WO2017016139A1

WO2017016139A1 - System recovery method and apparatus

Info

Publication number: WO2017016139A1
Application number: PCT/CN2015/097345
Authority: WO
Inventors: 易鸿斌
Original assignee: 安一恒通（北京）科技有限公司
Priority date: 2015-07-28
Filing date: 2015-12-15
Publication date: 2017-02-02
Also published as: CN105095021A

Abstract

A system recovery method and apparatus. The method comprises: receiving a modification request (S110); and sending, if the modification request requests modification on a file of a preset directory, the modification request to a disk drive in which the file of the preset directory is located, to perform recovery (S120). Through recognition of a file of a preset directory, a modification request aimed at the file of the preset directory is directly sent to a disk drive corresponding to the file of the preset directory, so that a write back operation is prevented, and it is ensured that other files that do not need recovery are retained in the disk.

Description

System restoration method and device

Cross-reference to related applications

The present application claims the priority of the Chinese Patent Application No. 201510451492.0 filed on Jul. 28, 2015, the content of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of computers, and in particular, to a system restoration method and apparatus.

Background technique

At present, the existing system restoration method usually copies all the backed up system files to the system disk and restores the system at the level of the sector. However, since the restore method cannot distinguish between files and directories, there is no backup in the system file. The software or other data stored in the disk is completely lost, causing the user to reinstall the corresponding software after the system is restored, and since the software is reinstalled, the historical information recorded by the software is also disappeared, which affects the use of the software. It brings a lot of inconvenience to the user.

Summary of the invention

One of the technical problems solved by the present invention is that it is impossible to distinguish files and directories during system restoration, so that software that does not need to be restored and other data stored in the disk are all lost.

According to an aspect of the present invention, a system restoration method is provided, including:

Receiving a modification request;

If the modification request is a modification of a file of a predetermined directory, the modification request is sent to a disk drive where the file of the predetermined directory is located for restoration.

According to another aspect of the present invention, a system restoration apparatus is provided, comprising:

Means for receiving a modification request;

For modifying if the modification request is a modification to a file of a predetermined directory A device that requests a disk drive to which the file of the predetermined directory is located to be restored.

Since the modification request of the file of the predetermined directory is directly sent to the disk drive corresponding to the file of the predetermined directory by the identification of the file of the predetermined directory, the write-back operation is avoided, and at the same time, the disk is secured. Retention of other files that do not need to be restored.

Those skilled in the art will appreciate that although the following detailed description is made with reference to the illustrated embodiments and drawings, the invention is not limited to these embodiments. Rather, the scope of the invention is intended to be limited the scope of the invention

DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the Detailed Description of Description

FIG. 1 shows a flow chart of a system restoration method in accordance with an embodiment of the present invention.

FIG. 2 shows a flow chart of step S120 in the system restoration method according to an embodiment of the present invention.

FIG. 3 shows a block diagram of a system restoration apparatus in accordance with an embodiment of the present invention.

FIG. 4 is a flow chart showing a method for system restoration by taking a restoration system to protect a C disk from being modified as an example according to an embodiment of the invention.

The same or similar reference numerals in the drawings denote the same or similar components.

detailed description

Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as a process or method depicted as a flowchart. Although the flowcharts describe various operations as a sequential process, many of the operations can be implemented in parallel, concurrently or concurrently. In addition, the order of operations can be rearranged. The process may be terminated when its operation is completed, but may also have additional steps not included in the figures. The processing may correspond to methods, functions, procedures, subroutines, subroutines, and the like.

By "computer device", also referred to as "computer" in the context, is meant an intelligent electronic device that can perform predetermined processing, such as numerical calculations and/or logical calculations, by running a predetermined program or instruction, which can include a processor and Memory, executed by the processor in the memory The pre-stored surviving instructions are used to execute a predetermined process, or are executed by hardware such as an ASIC, an FPGA, a DSP, or the like, or a combination of the two. Computer devices include, but are not limited to, servers, personal computers, notebook computers, tablets, smart phones, and the like.

The computer device includes a user device and a network device. The user equipment includes, but is not limited to, a computer, a smart phone, a PDA, etc.; the network device includes but is not limited to a single network server, a server group composed of multiple network servers, or a cloud computing based computer Or a cloud composed of a network server, wherein cloud computing is a type of distributed computing, a super virtual computer composed of a group of loosely coupled computers. Wherein, the computer device can be operated separately to implement the present invention, and can also access the network and implement the present invention by interacting with other computer devices in the network. The network in which the computer device is located includes, but is not limited to, the Internet, a wide area network, a metropolitan area network, a local area network, a VPN network, and the like.

It should be noted that the user equipment, the network equipment, the network, and the like are merely examples, and other existing or future possible computer equipment or networks, such as those applicable to the present invention, are also included in the scope of the present invention. It is included here by reference.

The methods discussed below, some of which are illustrated by flowcharts, can be implemented in hardware, software, firmware, middleware, microcode, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware or microcode, the program code or code segments to carry out the necessary tasks can be stored in a machine or computer readable medium, such as a storage medium. The processor(s) can perform the necessary tasks.

The specific structural and functional details disclosed are merely representative and are for the purpose of describing exemplary embodiments of the invention. The present invention may, however, be embodied in many alternative forms and should not be construed as being limited only to the embodiments set forth herein.

It should be understood that although the terms "first," "second," etc. may be used herein to describe the various elements, these elements should not be limited by these terms. These terms are used only to distinguish one unit from another. For example, a first unit could be termed a second unit, and similarly a second unit could be termed a first unit, without departing from the scope of the exemplary embodiments. The term "and/or" package as used herein Including any and all combinations of one or more of the associated items listed.

It will be understood that when a unit is referred to as "connected" or "coupled" to another unit, it can be directly connected or coupled to the other unit, or an intermediate unit can be present. In contrast, when a unit is referred to as being "directly connected" or "directly coupled" to another unit, there is no intermediate unit. Other words used to describe the relationship between the units should be interpreted in a similar manner (eg "between" and "directly between" and "adjacent to" Than "directly adjacent to", etc.).

The terminology used herein is for the purpose of describing the particular embodiments, The singular forms "a", "an", It is also to be understood that the terms "comprising" and """ Other features, integers, steps, operations, units, components, and/or combinations thereof.

It should also be noted that, in some alternative implementations, the functions/acts noted may occur in a different order than that illustrated in the drawings. For example, two figures shown in succession may in fact be executed substantially concurrently or sometimes in the reverse order, depending on the function/acts involved.

The invention is further described in detail below with reference to the accompanying drawings.

1 is a flow chart of a system restoration method in accordance with one embodiment of the present invention.

As shown in FIG. 1, the system restoration method described in this embodiment includes:

S110. Receive a modification request.

S120. If the modification request is a modification to a file of a predetermined directory, send the modification request to a disk drive where the file of the predetermined directory is located for restoration.

The steps are further described in detail below.

In step S110, the modification request may be an operation request for reading, writing, or restoring the file, which is generally an I/O (input and output) manager sent by the user to the terminal through the application, and the I/O manager receives the modification request. .

In step S120, if the modification request is a modification to a file of a predetermined directory, setting a flag in the modification request; and sending the marked modification request to the pre- The disk drive where the files in the directory are located is restored. As shown in FIG. 2, the following steps may be specifically included:

S1201: Determine path information corresponding to the modified file in the modification request.

S1202: Determine, according to the path information, whether the modification request is a modification to a file in a predetermined directory, and if yes, perform steps S1203-S1204; if not, execute step S1205.

S1203. Set a flag in the modification request.

S1204. When it is detected that the marking is set in the modification request, the modification request is directly sent to a disk drive where the file of the predetermined directory is located for restoration.

S1205: Send the modification request to the restore system disk filter driver for restoration.

In step S120, it is identified whether the modification request is a modification of the file of the predetermined directory, generally at the file system level, first, the file full path name of the current modification request operation is obtained through the file object and the parent directory handle, and then, the target file name For comparison, if it is the same as the target file name, it is determined that the modification request is a modification of the file or the predetermined file of the predetermined directory, and at the same time, the location of the file corresponding to the same target file name of the I/O request packet of the current file operation is recorded. The file system filter driver may be employed to identify whether the modification request is a modification to the file of the predetermined directory, wherein the file system filter driver may include a conventional file system filtering framework or a new MiniFiter (micro filter) framework to identify whether the modification request is for a predetermined request. The modification of the file of the directory can also adopt the dispatch process driven by the HOOK (hook) file system, etc., wherein the dispatch process can be implemented by the dispatch function, and for each file system driver, the system will create a corresponding function object, in this The location of the MajorFunction (main function) of the drive object is stored with a dispatch function, which is exemplified by NTFS (New Technology File System) shown in Table 1 below, wherein the dispatch function corresponding to MajorFunction[00]0xf7361e01 is NtfFsdCreate; The dispatch function corresponding to MajorFunction[03]0xf733ef2f is NtfFsdRead; the dispatch function corresponding to MajorFunction[04]0xf733db4b is NtfFsdWrite.

Table 1: NTFS (New Technology File System)

3 is a block diagram of a system restoration apparatus in accordance with one embodiment of the present invention.

As shown in FIG. 3, the system restoration apparatus of this embodiment includes:

Means for receiving a modification request (hereinafter referred to as "receiving device") 110;

And if the modification request is a modification of a file of a predetermined directory, the disk drive to which the modification request is sent to the file of the predetermined directory is restored (hereinafter referred to as “identification and restoration device”) 120.

The device will be further described in detail below.

In the receiving device 110, the modification request may be an operation request for reading, writing or restoring a file, which is generally an I/O (input and output) manager sent by the user to the terminal through the application, and the I/O manager receives the modification. request.

In the identification and restoration device 120, if the modification request is a modification of a file of a predetermined directory, a flag is set in the modification request; and the disk drive in which the modified modification request is sent to the file in the predetermined directory is located Restore. As shown in FIG. 3, specifically, the following devices may be included:

The specific file identification device 1201 is configured to determine path information corresponding to the modified file in the modification request, and determine, according to the path information, whether the modification request is a modification to a file of a predetermined directory, and if yes, in the modification request Set the tag. For example, if the file in the c:\mydoc directory is modified when the request is modified, a mark is set to a position of the I/O request packet representing the modification operation, and then the modified request after the mark is sent to the lower layer driver. Sent to the disk operation pre-processing device 1202, wherein the next drive may be a file system, or other filter driver above the file system level. Specifically, the mark may be set in a reserved field in the I/O request, or may be set. In other fields, as long as the identification of the I/O request packet is not affected.

The disk operation pre-processing device 1202 is configured to detect whether a flag is set in the modification request, that is, whether a certain location of the I/O request packet is set with a flag, and if there is a flag, send the modification request directly to the The disk drive device 1203 where the c:\mydoc directory is located is restored, instead of restoring the system disk filter drive device 1204, so that the file modification operation for the c:\mydoc directory does not pass through the restore system and is not restored by the restore system. There is no corresponding mapping relationship. Therefore, when the system is restored by the embodiment of the present invention, there is no writeback operation for c:\mydoc.

Recovering the system disk filter driver 1204, if the modification request is not for the pre- The modification of the file of the directory is sent to the restore system disk filter driver for restoration.

The disk drive device 1203 directly modifies the files in the predetermined directory, and the restore system disk filter driver 1204 needs to establish a mapping relationship between the files in the predetermined directory and the backup files, and writes the backup files back to the disk drive device 1203.

The identification and restoration device 120 identifies whether the modification request is a modification of the file of the predetermined directory, generally at the file system level, first, obtaining the full path name of the file of the modification request operation by the file object and the parent directory handle, and then, with the target If the file name is the same as the target file name, it is determined that the modification request is a modification of the file or the predetermined file of the predetermined directory, and at the same time, the same target file name corresponding to the I/O request packet of the current file operation is recorded. position. The file system filter driver may be employed to identify whether the modification request is a modification to the file of the predetermined directory, wherein the file system filter driver may include a conventional file system filtering framework or a new MiniFiter (micro filter) framework to identify whether the modification request is for a predetermined request. The modification of the file of the directory may also adopt a dispatch process driven by a HOOK (hook) file system, etc., wherein the dispatch process can be implemented by a dispatch function.

In the prior art, the method for restoring the C disk generally backs up the modification operation of a certain sector of the C disk to a certain sector position of the D disk, and records the correspondence between the two locations. When performing the restoration operation, according to Corresponding relationship, the data content of the D disk sector is written back to the sector corresponding to the C disk to implement system restoration. As shown in FIG. 4, the embodiment of the present invention takes the restoration system to protect the C disk from being modified (but allows c:\mydoc to be modified) as an example. The system restoration method includes:

S410. The I/O manager receives the modification request sent by the user through an application programming interface (Application Programming Interface).

S420. Determine whether the modification request is a modification to a file in a predetermined directory. If yes, add a flag to the modification request, and then send the file through the file system dispatch function; if not, send the file system dispatch function.

S430. Detect whether there is a flag in the modification request, and if yes, execute S440; if not, execute S450.

S440. Send the modification request directly to the disk drive device 1203.

S450. Send the modification request to the restoration system disk filter driver 1204. The restore system disk filter driver 1204 writes the backup file back to the disk drive device 1203 according to the established mapping relationship.

It should be noted that the present invention can be implemented in software and/or a combination of software and hardware. For example, the various devices of the present invention can be implemented using an application specific integrated circuit (ASIC) or any other similar hardware device. In one embodiment, the software program of the present invention may be executed by a processor to implement the steps or functions described above. Likewise, the software program (including related data structures) of the present invention can be stored in a computer readable recording medium such as a RAM memory, a magnetic or optical drive or a floppy disk and the like. Additionally, some of the steps or functions of the present invention may be implemented in hardware, for example, as a circuit that cooperates with a processor to perform various steps or functions.

It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim. In addition, it is to be understood that the word "comprising" does not exclude other elements or steps. A plurality of units or devices recited in the system claims can also be implemented by a unit or device by software or hardware. The first, second, etc. words are used to denote names and do not denote any particular order.

While the invention has been shown and described with reference to the embodiments of the embodiments of the invention The protection sought herein is set forth in the appended claims.

Claims

A system restoration method includes:

Receiving a modification request;

If the modification request is a modification of a file of a predetermined directory, the modification request is sent to a disk drive where the file of the predetermined directory is located for restoration.
The method according to claim 1, wherein if said modification request is a modification of a file of a predetermined directory, the step of transmitting the modification request to a disk drive in which the file of the predetermined directory is located for restoration comprises :

If the modification request is a modification to a file of a predetermined directory, setting a flag in the modification request;

The disk drive after the marked modification request is sent to the file of the predetermined directory is restored.
The method according to claim 2, wherein said step of setting a flag in said modification request if said modification request is a modification of a file of a predetermined directory comprises:

Determining path information corresponding to the modified file in the modification request;

Determining, according to the path information, whether the modification request is a modification to a file of a predetermined directory, and if so, setting a flag in the modification request.
The method according to claim 2 or 3, wherein the step of transmitting the marked modification request to the disk drive of the file of the predetermined directory for restoration comprises:

When it is detected that the mark is set in the modification request, the modification request is directly sent to the disk drive where the file of the predetermined directory is located for restoration.
The method of any of claims 1-3, further comprising:

If the modification request is not a modification to a file of a predetermined directory, then the modification is requested Request to send to the restore system disk filter driver for restore.
A system restoration device includes:

Means for receiving a modification request;

And means for transmitting, to the disk drive where the file of the predetermined directory is located, if the modification request is a modification of a file of a predetermined directory.
The apparatus according to claim 6, wherein, if the modification request is a modification of a file of a predetermined directory, the means for transmitting the modification request to the disk drive in which the file of the predetermined directory is located is restored. :

Means for setting a flag in the modification request if the modification request is a modification to a file of a predetermined directory;

Means for restoring the marked modification request to the disk drive in which the file of the predetermined directory is located is restored.
The apparatus according to claim 7, wherein, if the modification request is a modification of a file of a predetermined directory, the means for setting a flag in the modification request comprises:

Means for determining path information corresponding to the modified file in the modification request;

And means for determining, according to the path information, whether the modification request is a modification to a file of a predetermined directory, and if so, setting a flag in the modification request.
The apparatus according to claim 7 or 8, wherein the means for restoring the disk drive for transmitting the marked modification request to the file of the predetermined directory comprises:

And means for transmitting, when the flag is set in the modification request, the modification request is directly sent to a disk drive in which the file of the predetermined directory is located.
The apparatus of any of claims 6-8, further comprising:

For modifying the file if the modification request is not a file of a predetermined directory A device that requests a restore to the restore system disk filter driver.
A computer readable storage medium comprising computer instructions, the method of any one of claims 1 to 5 being executed when the computer instructions are executed.
A computer program product, the method of any one of claims 1 to 5 being executed when the computer program product is executed.
A computer device comprising a memory and a processor, wherein the memory stores computer instructions, the processor being configured to perform the computer instructions to perform any of claims 1 to 5 The method described.