WO2016078420A1

WO2016078420A1 - Virtual machine processing method and virtual computer system

Info

Publication number: WO2016078420A1
Application number: PCT/CN2015/083227
Authority: WO
Inventors: 王燊
Original assignee: 华为技术有限公司
Priority date: 2014-11-19
Filing date: 2015-07-02
Publication date: 2016-05-26
Also published as: CN104461685A; CN104461685B

Abstract

A virtual machine processing method and a virtual computer system. The method comprises: receiving, by a virtual file system of a virtual machine, a file command for operating a user file of the virtual machine (S501), the file command carrying a file path of the user file of the virtual machine in the virtual file system; forwarding, by the virtual file system, the file command for operating the user file of the virtual machine to a storage virtualization layer (S502); and converting, by a cluster file system of the storage virtualization layer, the file command for operating the user file of the virtual machine into an IO command for operating a physical disk of a storage device according to the file path of the user file of the virtual machine in the virtual file system and a first correlation between the user file of each virtual machine and a physical disk space (S503). When a user deletes a user file, a cluster file system or a distributed file system can recycle a data region of a physical disk occupied by the user file in real time, thereby improving the utilization rate of a storage space of a virtual machine.

Description

Virtual machine processing method and virtual computer system

The present application claims priority to Chinese Patent Application No. 201410663419.5, entitled "Virtual Machine Processing Method and Virtual Computer System", filed on November 19, 2014, the entire contents of which is incorporated herein by reference. in.

Technical field

The embodiments of the present invention relate to computer technologies, and in particular, to a virtual machine processing method and a virtual computer system.

Background technique

Virtualization technology has become more and more widely used due to its advantages of improving resource utilization and reducing system management costs.

Usually, multiple virtual machines can be run in one computer, and each file machine runs several file systems. For example, Windows (Windows) virtual machine runs New Technology File System (NTFS). Take NTFS as an example. The other file systems have the same principle. NTFS is used to receive file commands sent by the user to operate the user files, and convert the above file commands into virtual ones according to the correspondence between the user files and the IO of the virtual disk. The IO command for the operation of the disk IO, where the user file refers to the file presented by the virtual machine to the user, and after the storage virtualization layer receives the IO command for operating the IO of the virtual disk, according to the correspondence between the virtual disk and the volume file Or the correspondence between the virtual disk and the block device, converting the IO command into a file command for operating the volume file or the block device, the cluster file system or the distributed file system, according to the volume file or the block device and the physical disk IO Correspondence, convert file commands that operate on volume files or block devices into physical disks IO operation command, thus, achieved in response to a user operation.

However, in the prior art, when a user deletes or moves a certain file, real-time reclaim space cannot be realized, so that the utilization rate of the virtual machine's storage resources is not high.

Summary of the invention

The embodiment of the invention provides a virtual machine processing method and a virtual computer system, which can improve the utilization rate of the storage resources of the virtual machine.

A first aspect of the embodiments of the present invention provides a virtual machine processing method, which is applied to a virtual computer system, where the system includes a virtual machine, a storage virtualization layer, a storage device, and a computing device, where the virtual machine is based on the computing device and The storage device generates, the virtual machine includes a virtual file system, and the storage virtualization layer includes a cluster file system, configured to allocate physical disk space of the storage device to each user file of each virtual machine. The methods include:

The virtual file system of the virtual machine receives a file command for operating a user file of the virtual machine, where the file command carries a file path of the user file of the virtual machine in the virtual file system;

The virtual file system forwards the file command for operating the user file of the virtual machine to the storage virtualization layer;

The cluster file system of the storage virtualization layer is based on a file path of the user file of the virtual machine in the virtual file system, and a first correspondence between a user file of each virtual machine and a physical disk space. The file command for operating the user file of the virtual machine is converted into an IO command that operates on the physical disk of the storage device.

In conjunction with the first aspect, in a first possible implementation, the method further includes:

Receiving, by the virtual file system, a request to create a user file of the virtual machine;

Transmitting, by the virtual file system, the request for creating a user file of the virtual machine to the storage virtualization layer;

The cluster file system of the storage virtualization layer allocates a corresponding physical disk space to a user file of the virtual machine;

The storage virtualization layer establishes a first correspondence between the user file of the virtual machine and the physical disk space in the cluster file system, and records the first correspondence.

In conjunction with the first possible implementation of the first aspect, in a second possible implementation, the method further includes:

The storage virtualization layer further performs user file isolation processing when establishing a first correspondence between the user file of the virtual machine and the physical disk space, and the user file isolation processing is used for the user of the virtual machine. The file points to a unique physical disk space.

With reference to the second possible implementation of the first aspect, in a third possible implementation, the storage virtualization layer creates a folder corresponding to the virtual machine on the cluster file system, and records the a second correspondence between the virtual machine and the folder of the virtual machine;

Creating a user file of the virtual machine in a folder of the virtual machine, where the virtual machine The file path of the user file in the cluster file system includes a path of a folder corresponding to the virtual machine and a file path of a user file of the virtual machine in the virtual file system;

The storage virtualization layer records, in the cluster file system, a first correspondence between a file path of the user file of the virtual machine in the cluster file system and the allocated physical disk space.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation, the cluster file system of the storage virtualization layer is in the virtual file system according to a user file of the virtual machine a path, and a first correspondence between the user file of each virtual machine and the physical disk space, converting a file command for operating the user file of the virtual machine into an IO command for operating the physical disk of the storage device, include:

Determining, by the cluster file system, a folder of the virtual machine according to a second correspondence between the virtual machine and a folder of the virtual machine;

Generating a file path of the user file of the virtual machine in the cluster file system according to a path of a folder of the virtual machine and a file path of a user file of the virtual machine in the virtual file system;

a first file corresponding to a file path of the user file of the virtual machine in the cluster file system, and a file path of the user file of the virtual machine in the cluster file system and the allocated physical disk space Converting a file command to operate the user file of the virtual machine into an IO command to operate on a physical disk of the storage device.

A second aspect of the embodiments of the present invention provides a virtual computer system, where the system includes a virtual machine, a storage virtualization layer, a storage device, and a computing device, where the virtual machine is generated based on the computing device and the storage device, The virtual machine includes a virtual file system, and the storage virtualization layer includes a cluster file system for allocating physical disk space of the storage device to each user file of each virtual machine, where

a virtual file system of the virtual machine, configured to receive a file command for operating a user file of the virtual machine, where the file command carries a file path of a user file of the virtual machine in the virtual file system, And the file command for operating the user file of the virtual machine is forwarded to the storage virtualization layer;

The storage virtualization layer is configured to: according to a file path of the user file of the virtual machine in the virtual file system, and a first correspondence between a user file of each virtual machine and a physical disk space, The file command for the user file operation of the virtual machine is converted into an IO command that operates on the physical disk of the storage device.

With reference to the second aspect, in a first possible implementation, the virtual file system of the virtual machine is further configured to receive a request for creating a user file of the virtual machine, and forward the request for creating a user file of the virtual machine to The storage virtualization layer;

The storage virtualization layer is further configured to allocate a corresponding physical disk space to the user file of the virtual machine; and establish a first correspondence between the user file of the virtual machine and the physical disk space in the cluster file system And recording the first correspondence.

With reference to the first possible implementation of the second aspect, in a second possible implementation, the storage virtualization layer is further configured to establish a user file of the virtual machine and a first space of the physical disk space. In the corresponding relationship, user file isolation processing is performed, and the user file isolation processing is used to point the user file of the virtual machine to a unique physical disk space.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the storage virtualization layer is specifically configured to create a folder corresponding to the virtual machine on the cluster file system, and Recording a second correspondence between the virtual machine and a folder of the virtual machine; creating a user file of the virtual machine in a folder of the virtual machine, where a user file of the virtual machine is in the cluster A file path in the file system includes a path of a folder corresponding to the virtual machine and a file path of a user file of the virtual machine in the virtual file system; and a user of the virtual machine is recorded in the cluster file system The first correspondence between the file path in the cluster file system and the allocated physical disk space.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation, the storage virtualization layer is specifically configured to use a second correspondence between the virtual machine and a folder of the virtual machine Determining a folder of the virtual machine; generating a user file of the virtual machine according to a path of a folder of the virtual machine and a file path of a user file of the virtual machine in the virtual file system a file path in the cluster file system; a file path in the cluster file system according to a user file of the virtual machine, and a file path and allocation of the user file of the virtual machine in the cluster file system The first correspondence of the physical disk space converts the file command for operating the user file of the virtual machine into an IO command for operating the physical disk of the storage device.

The virtual machine processing method and the virtual computer system provided by the embodiment of the present invention receive a file command for operating a user file of the virtual machine through the virtual file system of the virtual machine, and the file command carries the file of the virtual machine user file in the virtual file system. Path; the virtual file system forwards file commands for operating the user files of the virtual machine to the storage virtualization layer; the cluster file system of the storage virtualization layer is based on the file path of the virtual machine's user files in the virtual file system, and each Virtual machine user The first correspondence between the file and the physical disk space converts the file command for operating the user file of the virtual machine into an IO command for operating the physical disk of the storage device. When a user deletes a user file, the cluster file system or the distributed file system can reclaim the data area of the physical disk occupied by the user file in real time, thereby improving the utilization of the storage space of the virtual machine.

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 embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural diagram of a virtual computer system in the prior art;

2 is a schematic flowchart of a virtual machine processing method in the prior art;

3 is a schematic structural diagram of a virtual machine computing system according to the present invention;

4 is a schematic flowchart of Embodiment 1 of a virtual machine processing method according to the present invention;

FIG. 5 is a schematic flowchart of Embodiment 2 of a method for processing a virtual machine according to the present invention;

FIG. 6 is a schematic flowchart of Embodiment 3 of a method for processing a virtual machine according to the present invention;

7 is a schematic flowchart of Embodiment 4 of a method for processing a virtual machine according to the present invention;

FIG. 8 is a schematic structural diagram of an embodiment of file isolation according to the present invention; FIG.

FIG. 9 is a schematic structural diagram of another embodiment of file isolation according to the present invention; FIG.

FIG. 10 is a schematic structural diagram of still another embodiment of a virtual computer system according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a schematic structural diagram of a virtual computer system in the prior art. As shown in FIG. 1 , FIG. 1 takes virtual machine as two virtual machines as examples, namely virtual machine 1 and virtual machine 2, and each virtual machine includes two. Presented to the user file, assuming that the two user files in the virtual machine 1 are the user file A and the user file B respectively, and the two files in the virtual machine 2 are the user file C and the user file D, respectively. In the prior art, when When the user deletes the file A, the processing flow in the virtual machine is as shown in FIG. 2, and FIG. 2 is in the prior art. Schematic diagram of the virtual machine processing method:

S201: The NTFS receives the file command of the user to delete the user file A.

NTFS manages the correspondence between user files and the IO of the virtual disk of virtual machine 1.

S202: The NTFS converts the file command for deleting the user file A into an IO command for modifying the virtual disk metadata area corresponding to the user file A according to the correspondence between the user file A and the virtual disk data area of the virtual machine 1.

That is, the state of the virtual disk data area corresponding to the user file A in the metadata area of the virtual disk is changed from unavailable to available. Essentially, the file command to delete user file A is converted to an IO command that modifies the metadata area of the virtual disk.

S203: The NTFS sends an IO command for modifying the virtual disk metadata area to the storage virtualization layer.

S204: The storage virtualization layer converts the IO command of modifying the metadata area of the virtual disk into reading the volume file or the block device according to the correspondence between the IO of the virtual disk and the volume file or the correspondence between the IO of the virtual disk and the block device. Write a command.

S205: The storage virtualization layer sends a read/write command to the volume file or the block device to the cluster file system or the block file system.

S206: The cluster file system or the block file system converts the read/write command of the volume file or the block device into an operation of the IO of the physical disk, thereby implementing a response to the user operation.

However, in the above process, when the user file A needs to be deleted, only the metadata area of the virtual disk is modified, and the metadata area of the physical disk managed by the underlying cluster file system or the block file system is not The modification is performed. Therefore, for the cluster file system or the block file system, the user file A in the virtual machine 1 cannot be deleted. Therefore, the physical disk corresponding to the user file A cannot be recovered in time, and the physical file corresponding to the user file A cannot be obtained. Disks are used by other virtual machines, resulting in low utilization of virtual machine storage resources. The foregoing part is only described by taking the deletion of the user file A as an example, and the same problem exists for the operation of the user file, etc., and details are not described herein again. In addition, from the architecture shown in FIG. 1, it can be seen that the storage virtualization layer manages the correspondence between the IO and the volume file of the virtual disk, or the correspondence between the IO of the virtual disk and the block device, and stores The virtualization layer cannot know the correspondence between the user files in the virtual machine and the data area of the virtual disk. Therefore, the storage virtualization layer cannot process the user files in units of user files. For example, snapshot, encryption, and decryption of the specified file. Orientation, request splitting, and antivirus processing. In addition, in the above process, after multi-layer IO processing, CPU consumption is large, and file IO performance is lowered.

It can also be said that according to the above workflow, because the NTFS file system shields the user file operation downward, the following two functional problems are caused: First, the file view and the storage virtualization layer view in the virtual machine. The graphs cannot be one-to-one; second, the operation of a file in a virtual machine cannot be accurately perceived in the underlying storage virtualization layer. For example, deleting a file in a virtual machine cannot be perceived by the storage virtualization layer. It is impossible to release the corresponding space on the physical storage in real time.

Due to the existence of the above two problems, many file-based operations cannot achieve the intended purpose of the user. For example, after deleting a file or moving a file, the physical space cannot be released in time; the storage virtualization layer cannot back up a specific file specified by the user; a specific file cannot be shared between virtual machines, and so on. In addition, because there are multiple layers of conversion in the middle, it also consumes a lot of unnecessary computing resources. In order to overcome the above problems, the present invention modifies the architecture of the virtual machine. As shown in FIG. 3, FIG. 3 is a schematic structural diagram of a virtual machine computing system according to the present invention. The system shown in FIG. 3 includes a virtual machine, a storage virtualization layer, and a storage device and a computing device, wherein the virtual machine is generated based on the computing device and the storage device, the virtual machine includes a virtual file system, and the storage virtualization layer includes a cluster file system, and the physical disk space of the storage device is allocated to each virtual machine. For each file, the system shown in Figure 3 takes two virtual machines as examples, namely virtual machine 1 and virtual machine 2, each virtual machine contains two user files, assuming two of virtual machines 1 The user files are User File A and User File B. The two user files in VM 2 are User File C and User File D. When the user deletes User File A, the processing flow is shown in Figure 4. Figure 4 The flow chart of the first embodiment of the virtual machine processing method of the present invention is as follows:

S401: The virtual file system receives a file command sent by the user to delete the user file A of the virtual machine.

The file command carries the file path of the user file A of the virtual machine in the virtual file system.

S402: The virtual file system directly forwards the file command of deleting the user file A to the storage virtualization layer.

S403: The cluster file system of the storage virtualization layer is based on the file path of the virtual machine user file A in the virtual file system, and the first correspondence between the user file of each virtual machine and the physical disk space, and the user of the virtual machine The file command for file A to delete is converted into an IO command that operates on the physical disk of the storage device.

Specifically, the IO command that operates on the physical disk is an IO command that modifies the metadata area of the physical disk.

The response to the user operation is achieved by the steps S401 to S403 described above.

It can be seen that, in the foregoing process, based on the configuration of the storage system, when the user deletes the user file A, the cluster file system or the distributed file system of the storage virtualization layer can recover the data area of the physical disk occupied by the user file A in real time. , thereby increasing the utilization of the storage space of the virtual machine. The above is only an example of deleting a user file. The operation of moving a user file is similar, and is not described here. The virtual file system directly forwards the file command of the user to the user file to the storage virtualization layer. The storage virtualization layer manages the correspondence between the user file and the physical disk space. Therefore, the file view and storage virtualization in the virtual machine are performed. The layer view can correspond to one-to-one; the operation of a file in the virtual machine can be accurately perceived in the underlying storage virtualization layer. Therefore, the storage virtualization layer can process the user file in units of user files. For example, snapshots, encryption and decryption, request redirection, request splitting, and antivirus are processed in units of user files to facilitate file management.

In addition, in the above embodiment, since the IO processing is two layers less than the prior art, the CPU consumption can be reduced and the file IO performance can be improved.

The virtual machine computing system structure of the present invention keeps the file view in the virtual machine and the file view of the storage virtualization layer consistent, and enables the storage virtualization layer to perform finer storage management in a file unit than the prior art. Improve the flexibility of storage virtualization and reduce the occupation of computing resources for storage operations.

The embodiment shown in FIG. 4 is only described by taking the command of receiving a file for deleting a user file. The file command further includes: a file command for creating a user file, a file command for modifying a user file, a file command for querying a user file, and a user file for reading the user file. File commands, file commands for writing user files, file commands for locking user files, and so on. Regardless of the file command, the processing method is similar in the present invention. The following is a file command for operating the user file. The process flow of the virtual machine of the present invention is described. FIG. 5 is a second embodiment of the virtual machine processing method of the present invention. The structure of the virtual computer system in this embodiment is similar to that of FIG. 3, and is not described here again. The method in this embodiment is shown in FIG. 5:

S501: The virtual file system of the virtual machine receives a file command for operating a user file of the virtual machine.

The file command carries the file path of the virtual machine's user file in the virtual file system.

S502: The virtual file system forwards the file command for operating the user file of the virtual machine to the storage virtualization layer.

S503: The cluster file system of the storage virtualization layer performs the virtual user file according to the path of the virtual machine user file in the virtual file system and the first correspondence between the user file and the physical disk space of each virtual machine. The file command of the operation is converted into an IO command that operates on the physical disk of the storage device.

The response to the user operation is achieved by the steps S501 to S503 described above.

In the method of the embodiment, the virtual file system directly forwards the file command of the user to the user file to the storage virtualization layer, and the storage virtualization layer manages the correspondence between the user file and the physical disk space, and therefore, in the virtual machine. File view and storage virtualization layer view can be one-to-one correspondence The storage virtualization layer can process user files in units of user files, such as snapshots, encryption and decryption, request redirection, request splitting, and antivirus processing in units of user files, which facilitates management of files. And because IO processing is two layers less than the prior art, it can reduce CPU consumption and improve file IO performance.

In the above embodiment, the process of creating a user file of the virtual machine is as follows. The specific process is as follows: FIG. 6 is a schematic flowchart of the third embodiment of the virtual machine processing method of the present invention:

S601: The virtual file system receives a request to create a user file of the virtual machine.

S602: The virtual file system forwards a request for creating a user file of the virtual machine to the storage virtualization layer.

S603: The cluster file system of the storage virtualization layer allocates a corresponding physical disk space for the user file of the virtual machine.

S604: The storage virtualization layer establishes a first correspondence between the user file of the virtual machine and the physical disk space in the cluster file system, and records the first correspondence.

Through the above steps S601 to S604, the user file of the virtual machine can be created, and the first correspondence can be used when the user file of the virtual machine is deleted, read, or written.

In the foregoing embodiment, the storage virtualization layer performs user file isolation processing when establishing the first correspondence between the user file of the virtual machine and the physical disk space, and the user file isolation processing is used to point the virtual machine user file to the unique file. The physical disk space ensures file isolation between different virtual machines and prevents virtual machines from accessing files outside of the permissions.

For example, FIG. 7 is a schematic flowchart of a fourth embodiment of the method for processing a virtual machine according to the present invention. FIG. 8 is a schematic diagram of a file isolation method according to the present invention. Schematic diagram of the structure: Referring to FIG. 7 and FIG. 8, the flow of this embodiment is as follows:

S701: The storage virtualization layer creates a folder corresponding to the virtual machine on the cluster file system, and records a second correspondence between the virtual machine and the virtual machine folder.

According to the second correspondence, when the user files of the virtual machine are created, all of them are created in the folder of the virtual machine corresponding to the virtual machine.

S702: Create a user file of the virtual machine in a folder of the virtual machine.

The file path of the virtual machine user file in the cluster file system includes the path of the folder corresponding to the virtual machine and the file path of the virtual machine user file in the virtual file system.

For example, the path of the folder corresponding to the virtual machine is /datastore_1/VM1/ (this path can be changed according to the product requirements), and the file path of the virtual machine user file in the virtual file system is: c:\windows\test.txt, The file path of the virtual machine user file in the cluster file system is: /datastore_1/VM1/windows/test.txt.

S703: The storage virtualization layer records, in the cluster file system, a first correspondence between a file path of the virtual machine user file in the cluster file system and the allocated physical disk space.

The present invention further provides a storage virtual machine layer for user file isolation processing, and a file isolation processing by using a custom metadata file. Referring to FIG. 9, FIG. 9 is a schematic structural diagram of another embodiment of file isolation according to the present invention; The metadata file records the correspondence between the virtual machine file and the physical disk, permissions, and differential data. The metadata can be used to share the access file by using the metadata. During the running of the virtual machine, the metadata file is first created according to the file operation. The path of the data file is consistent with the path of the first implementation; the path information of the virtual machine file corresponding to the data file is recorded in the metadata file. For example, the file path in the virtual machine is: c:\windows\test.txt; the path of the data file on the cluster file system is: /datastore_1/shared/windows/test.txt; the path of the metadata file is: /datastore_1 /VM1/windows/test.meta, the path information of the metadata file is: /datastore_1/shared/windows/test.txt.

File isolation can be achieved through the above two methods to prevent the virtual machine from accessing files other than the permission.

On the basis of the foregoing embodiment, the specific implementation of S503 in the embodiment shown in FIG. 5 is as follows: the cluster file system determines the folder of the virtual machine according to the second correspondence between the virtual machine and the folder of the virtual machine; The path of the folder of the machine and the file path of the user file of the virtual machine in the virtual file system, the file path of the user file of the virtual machine in the cluster file system; the file path of the user file in the cluster file system according to the virtual machine And a first correspondence between the file path of the virtual machine user file in the cluster file system and the allocated physical disk space, and the file command for operating the user file of the virtual machine is converted into a physical to the storage device The IO command that the disk is operating on.

The present invention further provides an embodiment of a virtual computer system. Referring to FIG. 3, the system includes a virtual machine, a storage virtualization layer, a storage device (LUN), and a computing device (not shown). The virtual machine is based on the computing device and the foregoing The storage device generates, the virtual machine includes a virtual file system, and the storage virtualization layer includes a cluster file system, configured to allocate a physical disk space of the storage device to each user file of each virtual machine, where the virtual machine is a virtual file system, configured to receive a file command for operating a user file of the virtual machine, where the file command carries a file path of the user file of the virtual machine in the virtual file system, and performs the foregoing user file of the virtual machine The file command of the operation is forwarded to the storage virtualization layer; the storage virtualization layer is used for the file path in the virtual file system according to the user file of the virtual machine, and the user of each virtual machine. The first correspondence between the file and the physical disk space converts the file command for operating the user file of the virtual machine into an IO command for operating the physical disk of the storage device.

In the above embodiment, the virtual file system of the virtual machine is further configured to receive a request for creating a user file of the virtual machine, and forward the request for creating a user file of the virtual machine to the storage virtualization layer; the storage virtualization layer further And allocating a corresponding physical disk space for the user file of the virtual machine; establishing a first correspondence between the user file of the virtual machine and the physical disk space in the cluster file system, and recording the first correspondence.

In the above embodiment, the storage virtualization layer is further configured to perform user file isolation processing when establishing a first correspondence between the user file of the virtual machine and the physical disk space, where the user file isolation processing is used to The user file of the machine points to a unique physical disk space.

In the above embodiment, the storage virtualization layer is specifically configured to create a folder corresponding to the virtual machine on the cluster file system, and record a second correspondence between the virtual machine and the folder of the virtual machine; a user file of the virtual machine is created in a folder of the virtual machine, wherein a file path of the user file of the virtual machine in the cluster file system includes a path of a folder corresponding to the virtual machine and a user file of the virtual machine in the virtual a file path in the file system; the first corresponding relationship between the file path of the user file of the virtual machine in the cluster file system and the allocated physical disk space is recorded in the cluster file system.

In the above embodiment, the storage virtualization layer is specifically configured to determine a folder of the virtual machine according to a second correspondence between the virtual machine and a folder of the virtual machine; and according to the path of the folder of the virtual machine and the foregoing a file path of the virtual machine user file in the virtual file system, generating a file path of the user file of the virtual machine in the cluster file system; a file path in the cluster file system according to the user file of the virtual machine, and Converting, by the user file of the virtual machine, a file path of the user file of the virtual machine to a physical disk of the storage device, in a first correspondence between the file path in the cluster file system and the allocated physical disk space. The IO command to operate.

The foregoing system embodiment is correspondingly used to implement the technical solution of the method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.

10 is a schematic structural diagram of still another embodiment of a virtual computer system according to the present invention. As shown in FIG. 10, the system of this embodiment includes a memory 1010 and a processor 1020. The memory 1010 may include random access memory, flash memory, read only memory, and programmable. Read only memory, nonvolatile memory or registers, etc. The processor 1020 may be a Central Processing Unit (CPU). Memory 1010 Used to store executable instructions. The processor 1020 can execute executable instructions stored in the memory 1010, for example, the processor 1020 is configured to receive a file command to operate a user file of the virtual machine, and the file command carries a file path of the user file of the virtual machine in the virtual file system. The file command that operates the user file of the virtual machine is forwarded to the storage virtualization layer; the file path in the virtual file system according to the virtual machine's user file, and the first user disk and physical disk space of each virtual machine Correspondence, the file command that operates the user file of the virtual machine is converted into an IO command that operates on the physical disk of the storage device.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A virtual machine processing method, characterized by being applied to a virtual computer system, the system comprising a virtual machine, a storage virtualization layer, a storage device, and a computing device, the virtual machine being based on the computing device and the storage device The virtual machine includes a virtual file system, and the storage virtualization layer includes a cluster file system, configured to allocate a physical disk space of the storage device to each user file of each virtual machine, where the method includes:

Receiving a file command for operating a user file of the virtual machine, where the file command carries a file path of a user file of the virtual machine in the virtual file system;

The virtual file system forwards the file command for operating the user file of the virtual machine to the storage virtualization layer;

The cluster file system of the storage virtualization layer is based on a file path of the user file of the virtual machine in the virtual file system, and a first correspondence between a user file of each virtual machine and a physical disk space. The file command for operating the user file of the virtual machine is converted into an IO command that operates on the physical disk of the storage device.
The method of claim 1 further comprising:

Receiving, by the virtual file system, a request to create a user file of the virtual machine;

Transmitting, by the virtual file system, the request for creating a user file of the virtual machine to the storage virtualization layer;

The cluster file system of the storage virtualization layer allocates a corresponding physical disk space to a user file of the virtual machine;

The storage virtualization layer establishes a first correspondence between the user file of the virtual machine and the physical disk space in the cluster file system, and records the first correspondence.
The method of claim 2, further comprising:

The storage virtualization layer further performs user file isolation processing when establishing a first correspondence between the user file of the virtual machine and the physical disk space, and the user file isolation processing is used for the user of the virtual machine. The file points to a unique physical disk space.
The method according to claim 3, wherein the storage virtualization layer performs user file isolation processing, including:

The storage virtualization layer creates a folder corresponding to the virtual machine on the cluster file system, and records a second correspondence between the virtual machine and a folder of the virtual machine;

Creating a user file of the virtual machine in a folder of the virtual machine, where the virtual machine The file path of the user file in the cluster file system includes a path of a folder corresponding to the virtual machine and a file path of a user file of the virtual machine in the virtual file system;

The storage virtualization layer records, in the cluster file system, a first correspondence between a file path of the user file of the virtual machine in the cluster file system and the allocated physical disk space.
The method according to claim 4, wherein the cluster file system of the storage virtualization layer is based on a file path of a user file of the virtual machine in the virtual file system, and a user file of each virtual machine. And the first command of the physical disk space, the file command for operating the user file of the virtual machine is converted into an IO command for operating the physical disk of the storage device, including:

Determining, by the cluster file system, a folder of the virtual machine according to a second correspondence between the virtual machine and a folder of the virtual machine;

Generating a file path of the user file of the virtual machine in the cluster file system according to a path of a folder of the virtual machine and a file path of a user file of the virtual machine in the virtual file system;

a first file corresponding to a file path of the user file of the virtual machine in the cluster file system, and a file path of the user file of the virtual machine in the cluster file system and the allocated physical disk space Converting a file command to operate the user file of the virtual machine into an IO command to operate on a physical disk of the storage device.
A virtual computer system, the system comprising a virtual machine, a storage virtualization layer, a storage device, and a computing device, the virtual machine being generated based on the computing device and the storage device, the virtual machine including a virtual machine a file system, the storage virtualization layer includes a cluster file system, configured to allocate a physical disk space of the storage device to each user file of each virtual machine, where

a virtual file system of the virtual machine, configured to receive a file command for operating a user file of the virtual machine, where the file command carries a file path of a user file of the virtual machine in the virtual file system, And the file command for operating the user file of the virtual machine is forwarded to the storage virtualization layer;

The storage virtualization layer is configured to: according to a file path of the user file of the virtual machine in the virtual file system, and a first correspondence between a user file of each virtual machine and a physical disk space, The file command for the user file operation of the virtual machine is converted into an IO command that operates on the physical disk of the storage device.
The system of claim 6 wherein said virtual machine's virtual file system And a method for receiving a request for creating a user file of the virtual machine, and forwarding the request for creating a user file of the virtual machine to the storage virtualization layer;

The storage virtualization layer is further configured to allocate a corresponding physical disk space to the user file of the virtual machine; and establish a first correspondence between the user file of the virtual machine and the physical disk space in the cluster file system And recording the first correspondence.
The system according to claim 7, wherein the storage virtualization layer is further configured to perform user file isolation processing when establishing a first correspondence between a user file of the virtual machine and the physical disk space. The user file isolation process is used to point the user file of the virtual machine to a unique physical disk space.
The system according to claim 8, wherein the storage virtualization layer is specifically configured to create a folder corresponding to the virtual machine on the cluster file system, and record the virtual machine and the virtual machine. a second correspondence of the folder; creating a user file of the virtual machine in a folder of the virtual machine, wherein a file path of the user file of the virtual machine in the cluster file system includes the virtual a path of a folder corresponding to the machine and a file path of the user file of the virtual machine in the virtual file system; recording, in the cluster file system, a file of the user file of the virtual machine in the cluster file system The first correspondence between the path and the allocated physical disk space.
The system according to claim 9, wherein the storage virtualization layer is specifically configured to determine a folder of the virtual machine according to a second correspondence between the virtual machine and a folder of the virtual machine; Generating, according to the path of the folder of the virtual machine and the file path of the user file of the virtual machine in the virtual file system, a file path of the user file of the virtual machine in the cluster file system; The file path of the user file of the virtual machine in the cluster file system, and the first correspondence between the file path of the user file of the virtual machine in the cluster file system and the allocated physical disk space, A file command that operates on a user file of the virtual machine is converted into an IO command that operates on a physical disk of the storage device.