TWI802340B - Backing up and recovering method of file system and communication device thereof - Google Patents

Abstract

The present disclosure provides a backing up and recovering method of a file system. A detecting step is performed to dive a first processing unit to detect whether the file system is damaged, and then generate a detection result. A storage unit is configured to access a plurality of backup lists and a backup data corresponding to the file system. A transmitting step is performed to drive the first processing unit to transmit the detection result to a second processing unit. In response to the detection result being the file system is damaged, the second processing unit executes a system recovering step. The system recovering step includes recovering the file system according to the backup data backed up by one of the backup lists. In response to the detection result being that the file system is not damaged, the second processing unit executes a backup confirming step. The backup confirming step is performed to confirm whether the storage unit has the backup data. Therefore, the file system is backed up and recovered.

Description

File system backup and restoration method and communication device thereof

The present invention relates to a method for backing up and restoring a file system and its communication device, and in particular to a method for backing up and restoring an embedded file system and its communication device.

The embedded file system (Embedded File System; EFS) is a module for realizing file access in the embedded system (Embedded System). The embedded file system also provides management functions for file input and output, and provides file system support for embedded systems and devices. When the embedded system is under high temperature, unstable power supply, insufficient voltage load capacity, or insufficient battery power, it is easy to cause the system to repeatedly power off and restart. During the restart process, the internal parameters of the system may be lost, causing the system to return to the factory settings, or even the data is completely lost, making the system unable to start normally. In addition, most of the product defect reports show that the embedded file system is damaged or the system is incomplete, so the backup and restoration of the embedded file system is an extremely important function.

Existing backup and recovery technology only decides whether to use backup data to perform backup and recovery based on the last startup of the system. However, the backup data may be lost due to long-term storage, or be artificially modified and incomplete. Therefore, the existing backup and recovery technology still cannot determine whether the backup data exists or whether it is complete and undamaged, resulting in poor flexibility and requiring manual maintenance, thereby increasing maintenance costs.

In view of this, how to establish a file system backup and recovery method and its communication device that can simultaneously detect whether the system is damaged and confirm the existence of the backup is really eagerly awaited by the public, and it is also a goal that related companies must work hard to develop breakthroughs and direction.

Therefore, the object of the present invention is to provide a method for backup and recovery of a file system and its communication device, which uses the first processing unit to determine whether the file system is damaged, and restores the file system through the second processing unit and confirms the backup data at the same time Whether it exists, which can reduce the loss caused by the return of the product due to the damage of the file system. In addition, the backup and recovery method of the file system and the communication device thereof of the present invention can enable the equipment to restore the damaged file system in real time when the damage is detected.

According to an embodiment of the present invention, a method for backing up and restoring a file system is provided, which includes a detection step and a transmission step. The detection step is to drive a first operation processing unit to detect whether the file system stored in a storage unit is damaged, and then generate a detection result. The storage unit is used for accessing multiple backup lists and a backup data corresponding to the file system. The transmission step is to drive the first operation processing unit to transmit the detection result to a second operation processing unit unit. It should be noted that, when the detection result is that the file system is damaged, the second processing unit executes a system recovery step. The system restoration step includes restoring the file system according to the backup data backed up by one of the backup lists. In addition, when the detection result is not that the file system is damaged, the second operation processing unit executes a backup confirmation step. The backup confirmation step is to confirm whether the storage unit has backup data.

Thereby, the backup and restoration method of the file system of the present invention drives the second operation processing unit to perform the system recovery step or the backup confirmation step according to the detection result generated by the first operation processing unit, which can not only restore the damaged file system, but also It can ensure that the storage unit has backup data when the file system is damaged in the future, so as to avoid the situation that cannot be restored due to lack of backup data.

According to another embodiment of the present invention, a communication device is provided, which includes a storage unit, a first operation processing unit, and a second operation processing unit. The storage unit is used for accessing the file system, multiple backup lists and a backup data corresponding to the file system. The first operation processing unit is connected to the storage unit, and detects whether the file system is damaged to generate a detection result. The second operation processing unit is connected to the storage unit and the first operation processing unit and receives the detection result. It should be noted that, when the detection result is that the file system is damaged, the second processing unit executes a system recovery step. The system restoration step includes restoring the file system according to the backup data backed up by one of the backup lists. In addition, when the detection result is not that the file system is damaged, the second operation processing unit executes a backup confirmation step. The backup confirmation step is to confirm whether the storage unit has backup data.

In this way, the communication device of the present invention enables the second computing and processing unit to execute the system recovery step or the backup confirmation step according to the detection result generated by the first computing processing unit, so as not only to restore the damaged file system, but also to ensure that in the future When the file system is damaged, the storage unit stores the backup data, so as to avoid the situation that cannot be restored due to the lack of backup data.

Several embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details are included in the following narrative. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some commonly used structures and elements will be shown in a simple and schematic way in the drawings; and repeated elements may be denoted by the same reference numerals.

In addition, when a certain element (or unit or module, etc.) is "connected/connected" to another element herein, it may mean that the element is directly connected/connected to another element, or it may mean that a certain element is indirectly connected. /Connected to another element means that there is another element interposed between the element and another element. And when it is stated that an element is "directly connected/connected" to another element, it means that there is no other element interposed between the element and another element. The terms first, second, third, etc. are used to describe different components, and have no limitation on the components themselves. Therefore, the first component can also be called the second component. Moreover, the combination of components/units/circuits in this article is not a combination that is generally known, conventional or conventional in this field. Whether the components/units/circuits themselves are known or not can be used to determine whether the combination relationship is easily recognized by those in the technical field. Usually knowledgeable people do it easily.

Please refer to FIG. 1 , which is a schematic flowchart illustrating a method 100 for backing up and restoring a file system according to a first embodiment of the present invention. As shown in FIG. 1 , the file system backup and recovery method 100 includes a detection step S02 and a transmission step S04 .

The detection step S02 is to drive a first processing unit to detect whether the file system stored in a storage unit is damaged, and then generate a detection result 110, wherein the storage unit is used to access multiple backup lists and a backup data corresponding to the file system. The transmitting step S04 is to drive the first arithmetic processing unit to transmit the detection result 110 to a second arithmetic processing unit.

In detail, when the detection result 110 is that the file system is damaged (that is, the detection result 110 is "Yes"), the second processing unit executes a system recovery Repeat step S062. The system restoration step S062 includes restoring the file system according to the backup data backed up by one of the backup lists in the storage unit. When the detection result is not that the file system is damaged (that is, the detection result 110 is "No"), the second processing unit executes a backup confirmation step S064. The backup confirmation step S064 is to confirm whether the storage unit has backup data. In this way, the file system backup and recovery method 100 of the present invention drives the second calculation and processing unit to perform the system recovery step S062 or the backup confirmation step S064 according to the detection result 110 generated by the first calculation and processing unit, which can not only restore the damaged The file system can also ensure that the storage unit has backup data when the file system is damaged in the future, so as to avoid the situation that cannot be restored due to lack of backup data.

Please refer to FIG. 1 and FIG. 2 together, wherein FIG. 2 is a schematic diagram of a communication device 200 according to a second embodiment of the present invention. As shown in Figures 1 and 2, the communication device 200 can be used to implement the file system backup and recovery method 100 of the first embodiment, and includes a storage unit 300, a first processing unit 400 and a second calculation Processing unit 500.

The storage unit 300 includes a first storage block 310 and a second storage block 320 . The first storage block 310 is used for accessing a file system 311 . The second storage block 320 is used to access another file system 321 , and the file system 321 is used to access two backup lists 3211 , 3212 and a backup data 3213 .

The first processing unit 400 is connected to the storage unit 300 and detects whether the file system 311 is damaged to generate a detection result 110 . The second arithmetic processing unit 500 is connected to the storage unit 300 and the first arithmetic processing unit 400 , and receives the detection result 110 from the first arithmetic processing unit 400 . Specifically, the communication device 200 can be a modem, or a communication module inside other electronic devices, or a communication module installed on a vehicle, but the present invention is not limited thereto. The storage unit 300 can be a memory (Memory). The first operation processing unit 400 may be a modulator-demodulator (Modem) processor. The second operation processing unit 500 may be an application processor (Application Processor; AP). The file system 311 can be an embedded file system (Embedded File System; EFS), and the file system 321 can be an unsorted block image file system (Unsorted Block Image File System, UBIFS), but the present invention is not limited thereto.

When the detection result 110 is that the file system 311 is damaged, the second processing unit 500 executes the system recovery step S062. When the detection result 110 is not that the file system 311 is damaged, the second processing unit 500 executes the backup confirmation step S064. In this way, the communication device 200 of the present invention enables the second computing processing unit 500 to execute the system recovery step S062 or the backup confirmation step S064 according to the detection result 110 generated by the first computing processing unit 400, not only recovering the damaged file system 311, it can also ensure that when the file system 311 is damaged in the future, the storage unit 300 stores the backup data 3213, so as to avoid the situation that the recovery cannot be performed due to the lack of the backup data 3213.

Please refer to Fig. 2, Fig. 3 and Fig. 4 together, wherein Fig. 3 is a schematic flow chart showing the backup and recovery method 600 of the file system according to the third embodiment of the present invention; and Fig. 4 is a drawing A schematic diagram showing two backup lists 3211, 3212 and backup data 3213 of the file system 311 of the first storage block 310 and the file system 321 of the second storage block 320 in FIG. 2 . As shown in Figure 3, the file system backup and recovery method 600 of the third embodiment can be implemented by the communication device 200 of the second embodiment, and includes a detection step S12, a transmission step S14, a system recovery step S162 and a backup The confirmation step S164, wherein the detection step S12, a transmission step S14 and the backup confirmation step S164 are all the same as the steps corresponding to the file system backup and recovery method 100 in the first embodiment, and will not be repeated here.

The difference between the third embodiment and the first embodiment is that the system recovery step S162 may further include an object reset step S1622 , an object recovery step S1624 and a system restart step S1626 . The object resetting step S1622 is to drive the second processing unit 500 to delete the damaged file system 311 and reset a static object parameter set 3112 of the file system 311 . The object recovery step S1624 includes driving the second processing unit 500 to restore a dynamic object parameter set 3113 to the file system 311 according to the backup data 3213 backed up by one of the backup lists 3211 in the file system 321 . The system restart step S1626 is to drive the second arithmetic processing unit 500 to restart the recovered file system 311 .

In detail, the file system 311 in FIG. 4 may include a hardware identification code 3111, a static object parameter set 3112 and a dynamic object parameter set 3113, wherein the hardware identification code 3111 is defined by the manufacturer according to different product devices An identification code string, and the hardware identification code 3111 will be It is recorded in the file system 311; in other words, the file system 311 stores the hardware identification code 3111 of its corresponding product device. The static object parameter set 3112 is mainly related to firmware and can be created by the firmware, so the static object parameter set 3112 does not need to be restored to the file system 311 through the backup data 3213 . In the object reset step S1622, the second processing unit 500 first deletes the static object parameter set 3112 and the dynamic object parameter set 3113 of the damaged file system 311, and then creates the New static object parameter set 3112.

In addition, as can be seen from FIG. 2, the file system 321 accesses backup lists 3211, 3212 and backup data 3213, wherein the backup lists 3211, 3212 can respectively correspond to two hardware identification codes (Hardware Identification; HWID) and can list two dynamic Object labels L1, L2. For example, the backup list 3211 in FIG. 4 corresponds to the hardware identification code 3111 and lists the dynamic object label L1. The backup list 3212 corresponds to another hardware identification code (not shown separately), and lists another dynamic object label L2. The backup data 3213 in FIG. 4 stores a hardware identification code 3111 and three dynamic object parameters P1, P2, P3, wherein the dynamic object parameter set 3113 is composed of the dynamic object parameters P1, P2, P3.

Specifically, the dynamic object parameter set 3113 is written into the file system 311 during factory calibration, so the tags corresponding to all parameters of the dynamic object parameter set 3113 (ie, the dynamic object tag L1) will be recorded in the file system 321 One of the backup lists (namely the backup list 3211). In the present invention, according to different hardware identification codes, the dynamic object parameter groups selected during calibration are different, so each hardware identification code will correspond to a backup clear one. In other embodiments, the number of backup lists may be multiple, and the number of dynamic object parameters may be multiple, and the present invention is not limited thereto. Next, when the second processing unit 500 has created the new static object parameter set 3112 and restored the new dynamic object parameter set 3113 to the file system 311, the second processing unit 500 executes the system restart step S1626 to completely restore the file System 311. Thus, compared with the existing backup and recovery technology, the file system backup and recovery method 600 of the present invention selects the backup data 3213 backed up in the corresponding backup list 3211 according to the hardware identification code 3111 when restoring the file system 311, That is, the optimal recovery of the dynamic object parameter set 3113 can be carried out for a specific product device, and there is no need to restore the dynamic object parameters of other product devices to the file system 311, so the flexibility is high, and no manual maintenance is required, thereby reducing maintenance cost. In addition, since the file system 321 of the second storage block 320 stores multiple backup lists, the backup and restoration of the file system 311 of the first storage block 310 can support various product devices.

On the other hand, the backup data 3213 is prone to data loss due to long-term storage, or is incomplete due to artificial modification and product update. Please continue to refer to FIG. 3, in the backup confirmation step S164, when the second storage block 320 of the storage unit 300 does not store the backup data 3213, the second processing unit 500 executes a data backup step S182. When the backup data 3213 is stored in the second storage block 320 of the storage unit 300 and the backup data 3213 is incomplete or damaged, the second processing unit 500 executes a backup updating step S184. When the second storage block 230 of the storage unit 300 stores the backup data 2312, and the backup data When 3313 is complete and normal, the second processing unit 500 re-executes the detection step S12, so that the file system 311 can be restored immediately when it is damaged.

The data backup step S182 is to drive the second processing unit 500 to create a backup data 3213 according to the file system 311 , and store the backup data 3213 to the file system 321 of the second storage block 320 of the storage unit 300 . Specifically, the file system 311 is not damaged and stores the hardware identification code 3111, the static object parameter set 3112 and the dynamic object parameter set 3113, wherein the dynamic object parameter set 3113 is composed of three dynamic object parameters P1, P2, and P3 . In the data backup step S182, the second processing unit 500 selects the backup list 3211 according to the hardware identification code 3111 of the file system 311, and backs up the hardware identification code 3111 and the dynamic object parameters according to the dynamic object label L1 listed in the backup list 3211 P1, P2, P3 to create a backup data 3213. Next, the second arithmetic processing unit 500 re-executes the detection step S12.

Similarly, the backup update step S184 is to drive the second processing unit 500 to select the backup list 3211 according to the hardware identification code 3111 of the file system 311, and update the dynamic object parameters P1, P2, P3 to the backup data 3213, and then replace the previously incomplete or damaged backup data 3213. Next, the second arithmetic processing unit 500 re-executes the detection step S12. Thereby, compared with the existing backup and recovery technology, the file system backup and recovery method 600 of the present invention can also ensure that when the file system 311 is damaged in the future, the storage unit 300 stores the complete and latest backup data 3213, thereby avoiding encountered due to The backup data 3213 is missing and recovery cannot be performed.

It can be seen from the above embodiments that the present invention has the following advantages: First, the system recovery step and the backup confirmation step are respectively executed according to different detection results, which not only restores the damaged file system, but also ensures that when the file system is damaged in the future, the storage There are backup data in the unit, so as to avoid the situation that the recovery cannot be performed due to the lack of backup data. Second, optimize the restoration of the dynamic object parameter set for a specific product device, and then do not need to restore all the dynamic object parameters of all product devices to the file system, so the flexibility is high, and no manual maintenance is required, thereby reducing maintenance cost. Third, since the file system of the second storage block has multiple backup lists, multiple product devices can be supported in the backup and recovery of the file system of the first storage block.

Although the present invention has been disclosed above in terms of implementation, it is not intended to limit the present invention. Anyone skilled in this art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be defined by the appended patent application scope.

100,600: Backup and recovery method of file system

110: Test result

200: communication device

300: storage unit

310: the first storage block

311, 321: File systems

3111: hardware identification code

3112: static object parameter group

3113: Dynamic object parameter group

320: the second storage block

3211,3212: backup list

3213: backup data

400: the first operation processing unit

500: the second operation processing unit

S02, S12: detection steps

S04, S14: Transmission steps

S062, S162: System recovery steps

S1622: Object reset step

S1624: Object restoration step

S1626: System restart steps

S064, S164: backup confirmation steps

S182: Data backup steps

S184: Backup and update steps

L1, L2: dynamic object labels

P1, P2, P3: dynamic object parameters

Fig. 1 is a schematic flow diagram illustrating a method for backup and recovery of a file system according to the first embodiment of the present invention; Fig. 2 is a schematic diagram illustrating a communication device according to a second embodiment of the present invention; Fig. 3 is a schematic flow diagram illustrating a method for backup and recovery of a file system according to a third embodiment of the present invention; and FIG. 4 is a schematic diagram showing two backup lists and backup data of the file system of the first storage block and the file system of the second storage block in FIG. 2 .

100: Backup and recovery method of file system

110: Test result

S02: Detection step

S04: Transfer step

S062: System recovery steps

S064: backup confirmation step

Claims (14)

A file system backup and recovery method, comprising the following steps: a detection step, which is to drive a first computing processing unit to detect whether the file system stored in a storage unit is damaged, and then generate a detection result, wherein the storage unit is used for Accessing multiple backup lists and a backup data corresponding to the file system; and a transmission step, driving the first processing unit to transmit the detection result to a second processing unit; wherein, when the detection result is the file system When damaged, the second processing unit executes a system recovery step, the system recovery step includes restoring the file system according to the backup data backed up by one of the backup lists; wherein, when the detection result is not that the file system is damaged , the second processing unit executes a backup confirmation step, the backup confirmation step is to confirm whether the storage unit has the backup data; wherein, the backup lists correspond to plural hardware identification codes and respectively list plural dynamic object tags , the backup data stores one of the hardware identification codes and a plurality of dynamic object parameters. The backup and recovery method of the file system as described in Claim 1, wherein the system recovery step further includes: an object reset step, which is to drive the second processing unit to delete the file system and reset a static object of the file system Parameter set; an object recovery step, including driving the second computing processing unit according to the One of the backup data backed up by the backup list restores a dynamic object parameter set to the file system; and a system restart step is to drive the second processing unit to restart the file system. The method for backing up and restoring a file system as described in Claim 1, wherein, when the storage unit does not store the backup data, the second processing unit executes a data backup step; and when the storage unit stores the backup data data and the backup data is incomplete or damaged, the second processing unit executes a backup update step. The method for backing up and restoring a file system as described in Claim 3, wherein the data backup step is to drive the second processing unit to create the backup data according to the file system, and store the backup data in the storage unit. The backup and recovery method of the file system as described in claim 4, wherein the file system stores the one of the hardware identification codes and the dynamic object parameters, and the second processing unit identifies the one of the hardware according to the The code selects one of the backup lists, and backs up the dynamic object parameters according to the dynamic object tag listed in the one of the backup lists to create the backup data. The backup and restoration method of the file system as described in claim 3, wherein the file system stores the one of the hardware identification codes and the dynamic object parameters, and the backup update step is to drive the second processing unit according to the One of the hardware identification codes selects the one of the backup lists, and updates the dynamic object parameters to the backup data according to the dynamic object tags listed in the one of the backup lists. The method for backing up and restoring a file system as described in Claim 1, wherein the storage unit includes: a first storage block for accessing the file system; and a second storage block for accessing another A file system, wherein the other file system is used to access the backup lists and the backup data. A communication device, comprising: a storage unit for accessing a file system, a plurality of backup lists corresponding to the file system and a backup data; a first processing unit connected to the storage unit and detecting whether the file system is damaged to generate a detection result; and a second processing unit, connected to the storage unit and the first processing unit and receiving the detection result; wherein, when the detection result is that the file system is damaged, the second processing unit Executing a system recovery step, the system recovery step includes restoring the file system according to the backup data backed up by one of the backup lists; wherein, when the detection result is not that the file system is damaged, the second operation The computing processing unit executes a backup confirmation step, the backup confirmation step is to confirm whether the storage unit has the backup data; wherein, the backup lists correspond to multiple hardware identification codes and respectively list multiple dynamic object tags, and the backup data One of the hardware identification codes and a plurality of dynamic object parameters are stored. The communication device as described in claim 8, wherein the system recovery step further includes: an object reset step, which is to drive the second computing processing unit to delete the file system and reset a static object parameter set of the file system; an object The restore step includes driving the second processing unit to restore a dynamic object parameter set to the file system according to the backup data backed up by one of the backup lists; and a system restart step is to drive the second processing unit to restart Start the file system. The communication device as described in claim 8, wherein, when the storage unit does not store the backup data, the second computing processing unit executes a data backup step; and when the storage unit stores the backup data and the backup data When incomplete or damaged, the second operation processing unit executes a backup update step. The communication device as described in claim 10, wherein the data backup step is to drive the second processing unit to create a file system according to the file system the backup data, and store the backup data in the storage unit. The communication device as described in claim 11, wherein the file system stores the one of the hardware identification codes and the dynamic object parameters, and the second processing unit selects the one of the hardware identification codes according to the one of the hardware identification codes The backup list, and back up the dynamic object parameters according to the dynamic object tag listed in one of the backup lists to create the backup data. The communication device as described in claim 10, wherein the file system stores the one of the hardware identification codes and the dynamic object parameters, and the backup update step is to drive the second computing processing unit according to the one of the hardware The identification code selects one of the backup lists, and updates the dynamic object parameters to the backup data according to the dynamic object tag listed in the one of the backup lists. The communication device as described in claim 8, wherein the storage unit includes: a first storage block for accessing the file system; and a second storage block for accessing another file system, wherein The other file system is used for accessing the backup lists and the backup data.

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