WO2016188200A1 - Method and device for implementing partition switching - Google Patents

Abstract

A method and device for implementing partition switching. The method comprises: when the size of a first partition mirror image file cannot meet a system requirement, establishing, according to the system requirement, a second partition mirror image file, and mapping the second partition mirror image file to be continuous (100); mounting the second partition mirror image file, mapped to be continuous, to a third partition (101); and establishing a new file system on the mounted second partition mirror image file (102).

Description

Method and device for realizing partition switching Technical field

This application relates to, but is not limited to, the field of partition applications.

Background technique

As a device with more daily applications, an intelligent terminal generally includes a data partition and a cache partition. Take an Android phone (or a tablet) as an example. The data partition is used to install the system and store application data. The cache partition is used to store temporary data, for example, a temporary over-the-air software upgrade (FOTA) package. Some low-end smart devices that have a large market share, in order to achieve effective cost control, generally use less storage media, for example, using 4 gigabytes (GB) of storage media as data partitions and caches. (cache) partition can be planned partition. Due to the small number of storage media, when the size of the data partition and the cache partition are determined to be initialized, the partition size cannot be adjusted. The following problems are likely to occur: when the mobile phone is upgraded, the upgrade package needs to be stored through a larger cache partition. The cache partition has a large storage space. As the number of applications increases or the installed application increases, the data partition cannot meet the requirements of the installation application. If the cache partition is small, the upgrade package cannot be downloaded, which affects the system upgrade.

In the foregoing method, when the size of the data partition and the cache partition can be determined, the size of the initial partition is unreasonable, and the storage space is insufficient during the process of installing the application or downloading the upgrade package, which affects the installation application or the system upgrade. Reduce the user's experience with the phone.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

This paper provides a method and device for implementing partition switching, which can solve the problem of insufficient data partition or cache partition space and improve user experience.

A method for implementing partition switching includes:

When the size of the first partition image file cannot meet the system requirements, the second partition image file is created according to the system requirements, and the second partition image file is mapped to be continuous;

The mount is mapped to a contiguous second partition image file to the third partition;

Create a new file system on the completed second partition image file.

Optionally, mapping the second partition image file to consecutive includes:

In secure mode, all memory blocks of the second partition image file are mapped to contiguous on the block device in the operating system kernel.

Optionally, the method further includes:

Mapping the first partition image file to be continuous;

When the new file system is established, the content of the first partition image file is transferred to the image file of the second partition at the block device level.

Optionally, the method further includes: when the size of the first partition image file cannot meet the system requirement, before the second partition image file is created according to the system requirement, and the second partition image file is mapped to be continuous, the method further includes:

Creating the first partition image file according to the size of the first partition, and packaging the created first partition image file into the third partition;

The first partition image file is mounted according to a directory associated with the first partition image file established on the third partition.

Optionally, before the content of the first partition image file is transferred to the image file of the second partition at the block device level, the method further includes:

Obtaining all storage blocks of the first partition image file on the block device;

Reading the content of the first partition image file from a file level;

The content of the image file of the first partition read from the file level is rewritten from the block device level to the first partition image file according to the storage block included in the first partition image file on the block device.

Optionally, after the new file system is established, the method further includes:

Delete the first partition image file.

Optionally, after the new file system is created on the mounted second partition image file, the method further includes:

The name of the second partition image file is replaced with the name of the first partition image file to start the new file system according to the name of the first partition image file.

An apparatus for implementing zone switching includes: establishing a partition unit, a mounting unit, and establishing a system unit; wherein

Establish a partition unit, set to: when the size of the first partition image file cannot meet the system requirements, create a second partition image file according to the system requirements, and map the second partition image file to be continuous;

Mounting unit, set to: mount the mapping to a continuous second partition image file to the third partition;

Establish a system unit, set to: create a new file system on the second partition image file that is mounted.

Optionally, the establishment of the partition unit is set to,

When the size of the first partition image file cannot meet the system requirements, the second partition image file is created according to the system requirements;

In secure mode, all memory blocks of the second partition image file are mapped to contiguous on the block device in the operating system kernel.

Optionally, the device further includes a mapping unit and a transfer unit; wherein

a mapping unit, configured to: map the first partition image file to be continuous;

The transfer unit is configured to: when the new file system is established, transfer the content of the first partition image file to the image file of the second partition at the block device level.

Optionally, the device further includes: a packaging unit and a directory mounting unit; wherein

Creating a packaging unit, configured to: create the first partition image file according to the size of the first partition, and package the created first partition image file into the third partition;

The directory mounting unit is configured to: mount the first partition image file according to a directory associated with the first partition image file established on the third partition.

Optionally, the device further includes an acquiring unit and a reading and writing unit; wherein

An obtaining unit, configured to: after the transfer unit transfers the content of the first partition image file to the image file of the second partition at the block device level, acquire all the storage blocks of the first partition image file on the block device;

a reading and writing unit, configured to: read the content of the first partition image file from a file level; and read the content of the image file of the first partition from a file level, according to the first partition image file on the block device The included memory block is rewritten from the block device level to the first partition image file.

Optionally, the device further includes a deleting unit, configured to: after the establishing the system unit establishes a new file system, deleting the first partition image file.

Optionally, the establishing system unit is further configured to replace the name of the second partition image file with the name of the first partition image file after establishing a new file system on the completed second partition image file. To start the new file system based on the name of the first partition image file.

A computer readable storage medium storing computer executable instructions for performing the method of any of the above.

Compared with the related art, the technical solution of the present application includes: when the size of the first partition image file cannot meet the system requirements, the second partition image file is created according to the system requirement, and the second partition image file is mapped to be continuous; the mount mapping is continuous. The second partition image file is transferred to the third partition; a new file system is created on the completed second partition image file. The method of the embodiment of the present invention switches the first partition image file and the second partition image file that do not meet the system requirements by establishing a file system in the second partition image file, thereby realizing the adjustment of the partition size and avoiding the planned data partition. The fixed size of the cache partition affects the application installation or upgrade package download, which improves the user experience.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

FIG. 1 is a flowchart of a method for implementing partition switching according to an embodiment of the present invention;

2 is a structural block diagram of an apparatus for implementing zone switching according to an embodiment of the present invention;

3 is a flow chart of a method according to a first embodiment of the present invention;

4 is a schematic diagram showing the distribution of a first partition and a third partition according to an embodiment of the present invention;

Figure 5 is a flow chart of a method in accordance with a second embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

FIG. 1 is a flowchart of a method for implementing zone switching according to an embodiment of the present invention. As shown in FIG. 1 , the method includes:

Step 100: When the size of the first partition image file cannot meet the system requirements, create a second partition image file according to the system requirement, and map the second partition image file to be continuous;

In this step, mapping the second partition image file to continuous includes:

In secure mode, all memory blocks of the second partition image file are mapped to contiguous on the block device in the operating system kernel.

Mapping to continuous here means logically arranging all the storage blocks of the partition so that all the storage blocks of the second partition image file are logically continuous.

Step 101: The mount is mapped to a continuous second partition image file to the third partition.

Step 102: Create a new file system on the second partition image file that is successfully mounted.

Among them, after the establishment of a new file system, it also includes: starting a new file system.

The new file system that is started up to build includes:

Replace the name of the second partition image file with the name of the first partition image file to start the new file system based on the name of the first partition image file.

When the file system established on the second partition is used, the method of the embodiment of the present invention completes the switching between the first partition and the second partition.

The method of the embodiment of the invention further includes:

Mapping the first partition image file to be continuous;

When a new file system is created, the contents of the first partition image file are transferred to the image file of the second partition at the block device level.

The method of mapping the first partition image file to the contiguous method is the same as the mapping of the second partition image file. In the security mode, all the storage blocks of the first partition image file are mapped to consecutive blocks on the block device in the operating system kernel. .

In this embodiment, before step 100, the method further includes:

Making a first partition image file according to the size of the first partition, and packaging the created first partition image file into the third partition;

The first partition image file is mounted according to the directory associated with the first partition image file created on the third partition.

The mounting of the third partition is exactly the same as that of the existing common partition, and will not be described here. The directory associated with the first partition is generated by packaging the created image file into the image of the second partition.

Before the content of the first partition image file is transferred to the image file of the second partition at the block device level, the method of the embodiment of the present invention further includes:

Obtaining all the storage blocks of the first partition image file on the block device;

Reading the contents of the first partition image file from the file level;

The content of the image file of the first partition read from the file level is rewritten from the block device level to the first partition image file according to the storage block included in the first partition image file on the block device.

After the new file system is established, the method of the embodiment of the present invention further includes:

Delete the first partition image file.

The method of the embodiment of the present invention switches the first partition image file and the second partition image file that do not meet the system requirements by establishing a file system in the second partition image file, thereby realizing the adjustment of the partition size and avoiding the planned data partition. The fixed size of the cache partition affects the application installation or upgrade package download, which improves the user experience.

2 is a structural block diagram of an apparatus for implementing zone switching according to an embodiment of the present invention. As shown in FIG. 2, the method includes a partitioning unit 201, a mounting unit 202, and an establishing system unit 203.

The partition unit 201 is set to be configured to: when the size of the first partition image file cannot meet the system requirements, establish a second partition image file according to the system requirement, and map the second partition image file to Continued

The establishment partition unit 201 is set to,

When the size of the first partition image file cannot meet the system requirements, the second partition image file is created according to the system requirements;

In secure mode, all memory blocks of the second partition image file are mapped to contiguous on the block device in the operating system kernel.

The mounting unit 202 is configured to: mount the second partition image file mapped to the contiguous second partition image file to the third partition;

The system unit 203 is set up to: establish a new file system on the second partition image file that is successfully mounted.

The establishing system unit 203 is further configured to replace the name of the second partition image file with the name of the first partition image file after the new file system is created on the mounted second partition image file, to mirror the first partition image. The name of the file starts a new file system.

The apparatus of the embodiment of the present invention further includes a mapping unit 204 and a forwarding unit 205;

The mapping unit 204 is configured to: map the first partition image file to be continuous;

The transferring unit 205 is configured to: when the new file system is created, transfer the content of the first partition image file to the image file of the second partition at the block device level.

The device of the embodiment of the present invention further includes a packaging unit 206 and a directory mounting unit 207;

The packaging unit 206 is configured to: create a first partition image file according to the size of the first partition, and package the created first partition image file into the third partition;

The directory mount unit 207 is configured to mount the first partition image file according to the directory associated with the first partition image file created on the third partition.

The device of the embodiment of the present invention further includes an obtaining unit 208 and a reading and writing unit 209;

The obtaining unit 208 is configured to: after the transfer unit 205 transfers the content of the first partition image file to the image file of the second partition at the block device level, acquire all the storage blocks of the first partition image file on the block device;

The reading and writing unit 209 is configured to: read the content of the first partition image file from the file level; the content of the image file of the first partition read from the file level, according to the storage included in the block device of the first partition image file The block rewrites the first partition image file from the block device level.

The apparatus of the embodiment of the present invention further includes a deleting unit 210, configured to delete the first partition image file after the establishing system unit 210 establishes a new file system.

The following description will be made by way of examples.

Example 1

This embodiment is a clear and detailed description of the method of the embodiment of the present invention by performing the partitioning and mounting of the mobile phone. FIG. 3 is a flowchart of the method according to the first embodiment of the present invention. As shown in FIG. 3, the method includes:

Step 300: Create a first partition image file according to the first partition size, and package the created first partition image file into the third partition.

Step 301: Download the third partition to the mobile phone, and mount the third partition.

Step 302: Mount the first partition image file according to the directory associated with the first partition image file created on the third partition.

4 is a schematic diagram of distribution of a first partition and a third partition according to an embodiment of the present invention. As shown in FIG. 4, the third partition is mounted by a common partition, and the third partition size is a sum of a mobile cache partition and a data partition. The first partition of this embodiment uses the space on the third partition.

Example 2

This embodiment describes the method of the embodiment of the present invention by taking the first partition as an example, and FIG. 5 is a flowchart of the method according to the second embodiment of the present invention. As shown in FIG. 5, when the size of the first partition image file cannot be satisfied, When required by the system, including:

Step 500: Obtain all storage blocks of the first partition image file on the block device.

The image file is contiguous from the file point of view, but the storage from the block device may be discrete, so all the storage blocks of the first partition image file on the block device need to be obtained. They may be one-by-one intervals, similar to 1- 3, 10-11.

Step 501: Map the first partition image file to be continuous;

Step 502: After reading the content of the first partition image file from the file level, write the content of the image file back to the first partition at the block device level; here, the content of the image file is written back to the first partition at the block device level. According to the obtained first partition image file, all the storage blocks on the block device are performed.

From the file point of view, the image file of the first partition is not encrypted, but from the perspective of the block device, the file content is encrypted, so the content should be read out from the file level. Cleverly bypassing the encryption of the file system;

Step 503: Create a second partition image file according to system requirements, obtain all storage blocks of the second partition image file on the block device, and map the second partition image file to be continuous;

Optionally, mapping the second partition image file to be continuous includes: in the security mode, all the storage blocks of the second partition image file are mapped to be consecutive on the block device in the operating system kernel.

Partition switching is not possible during system operation. There are many services in the system that use partitions and must be restarted to safe mode. Safe mode has a specific partition that does not load encryption. This embodiment needs to consider the case of the first partition encryption when it is executed.

Step 504: Mount the first partition image file and the second partition image file as block devices.

Step 505: Create a new file system on the mounted second partition image file; here, the second partition image file is used as a new image file for file system installation.

Step 506: Transfer the content included in the first partition image file to the second partition image file, and delete the first partition image file.

Step 507: Replace the name of the second partition image file with the name of the first partition image file.

Step 508: The mobile phone starts a new file system according to the name of the first partition image file.

The switching of the first partition image file and the second partition image file is implemented by this embodiment.

In the above embodiment, the first partition is a system data partition, and is mounted on the third partition. The third partition is divided into data blocks occupied by the data partition, and the other storage areas are used as cache partitions. When the mobile phone receives an upgrade package, the cache partition is insufficient. When the upgrade package is stored, the user is notified by the embodiment of the present invention to perform the partition size switching, that is, the second partition image file is created; if the data partition does not have enough space for the second partition image file to be created, the first partition image needs to be mirrored. Some applications in the file are unloaded Load to meet space size requirements. After the second partition image file is created, a new file system is created and booted to complete the partition switch. When the size of the data partition is insufficient, after the size of the second partition image file is adjusted according to the method in this embodiment, partition switching is performed to obtain a data partition that meets the requirements.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The embodiment of the present invention switches the first partition image file and the second partition image file that do not meet the system requirements, and implements the adjustment of the partition size, thereby avoiding the application installation or upgrade due to the fixed size of the planned data partition and the cache partition. Package downloads improve the user experience.

Claims (15)

A method for implementing partition switching includes: When the size of the first partition image file cannot meet the system requirements, the second partition image file is created according to the system requirements, and the second partition image file is mapped to be continuous; The mount is mapped to a contiguous second partition image file to the third partition; Create a new file system on the completed second partition image file. The method of claim 1, wherein the mapping the second partition image file to include: In secure mode, all memory blocks of the second partition image file are mapped to contiguous on the block device in the operating system kernel. The method of claim 1 or 2, further comprising: Mapping the first partition image file to be continuous; When the new file system is established, the content of the first partition image file is transferred to the image file of the second partition at the block device level. The method according to claim 1 or 2, wherein, when the size of the first partition image file cannot meet the system requirement, the second partition image file is created according to the system requirement, and the second partition image file is mapped to be continuous, The method also includes: Creating the first partition image file according to the size of the first partition, and packaging the created first partition image file into the third partition; The first partition image file is mounted according to a directory associated with the first partition image file established on the third partition. The method of claim 3, wherein before the transferring the content of the first partition image file to the image file of the second partition at the block device level, the method further comprises: Obtaining all storage blocks of the first partition image file on the block device; Reading the content of the first partition image file from a file level; The content of the image file of the first partition read from the file level, according to the first partition mirror A memory block, such as a file contained on a block device, is rewritten from the block device level to the first partition image file. The method of claim 1 wherein after the new file system is created, the method further comprises: Delete the first partition image file. The method of claim 1 or claim 6, wherein after the establishing a new file system on the mounted second partition image file, the method further comprises: The name of the second partition image file is replaced with the name of the first partition image file to start the new file system according to the name of the first partition image file. An apparatus for implementing zone switching includes: establishing a partition unit, a mounting unit, and establishing a system unit; wherein Establish a partition unit, set to: when the size of the first partition image file cannot meet the system requirements, create a second partition image file according to the system requirements, and map the second partition image file to be continuous; Mounting unit, set to: mount the mapping to a continuous second partition image file to the third partition; Establish a system unit, set to: create a new file system on the second partition image file that is mounted. The apparatus according to claim 8, wherein said establishment partition unit is set to When the size of the first partition image file cannot meet the system requirements, the second partition image file is created according to the system requirements; In secure mode, all memory blocks of the second partition image file are mapped to contiguous on the block device in the operating system kernel. The apparatus according to claim 8 or 9, further comprising a mapping unit and a transfer unit; wherein a mapping unit, configured to: map the first partition image file to be continuous; The transfer unit is configured to: when the new file system is established, transfer the content of the first partition image file to the image file of the second partition at the block device level. The apparatus according to claim 8 or 9, further comprising: a packaging unit and a directory mounting unit; wherein Creating a packaging unit, configured to: create the first partition image file according to the size of the first partition, and package the created first partition image file into the third partition; The directory mounting unit is configured to: mount the first partition image file according to a directory associated with the first partition image file established on the third partition. The apparatus according to claim 11, wherein the apparatus further comprises an acquisition unit and a read/write unit; wherein An obtaining unit, configured to: after the transfer unit transfers the content of the first partition image file to the image file of the second partition at the block device level, acquire all the storage blocks of the first partition image file on the block device; a reading and writing unit, configured to: read the content of the first partition image file from a file level; and read the content of the image file of the first partition from a file level, according to the first partition image file on the block device The included memory block is rewritten from the block device level to the first partition image file. The apparatus according to claim 8, further comprising a deleting unit configured to delete the first partition image file after the establishing system unit establishes a new file system. The apparatus according to claim 8 or 13, wherein the establishing system unit is further configured to replace the name of the second partition image file with a name after the new file system is created on the completed second partition image file The name of the first partition image file to start the new file system according to the name of the first partition image file. A computer readable storage medium storing computer executable instructions for performing the method of any of claims 1-7.

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