CN110489285B - Abnormal branch testing method and system for solid state disk - Google Patents
Abnormal branch testing method and system for solid state disk Download PDFInfo
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- 239000007787 solid Substances 0.000 title claims abstract description 90
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- 239000007924 injection Substances 0.000 claims abstract description 81
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- 238000004231 fluid catalytic cracking Methods 0.000 description 30
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Abstract
The invention has proposed the unusual branch test method and system of a solid state hard disk, this method increases the function of setting up the unusual parameter and function of injecting into the anomaly in the firmware, and then burn the firmware into the solid state hard disk, before testing, visit the function of setting up the unusual parameter through the debug interface, and the function of setting up the unusual parameter enables the function of injecting into the anomaly correspondingly; after the test is started, the abnormal injection operation is executed in the NCM module through the abnormal injection function, and according to the result returned by the FCC aiming at the data operation of the solid state disk and the condition that whether the abnormal injection condition is met or not is judged, the firmware enters different branch flows. A test flow after normal read failure is also provided, and based on the method, an abnormal branch test system of the solid state disk is also provided. By executing the injection exception operation in the NCM module, the firmware can enter the processing of the exception branch more easily according to the returned result, and the test and development period is shortened.
Description
Technical Field
The invention belongs to the technical field of solid state disk testing, and particularly relates to a method and a system for testing abnormal branches of a solid state disk.
Background
In the firmware development process of the solid state disk, processing of various exceptions from multiple layers is inevitably involved, including but not limited to an interaction layer of the solid state disk and a host, an algorithm layer of the solid state disk, a layer directly related to read, write and erase in the solid state disk, and the like. After the processing flows of the abnormal branches are written, the flows need to be tested and verified, however, the probability that the solid state disk is abnormal under the daily test conditions such as fio and the like and firmware enters the processing flows of the abnormal branches is extremely low.
At present, most of the test methods of the abnormal branch are that firmware enters the processing flow of the abnormal branch by artificially injecting errors. However, in the prior art, by means of artificial error injection, the types of errors are not classified, and the layers directly related to read, write and erase in the solid state disk cannot be well tested.
Disclosure of Invention
The invention provides a method and a system for testing abnormal branches of a solid state disk, which enable firmware to enter the processing of the abnormal branches more easily and shorten the testing and developing period by executing injection abnormity in an NCM module and according to the result returned by FCC (fluid catalytic cracking) aiming at the data operation of the solid state disk.
In order to achieve the above object, the present invention provides an abnormal branch testing method for a solid state disk, including adding a function for setting an abnormal parameter and a function for injecting an abnormality in a firmware, writing the firmware into the solid state disk, accessing the function for setting the abnormal parameter through a debug interface before testing, and enabling the function for setting the abnormal parameter to correspond to the function for injecting the abnormality; after the test is started, the abnormal injection operation is executed in the NCM module through the abnormal injection function, namely, according to the result returned by the FCC aiming at the data operation of the solid state disk and the condition that whether the abnormal injection condition is met or not is judged, and the firmware enters different branch flows.
Further, the testing method further comprises:
adding a function for setting abnormal parameters in the firmware, programming the firmware into a solid state disk, and accessing the function for setting the abnormal parameters through a debugging interface before testing; then, a test is started, and after the normal read fails, the hard decoding function on the FCC module injects an exception with constant probability to trigger the NCM module to recover data.
Further, the function for setting the anomaly parameter is used for setting the probability of the anomaly occurrence and the frequency of continuous anomalies when the anomalies are triggered once, and enabling the corresponding function for injecting the anomalies.
Furthermore, the debugging interface is connected to the RS232 serial port module by a connector on the solid state disk.
Further, the types of injected exceptions include primary exceptions and secondary exceptions; the proportion range of the primary anomaly probability and the secondary anomaly probability is larger than 5 to 1 and smaller than 7 to 1.
Further, on the NCM module, the operations of the solid state disk include read, write, erase, rebuild and xor operations of the solid state disk, and read and write operations during power-on and power-off of the hard disk.
Further, the step of determining whether the abnormal injection condition is satisfied according to a result returned by the FCC with respect to the data operation of the solid state disk, where the step of entering the firmware into a different branch flow includes:
if the result returned by the FCC aiming at the data operation of the solid state disk is normal, performing injection exception, and if the condition of injection exception is not met and the result returned by the FCC aiming at the data operation of the solid state disk is still normal, entering a normal flow by the firmware;
if the FCC returns a normal result aiming at the data operation of the solid state disk, performing injection exception, and if the condition of injection exception is met, entering a primary exception flow or a secondary exception flow by the firmware according to the type of the injection exception;
and if the result returned by the FCC for the data operation of the solid state disk is abnormal, returning an abnormal type, and enabling the firmware to enter a primary abnormal flow or a secondary abnormal flow.
Further, the injection condition is to judge whether the random number generated by the rand () function on the NCM module can be evenly divided by the probability of the abnormal setting; if the energy can be divided evenly, the injection condition is satisfied; if not, the implant condition is not satisfied.
An abnormal branch test system of a solid state disk comprises a first test module and a second test module;
the first test module is used for adding a function for setting abnormal parameters and a function for injecting the abnormal parameters into firmware, programming the firmware into a solid state disk, accessing the function for setting the abnormal parameters through a debugging interface before testing, and enabling the function for setting the abnormal parameters to correspond to the function for injecting the abnormal parameters; after the test is started, performing abnormal injection operation on the NCM module through the abnormal injection function, namely judging whether the abnormal injection condition is met or not according to the result returned by the FCC on the data operation of the solid state disk, and enabling the firmware to enter different branch flows;
the second testing module is used for adding a function for setting abnormal parameters in the firmware, programming the firmware into the solid state disk, and accessing the function for setting the abnormal parameters through the debugging interface before testing; and then, starting a test, and after the normal read fails, triggering the NCM module to recover data by injecting an abnormal condition with constant probability by the hard decoding function on the FCC module.
Further, the first test module comprises a parameter setting module and an injection exception module;
the parameter setting module is used for programming the firmware into a solid state disk, accessing a function for setting abnormal parameters through a debugging interface before testing, setting the probability of abnormity and the frequency of continuous abnormity when the abnormity is triggered once, and enabling the function corresponding to the injection abnormity;
and the injection exception module is used for executing injection exception operation in the NCM module through the injection exception function after the test is started, namely judging whether the conditions of injection exception are met or not according to the result returned by the FCC on the data operation of the solid state disk, and enabling the firmware to enter different branch flows.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the embodiment of the invention provides a method and a system for testing abnormal branches of a solid state disk, wherein the method comprises the steps of adding a function for setting abnormal parameters and a function for injecting abnormal parameters into firmware, programming the firmware into the solid state disk, accessing the function for setting the abnormal parameters through a debugging interface before testing, and enabling the function for setting the abnormal parameters to correspond to the function for injecting the abnormal parameters; after the test is started, the abnormal injection operation is executed in the NCM module through the abnormal injection function, that is, the firmware enters different branch flows according to the result returned by the FCC for the data operation of the solid state disk and the condition of judging whether the abnormal injection condition is satisfied. If the result returned by the FCC aiming at the data operation of the solid state disk is normal, performing injection exception, and if the condition of injection exception is not met and the result returned by the FCC aiming at the data operation of the solid state disk is still normal, entering the normal flow by the firmware; if the FCC returns a normal result aiming at the data operation of the solid state disk, performing injection exception, and if the condition of injection exception is met, entering a main exception flow or a secondary exception flow by the firmware according to the type of injection exception; if the result returned by the FCC for the data operation of the solid state disk is abnormal, an abnormal type is returned, and the firmware enters the primary abnormal flow or the secondary abnormal flow. The injection condition is to judge whether the random number generated by the rand () function can be evenly divided by the probability of abnormal occurrence on the NCM module; if the energy can be evenly divided, the injection condition is met; if not, the implant condition is not satisfied. The test method also comprises the steps of adding a function for setting abnormal parameters in the firmware, programming the firmware into the solid state disk, and accessing the function for setting the abnormal parameters through a debugging interface before testing; and then, starting a test, and after the normal read fails, triggering the NCM module to recover data by injecting an abnormal condition with constant probability by the hard decoding function on the FCC module. The invention provides an abnormal branch testing method of a solid state disk and also provides an abnormal branch testing system of the solid state disk. According to the method and the device, the abnormal command is injected into the firmware aiming at the data operation of the solid state disk through the debugging interface, and the firmware can enter the processing of abnormal branches more easily according to the result returned by the FCC aiming at the data operation of the solid state disk, so that the testing and developing period is shortened. The command for injecting the exception can also set the number of continuous exceptions after a single trigger exception, 10 times for read operation and 2 times for write. The firmware enters the abnormal branch processing more frequently in a short time, so that the test pressure can be increased, the firmware is optimized according to the test condition subsequently, the abnormal pressure as large as possible can be borne, and the abnormal processing capacity of the firmware is improved. The exception injection code in the firmware ensures that the probability of occurrence of the primary exception is high and the probability of occurrence of the secondary exception is low, and simulates the exception occurrence type and frequency of the solid state disk in a real use scene, so that the exception handling process of the firmware is more reasonable.
Drawings
Fig. 1 is a flowchart of an abnormal branch testing method for a solid state disk according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of an abnormal branch testing system for a solid state disk according to embodiment 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Example 1
The embodiment 1 of the invention provides a method and a system for testing abnormal branches of a solid state disk, and relates to a layer in the solid state disk, which is directly related to read, write and erase, namely, two modules, namely, an FCC (fluid catalytic cracking) module and an NCM (national center for mobile) module in firmware. The method comprises the following steps: adding a function for setting abnormal parameters and a function for injecting the abnormal parameters into the firmware, programming the firmware into a solid state disk, accessing the function for setting the abnormal parameters through a debugging interface before testing, and enabling the function for setting the abnormal parameters to correspond to the function for injecting the abnormal parameters; after the test is started, the abnormal injection operation is executed in the NCM module through the abnormal injection function, that is, the firmware enters different branch flows according to the result returned by the FCC for the data operation of the solid state disk and the condition of judging whether the abnormal injection condition is satisfied.
If the FCC returns a normal result aiming at the data operation of the solid state disk, performing injection exception, and if the condition of injection exception is met, entering the main exception flow or the secondary exception flow by the firmware according to the type of injection exception;
if the result returned by the FCC for the data operation of the solid state disk is abnormal, an abnormal type is returned, and the firmware enters the primary abnormal flow or the secondary abnormal flow.
The injection condition is to judge whether the random number generated by the rand () function can be evenly divided by the probability of abnormity on the NCM module; if the energy can be divided evenly, the injection condition is satisfied; if not, the implant condition is not satisfied.
The method also comprises the steps of adding a function for setting abnormal parameters in the firmware, programming the firmware into the solid state disk, and accessing the function for setting the abnormal parameters through a debugging interface before testing; and then, starting a test, and after the normal read fails, triggering the NCM module to recover data by injecting an abnormal condition with constant probability by the hard decoding function on the FCC module.
The debugging interface is connected to the RS232 serial port module through a connector on the solid state disk.
The function for setting the abnormal parameters is used for setting the probability of the occurrence of the abnormality and the frequency of continuous abnormality when the abnormality is triggered once, and enabling the corresponding function for injecting the abnormality.
The types of the injection exception comprise a main exception and a secondary exception, wherein the main exception refers to an exception which has a high probability of occurrence and is more important in the actual use of the solid state disk, and the secondary exception is opposite to the main exception. The probability of giving the primary anomaly a greater probability than the secondary anomaly at the time of injection, the ratio of the primary anomaly probability to the secondary anomaly probability ranging from greater than 5 to 1 and less than 7 to 1. And each anomaly may be set for a consecutive number of times of a single trigger to increase the anomaly test pressure.
The data operations involved on the NCM module of the present invention include: read, write, erase, rebuild, xor and write and read during power-up and power-down of the hard disk. The function setting exception parameters, as given in the table below, enables a table of functions that inject exceptions. Wherein the read during power-up and power-down is realized by modifying the macro PSLC _ RD _ ERR _ RATE, and when the value is 0, the read injection exception during power-up and power-down is not enabled; if not, injection of an exception is enabled, and the value is the probability of an exception occurring.
Fig. 1 shows a flowchart of an abnormal branch testing method for a solid state disk according to embodiment 1 of the present invention.
In step S101, the process is started;
in step S102, a function for setting an abnormal parameter and a function for injecting an abnormal parameter are added to the firmware, the firmware is programmed into the solid state disk, before the test, the function for setting an abnormal parameter is accessed through the debug interface, and the function for setting an abnormal parameter enables the function for injecting an abnormal parameter correspondingly; after the test is started, performing exception injection operation on the NCM module through an exception injection function;
in step S103, determining whether a result returned by the FCC for the data operation of the solid state disk is normal, and if so, entering step S104; if the abnormality occurs, the step S107 is entered;
in step S104, it is determined whether or not the injection abnormality condition is satisfied; if not, executing step S105, and if so, executing step S106;
in step S105, if the result returned by the FCC for the data operation of the solid state disk is still normal, the firmware enters a normal flow;
in step S106, the firmware enters the primary exception flow or the secondary exception flow according to the type of the injection exception;
in step S107, returning to the exception type, the firmware enters the primary exception flow or the secondary exception flow.
The invention also provides an abnormal branch testing system of the solid state disk, and as shown in fig. 2, the abnormal branch testing system of the solid state disk comprises a first testing module and a second testing module;
a first test module and a second test module;
the first test module is used for adding a function for setting abnormal parameters and a function for injecting the abnormal parameters into the firmware, programming the firmware into the solid state disk, accessing the function for setting the abnormal parameters through a debugging interface before testing, and enabling the function for setting the abnormal parameters to correspond to the function for injecting the abnormal parameters; after the test is started, performing injection abnormal operation in the NCM module through an injection abnormal function, namely judging whether the conditions of injection abnormality are met or not according to the result returned by the FCC on the data operation of the solid state disk, and enabling the firmware to enter different branch flows;
the second testing module is used for adding a function for setting abnormal parameters in the firmware, programming the firmware into the solid state disk, and accessing the function for setting the abnormal parameters through the debugging interface before testing; and then, starting a test, and after the normal read fails, triggering the NCM module to recover data by injecting an abnormal condition with constant probability by the hard decoding function on the FCC module.
The first test module comprises a parameter setting module and an injection exception module;
the parameter setting module is used for accessing a function for setting abnormal parameters through a debugging interface before testing when the firmware is programmed into the solid state disk, setting the probability of the occurrence of the abnormality and the frequency of continuous abnormality when the abnormality is triggered once, and enabling the function with the corresponding injection abnormality;
and the injection exception module is used for executing injection exception operation in the NCM module through an injection exception function after the test is started, namely judging whether the conditions of injection exception are met or not according to the result returned by the FCC aiming at the data operation of the solid state disk, and enabling the firmware to enter different branch flows.
The foregoing is merely illustrative and explanatory of the present invention and various modifications, additions or substitutions may be made to the specific embodiments described by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A method for testing abnormal branches of a solid state disk is characterized by comprising the following steps,
adding a function for setting abnormal parameters and a function for injecting the abnormal parameters into firmware, programming the firmware into a solid state disk, accessing the function for setting the abnormal parameters through a debugging interface before testing, and enabling the function for setting the abnormal parameters to correspond to the function for injecting the abnormal parameters; after the test is started, the abnormal injection operation is executed in the NCM module through the abnormal injection function, namely, according to the result returned by the FCC aiming at the data operation of the solid state disk and the condition that whether the abnormal injection condition is met or not is judged, and the firmware enters different branch flows.
2. The method for testing the abnormal branch of the solid state disk according to claim 1, further comprising:
adding a function for setting abnormal parameters in firmware, programming the firmware into a solid state disk, and accessing the function for setting the abnormal parameters through a debugging interface before testing; then, testing is started, and after the normal read fails, the hard decoding function on the FCC module injects an exception with constant probability to trigger the NCM module to recover data.
3. The method according to claim 1 or 2, wherein the function for setting the exception parameter is used to set a probability of an exception occurring and a number of consecutive exceptions when an exception is triggered once, and enable a corresponding function for injecting an exception.
4. The method for testing the abnormal branch of the solid state disk according to claim 1 or 2, wherein the debugging interface is connected to an RS232 serial port module by a connector on the solid state disk in a switching manner.
5. The method according to claim 1, wherein the types of the injected exceptions include a primary exception and a secondary exception; the primary anomaly probability and the secondary anomaly probability ratio range from greater than 5 to 1 to less than 7 to 1.
6. The method according to claim 1, wherein on the NCM module, the operations of the solid state disk include read, write, erase, rebuild, and xor operations of the solid state disk, and read and write operations during power-on and power-off of the solid state disk.
7. The method according to claim 1, wherein the determining whether the condition for injecting the exception is satisfied according to the result returned by the FCC with respect to the data operation of the solid state disk, and the firmware entering different branch processes includes:
if the result returned by the FCC aiming at the data operation of the solid state disk is normal, performing injection exception, and if the condition of injection exception is not met and the result returned by the FCC aiming at the data operation of the solid state disk is still normal, entering a normal flow by the firmware;
if the FCC returns a normal result aiming at the data operation of the solid state disk, performing injection exception, and if the condition of injection exception is met, entering a main exception flow or a secondary exception flow by the firmware according to the type of the injection exception;
and if the result returned by the FCC for the data operation of the solid state disk is abnormal, returning an abnormal type, and enabling the firmware to enter a primary abnormal flow or a secondary abnormal flow.
8. The method according to claim 7, wherein the condition for injecting the exception is to determine whether the random number generated by the rand () function in the NCM module can be divided by the probability of the exception being set; if the injection can be divided evenly, the condition of abnormal injection is met; if not, the condition for injecting an exception is not satisfied.
9. An abnormal branch test system of a solid state disk is characterized by comprising a first test module and a second test module;
the first test module is used for adding a function for setting abnormal parameters and a function for injecting the abnormal parameters into the firmware, programming the firmware into the solid state disk, accessing the function for setting the abnormal parameters through a debugging interface before testing, and enabling the function for setting the abnormal parameters to correspond to the function for injecting the abnormal parameters; after the test is started, performing abnormal injection operation on the NCM module through the abnormal injection function, namely judging whether the abnormal injection condition is met or not according to the result returned by the FCC on the data operation of the solid state disk, and enabling the firmware to enter different branch flows;
the second testing module is used for adding a function for setting abnormal parameters in the firmware, programming the firmware into the solid state disk, and accessing the function for setting the abnormal parameters through the debugging interface before testing; then, testing is started, and after the normal read fails, the hard decoding function on the FCC module injects an exception with constant probability to trigger the NCM module to recover data.
10. The system according to claim 9, wherein the first testing module comprises a parameter setting module and an exception injection module;
the parameter setting module is used for accessing a function for setting abnormal parameters through a debugging interface before testing when the firmware is programmed into the solid state disk, setting the probability of the occurrence of the abnormality and the frequency of continuous abnormality when the abnormality is triggered once, and enabling the function corresponding to the injection abnormality;
and the injection exception module is used for executing injection exception operation in the NCM module through the injection exception function after the test is started, namely judging whether the conditions of injection exception are met or not according to the result returned by the FCC aiming at the data operation of the solid state disk, and enabling the firmware to enter different branch flows.
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