虚拟化技术展望（virtualization technology outlook）

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1、虚拟化技术展望（VirtualizationTechnologyOutlook）IntroductiontomodernvirtualizationtechnologyandproductsAccesstoproductsandtechnologiesBochsandQEMU:IsthePCsimulatorthatallowsuserspacesuchasWindowsorLinuxtorunontheLinuxoperatingsystem.VMware:Isapopularfullvirtualizationsolutionthatcanbevirtualizedwi

2、thoutmodifyingtheoperatingsystem.Z/VM:Isanewvirtualmachineoperatingsystembasedona64bitz/architecture.Z/VMprovidesfullvirtualizationandsupportsmostoperatingsystems,includingLinux.Xen:Isanopen,semivirtualizedsolutionthatneedstomodifytheclient'soperatingsystemandcanachieveperformanceclosetoth

3、atoftheoriginalsystembyworkingwithhypervisor.User-modeLinux:Isanotheropensourcesemivirtualizationsolution.Eachclientoperatingsystemisastandardprocessforthehostoperatingsystem.CoLinux,orcollaborationLinux:Isavirtualizationsolutionthatprovidestwooperatingsystemstosharetheunderlyinghardware.L

4、inux-Vserver:IsanoperatingsystemlevelvirtualsolutiononLinux,andeachclientserverissafelyisolated.OpenVZ:Isanoperatingsystemlevelvirtualizationsolutionthatsupportscheckpointinganddynamicmigration.LinuxKVM:IsthefirstvirtualizationtechnologytointegrateintotheLinuxmainlinekernel.InloadingaLinux

5、kernelloadablekernelmodules(KVM),thekernelitselfbecameaHypervisorprogram,ifthereisasuitablehardwaresupport(IntelVTorAMDSVMprocessor),thesystemcanrununmodifiedLinuxandwindowsclientoperatingsystem.Virtualizationtechnologyiswidelyused.Currentvirtualizationtechnologiesfocusprimarilyonservervir

6、tualization,oronindividualhostshostingmultipleseparateoperatingsystems.Thispaperfirstintroducestheprinciplesofvirtualizationtechnology,andthendiscussestheimplementationmethodsofmultiplevirtualizationtechnologies.Inaddition,someothervirtualizationtechnologiesareintroduced,suchasvirtualizati

7、onofoperatingsystemlevelonLinux.Tochangethingsfromoneformtoanother.Thevirtualizationofcomputersmakesasinglecomputerlooklikemanycomputersoracompletelydifferentcomputer.Virtualizationcanalsomakemultiplecomputerslooklikeacomputer.Thisiscalledserveraggregation(ser