KR101495069B1 - Method for virtual desktop service based on iov nic and apparatus thereof - Google Patents

Abstract

An input / output virtualization network interface card-based virtual desktop service method is disclosed. A method of operating a virtual desktop service based on an input / output virtualization network interface card according to the present invention includes: operating one or more virtual desktops; determining whether an SR-IOV network card is present and whether a VF network card is assignable; A step of allocating computing resources and a VF network card emulated by a hypervisor or a VMM to a virtual desktop, monitoring network usage by a virtual desktop by a VD network card manager, Determining whether a network usage of the virtual desktop is smaller than a predetermined threshold, releasing a VF network card allocated to a virtual desktop having a smaller network usage than the threshold, Determining whether there is a virtual desktop, allocating a VF network card to a virtual desktop that is not allocated with the VF network card, allocating a VF network card to the virtual desktop when the virtual desktop is not allocated .

Description

TECHNICAL FIELD [0001] The present invention relates to a virtual desktop service method and apparatus based on input / output virtualization network interface cards,

The present invention relates to an input / output virtual network interface card-based virtual desktop service method and apparatus, and more particularly, to a virtual desktop service method and apparatus using a virtual desktop interface Based virtual desktop services that enable server virtualization-based desktop usage.

Server virtualization technology that abstracts the computing resources (CPU, Memory, I / O devices) of physical desktop computers and server systems to dynamically configure and allocate the resources required by the parent software is called a hypervisor or virtual machine monitor ) Is installed on the host OS, and a virtual machine is created based on the installed OS.

The virtual desktop is created based on the created virtual machine, and the user accesses the virtual desktop created through the network and receives the virtual desktop service.

To provide virtual desktop services to remote users, a network-based Virtual Desktop Infrastructure (VDI) protocol is required to transfer virtual desktops.

There are Remote Desktop Protocol (RDP) protocols, Microsoft's Windows-based Terminal Services (TS) protocol, and High-Definition User Experience (HDX) , Redhat's SPICE, and VirtualBox.

The virtual desktop service environment basically uses N virtual machines sharing one hardware device by using emulated hardware devices. That is, the I / Os that are to be accessed from the virtual machine to the hardware device are stored as virtual hardware resources modeled by software, and the driver module installed in the hypervisor or VMM (Virtual Machine Monitor) privileged domain (S / W modules) to process the corresponding I / Os.

The scheduling for processing these I / Os becomes the hypervisor, and if the I / O data of the virtual machines are concentrated, the I / O response speed of all the virtual machines may be degraded.

In order to solve this problem in network devices, SR-IOV-based network cards are applied, which is a technique in which multiple virtual desktops share the device by providing device virtualization within the physical device.

SR-IOV-based network cards ensure the performance of raw network devices without sacrificing performance due to virtualization. It also provides hardware virtual switch functionality by virtualization software, which reduces the CPU load on physical desktop PCs and servers that provide virtual desktops to improve overall system performance.

The VDI protocol for transmitting virtual desktops to remote users is based on TCP or UDP-based network protocols.

In this case, when a large number of virtual desktop services are provided to one desktop PC and server, a large amount of CPU load is required to process the VDI protocol based on the network protocol. Due to the theory, the performance of the virtual desktop service is degraded and the service latency is increased.

Korean Patent Laid-Open Publication No. 2008-0093978 discloses a technology for providing a virtual network based on a real-time emulated network device. However, the technology disclosed in Korean Patent Laid-open Publication No. 2008-0093978 has a problem in that, There is a limitation that can not be provided for a function or a solution for reducing the load on the VDI protocol processing.

SUMMARY OF THE INVENTION The object of the present invention is to process network protocol processing in hardware among virtual desktop protocol processing tasks that are processed in software in a server virtualization environment by applying a network protocol offloading technology that processes network protocols by hardware.

In addition, a number of virtual desktop services are provided by providing physical desktop PCs and servers based on the SR-IOV network card for a large number of virtual desktop services. In order to provide a plurality of virtual desktop services, And to provide a network offloading function for VDI protocol processing which is a virtual desktop transmission protocol.

In addition, it aims to provide dynamic virtual network card allocation function based on network usage monitoring to overcome resource limitation of SR-IOV network card.

According to another aspect of the present invention, there is provided an input / output virtualization network interface card-based virtual desktop service method comprising: operating one or more virtual desktops; determining whether an SR-IOV network card exists, The method comprising the steps of: allocating computing resources and the VF network card emulated by the hypervisor or the VMM to the one or more virtual desktops; monitoring network usage by virtual desktops by the VD network card manager; Determining whether a network usage of the at least one virtual desktop is less than a predetermined threshold, releasing a VF network card allocated to a virtual desktop having a smaller network usage than the threshold, Determining whether an unallocated virtual desktop exists or not, releasing a virtual network card if there is a virtual desktop that is not allocated to the VF network card, and allocating the VF network card to the virtual desktop, .
In this case, the input / output virtualization network interface card-based virtual desktop service method may include a case in which one of the single root I / O virtualization (SR-IOV) network card and the assignable virtual function network card does not exist And allocating computing resources and the virtual network card emulated by the hypervisor or the virtual machine monitor to the one or more virtual desktops.
At this time, the input / output virtual network interface card based virtual desktop service method may further include allocating a virtual network card to a virtual desktop having a smaller network usage than the threshold.
At this time, the single root input / output virtualization network card includes a physical function unit and a virtual function unit, and the virtual function unit can operate based on the physical function unit.
At this time, the virtual desktop network card manager manages the virtual functions allocated to the virtual desktop running in the virtual machine, and monitors the network usage of the virtual desktop to deallocate the virtual functions allocated to the virtual desktop having a small network usage It can be dynamically assigned to an unallocated virtual desktop.
The input / output virtual network interface card-based virtual desktop service apparatus according to the present invention drives a virtual desktop, and determines whether a single root I / O virtualization (SR-IOV) A virtual function network card assigning unit for assigning a virtual function network card to the virtual desktop in accordance with existence of a virtual function network card; And a virtual function network card collecting unit for collecting the virtual function network card of the virtual desktop in accordance with a network usage amount of the virtual desktop allocated to the virtual function network card.
At this time, the virtual function network card assigning unit may allocate the virtual function network card that has been retrieved to the virtual desktop that is not allocated the virtual function network card.
At this time, the virtual function network card allocator allocates the virtual function network card to the virtual desktop when a single root input / output virtualization network card and an allocatable virtual function network card exist, The virtual network card can be allocated to the virtual desktop when either the card or the allocatable virtual function network card is not present.
At this time, the single root input / output virtualization network card includes a physical function unit and a virtual function unit, and the virtual function unit can operate based on the physical function unit.
At this time, the virtual desktop network card manager manages the virtual functions allocated to the virtual desktop running in the virtual machine, and monitors the network usage of the virtual desktop to deallocate the virtual functions allocated to the virtual desktop having a small network usage It can be dynamically assigned to an unallocated virtual desktop.

According to an embodiment of the present invention, by providing a physical desktop PC and a server based on an SR-IOV network card for a plurality of virtual desktop services, in providing a plurality of virtual desktop services, network device software emulation and software virtual switch It is possible to reduce the load of the CPU for providing the functions and to provide the network offloading function for the VDI protocol processing as the virtual desktop transmission protocol.

In addition, it can overcome the resource limitation of SR-IOV network card by providing dynamic virtual network card allocation function based on network usage monitoring.

It also improves the performance of virtual desktop servers by minimizing the load on hardware desktop PCs and server hardware and dynamically allocating SR-IOV network card resources to virtual desktops based on monitoring of network usage, Can be guaranteed.

1 is a block diagram of a virtual desktop service network based on an input / output virtual network interface card according to an embodiment of the present invention.
2 is a diagram illustrating a structure of an input / output virtualization network interface card-based virtual desktop server according to an embodiment of the present invention.
3 is a diagram illustrating a process of a virtual desktop service method based on an input / output virtualization network interface card according to an embodiment of the present invention.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a virtual desktop service network based on an input / output virtual network interface card according to an embodiment of the present invention.

1, the input / output virtual network interface card-based virtual desktop service network includes a virtual desktop client 100, a virtual desktop server 110, an internet network 120, and a virtual desktop manager 130. [ .

The virtual desktop client 100 is connected to the virtual desktop server 110 via a Virtual Desktop Infrastructure (VDI) protocol and is provided with a virtual desktop service.

The virtual desktop server 110 may be equipped with a Single Root I / O Virtualization (SR-IOV) network card 111, an SR-IOV NIC and an onboard network card 112 (NIC).

The virtual desktop server 110 may provide a virtual desktop service to the virtual desktop client 100, and may be configured as a physical desktop PC or a server.

The virtual desktop server 110 may be provided with a host operating system-based hypervisor or a VMM.

The SR-IOV network card 111 may provide a hardware emulation-based network device to the virtual desktop server 110 and provide a network protocol offloading function for VDI protocol processing.

The onboard network card 112 may provide a network interface with the virtual desktop manager 130.

For the virtual desktop service, the network load can be distributed by separating the network interface and the network interface for management.

The virtual desktop manager 130 can monitor and control the performance of the physical desktop PC and server and the performance of the virtual desktop.

2 is a diagram illustrating a structure of an input / output virtualization network interface card-based virtual desktop server according to an embodiment of the present invention.

2, an input / output virtual network interface card-based desktop server according to an embodiment of the present invention includes an SR-IOV network card (SR-IOV NIC) 501 and an onboard network card (NIC) A hypervisor 410 based on a host OS 400 or a virtual machine monitor 410 is installed.

The SR-IOV network card 500 provides a physical function (PF) 511 and 512 and a virtual function (VF) 521 and 522 and 523. The virtual function (VF) (PF). ≪ / RTI >

The physical function unit PF includes a first physical function unit PF1 and a second functional function unit 511 that provide a network interface capable of network protocol processing and a virtual function unit VF that does not support network protocol processing but is directly allocated to the virtual desktop And a second physical function unit (PF2, 512) that provides a network processing function and provides a hardware emulation-based network interface to a virtual desktop that is not allocated a virtual function unit (VF) with resource limitation.

The PF device driver PF DD 414 is installed in the hypervisor or the VMM 410 and the VF device driver VF DD is installed in the virtual machine based virtual desktops 302 and 303 to which the corresponding device is allocated.

The device driver PF DD and the PF device driver 414 of the physical function unit PF are installed in a hypervisor 410 or a virtual machine monitor 410 installed in a host operating system 400, Receives a protocol processing command for transmitting a screen to a remote user for the desktop and transmits the command to the first physical function units PF1 and 511. The virtual function unit VFIC ) To the second physical function unit (PF2, 512).

The VF device driver (VF DD) of the virtual function unit (VF) based on the core of the second physical function unit (PF2, 512) is installed in the virtual machine to receive and process the network command of the virtual machine.

At this time, the first physical function units (PF1, 511) of the SR-IOV network card 500 provide the same protocol offloading function as the TOE.

At this time, the second physical function unit (PF2, 512) supporting the network protocol hardware processing is a simple network card core, and is a dedicated interface for processing the VDI protocol for virtual desktop transmission to the remote user.

A virtual switch (SW) 412 may serve as a software-based virtual layer 2 network switch that provides a function for connecting a virtual machine to a physical network.

In a virtualized environment, network hardware is virtualized by a hypervisor or VMM, and virtualized network hardware is allocated and used by virtual machines.

At this point, the hypervisor should provide switching functionality for the network that will be used in the virtual machine.

That is, there is one network line connected to the virtualization server, but a plurality of virtual machines communicate with each other through this line. To this end, a virtual switch (SW) 412 confirms which virtual machine is the received network packet and transmits the same to the virtual machine.

At this time, the virtual switch (SW) 412 can be driven by software.

Direct assignment of virtual machines to the Virtual Function (VF) of SR-IOV is supported by Intel's VT-d and AMD's IOMMU technology.

The VD Network Card Manager (VDNIC Manager, 413) manages the VFs assigned to the virtual desktops running in the virtual machine, monitors the network usage of the virtual desktops, and deallocates and allocates the VFs allocated to the virtual desktops with low network usage It provides the ability to dynamically assign to an unfamiliar virtual desktop.

To this end, the VD network card manager 413 has a virtual machine allocation information table of the virtual function unit VF and communicates with the hardware module of the device manager 500 of the SR-IOV network card 500, (VF). When the allocation and release command for the virtual machine of the virtual function unit (VF) is executed, the allocation information table managed by the VD network card manager 413 is updated.

At this time, the VD network card manager 413 manages the virtual function (VF) assigned to the virtual desktop driven by the virtual machine, monitors the network usage of the virtual desktop, It provides the ability to deallocate a functional part (VF) and dynamically allocate it to an unallocated virtual desktop. In addition, the VD network card manager 413 is responsible for the configuration and control of the first physical function units PF1, 511 dedicated to VDI protocol processing.

The management agent 700 is an application program for communicating with a management system for managing virtual desktops. It does not use the SR-IOV network card 500 and performs network communication through an on-board network card mounted on the server board. .

That is, by duplicating the service network and the management network for the virtual desktop, the effect that the network load due to the information transfer for the virtual desktop management does not affect the service network is obtained.

At this time, the device driver for the corresponding onboard network card is installed in the host operating system, and there is no interface with the hypervisor 410 or the VMM (Virtual Machine Monitor) 410.

3 is a diagram illustrating a process of a virtual desktop service method based on an input / output virtualization network interface card according to an embodiment of the present invention.

Referring to FIG. 3, an input / output virtual network interface card-based virtual desktop service method according to an embodiment of the present invention starts with a virtual desktop providing system (S100) and each virtual desktop is operated by virtual software (S110 ).

At this time, it is determined whether or not the SR-IOV network card exists (S120) and whether or not there is an assignable VF network card (S130).

When there is an SR-IOV network card and an assignable VF network card, each virtual desktop is assigned a computing resource (CPU, HDD, MEMORY) and a VF network card emulated by the hypervisor or VMM (S140 ).

In the absence of an SR-IOV network card and an assignable VF network card, each virtual desktop is assigned a virtual network card and computing resources (CPU, HDD, MEMORY) emulated by the hypervisor or VMM ( S150).

Thereafter, virtual desktop access and service utilization is performed by the remote user on the basis of the allocated computing resources and the VF network card or the virtual network card.

Thereafter, the VD network card manager monitors the network usage amount for each virtual desktop (S170).

In step S180, it is determined whether the virtual desktop allocated the VF network card is smaller than the predetermined threshold value. If the virtual desktop is smaller than the threshold value, the VF network card allocated to the virtual desktop is released S190) and allocates a virtual network card (S200).

After that, it is determined whether there is a virtual desktop which is not allocated a VF network card due to a resource limitation (S210). If the virtual desktop exists, the virtual network card is deallocated (S22) The VF network card retrieved to the desktop is allocated (S230).

While the present invention has been described in detail with reference to the preferred embodiments thereof, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It will be understood. For example, in the form of a recording medium on which a program for realizing the input / output virtualization network interface card-based virtual desktop service method of the present invention is recorded. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

100: Virtual Desktop Client
110: Virtual Desktop Server
111: SR-IOV network card
112: Network card
120: Internet network
130: Virtual Desktop Manager

Claims (10)

Running at least one virtual desktop (VD);
A single Root I / O virtualization (SR-IOV) network card and a virtual function (VF) that can be assigned;
Allocating computing resources and the virtual function network card emulated by a hypervisor or a virtual machine monitor (VMM) to the one or more virtual desktops;
Monitoring network usage by virtual desktop network card manager by virtual desktop;
Determining whether a network usage of the one or more virtual desktops allocated to the virtual function network card is smaller than a preset threshold value;
Releasing a virtual function network card allocated to a virtual desktop having a smaller network usage than the threshold;
Determining whether there is a virtual desktop that is not allocated with the virtual function network card, and releasing the virtual network card if the virtual desktop is not allocated; And
And allocating the virtual function network card that has been retrieved to the virtual desktop that is not allocated the virtual function network card. The method according to claim 1,
The input / output virtual network interface card-based virtual desktop service method
If one or more of the single root I / O virtualization (SR-IOV) network cards and the allocatable virtual function network cards is not present, the one or more virtual desktops may be accessed by a hypervisor or virtual machine monitor Further comprising the step of: assigning the virtual network card to the computing resources to be emulated. 3. The method of claim 2,
The input / output virtual network interface card-based virtual desktop service method
And allocating a virtual network card to a virtual desktop having a smaller network usage than the threshold. The method of claim 3,
The single root input / output virtualization network card
A physical function unit and a virtual function unit,
The virtual function unit
And a virtual desktop service method based on an input / output virtualization network interface card operating on the physical function unit. The method of claim 3,
The virtual desktop network card manager
Managing virtual functions assigned to virtual desktops running in a virtual machine, monitoring the network usage of the virtual desktops, dynamically allocating virtual functions assigned to virtual desktops with low network usage, and dynamically allocating virtual functions to unassigned virtual desktops I / O virtualization network interface card based virtual desktop service method. The virtual desktop may be run and the virtual desktop may be provided with a virtual function that is different depending on the presence of a single root I / O virtualization (SR-IOV) network card and the availability of an allocatable virtual function network card Virtual Function, VF) virtual function network card allocation unit for allocating either a network card or a virtual network card; And
A virtual function network card withdrawing unit for withdrawing a virtual function network card of the virtual desktop in accordance with a network usage amount of the virtual desktop allocated to the virtual function network card,
And a virtual desktop service device based on the I / O virtual network interface card. The method according to claim 6,
The virtual function network card assigning unit
And allocating the virtual function network card retrieved to the virtual desktop not allocated with the virtual function network card. 8. The method of claim 7,
The virtual function network card assigning unit
Allocating the virtual function network card to the virtual desktop when a single root input / output virtualization network card and an allocatable virtual function network card exist,
Wherein the virtual network card is allocated to the virtual desktop when either the single root input / output virtual network card and the allocatable virtual function network card are not present. 9. The method of claim 8,
The single root input / output virtualization network card
A physical function unit and a virtual function unit,
The virtual function unit
An input / output virtualization network interface card-based virtual desktop service device operating based on the physical function unit. 9. The method of claim 8,
The virtual function network card collecting unit
Monitors the network usage of the virtual desktop to deallocate a virtual function network card allocated to a virtual desktop having a small network usage amount,
The virtual function network card assigning unit
An I / O virtual network interface card-based virtual desktop service device that dynamically allocates the virtual feature network card to a virtual desktop that has not been assigned a virtual feature network card.

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