CN109102839B - Bad block marking method, device, equipment and readable storage medium - Google Patents

本发明公开了一种坏块标记方法，包括：获取目标操作的执行时间；判断执行时间是否超过预设的第一阈值；若是，则判断目标操作是否完成，当目标操作未完成时，轮询检测目标操作的状态，当检测次数超过预设的第二阈值时，将目标操作对应的数据块标记为坏块。该方法在目标操作的执行时间超过第一阈值且目标操作未完成时，未将目标操作对应的数据块标记为坏块，而是轮询检测目标操作的状态，直至检测次数超过第二阈值时，才将目标操作对应的数据块标记为坏块，由此可给予目标操作充足的执行时间，从而可提高坏块标记的准确性，避免存储空间的浪费。相应地，本发明公开的一种坏块标记装置、设备及可读存储介质，也同样具有上述技术效果。

The invention discloses a bad block marking method, which includes: obtaining the execution time of a target operation; judging whether the execution time exceeds a preset first threshold; if so, judging whether the target operation is completed, and when the target operation is not completed, polling The state of the target operation is detected, and when the number of detections exceeds a preset second threshold, the data block corresponding to the target operation is marked as a bad block. When the execution time of the target operation exceeds the first threshold and the target operation is not completed, the method does not mark the data block corresponding to the target operation as a bad block, but polls the state of the target operation until the number of detections exceeds the second threshold. , the data block corresponding to the target operation is marked as a bad block, so that the target operation can be given sufficient execution time, thereby improving the accuracy of bad block marking and avoiding the waste of storage space. Correspondingly, the bad block marking device, device and readable storage medium disclosed in the present invention also have the above technical effects.

Bad block marking method, device, equipment and readable storage medium

Technical Field

The present invention relates to the field of data storage technologies, and in particular, to a bad block marking method, apparatus, device, and readable storage medium.

Background

Solid State drive ssd (solid State drives), also called solid disk, is a hard disk made of solid State electronic memory chip array, which includes a plurality of data blocks (blocks) for storing data, and each data block is preset with a corresponding storage space.

Generally, when a write operation or a read operation fails to be executed, a data block corresponding to the operation is marked as a bad block, and the bad block can be normally used only after being processed correspondingly. The method for marking bad blocks in the prior art comprises the following steps: and presetting a corresponding execution time threshold for the operation, and marking the data block corresponding to the operation as a bad block when the execution time of the write operation or the read operation exceeds the preset threshold.

Because the execution time of one operation is influenced by multiple factors, the operation with the execution time exceeding the threshold value is not failed to be executed, namely: an operation is successfully executed even if the execution time of the operation exceeds a threshold. Therefore, whether the operation is failed to be executed is judged only in a mode of setting a threshold value, and whether the corresponding data block is a bad block is determined, so that the situation of misjudgment can exist; after one data block is marked as a bad block, the data block cannot be normally used, and if misjudgment is frequently caused, the storage space of the solid state disk is reduced, so that the waste of the storage space is caused.

Therefore, how to improve the accuracy of bad block marking and avoid the waste of storage space is a problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a bad block marking method, a bad block marking device, bad block marking equipment and a readable storage medium, so that the bad block marking accuracy is improved, and the waste of storage space is avoided.

In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

a bad block marking method, comprising:

acquiring the execution time of the target operation;

judging whether the execution time exceeds a preset first threshold value;

and if so, judging whether the target operation is finished, polling and detecting the state of the target operation when the target operation is not finished, and marking the data block corresponding to the target operation as a bad block when the detection times exceed a preset second threshold value.

Wherein the polling detects the target operation, including:

and sending a detection command according to a preset period, acquiring a return signal, and determining the state of the target operation according to the return signal, wherein the state of the target operation is finished or unfinished.

The polling detects the state of the target operation, and marks a data block corresponding to the target operation as a bad block when the detection frequency exceeds a preset second threshold, including:

s1, sending the detection command according to a preset period and acquiring the return signal;

s2, judging whether the return signal is consistent with a preset completion signal or not; if yes, go to S3; if not, go to S4;

s3, determining that the target operation state is complete, and stopping sending the detection command;

s4, judging whether the detection times exceed the second threshold value; if yes, go to S5; if not, returning to S1;

s5, determining that the state of the target operation is incomplete, and marking the data block corresponding to the target operation as a bad block.

Before marking the data block corresponding to the target operation as a bad block, the method further includes:

judging whether a data object exists in a data block corresponding to the target operation;

if yes, migrating the data object to a redundant data block, and executing the step of marking the data block corresponding to the target operation as a bad block.

Wherein, still include:

and when the data block corresponding to the target operation does not store the data object, the step of marking the data block corresponding to the target operation as a bad block is executed.

Wherein the target operation comprises: any one or combination of a read operation, a write operation, and an erase operation.

A bad block marking apparatus comprising:

the acquisition module is used for acquiring the execution time of the target operation;

the judging module is used for judging whether the execution time exceeds a preset first threshold value;

and the marking module is used for judging whether the target operation is finished or not when the execution time exceeds a preset first threshold, polling and detecting the state of the target operation when the target operation is not finished, and marking the data block corresponding to the target operation as a bad block when the detection times exceeds a preset second threshold.

Wherein the marking module is specifically configured to:

and sending a detection command according to a preset period, acquiring a return signal, and determining the state of the target operation according to the return signal, wherein the state of the target operation is finished or unfinished.

A bad block marking apparatus comprising:

a memory for storing a computer program;

a processor for implementing the steps of the bad block marking method of any one of the above when executing the computer program.

A readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the bad block marking method of any of the above.

According to the scheme, the embodiment of the invention provides a bad block marking method, which comprises the following steps: acquiring the execution time of the target operation; judging whether the execution time exceeds a preset first threshold value; and if so, judging whether the target operation is finished, polling and detecting the state of the target operation when the target operation is not finished, and marking the data block corresponding to the target operation as a bad block when the detection times exceed a preset second threshold value.

It can be seen that, when the execution time of the target operation exceeds a preset first threshold and the target operation is not completed, the method does not mark the data block corresponding to the target operation as a bad block, but polls the state of the target operation, and marks the data block corresponding to the target operation as a bad block until the detection times exceed a preset second threshold; and in the detection process, the target operation can be executed and completed at any time. The execution time of the target operation may be influenced by the external influence of the current application environment, such as too high temperature, and thus it is not always possible to fail the execution. Sufficient execution time is given to the target operation, so that the target operation influenced by external force can be executed, and normal data blocks can be prevented from being marked as bad blocks; the execution state of the target operation is judged by a double detection method, and whether the data block corresponding to the target operation is a bad block is further judged, so that the accuracy of bad block marking can be improved, and the waste of storage space is avoided.

Accordingly, the bad block marking device, the apparatus and the readable storage medium provided by the embodiments of the present invention also have the above technical effects.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flowchart of a bad block marking method according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating a method for polling an operating status of a target according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a bad block marking apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a bad block marking apparatus according to an embodiment of the present invention;

FIG. 5 is a flowchart illustrating marking a data block corresponding to a read operation according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating marking a data block corresponding to a write operation according to an embodiment 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention discloses a bad block marking method, a bad block marking device, bad block marking equipment and a readable storage medium, and aims to improve the backup efficiency and accuracy of an IP address.

Referring to fig. 1, a bad block marking method provided by an embodiment of the present invention includes:

s101, obtaining the execution time of target operation;

s102, judging whether the execution time exceeds a preset first threshold value; if yes, executing S103; if not, executing S103;

s103, judging whether the target operation is finished or not; if yes, no operation is performed; if not, executing S104;

and S104, polling the state of the target operation, and marking the data block corresponding to the target operation as a bad block when the detection times exceed a preset second threshold value.

In the present embodiment, the target operation is a target operation. Specifically, the execution process of the target operation can be monitored by presetting a corresponding monitoring process, so that the execution time of the target operation can be directly known, and the execution time of the target operation is compared with a preset first threshold value; when the execution time exceeds a preset first threshold and the current target operation is not completed, the current target operation does not complete the corresponding operation within a preset time length, and then the target operation is polled and detected, and whether the execution is completed or not is executed.

In the polling detection process, the target operation may be executed completely, and when the target operation is executed completely, the detection is stopped; and when the current target operation is not executed, namely the execution is failed, marking the data block corresponding to the target operation as a bad block.

It should be noted that the sizes of the first threshold and the second threshold may be flexibly adjusted according to the usage, and therefore, the present specification is not limited thereto. In order to improve detection efficiency, the time unit of polling detection may be set to the millisecond level or the microsecond level.

As can be seen, the present embodiment provides a bad block marking method, where when an execution time of a target operation exceeds a preset first threshold and the target operation is not completed, a data block corresponding to the target operation is not marked as a bad block, but a state of the target operation is polled and detected, and until a detection number exceeds a preset second threshold, the data block corresponding to the target operation is marked as a bad block; and in the detection process, the target operation can be executed and completed at any time. The execution time of the target operation may be influenced by the external influence of the current application environment, such as too high temperature, and thus it is not always possible to fail the execution. Sufficient execution time is given to the target operation, so that the target operation influenced by external force can be executed, and normal data blocks can be prevented from being marked as bad blocks; the execution state of the target operation is judged by a double detection method, and whether the data block corresponding to the target operation is a bad block is further judged, so that the accuracy of bad block marking can be improved, and the waste of storage space is avoided.

Based on the foregoing embodiments, it should be noted that the polling to detect the target operation includes:

and sending a detection command according to a preset period, acquiring a return signal, and determining the state of the target operation according to the return signal, wherein the state of the target operation is finished or unfinished.

The polling detects the state of the target operation, and marks the data block corresponding to the target operation as a bad block when the detection times exceed a preset second threshold, comprising the following steps:

referring to fig. 2, fig. 2 is a flowchart illustrating polling to detect an operation status of a target according to an embodiment of the present invention.

S1, sending a detection command according to a preset period and acquiring a return signal;

s2, judging whether the return signal is consistent with a preset completion signal or not; if yes, go to S3; if not, go to S4;

s3, determining the state of the target operation as finished, and stopping sending the detection command;

s4, judging whether the detection times exceed a second threshold value; if yes, go to S5; if not, returning to S1;

and S5, determining that the state of the target operation is incomplete, and marking the data block corresponding to the target operation as a bad block.

Based on any of the above embodiments, it should be noted that before marking the data block corresponding to the target operation as a bad block, the method further includes:

judging whether a data object exists in a data block corresponding to the target operation;

if yes, migrating the data object to a redundant data block, and executing the step of marking the data block corresponding to the target operation as a bad block.

Wherein, still include:

and when the data block corresponding to the target operation does not store the data object, the step of marking the data block corresponding to the target operation as a bad block is executed.

Specifically, when the target operation is not completed, that is, the target operation fails to be executed, the data block corresponding to the target operation needs to be marked as a bad block. If a data object exists in the data block corresponding to the target operation, in order to ensure that the data object is not damaged, the data object needs to be migrated to the redundant data block, and then the data block corresponding to the target operation is marked as a bad block. The redundant data block is other available data blocks in the solid-state disk.

Based on any of the above embodiments, it should be noted that the target operation includes: any one or combination of a read operation, a write operation, and an erase operation.

In the following, a bad block marking apparatus provided by an embodiment of the present invention is introduced, and a bad block marking apparatus described below and a bad block marking method described above may be referred to each other.

Referring to fig. 3, an embodiment of the present invention provides a bad block marking apparatus, including:

Wherein the marking module is specifically configured to:

and sending a detection command according to a preset period, acquiring a return signal, and determining the state of the target operation according to the return signal, wherein the state of the target operation is finished or unfinished.

Wherein the marking module comprises:

the communication unit is used for sending the detection command according to a preset period and acquiring the return signal;

the first judgment unit is used for judging whether the return signal is consistent with a preset completion signal or not;

a completion determining unit, configured to determine that the target operation is completed and stop sending the detection command when the return signal is consistent with a preset completion signal;

the second judging unit is used for judging whether the detection times exceed the second threshold value or not when the return signal is inconsistent with a preset completion signal; if not, entering the communication unit.

And the incomplete determining unit is used for determining that the state of the target operation is incomplete when the detection times exceed the second threshold value, and marking the data block corresponding to the target operation as a bad block.

Wherein, still include:

the data object judging module is used for judging whether a data object exists in the data block corresponding to the target operation;

and the execution module is used for migrating the data object to a redundant data block when the data object is stored in the data block corresponding to the target operation, and marking the data block corresponding to the target operation as a bad block.

It can be seen that, this embodiment provides a bad block marking device, including: the device comprises an acquisition module, a judgment module and a marking module. Firstly, an acquisition module acquires the execution time of target operation; then judging whether the execution time exceeds a preset first threshold value by a judging module; when the execution time exceeds a preset first threshold, the marking module judges whether the target operation is finished, when the target operation is not finished, the marking module polls the state of the target operation, and when the detection times exceeds a preset second threshold, the marking module marks the data block corresponding to the target operation as a bad block. Therefore, all modules are in work of division and cooperation and each takes its own role, so that the accuracy of bad block marking can be improved, and the waste of storage space is avoided.

In the following, a bad block marking device provided by an embodiment of the present invention is introduced, and a bad block marking device described below and a bad block marking method and apparatus described above may be referred to each other.

Referring to fig. 4, an embodiment of the present invention provides a bad block marking apparatus, including:

In the following, a readable storage medium provided by an embodiment of the present invention is introduced, and a readable storage medium described below and a bad block marking method, apparatus, and device described above may be referred to each other.

A readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the bad block marking method according to any of the embodiments described above.

Based on any of the above embodiments, the data block marking method provided in the present specification can be implemented in the following manner. If the execution time of the read operation and the write operation of the solid state disk are respectively T_RAnd T_PPolling detection time is T_PollThe maximum number of detections is 255.

When marking is performed on a data block corresponding to a read operation, the processing flow is shown in fig. 5, and in fig. 5, a read NAND indicates a read operation. The treatment process comprises the following steps:

preset NAND read time T_RThen, whether the detection is finished or not is detected;

if the data transmission is finished, carrying out data transmission;

if not, interval T_PollTime is detected once, if the detection times exceed 255(check Max), reading is considered to be failed, and a data block corresponding to the current reading operation is marked as a bad block; if the read is completed during the polling detection period, the read is successful, and a completion message is returned.

When marking is performed on a data block corresponding to a write operation, the processing flow refers to fig. 6, and in fig. 6, a write NAND indicates a write operation. The treatment process comprises the following steps:

preset write NAND time T_PThen, whether the detection is finished or not is detected;

if the completion is finished, returning a completion message;

if not, interval T_PollTime is detected once, if the detection times exceed 255(check Max), the writing is considered to be failed, and the data block corresponding to the current reading operation is marked as a bad block; if the write is completed during the polling detection period, the write succeeds, and a completion message is returned.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.