CN101430649B - Virtual computation environmental system based on virtual machine - Google Patents

Virtual computation environmental system based on virtual machine Download PDF

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Publication number
CN101430649B
CN101430649B CN2008102266502A CN200810226650A CN101430649B CN 101430649 B CN101430649 B CN 101430649B CN 2008102266502 A CN2008102266502 A CN 2008102266502A CN 200810226650 A CN200810226650 A CN 200810226650A CN 101430649 B CN101430649 B CN 101430649B
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user
browser
network
virtual
workplace
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CN101430649A (en
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白跃彬
巨燕文
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Beihang University
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Beihang University
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Abstract

The invention provides a virtual computing environment system constructed based on a virtual machine. The system is used for providing a consistent and unified computing environment for a user on a computer connected to a network, which causes that the user can obtain the computing environment which is on the computer at any place and is identical with that of the personal computer in a familiar workplace. Based on the virtual machine technology, a tool named OS browser is designed as a unified virtual platform for operation of the user computing environment. The user assigns a system mapping from the network by the platform and creates a corresponding customer operating system as the operating system of the user computing environment. Additionally, virtual network facilities can cause the user to access network resources in the network of the familiar workplace in the computing environment.

Description

Virtual computation environmental system based on virtual machine
Technical field
The present invention relates to virtual machine and operating system field in the computer science, particularly relate to a kind of virtual computation environmental system that makes up based on virtual machine.
Background technology
Computing machine and network have become the important tool in the current daily life.No matter still stay at home in the workplace, personal computer is all being played the part of individual important assistant's role.In addition, in the workplace, often there are mainframe computer and mass storage devices to provide complicated large-scale calculations and stores service for the user.These computing equipments are connected usually in the private LAN of workplace above-mentioned service are provided, and the user in the workplace visits these computing equipments by the personal computer that is connected in this LAN (Local Area Network).Therefore, personal computer and the network calculations resource be familiar with have been arranged, the user can finish their work easily.But the user often needs to leave their workplace in the reality, continues their work in a new environment, as staying at home or the new workplace etc. of going on business.In this case, personal computer that the user is familiar with in the workplace and network calculations resource are all unavailable.Even the user can be with portable computer, but powerful computational resource can't obtain in other networks.Therefore, the present invention proposes a kind of virtual environment system, its target is to provide a unified computing environment to the user on any computing machine that is connected to network, software, user data and the Internet resources etc. that comprise customization, make and work on user's machine anywhere, the restriction that breaks through the region and move just as on the workplace and personal computer that they were familiar with.
Current, the research work of many this respects has been arranged, though solution is varied, generally speaking, can be divided into three major types: process level, operating system grade and thin-client pattern.
In the solution of process level, all users' process and file system are moved between different main frames.Relevant work has the Zap project of Columbia Univ USA (Columbia University).Zap provides a virtualization layer that is called pods on operating system, this is a process group that the integrated system view is provided in fact.The mechanism that Zap adopts a kind of being referred to as " checkpoint-restart " with pods as on a bulk migration to the new main frame.The advantage of this method is that system overhead is less, transmitted data amount is less.Yet, depend on the operating system of bottom in realization, and complicated.
Some other method, as the Collective project of Stanford Univ USA (Stanford University) and the ISR project of Carnegie-Mellon University (Carnegie Mellon University), they are based on the operating system grade solution of virtual machine.They do process and whole operation system example as a wholely to realize movability in different computing machine deploy.Correspondingly, compare with the solution of process level, this method wants the data quantity transmitted will be bigger.
In the thin-client pattern, as VNC, Windows remote desktop etc., all application and operating systems are moved on server.The counter that thin-client includes only input-output device, be used for graphic presentation and main memory, use network equipment of communicating by letter between certain agreement and server etc., it doesn't matter for the running status of operating system of user and client.More than in these methods, can only move an operating system of user example on the server.The Xendesktop of U.S. Citrix company moves a plurality of operating system of user examples by virtual machine on server, thereby makes a plurality of users visit the operation system example separately that operates on the same station server by thin-client respectively.This solution must depend on the network connection of maintenance connection always and the performance of network.
More than various implementation methods have their own characteristics each, quality is respectively arranged.The present invention has provided a kind of network data transmission amount that as far as possible reduces, and the virtual environment building method based on virtual machine of consistent computing environment is provided for the user.
Summary of the invention
The present invention is mainly based on virtual machine technique.The virtual machine that adopts is a software layer between computer hardware and client operating system software, and it can provide one on actual physical hardware virtualization hardware is abstract completely.This means that the client operating system that operates on this virtual platform do not know actual physical hardware, thereby from dependence, separate bottom real physical hardware.Therefore,, just can not need to make any modification on a computing machine, on it, dispose the user computing environment that comprises operating system as long as the virtual abstract platform of unification that provides by virtual machine is provided.In addition, virtual machine is stored in data in magnetic disk (software stack and file system) in an image file or the private partition usually, makes the data in magnetic disk of a virtual machine of transmission become convenient like this.Therefore, on the actual hardware platform that a virtual machine is supported, virtual machine can be used as the unified virtual hardware environment of disposing user computing environment.
The present invention with on the various computing machine be the user identical virtual computation environmental is provided is target, based on virtual machine, provide a kind of virtual environment system based on virtual machine.Specifically:
1. an OS browser is provided, start the computing machine (destination host) that the user will use in the new workplace with its guiding, obtain user's computing environment data (is the data mapping file of core with operating system) by this OS browser by network again, thereby the computing environment that the user is familiar with is presented to the user.The OS browser is the software stack (comprising operating system and other necessary application software) that operates on the destination host, and the LAN (Local Area Network) that this destination host and user are familiar with the workplace is connected on the same network.The core of OS browser is a virtual machine, and it provides a general virtual platform for the operation of personal virtual computing environment, obtains data and starts user's personal computing environment according to user's the input command system's back-level server from the user job place.The OS browser can be stored in the portable memory device, as portable hard drive or CD, with this portable storage device deactivation destination host.
2. a back-level server is provided in the user job place, this server provides a system image file of computing environment separately for each user, (as NFS) is published on the network by distributed file system, the user obtains his computational data image file by the OS browser from server, as the disk of virtual machine in the OS browser.In addition, back-level server also provides the network data forwarding capability, allows the user with the private network resource in the visit of the virtual computation environmental in the OS browser workplace.
3. provide virtual network function in the OS browser, make user computing environment in any destination host deploy identical network environment be arranged all later on, promptly the network configuration of computing environment needn't change on different destination hosts.Simultaneously, the IP tunnel function that computing environment provides by the OS browser, calling party is familiar with the Internet resources in the private network of workplace pellucidly.
Compared with prior art, innovation part of the present invention is: with the Xen virtual machine OS browser that has been core design, by transmitted data on network, provide virtual computation environmental for the user on destination host arbitrarily.Simultaneously, on any main frame, provide unified network environment for user's computing environment, make user's computing environment on new destination host, not need to change host number, and all private network resources can be accessed with virtual network mechanism.
Description of drawings
Fig. 1 mobile virtual computing environment architecture that individualizes
The design of Fig. 2 OS browser
Fig. 3 virtual network
The application scenarios of the individualized mobile virtual computing environment of Fig. 4
Embodiment
At first, the present invention is done a total introduction, comprise the interactive mode between each functional module, each module and the working mechanism of personal virtual computing environment.Secondly, respectively each major part is elaborated respectively.At last, by a concrete application scenarios the present invention's application in practice is described.
Fig. 1 has showed general view of the present invention, and system always has four ingredients: destination host, system's back-level server, private network resource and IP network.System's back-level server and private network resource have constituted user job place private LAN.Destination host can be any computing machine that is connected on the IP network.Destination host is connected by IP network with the private LAN in user job place.The present invention mainly concentrates on destination host and the system's back-level server.
System image is the memory map of a computing environment, is the data acquisition of one group of file in form, and its content is the file system of an operating system of user, comprises the file and the individual subscriber file of operating system and application software.Transmission for convenience and management, all system images are stored in respectively in the big file map on the disk, Here it is so-called system image file.The system image file is that user computing environment moves requisite ingredient.Among Fig. 1, supposing in each user job place private LAN has system's back-level server.Distributed file system server is wherein safeguarded a system image file (being the static example of computing environment) for each user, and such service is provided, and the user is obtained by network or upgrades their system image file separately.
See also Fig. 1, the OS browser is the key components on the destination host.The OS browser is the software stack (comprising operating system and other necessary application software) that starts of vectoring computer automatically, starts destination host with the guiding of OS browser, and the LAN (Local Area Network) that this destination host and user are familiar with the workplace is connected on the same network.The core of OS browser is a virtual machine, and it provides a general virtual platform for the operation of personal virtual computing environment.The OS browser can be stored in the portable memory apparatus, as portable hard drive or CD, with this portable storage device deactivation destination host, for the operation of personal virtual computing environment provides virtual platform.Therefore, the software stack that at this time operates on the destination host has not been the software that was deployed in originally on this computing machine, but saved software stack in the guiding target host-initiated portable set.The similar Web browser of OS browser, mutual with the distributed file system that is positioned on system's back-level server among Fig. 1, obtain or the update service device on image file in data, and finally present to his own familiar operating computing environment of user.The OS browser provides a user interface, and the user can utilize this interface to use the OS browser to select his system image from server, and starts the virtual computation environmental that new client operating system will be operated as him in the OS browser.
Except the software and professional software, individual subscriber file etc. of personal customization, the Internet resources in the private LAN of workplace also are the major parts of user's personal computing environment.On the essence, these resources are the mainframe computers that have powerful calculating ability or massive storage space, they on local private network for the user who authorizes provides calculation services, as be used for carrying out the big emulation of bulk density cluster, the data center of mass data storage service etc. is provided.Especially in scientific research institution, especially can use these computational resources.Because a variety of causes, the private network resource perhaps is transparent, inaccessible to external network.In order to reach the purpose of working as the work space of being familiar with anywhere, need be to the ability of system's increase from exterior clear accessing workplace private network resource.The present invention has adopted IP tunneling, makes between OS browser and the system's back-level server to cooperate under IP tunneling protocol.Therefore, the IP tunnel module in system's back-level server is played the part of the function of a router, and local private network resource can be used the validated user from external network.Therefore, in the individual subscriber virtual computation environmental, the private network resource in the workplace that the user can be familiar with them communicates by IP tunnel, just as use these Internet resources in the workplace of being familiar with.
Personal virtual computing environment working mechanism is as follows: the supposition of personal virtual computation environmental system has system's back-level server in the privately owned workplace LAN (Local Area Network) of each user, this server can be by visiting from outside.Start destination host by the portable memory apparatus guiding that has OS browser software stack, the OS browser just can be deployed on the destination host.Under the control of OS browser, the user obtains his pairing system image of computing environment by network from the distributed file system server of system's back-level server, and sets up the running example of a system image.This running example is exactly the thing that is referred to as personal virtual meter environment.Running example is a client operating system that operates on the virtual machine in fact, and this operating system is started by the corresponding system boot image on the server.Therefore, whenever any place---as long as a user can obtain a computing machine that is connected on the network, start this computing machine with the portable memory apparatus guiding that has the OS browser, select his system image in the OS browser that the user is in operation from server---will present one to this user and be familiar with the same computing environment in workplace with him.By this mechanism, will realize the personal computing environment that a unification, unanimity, support user move.
See also Fig. 2, the software stack of moving on computer hardware is made up of an Xen virtual machine monitor and two client operating systems (territory 0 and territory U) that operate in above it.The Xen virtual machine monitor layer provides a virtual abstract hardware environment for each client operating system.Why Xen is used as virtual machine platform, is because the overhead of Xen is lower, can be near non-virtualized performance.Virtual machine monitor layer and territory 0 have made up a virtual platform for the personal virtual computing environment jointly.The network design virtual network that will wait behind partly illustrates.
The Xen virtual environment required before other virtual machine creating, and a territory 0 must be moved.Territory 0 is the unique special virtual machine that operates on the Xen virtual machine monitor, and it has visit actual physics I/O equipment and other operates in the privilege of virtual machine on same the physical machine (territory U) simultaneously.In Fig. 2, territory U is one the client operating system of the virtual hardware that is provided by the Xen virtual machine monitor on abstract is provided.In the present invention, a territory U is only arranged, the system image of this territory by the user starts, and this territory is user's personal virtual computing environment just also.Subscriber Interface Module SIM among Fig. 2 in the territory 0 starts, closes, blocks territory U for the user provides an interface, can also carry out alternately with territory U by this user interface, obtains to import as the output of display field U, from the user etc.In practical operation, the IP address that the user can the input system back-level server, and select his system image to create a client operating system.The software stack that will comprise virtual machine monitor makes a guidable Live CD and starts a computing machine, can provide a simpler method at destination host deploy OS browser.
As shown in Figure 2, the disk of territory U is provided by the NFS client.The NFS client sends to request at the nfs server end that is positioned on system's back-level server after obtaining the magnetic disc i/o request from territory U.The nfs server end is followed according to request and is sent the data to the NFS client, and the NFS client sends the data to territory U again.NFS is the distributed file system on a kind of network, and territory U is by the file on the NFS client-access network, and these network storage equipments similarly are to be connected local disk to territory U.Therefore, the network distribution type file system is said so transparent to territory U, and what territory U did not know to operate is local file or long-range file, is responsible for locating file and is transmitted by the network distribution type file system.
The operating process of above-mentioned various piece is responsible for by controller module in the OS browser.As shown in Figure 2, two Microsoft Loopback Adapters are arranged in the host operating system, one is connected to territory U, and one is connected to territory 0, and they are connected to external network by NAT mode and IP tunnel at last.Virtual network of the present invention realizes by these two technology just.
See also Fig. 3, virtual network provides the network environment of a unanimity for virtual computation environmental in any place, and promptly in any place, the network configuration that user's personal computing environment is seen is consistent with Internet resources.For virtual computation environmental, its network number is that the user is familiar with workplace network of network number, and other Internet resources in this workplace and it are arranged in same network.On the destination host of strange workplace, the network number of user's virtual computation environmental still is that the user is familiar with the network number in the workplace.At this moment, the Internet resources in its consolidated network that can see are in fact corresponding to the network disk of being familiar with in the workplace.The realization of virtual network comprises two parts: (a) in autonomous territory of OS browser internal build and (b) make the privately owned computational resource in the network of workplace addressable to the personal computing environment in the OS browser.
For (a), in OS browser inside, be provided with a network, itself is an autonomous territory.When the operating personal virtual computer example environments of creating in the OS browser like this joins in this network, just can know the network settings of OS browser outside.As long as the configuration of the network settings of OS browser is correct, territory U just can pass through OS browser access external network.The virtual network function that the present invention uses Xen to provide has been set up a LAN (Local Area Network) that comprises territory 0 and territory U in OS browser inside.As shown in Figure 2, territory U is connected to network by Microsoft Loopback Adapter vif1.0, and territory 0 connects network by vif0.0.This LAN (Local Area Network) is connected to external network by the NAT mode.The function of router is served as in the territory 0 here, and the bag that receives is sent to suitable purpose network.Therefore, all there is no need to revise the network configuration of territory U in any new position.In a new network environment, as long as the configuration of the physical network device in the territory 0 is suitable, territory U just can be by same network configuration visit external network.
For (b), there are many IP tunneling protocols can be used for setting up IP tunnel.Among Fig. 1, the OS browser links to each other in logic with IP tunnel in the server, has set up a tunnel path between representative domain 0 and the server.By this tunnel path, make the private network resource that is arranged in the workplace can be by the OS browser access.By this mechanism, territory U can visit the OS browser and visit private network resource in the user job place.
At last, provide the course of work and the practical application that the application scenarios of people's virtual environment one by one further specifies the personal virtual environment.
See also as Fig. 4, the user uses his personal computer in the workplace that he is familiar with, this computing machine is presented to the user be comprise file system, software resource, system management facility and desktop environment etc. personal computing environment 1..Subscriber computer is connected in the private LAN of local workplace, the user in his personal computing environment by local network use local storage resources 2. with local computational resource 3..In addition, the user also can visit local area network network calculations resource and network storage resource in addition this moment.
Because the needs of real work, 4. the user need arrive a new workplace.In this new workplace, provide one to be familiar with the computing machine that the workplace LAN (Local Area Network) couples together by IP network with the user for the user.The user uses the Live CD that is deployed with the OS browser to start destination host, obtain the user's personal computing environment data by the OS browser from the system's back-level server that is arranged in the workplace private LAN, create an operating user's personal computing environment 5..What this computing environment and user obtained on his workplace computing machine is the same.The support of virtual network has been arranged, the local storage resources of the personal computing environment that on this destination host, provides in can the accesses virtual network 6. with local computational resource 7..Local storage resources in the virtual network and local computational resource are actually and are arranged in local storage resources and the local computational resource that the user is familiar with the workplace.Certainly, the computing environment on the fresh target main frame can certainly be visited other network calculations resource and the network storage resource in the IP network.

Claims (4)

1. virtual computation environmental system that makes up based on virtual machine, this system is familiar with computing environment on the computing machine of workplace with the user and is deployed on the destination host in the new workplace, it is characterized in that, this system comprises destination host, system's back-level server and private network resource, system's back-level server and private network resource constitute the user and are familiar with the workplace private LAN, destination host is familiar with the workplace private LAN with the user and is connected by external network, wherein:
Has the OS browser on the destination host, the OS browser is the software stack that starts of vectoring computer automatically, this software stack is stored on the portable memory apparatus, the core of OS browser is a virtual machine, the OS browser provides a general virtual platform for the operation of personal virtual computing environment, behind the portable memory apparatus guiding startup destination host that has OS browser software stack, the software stack that operates on the destination host has not been the software stack that was deployed in originally on this destination host, but the software stack in the OS browser; In the OS browser, create a LAN, this LAN is as an autonomous system, this autonomous system has identical network settings at destination host with the subscriber's main station that the user is familiar with the workplace, this autonomous system is connected with external network by NAT, pass through external network, the OS browser is mutual with the distributed file system that is arranged on system's back-level server that the user is familiar with the workplace private LAN, obtain or the update system back-level server on the system image file in data, and finally present to the operating computing environment that user oneself is familiar with; The OS browser provides a user interface, and the user utilizes this interface to select user's oneself system image from system's back-level server, and starts the virtual computation environmental that new client operating system will be operated as the user in the OS browser;
System's back-level server is arranged on the user and is familiar with in the private LAN of workplace, provide one can be by the interface of visiting from outside, and distributed file system and IP tunnel module are set on system's back-level server, export on the external network by the system image of distributed file system the user, make the user obtain data in the system image file by the OS browser, make OS browser access user be familiar with private network resource in the private LAN of workplace by the IP tunnel module, wherein system image is the memory map of a computing environment, it is the data acquisition of one group of file in form, its content is the file system of an operating system of user, comprises the file and the individual subscriber file of operating system and application software.
2. the system as claimed in claim 1, it is characterized in that: described portable memory apparatus is portable hard drive or CD.
3. the system as claimed in claim 1, it is characterized in that: described virtual machine is the Xen virtual machine.
4. the system as claimed in claim 1 is characterized in that, described external network is an IP network.
CN2008102266502A 2008-11-19 2008-11-19 Virtual computation environmental system based on virtual machine Expired - Fee Related CN101430649B (en)

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