditions, three aspects of safe operation scope.Particularly, the security of storage space management comprises: the security of the security of the security of embedded file system garbage reclamation mechanism, abrasion equilibration mechanism and logical space management; Robustness under the abnormal conditions comprises: the robustness of the robustness of embedded file system physical layer conversion mechanism and embedded file system parameter protection mechanism.Utilize the verification method of embedded file system reliability of the present invention can help the rapid orientation problem of developer, improve design proposal, thereby can improve the performance of embedded file system.
Description of drawings
Fig. 1 is the schematic flow sheet of a preferred embodiment of the verification method of embedded file system reliability of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and beneficial effect clearer, the present invention is described in more detail below in conjunction with embodiment and accompanying drawing.
The verification method of embedded file system reliability provided by the invention, this method circulation is carried out more than following steps: in the safe range of embedded file system input parameter, reserve the storage space of size at random, it is full up to storage space is write to write big or small at random file then in the storage space of reserving, delete the file that writes according to order at random again, after each file writes or deletes, whether the inquiry storage space is normal, whether listed files, data be intact, and the record queries result; After circulation is finished, generate the checking report.
Referring to Fig. 1, Fig. 1 is the schematic flow sheet of a preferred embodiment of the verification method of embedded file system reliability of the present invention.As shown in Figure 1, this flow process may further comprise the steps:
Randomly changing input parameter in the preset range of the input parameter that is verified embedded file system checks whether the data in listed files and the file are normal, and the record check result, if note abnormalities, then execution in step 107, process ends; Otherwise, execution in step 102.
Here, check whether the data in listed files and the file normally are meant: check whether the listed files of enumerating is consistent with the listed files of establishment, and whether the file data of reading is consistent with the file data that writes.If consistent, then check result is normal; Otherwise check result is unusual.
Here, logical space is meant the storage space of embedded file system logic addressing, relative amount of physical memory.
The security of described verifying logic space management is meant checking when creating file, the filename length of randomly changing file; Randomly changing side-play amount, block length and file size take whether can produce harmful effect to the logical space of embedded file system when written document.
Concrete proof procedure is: in the safe range of the various input parameters of embedded file system, the randomly changing filename length is created file; Randomly changing side-play amount, block length and file size written document, write full until storage space, and in the process of creating file and written document, check whether logical space takies situation normal, check promptly whether the theoretical logic space hold is consistent with the actual logic space hold, and the record check result, if note abnormalities, then execution in step 107;
Otherwise, after said process is finished, delete the file in the storage space at random, check whether the logical space release conditions is normal, check promptly whether the theoretical logic space discharges consistent with the release of actual logic space, and the record check result, if note abnormalities, then execution in step 107, process ends; Otherwise, execution in step 103.
Garbage reclamation (Garbage Collection) mechanism is meant the invalid memory block of sign is reclaimed release, the mechanism that is reused by file system.
Concrete proof procedure is: in the safe range of the various input parameters of embedded file system, reserve whole storage spaces, it is full up to storage space is write to write big or small at random file then in storage space, delete the file that writes according to order at random again, after each file writes or deletes, check whether the data in storage space, listed files and the file are normal, and the record check result; According to default cycle index, this step is carried out in circulation; After circulation is finished, execution in step 104.
In order to simplify implementation procedure, this step can adopt following three detailed processes to realize:
A1, in storage space, write the identical small documents of a plurality of sizes write until storage space full, then according at random order deletion all files;
A2, in storage space, write a super large file write until storage space full, all files that writes of deletion then;
A3, in storage space, write a plurality of files that vary in size write until storage space full, then according at random order deletion all files.
According to default cycle index, the process of a1 to a3 carried out in circulation, and behind written document or deleted file each time, whether data are normal in inspection storage space, listed files and the file, and the record check result.
Abrasion equilibration (Wear Leveling) mechanism is meant in order to guarantee that storer has long serviceable life, keeps various piece that the mechanism of the access times of comparison equilibrium is arranged.
Concrete proof procedure is: in the safe range of the various input parameters of embedded file system, that reserves size at random is not more than half storage space of storage space, it is full up to storage space is write to write big or small at random file then in the storage space of reserving, delete the file that writes according to order at random again, after each file writes or deletes, check whether the data in storage space, listed files and the file are normal, and the record queries result; According to default cycle index, this step is carried out in circulation; After circulation is finished, execution in step 105.
In order to simplify implementation procedure, this step can adopt following three detailed processes to realize:
Half of b1, reserved storage space writes file therein to full up, deletes these files then, and according to default cycle index, this process is carried out in circulation;
The storage space of b2, reservation 1/4th writes file therein to full up, deletes these files then, and according to default cycle index, this process is carried out in circulation;
One of b3, reservation percentage or littler storage space write file therein to full up, delete these files then, and according to default cycle index, this process is carried out in circulation;
In above three processes, write each time with deleted file after, check whether the data in storage space, listed files and the file normal, and the record check result.
The robustness of described certificate parameter protection mechanism is meant checking when the parameter beyond the input embedded file system input parameter safe range, and whether the data in listed files and the file are normal.
Concrete proof procedure is: the stray parameter beyond the safe range of input embedded file system input parameter, check whether the data in listed files and the file are normal, and the record check result.
The security of described checking physical layer conversion mechanism is meant that checking works as embedded file system and power down occurs in the write operation process, and after system restarted, whether the data in listed files and the file were normal.
Concrete proof procedure is: with the security parameter input of embedded file system, in the write operation process,, restarts the back and checks whether the data in listed files and the file are normal system's power down, and the record check result, execution in step 107.
Step 107 with the check result of above each step record, generates the reliability demonstration report, process ends.
Whether the described inspection storage space of step 103 to 106 normally is meant: whether with the physical memory space take consistent, if consistent, then check result is normal if checking that theoretical storage space takies; Otherwise be unusual.Whether the data in described inspection listed files and the file normally are meant: check whether the listed files of enumerating is consistent with the listed files of establishment, and whether the file data of reading is consistent with the file data that writes, if consistent, then check result is normal; Otherwise check result is unusual.
Above-mentioned steps only is a preferred embodiment of the present invention, in actual applications, can select the verification step of needs execution according to the actual conditions of the embedded file system that will verify.Generally speaking, step 103 and step 104 are the proof procedures that must carry out, and step 101,102,105 and 106 is optional proof procedures.If in the proof procedure of embedded file system, selected step 101 and 102, then these two steps must be placed on the front of other proof procedure according to sequencing, but other verification step, comprise the not requirement of sequencing of step 103 to 106, in proof procedure, can adjust the execution sequence of each step as required.
Claims (9)
1. the verification method of an embedded file system reliability is characterized in that, this method may further comprise the steps:
A, in the safe range of embedded file system input parameter, reserve the storage space of size at random;
B, the file that writes size at random in the storage space of reserving are full up to storage space is write, and after writing file, whether the inquiry theory storage space takies and take consistent with the physical memory space at every turn; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record queries result;
Whether C, the file that writes according to the deletion of at random order, and behind each deleted file, inquiry theory storage space take and take consistent with the physical memory space; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record queries result;
Circulation execution in step A to step C once more than, after being finished, generate the checking report.
2. the method for claim 1 is characterized in that, the described reservation of the steps A storage space of size at random is: reserve whole storage spaces; Or reserve size at random and size and be not more than half storage space of whole storage spaces.
3. the method for claim 1 is characterized in that, the big or small at random space of the described reservation of steps A is for reserving whole storage spaces, and described step B and step C comprise:
A1, in the storage space of reserving, write size is identical more than one small documents write until storage space full, then according at random order deletion all files;
A2, in the storage space of reserving, write a super large file write until storage space full, all files that writes of deletion then;
A3, in the storage space of reserving, write the file that varies in size more than write until storage space full, then according at random order deletion all files;
Step a1, a2, a3 write at every turn with deleted file after, whether the inquiry theory storage space takies and takies consistent with the physical memory space; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record check result.
4. the method for claim 1 is characterized in that, the big or small at random space of the described reservation of steps A is not more than half storage space of whole storage spaces for reserving size at random and size, and described steps A comprises to step C:
Half of b1, reserved storage space writes file therein to full up, deletes these files then;
The storage space of b2, reservation 1/4th writes file therein to full up, deletes these files then;
One of b3, reservation percentage or littler storage space write file therein to full up, delete these files then;
Step b1, b2, b3 write at every turn with deleted file after, whether the inquiry theory storage space takies and takies consistent with the physical memory space; Whether the listed files that inquiry is enumerated is consistent with the listed files of establishment; The and whether data that inquiry is read are consistent with the data that write, and record check result.
5. as each described method of claim 1 to 4, it is characterized in that, this method further comprises: with the security parameter input of embedded file system, to system's power down, whether the listed files that inquiry is enumerated after restarting is consistent with the listed files of establishment in the write operation process; Whether the data that inquiry is read are consistent with the data that write, and the record check result, generate the checking report.
6. as each described method of claim 1 to 4, it is characterized in that this method further comprises:
In the safe range of embedded file system input parameter, the randomly changing filename length is created file; Randomly changing side-play amount, block length and file size written document are write fullly until storage space, and in the process of creating file and written document, check whether logical space takies situation normal, and the record check result, if note abnormalities, then generate the checking report;
Otherwise, delete the file in the storage space at random, check whether the logical space release conditions is normal, and the record check result, when noting abnormalities, generate the checking report.
7. as each described method of claim 1 to 4, it is characterized in that, the described reservation of steps A at random the size storage space before, further comprise: randomly changing input parameter in the preset range of the input parameter that is verified embedded file system, check whether the listed files of enumerating is consistent with the listed files of establishment; Whether the data that inspection is read are consistent with the data that write, and the record check result, when discovery is inconsistent, generate the checking report.
8. as each described method of claim 1 to 4, it is characterized in that this method further comprises: the stray parameter beyond the input embedded file system input parameter safe range, check whether the listed files of enumerating is consistent with the listed files of establishment; Whether the data that inspection is read are consistent with the data that write, and the record check result, generate the checking report.
9. method as claimed in claim 5, it is characterized in that, the described reservation of steps A at random the size storage space before, further comprise: in the preset range of the input parameter that is verified embedded file system, the randomly changing input parameter checks whether the listed files of enumerating is consistent with the listed files of establishment; Whether the data that inspection is read are consistent with the data that write, and the record check result, when discovery is inconsistent, generate the checking report;
This method further comprises:
In the safe range of the various input parameters of embedded file system, the randomly changing filename length is created file; Randomly changing side-play amount, block length and file size written document are write fullly until storage space, and in the process of creating file and written document, check whether logical space takies situation normal, and the record check result, if note abnormalities, then generate the checking report; Otherwise, delete the file in the storage space at random, check whether the logical space release conditions is normal, and the record check result, when noting abnormalities, generate the checking report;
And the stray parameter beyond the input embedded file system input parameter safe range, check whether the listed files of enumerating is consistent with the listed files of establishment; Whether the data that inspection is read are consistent with the data that write, and the record check result, generate the checking report.
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| CN100458724C (en) * | 2007-02-02 | 2009-02-04 | 北京中星微电子有限公司 | Test platform and method for testing embedded file system and protocol |
| CN102117272A (en) * | 2009-12-30 | 2011-07-06 | 中兴通讯股份有限公司 | Verification method and device on embedded file system stability |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070254A (en) * | 1997-10-17 | 2000-05-30 | International Business Machines Corporation | Advanced method for checking the integrity of node-based file systems |
| CN1529239A (en) * | 2003-09-28 | 2004-09-15 | 中兴通讯股份有限公司 | Fault-tolerant processing method for embedding device file system |
| CN1758253A (en) * | 2005-10-24 | 2006-04-12 | 中兴通讯股份有限公司 | File management system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070254A (en) * | 1997-10-17 | 2000-05-30 | International Business Machines Corporation | Advanced method for checking the integrity of node-based file systems |
| CN1529239A (en) * | 2003-09-28 | 2004-09-15 | 中兴通讯股份有限公司 | Fault-tolerant processing method for embedding device file system |
| CN1758253A (en) * | 2005-10-24 | 2006-04-12 | 中兴通讯股份有限公司 | File management system and method |
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