CN101430670B - I/O equipment reconstruction method and system in virtualization surroundings - Google Patents

Abstract

The invention relates to a method and system for reconfiguring I/O equipment in a virtualized environment, and the virtualized environment is a Xen virtualized environment. The method includes: step 1, the user virtual machine detects that the user's I/O idle storage resource is less than a critical value, and then sends a request to the privileged virtual machine to apply for an I/O storage resource, which includes the quantity of the applied I/O storage resource; step 2. The privileged virtual machine takes out the corresponding amount of I/O storage resources requested by the user virtual machine from the idle I/O storage resources and distributes them to the user virtual machine; step 3, the user virtual machine performs the corresponding amount of I/O storage resources Initialize, deploy the file system, and then install it into the root file system of the user virtual machine for use by the user. The invention realizes that the allocation of storage resources changes with the needs of users under the condition of being transparent to users, which can meet the needs of users without causing waste of storage resources.

Description

A method and system for reconfiguring I/O devices in a virtualized environment

technical field

The invention relates to a virtualization environment, in particular to a method and system for reconfiguring I/O equipment in a virtualization environment.

Background technique

Virtualization technology was born in the 1960s. IBM proposed the concept of virtualization and applied this technology to IBM's System/370 system. So far, virtualization technology has been applied in many industries and fields, and will be used more widely in the future. Through virtualization technology, the utilization rate of servers can be improved, the stability and robustness of services and the portability of software can be improved.

Computer I/O (input/output) technology is always a very important key technology in the development of computer technology. Its technical characteristics determine the processing capability of computer I/O, and then determine the overall performance and application environment of the computer. Fundamentally speaking, no matter now or in the future, I/O technology will restrict the application and development of computer technology, especially in the field of high-end computing.

To virtualize the I/O device, it is necessary to monitor the behavior of the user virtual machine, intercept the I/O operation of the user virtual machine, analyze and explain it, and then send it to the device driver, and the device driver completes the device operation. Among them, according to whether to modify the Guest OS (guest operating system), the virtualization of local devices can be divided into two categories: I/O device virtualization in full virtualization and I/O device virtualization in paravirtualization.

Paravirtualization is a concept proposed by Cambridge University, accompanied by the research and development of the Xen project. Like VmWare, Xen is also system-level virtualization software. Since the birth of Xen, it has quickly gained widespread attention and application with its excellent performance, and the concept of paravirtualization has also been deeply rooted in the hearts of the people. Its appearance is the result of research on how to improve the large performance loss caused by full virtualization.

Figure 1 shows the architecture of I/O virtualization in Xen. The bottom layer in the figure is the hardware resource. Xen VMM runs on the hardware resource, manages the hardware resource, and virtualizes several virtual hardware environments. In Xen VMM (Virtual Machine Monitor), multiple Guest OSs run on the virtual machine monitor (take XenLinux system as an example). Unmodified user applications run on the application layer of the Guest OS. There is a front-end device driver (Front-End) running in the kernel layer of the Guest OS, and the user application operates the device through the front-end device driver. The front-end device driver does not really operate the device, it realizes the real device operation through the back-end device driver (Back-End). The front-end device drivers (Front-End) are respectively located in VMI, VM2, and VM3, and VM1, VM2, and VM3 are respectively user virtual machines. The back-end device driver (Back-End) is located in VM0, and VM0 is a privileged virtual machine. VM0 (VM0 here refers to a special virtual machine in the xen virtualization environment, which must exist, and the administrator manages the virtual machine through the interface provided by the virtual machine) is a special Guest OS, also Call it a privileged Guest OS. It is called a privileged Guest OS because:

1. The VMM management program interface program, some resource management programs, and Guest OS management control programs all run on the application layer of VM0, that is, VM0 is the Guest OS with management authority;

2. VM0 can directly access peripheral devices, that is, it has the authority to manage and operate all peripheral devices.

In the kernel of VM0, a backend device driver service is running. Its responsibility is to accept the I/O operation request sent from other Guest OS, transfer it to the real device driver in VM0, and the real device driver will complete the operation on the device, and return the operation result returned from the real device driver to the front-end device driver.

In the use of virtualization, there is a notable feature: most of the I/O storage resources requested by users are wasted in many cases. This is because, during the process of using the virtual machine, the user's demand for I/O storage resources changes. For example, a user finds a good movie download site within a certain period of time and wants to download a lot of movies. At this time, a storage space of more than ten gigabytes or even hundreds of gigabytes is needed to store movies. After the user has watched these movies, they are all deleted. At this time, these large I/O storage resources are just useless. In order to ensure that users have enough space for downloading movies, users must apply for I/O storage resources according to their maximum possible space. Except for being used at certain times, these spaces are idle and wasted most of the time.

In order to solve this problem, the Xen virtualization platform provides a hot-swap mechanism for virtual I/O devices. Its core idea is that when the user feels that his storage space is insufficient and needs more storage space, he applies to the system administrator; after receiving the user's application, the system administrator checks whether there is enough free storage space, and if there is , then manually run the hot swap command to add new I/O storage resources to the user virtual machine, and then notify the user; the user initializes the new I/O storage resource in the virtual machine, deploys the file system, and then puts the new The storage space of the virtual machine is installed in the root file system of the virtual machine. In this way, the user can use the new storage space. After the user does not need these newly added storage spaces, he will uninstall the new I/O device from the root file system of his own virtual machine, and then notify the system administrator; The new virtual I/O device of the machine is unloaded, and then its space information is added to the hollow storage space.

Although the above method provides a mechanism for allocating storage space to users on demand, there are the following problems:

(1) Not transparent to users. The user needs to manually notify the system administrator, and also initialize and install the newly added virtual I/O device.

(2) There are high requirements for users. After a new virtual I/O device is added to the user virtual machine, the user needs to be able to initialize the new I/O device, deploy the file system, and install it into the root file system of the user virtual machine. And when the user no longer needs new storage space, it is necessary to unload the newly added storage space from the root file system of the user virtual machine, and then unload the new I/O device from the user virtual machine. All of these have high requirements on users, requiring users to have a deep understanding of operating systems and I/O device management and usage technologies. However, most users often cannot meet such high requirements, which severely limits the large-scale use of this method.

(3) Make the system administrator increase a lot of workload. In the process of adding and uninstalling virtual I/O devices, the participation of the system administrator is required, which adds a lot of workload to the system administrator. If the scale of the system is relatively large and the number of users is large, the resulting increased workload is unbearable for the system administrator. If the number of system administrators is greatly increased, the cost of system maintenance will increase significantly in connection with the increasing cost of human resources.

(4) Due to the increased workload of the system administrator, the system administrator may not be able to respond immediately to the user's request, so that the user's demand for new storage space cannot be quickly served. This will reduce the system's service quality to users, which will make users dissatisfied. At the same time, users will also reduce their requests for this service because the service cannot be satisfied quickly, thus limiting the use of this method.

Contents of the invention

In order to solve the above-mentioned technical problems, a method and system for reconfiguring I/O devices in a virtualized environment are provided, the purpose of which is to overcome the existing I/O device hot-plug mechanism of the Xen virtualization platform proposed above Shortcomings.

The present invention provides a method for I/O device reconstruction in a virtualized environment, the virtualized environment is a Xen virtualized environment, comprising:

Step 1, the user virtual machine detects that the user's I/O idle storage resource is less than a critical value, and then sends a request to the privileged virtual machine to apply for an I/O storage resource, which includes the amount of the requested I/O storage resource;

Step 2, the privileged virtual machine takes out the corresponding amount of I/O storage resources requested by the user virtual machine from the idle I/O storage resources and distributes them to the user virtual machine;

In step 3, the user virtual machine initializes a corresponding amount of I/O storage resources, deploys a file system, and then installs it into the root file system of the user virtual machine for use by the user.

In step 1, the user virtual machine determines the amount of I/O storage resources to apply to the privileged virtual machine according to the consumption speed of its idle I/O storage resources.

In step 1, a storage resource usage monitoring service program is installed in the user virtual machine, which is used to detect the amount of the user's I/O idle storage resources, and when it is detected that the user's I/O idle storage resources are less than a critical value, send The privileged virtual machine sends a request to apply for I/O storage resources;

In step 3, the storage resource usage monitoring service program is also used to initialize a corresponding number of I/O storage resources, deploy the file system, and then install it into the root file system of the user virtual machine for use by the user.

In step 2, the privileged virtual machine hot-inserts a corresponding amount of I/O storage resources into the user virtual machine, and notifies the user virtual machine.

In step 2, a storage resource management service program is installed in the privileged virtual machine, which is used to take out a corresponding amount of I/O storage resources requested by the user virtual machine from idle I/O storage resources and distribute them to the user virtual machine.

In step 2, the storage resource management service program is also used to hot-swap the resource into the user virtual machine and notify the user virtual machine.

The invention provides a method for I/O device reconstruction in a Xen virtualization environment, comprising:

Step 1, the user virtual machine detects that the user's I/O idle storage resources are greater than the critical value, then the user virtual machine unloads a certain amount of I/O idle storage resources, and sends a request to the privileged virtual machine to unload I/O storage resources, where Contains a specific amount of I/O storage resources that need to be offloaded;

In step 2, the privileged virtual machine reclaims a specific amount of I/O idle storage resources.

In step 1, the user virtual machine modifies the root file system of the user virtual machine and the corresponding information of the I/O device after offloading a certain amount of idle I/O storage resources.

In step 2, the privileged virtual machine hot-plugs a certain amount of I/O idle storage resources from the user virtual machine, and re-adds them to the idle I/O storage resources.

In step 1, a storage resource usage monitoring service program is installed in the user virtual machine, which is used to detect the number of user's I/O idle storage resources, and when it is detected that the user's I/O idle storage resources are greater than a critical value, Offload a specific amount of I/O idle storage resources and send a request for offloading I/O storage resources to the privileged virtual machine.

In step 1, the storage resource usage monitoring service program is also used to modify the root file system of the user virtual machine and the corresponding information of the I/O device after unloading a certain amount of idle I/O storage resources.

In step 2, a storage resource management service program is installed in the privileged virtual machine to reclaim a specific amount of I/O idle storage resources.

In step 2, the storage resource management service program is also used to hot-plug a certain amount of I/O idle storage resources from the user virtual machine, and re-add them to the idle I/O storage resources.

The invention provides a system for I/O device reconstruction in a Xen virtualization environment, including a user virtual machine and a privileged virtual machine,

The user virtual machine is used to send a request for applying for I/O storage resources to the privileged virtual machine when it detects that the user's idle I/O storage resource is less than a critical value, including the number of applied I/O storage resources;

The privileged virtual machine is used to take out the corresponding amount of I/O storage resources requested by the user virtual machine from idle I/O storage resources and assign them to the user virtual machine;

The user virtual machine is also used to initialize a corresponding amount of I/O storage resources, deploy a file system, and then install it into the root file system of the user virtual machine for use by the user.

The user virtual machine is also used to determine the amount of I/O storage resources to apply to the privileged virtual machine according to the consumption speed of its idle I/O storage resources.

The user virtual machine contains a storage resource usage monitoring service program;

The storage resource usage monitoring service program is used to detect the number of user's I/O idle storage resources, and send an application for I/O storage resources to the privileged virtual machine when it detects that the user's I/O idle storage resources are less than the critical value ask;

The storage resource usage monitoring service program is also used to initialize a corresponding amount of I/O storage resources, deploy the file system, and then install it into the root file system of the user virtual machine for use by the user.

The privileged virtual machine is also used to hot insert a corresponding amount of I/O storage resources into the user virtual machine, and notify the user virtual machine.

The privileged virtual machine contains a storage resource management service program;

The storage resource management service program is used to take out a corresponding amount of I/O storage resources requested by the user virtual machine from idle I/O storage resources and allocate them to the user virtual machine.

The storage resource management service program is also used to hot-swap the resource into the user virtual machine and notify the user virtual machine.

The present invention provides a system for reconfiguring I/O devices in a virtualized environment, the virtualized environment is a Xen virtualized environment, including a user virtual machine and a privileged virtual machine,

The user virtual machine is used to detect that the user's I/O idle storage resources are greater than a critical value, then the user virtual machine unloads a certain amount of I/O idle storage resources, and sends a request for unloading I/O storage resources to the privileged virtual machine, which contains the specific amount of I/O storage resources that need to be offloaded;

A privileged virtual machine is used to reclaim a specific amount of I/O idle storage resources.

The user virtual machine is further configured to modify the corresponding information of the root file system and the I/O device of the user virtual machine after unloading a certain amount of I/O idle storage resources.

The privileged virtual machine is also used to hot-plug a specific amount of I/O idle storage resources from the user virtual machine, and re-add them to the idle I/O storage resources.

The user virtual machine contains a storage resource usage monitoring service program;

The storage resource usage monitoring service program is used to detect the number of user's I/O idle storage resources, and unload a specific amount of I/O idle storage resources when it detects that the user's I/O idle storage resources are greater than a critical value And send an offload I/O storage resource request to the privileged virtual machine.

The storage resource usage monitoring service program is also used to modify the root file system of the user virtual machine and the corresponding information of the I/O device after unloading a certain amount of I/O idle storage resources.

The privileged virtual machine contains a storage resource management service program;

The storage resource management service program is used to reclaim a specific amount of I/O idle storage resources.

The storage resource management service program is also used to hot-plug a certain amount of idle I/O storage resources from the user virtual machine, and re-add them to the idle I/O storage resources.

The invention realizes that the allocation of storage resources changes with the needs of users under the condition of being transparent to users, which can meet the needs of users without causing waste of storage resources. At the same time, because it is transparent to the user, the user does not need to have professional computer knowledge; and the reconstruction process of the entire virtual I/O device is automatically completed, the response speed is fast, and the system administrator is not required, which reduces the workload of the system administrator and improves service. quality, reducing system service costs.

Description of drawings

Fig. 1 is the architecture of I/O virtualization in the existing Xen;

Fig. 2 is a schematic structural diagram of the virtual I/O device reconstruction system of the present invention;

Fig. 3 is an embodiment of the virtual I/O device reconfiguration method of the present invention.

Detailed ways

The present invention proposes a method for virtual I/O device reconstruction, including:

Step 1), user virtual machine (user virtual machine is exactly the virtual machine running on the VMM, such as VM1 is a user virtual machine, and the front-end device driver runs in the user virtual machine, and the user application program passes the front-end device driver to the device. Operation) in the storage resource usage monitoring service program detects that the user's idle storage resource is less than a certain critical value (such as 1G), then it will automatically send a resource request to the storage resource management service program in VM0;

Step 2), after the storage resource management service program in the VM0 receives the resource application sent by the user virtual machine, it takes out resources of the amount requested by the user virtual machine from idle storage resources, and then hot inserts them into the user virtual machine, And send a notification to notify the storage resource utilization status monitoring service program in the user virtual machine of the insertion of a new I/O storage resource;

Step 3), after receiving the notification, the storage resource usage monitoring service program in the user virtual machine initializes the newly inserted I/O storage resource, deploys the file system, and then installs it in the root file system of the user virtual machine for user use.

In the above step 1), the fixed value of the user's idle I/O storage resources can be modified according to the characteristics and requirements of the system, so as to achieve efficient use of I/O resources.

At the same time, the storage resource usage monitoring service program can determine the quantity of new storage resources to apply for according to the idle I/O storage resource consumption speed in the user virtual machine. If the consumption of idle I/O resources is very fast, such as when a user is downloading a large number of movies, then the I/O resources will be consumed very quickly. At this time, according to the consumption speed of I/O resources, the storage resource usage monitoring service program can It is concluded that the user is in the peak of sudden consumption of I/O storage resources, and it is very likely that a large amount of storage space will be needed in a short period of time. At this time, more storage resources will be allocated to the user at a time. , such as 5G.

And if the consumption of idle storage resources is relatively slow, such as when the user is writing a word document, and the idle storage resources are lower than the critical value after a certain save operation by the user, then the storage resource usage monitoring service program will monitor this. At the same time, it will find that the user’s consumption of storage resources is very slow, so the storage resource usage monitoring service program can draw a conclusion: the user is not in the peak period of storage resource consumption, and it is very likely that There is no need for a large amount of storage resources in a short period of time, and at this time, a small amount of storage resources, such as 1G, will be allocated to the user at a time. Through this mechanism, it can not only ensure that the needs of users are met, but also reduce the number of resource allocations and reduce the operating burden of the system.

Similar process, when there are too many free storage resources in the user virtual machine:

Step 1), the storage resource usage monitoring service program in the user's virtual machine detects that the user's idle storage resource is greater than a certain critical value, at this time it will automatically unload some storage resources, and then send a message to the storage resource management service program in VM0 Resource unloading application;

In step 2), the storage resource management service program in VMO reclaims the storage resource unloaded by the user virtual machine after receiving the resource application from the user virtual machine.

Through the automatic insertion and recycling of storage resources, it is possible to avoid a large amount of waste of storage resources on the premise of meeting user needs.

In a typical Xen virtualization environment, the storage resource management service program runs in the privileged virtual machine VM0, which is used to manage idle I/O storage resources, and receive and process resource application and unload requests sent by user virtual machines, as follows It is called server program for short. The storage resource usage monitoring service program running in the user virtual machine is used to monitor the usage of I/O storage resources in the user virtual machine, make a resource application or uninstall decision based on this, and send the application to the server program running in VM0 , hereinafter referred to as the monitor program.

The I/O device reconfiguration system provided by the present invention is as shown in Figure 2 in the virtualization environment, including privileged virtual machine VM0 and user virtual machine VM1, server (server) program in VM0 and moniter (monitoring program) in VM1 The communication between them can realize the application request and response of I/O resources, the unloading request and response of I/O resources, and the hot swap of I/O resources.

Figure 3 shows an example. Assuming that the user virtual machine VM1 is running at this time, its idle storage resource is 1.5G, and the threshold value of the idle resource set by the system is not less than 1G and not greater than 5G. The reconstruction process of the virtual I/O device is as follows:

In step 201, the user finds a good movie download site at a certain moment, in which multiple movies are what the user wants to download, and the total size is about 9G. Users then start downloading movies, and the free storage resource dwindles rapidly.

Step 202, when the free storage resources are less than 1G, the monitor program running in VM1 finds the lack of free resources, and because the free storage resources decrease rapidly in a short period of time, it is judged that there is a high possibility that the user will need a large amount of storage resources. Therefore, the monitor program sends an application for allocation of storage resources with a capacity of 10G to the server program running in VM0.

Step 203, after the server program running in VM0 receives the storage resource application from the monitor program running in VM1, it checks the idle storage resources and finds that the capacity of the idle resources is greater than 10G, which can meet the needs of the user virtual machine VM1.

In step 204, the server program takes resources with a capacity of 10G from idle storage resources and hot inserts them into the user virtual machine VM1. Then, send a response that the resources have been allocated to the monitor program running in VM1.

In step 205, the monitor program running in the user virtual machine VM1 checks the information of the newly inserted I/O resource after receiving the response that the resource has been allocated.

Step 206, subsequently, the monitor program initializes the newly inserted I/O storage resource, and deploys a file system on it.

Step 207, then, the monitor program installs the newly inserted I/O storage resource into the root file system of the user's virtual machine, and the user can use the new storage resource. At this time, the free storage resource becomes 10G plus the remaining storage space of the current user virtual machine. It should be noted that while the device is being reconfigured, the user virtual machine VM1 is still downloading the movie, and there is no need to suspend the user's operation. Assuming that the original free storage resources in the user virtual machine still have 800M when the reconstruction is completed, the total free storage resources in the user virtual machine now become 10.8G, which can fully meet the user's 9G movie download demand.

Step 208, after the user finishes downloading the movie with a size of 9G, the idle storage resource in the user virtual machine VM1 is 2.5G.

Step 209, after the user enjoys the downloaded movie, he deletes the downloaded movie, and at this time, the free storage resource in the user's virtual machine VM1 increases to 11.5G.

Step 210, the monitor program running in VM1 detects this change, and starts the resource unloading process.

Step 211, first, the monitor program unloads the newly inserted 10G storage resource from the root file system in the user virtual machine VM1. At this time, the free storage resource in VM1 becomes 1.5G.

Step 212, then, the monitor program strips the unloaded storage resource from the user virtual machine VM1, and modifies the corresponding information of the file system and I/O device of VM1 (the corresponding information here refers to: in the file system and in the device attribute the portion of the information that pertains to the storage resource being unmounted).

Step 213, finally, the monitor program sends a virtual I/O device resource unloading notification to the server program running in VMO.

Step 214, after the server program running in VM0 receives the virtual I/O resource offload notification and related information sent by the monitor program running in the user virtual machine VM1, it hot-plugs the corresponding virtual I/O storage resource from VM1, And add it back to the free storage resource.

During the whole process, the monitor program running in the user virtual machine makes resource application and unloading decisions according to the changes of idle I/O storage resources in the user virtual machine, and cooperates with the server program running in VM0 to pass the virtual I/O The hot swapping of O devices can dynamically change the capacity of virtual I/O devices, so as to meet the needs of users in real time, and at the same time enable efficient use of I/O storage resources without increasing the workload of system administrators. workload and system operating costs.

The present invention is transparent to the user, and the user does not need to participate in the process of resource application and allocation; the user will find that when the storage resources are insufficient, the system will automatically allocate more storage resources for him; For a long time, the system will automatically unload some storage resources; while users enjoy this service, they do not need advanced computer professional knowledge; automatically adjust storage resources according to the user's usage of storage resources, which can satisfy users. requirements, and avoid the occurrence of a large amount of waste of storage resources; the insertion and recovery process of the entire storage resource is automatically completed, responding quickly to changes in user needs, and providing users with high-quality services; it can be completed automatically, reducing system The workload of administrators reduces the service cost of the system.

Various modifications can be made to the above contents by those skilled in the art without departing from the spirit and scope of the present invention defined by the claims. Therefore, the scope of the present invention is not limited to the above description, but is determined by the scope of the claims.

Claims (26)

1. One kind when the idle storage resources of I/O during less than critical value in virtualized environment the method for I/O equipment reconstruction, described virtualized environment is the Xen virtualized environment, it is characterized in that, comprising:

   Step 1, user virtual machine detect user's the idle storage resources of I/O less than critical value, then send the request of application I/O storage resources to franchise virtual machine, wherein comprise the quantity of application I/O storage resources;

   Step 2, franchise virtual machine are taken out the corresponding number of I/O storage resources of user virtual machine application and are distributed to user virtual machine from the I/O storage resources of free time;

   Step 3, user virtual machine is carried out initialization to corresponding number of I/O storage resources, and the deployment file system is installed to then in the root file system of user virtual machine and uses for the user.
2. 2. as claimed in claim 1 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that in the step 1, user virtual machine is according to the spending rate decision of its idle I/O storage resources quantity to franchise virtual machine application I/O storage resources.
3. 3. as claimed in claim 1 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 1, storage resources behaviour in service Monitoring Service program is installed in user virtual machine, be used to detect the quantity of user's the idle storage resources of I/O, and send the request of application I/O storage resources to franchise virtual machine during less than critical value at the idle storage resources of the I/O that detects the user;

   In the step 3, storage resources behaviour in service Monitoring Service program also is used for corresponding number of I/O storage resources is carried out initialization, and the deployment file system is installed to then in the root file system of user virtual machine and uses for the user.
4. 4. as claimed in claim 1 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that in the step 2, franchise virtual machine inserts corresponding number of I/O storage resources heat in the user virtual machine, and the notice user virtual machine.
5. 5. as claimed in claim 1 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 2, the Storage Resource Management (SRM) service routine is installed in franchise virtual machine, and the corresponding number of I/O storage resources that is used for taking out from the I/O storage resources of free time the user virtual machine application is distributed to user virtual machine.
6. 6. as claimed in claim 5 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that in the step 2, the Storage Resource Management (SRM) service routine also is used for this resource hot plug to user virtual machine, and the notice user virtual machine.
7. One kind when the idle storage resources of I/O during greater than critical value in virtualized environment the method for I/O equipment reconstruction, described virtualized environment is the Xen virtualized environment, it is characterized in that, comprising:

   Step 1, user virtual machine detects user's the idle storage resources of I/O greater than critical value, then user virtual machine unloads the idle storage resources of I/O of specific quantity, and sends the request of unloading I/O storage resources to franchise virtual machine, wherein comprises the specific quantity of the I/O storage resources of needs unloading;

   Step 2, franchise virtual machine reclaims the idle storage resources of the I/O of specific quantity.
8. 8. as claimed in claim 7 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 1, user virtual machine is revised the root file system of user virtual machine and the corresponding information of I/O equipment behind the idle storage resources of the I/O of unloading specific quantity.
9. 9. as claimed in claim 7 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 2, the hot drawing from user virtual machine of franchise virtual machine goes out the idle storage resources of I/O of specific quantity, and it is added in the idle I/O storage resources again.
10. 10. as claimed in claim 7 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 1, storage resources behaviour in service Monitoring Service program is installed in user virtual machine, be used to detect the quantity of user's the idle storage resources of I/O, and at the idle storage resources of the I/O that detects the user during greater than critical value, the idle storage resources of the I/O of unloading specific quantity also sends the request of unloading I/O storage resources to franchise virtual machine.
11. 11. as claimed in claim 10 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 1, storage resources behaviour in service Monitoring Service program, also be used for behind the idle storage resources of the I/O of unloading specific quantity, revising the root file system of user virtual machine and the corresponding information of I/O equipment.
12. 12. as claimed in claim 7 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 2, the Storage Resource Management (SRM) service routine is installed in franchise virtual machine, be used for the idle storage resources of the I/O of specific quantity is reclaimed.
13. 13. as claimed in claim 12 in virtualized environment the method for I/O equipment reconstruction, it is characterized in that, in the step 2, the Storage Resource Management (SRM) service routine, also be used for going out the idle storage resources of I/O of specific quantity, and it is added in the idle I/O storage resources again from the user virtual machine hot drawing.
14. 14. one kind when the idle storage resources of I/O during less than critical value in virtualized environment the system of I/O equipment reconstruction, described virtualized environment is the Xen virtualized environment, comprises user virtual machine and franchise virtual machine, it is characterized in that,

    User virtual machine, the idle storage resources of I/O that is used to detect the user are sent the request of application I/O storage resources to franchise virtual machine during less than critical value, wherein comprise the quantity of application I/O storage resources;

    The privilege virtual machine, the corresponding number of I/O storage resources that is used for taking out from the I/O storage resources of free time the user virtual machine application is distributed to user virtual machine;

    User virtual machine also is used for corresponding number of I/O storage resources is carried out initialization, and the deployment file system is installed to then in the root file system of user virtual machine and uses for the user.
15. 15. as claimed in claim 14 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that user virtual machine also is used for according to the spending rate decision of its idle I/O storage resources quantity to franchise virtual machine application I/O storage resources.
16. 16. as claimed in claim 14 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, comprise storage resources behaviour in service Monitoring Service program in the user virtual machine;

    Storage resources behaviour in service Monitoring Service program is used to detect the quantity of user's the idle storage resources of I/O, and sends application I/O storage resources request to franchise virtual machine at the idle storage resources of the I/O that detects the user during less than critical value;

    Storage resources behaviour in service Monitoring Service program also is used for corresponding number of I/O storage resources is carried out initialization, and the deployment file system is installed to then in the root file system of user virtual machine and uses for the user.
17. 17. as claimed in claim 14 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that franchise virtual machine also is used for corresponding number of I/O storage resources heat is inserted user virtual machine, and the notice user virtual machine.
18. 18. as claimed in claim 14 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, comprise the Storage Resource Management (SRM) service routine in the franchise virtual machine;

    The Storage Resource Management (SRM) service routine, the corresponding number of I/O storage resources that is used for taking out from the I/O storage resources of free time the user virtual machine application is distributed to user virtual machine.
19. 19. as claimed in claim 18 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that the Storage Resource Management (SRM) service routine also is used for this resource hot plug to user virtual machine, and the notice user virtual machine.
20. 20. one kind when the idle storage resources of I/O during greater than critical value in virtualized environment the system of I/O equipment reconstruction, described virtualized environment is the Xen virtualized environment, comprises user virtual machine and franchise virtual machine, it is characterized in that,

    User virtual machine, the idle storage resources of I/O that is used to detect the user is during greater than critical value, then user virtual machine unloads the idle storage resources of I/O of specific quantity, and sends the request of unloading I/O storage resources to franchise virtual machine, wherein comprises the specific quantity of the I/O storage resources of needs unloading;

    The privilege virtual machine is used for the idle storage resources of the I/O of specific quantity is reclaimed.
21. 21. as claimed in claim 20 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, user virtual machine also is used for revising the root file system of user virtual machine and the corresponding information of I/O equipment behind the idle storage resources of the I/O of unloading specific quantity.
22. 22. as claimed in claim 20 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, the privilege virtual machine also is used for going out from the user virtual machine hot drawing the idle storage resources of I/O of specific quantity, and it is added in the idle I/O storage resources again.
23. 23. as claimed in claim 20 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, comprise storage resources behaviour in service Monitoring Service program in the user virtual machine;

    Storage resources behaviour in service Monitoring Service program, be used to detect the quantity of user's the idle storage resources of I/O, and at the idle storage resources of the I/O that detects the user during greater than critical value, the idle storage resources of the I/O of unloading specific quantity also sends the request of unloading I/O storage resources to franchise virtual machine.
24. 24. as claimed in claim 23 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, storage resources behaviour in service Monitoring Service program, also be used for behind the idle storage resources of the I/O of unloading specific quantity, revising the root file system of user virtual machine and the corresponding information of I/O equipment.
25. 25. as claimed in claim 20 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, comprise the Storage Resource Management (SRM) service routine in the franchise virtual machine;

    The Storage Resource Management (SRM) service routine is used for the idle storage resources of the I/O of specific quantity is reclaimed.
26. 26. as claimed in claim 25 in virtualized environment the system of I/O equipment reconstruction, it is characterized in that, the Storage Resource Management (SRM) service routine also is used for going out from the user virtual machine hot drawing the idle storage resources of I/O of specific quantity, and it is added in the idle I/O storage resources again.

Images