virtio

raw to adjust the size and then go back to avoid this problem Virt-installWhen installing a virtual machine, it is commonSuch as:[Email protected] ~]# virt-install--name=vm2--ram,--vcpus=1--disk path=/image/vm2.img,size=7,bus=virtio--Accelerate--cdrom=/iso/rhel6.5/rhel-server-6.5-x86_64-dvd.iso--vnc--vncport=5910--vnclisten=0.0.0.0--network Bridge=br0,model=virtio--noautoconsoleviewing partition infor

machine's IO access is slow.Rustyrussell, an IBM scientist, has created Virtio technology with the help of Xen's research and development experience. is to write a set of PCI virtual devices and drivers in the virtual machine, the virtual PCI device has a piece of virtual device memory. This virtual device memory host is accessible and can be accessed by the virtual machine via the Virtio driver. That is,

#first,youshouldcreatevirtualldiskqemu-img create-fqcow2/kvm/centos.img30g#secondinstallsystemvirt-install-- Connect=qemu:///system--name=centos--ram=500--vcpus=2--cdrom=/media/iso/centos-6.5-x86 _64-bin-dvd1.iso--os-variant=rhel6--disk=/kvm/centos.img,format=qcow2,size=30--network Bridge=br0--hvm--vnc--vncport=5910--vnclisten=0.0.0.0#ifmemoryistoo low,wecouldn ' tinstallthesystem,remeberit; #sample #virt-install- -name=oeltest02--os-variant=rhel5.8--ram512--vcpus=1--diskpath=/data/ test02.img,f

-variant=rhel6--ram--vcpus=1--disk path=/data/vmdisk/vmtest.qcow2,format=qcow2,Size=6,bus=virtio--accelerate--cdrom=/iso/centos-6.5-x86_64-bin-dvd1.iso--vnc--vncport=5910--vnclisten=0.0.0.0 --network Bridge=br0,model=virtio--noautoconsole650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/72/4A/wKioL1XgCijz9e81AAGS8aW5SUc827.jpg "title=" cc.jpg "alt=" Wkiol1xgcijz9e81aags8aw5suc827.jpg "/>7. Addition

=linux--os-variant=rhel6--ram 1024x768--vcpus=2--disk path=/data/vms/images /test/test.img,format=qcow2,size=80,bus=virtio--accelerate--location http://172.18.0.1/ cobbler/ks_mirror/centos-6.7-x86_64/ --vnc--vnclisten=0.0.0.0--network bridge=br0,model=virtio-- Noautoconsole]# Virt-managerThe graphics window appears:650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/83/29/wKiom1dr9VzgdGGDAAC87Iith

toHost kernel. Vhostwith theKvmthe event communication throughEventfdmechanisms to achieve this, mainly including two directions.Event, one isGuestto theVhostdirection ofKick Event, throughIoeventfdthe other isVhostto theGuestdirection ofCall Event, throughIrqfdbearer. use of Guest_notifier: Vhost after processing the request (Received the packet), the buffer is placed on the used ring above, to call FD inside write; If you have successfully set up Irqfd kvm will be directly inte

Primary content:KVM Fundamentals (reprint)How to deploy a KVM hostQuickly create the first virtual machineNic Bridging, NAT configurationHow NAT develops an IP addressNat Initial Network firewall configuration, how to port mappingVirsh Command IntroductionSupport for Virsh consoleVirt-install and Qemu-img Command detailedHow to add a network card and diskIntermediate Stage:Understanding of XML File formatsDynamically adjust memory and CPUIntroduction to KVM CloningKVM Snapshot Introduction Learn

/bin/qemu-kvm Create a bridge: CAT/etc/sysconfig/network-scripts/ifcfg-br0 Device = br0type = bridgeonboot = yesbootproto = staticipaddr = Public IP netmask = Public IP mask gateway = Public IP Gateway Modify Nic information to connect Nic to bridge: CAT/etc/sysconfig/network-scripts/ifcfg-em1 DEVICE=em1BRIDGE=br0ONBOOT=yesBOOTPROTO=none Restart NIC: servicenetworkrestart View bridges: [[emailprotected]data1]#brctlshowbridgenamebridgeidSTPenabledinterfacesbr08000.d4ae526e935anoem1virbr08000.5254

Device Simulation Hypervisor provides a way to share CPU with multiple operating systems (CPU virtualization), but to provide complete virtualization, the entire environment must be virtualized for these VMS. Machine-or platform-simulation can be implemented in several ways. One popular open-source package supports many hypervisor, calledQemu. Qemu is a complete simulator and hypervisor. However, KVM only uses qemu for device simulation as a separate process in the user space. One interesting

: select the NIC type Step 11: Go to virtualization settings and select the first item Step 12: select the time zone, input method, and language support Step 13: select the software environment Step 14: Set the hard disk Step 15: Set the superuser password 1. Virtual Machine installation () [VM vm_create.sh] [Root @ foundation3 sbin] # vim/sbin/vm_create.sh // create a fully automated creation script #! /Bin/bash // not Annotation Virt-install \ // start the Virtual Machine Installer -- Lo

5G-n kvm-mig store on Ubuntu-src use virt-install to install the vm to the kvm-mig volume: www.2cto. com1virt-install-d-n kvm-mig-r 2048 -- disk path =/dev/store/kvm-mig, bus = virtio, cache = none -- network bridge = br0, model = virtio -- vnc -- cdrom =/opt/after the debian-6.0.2.1-amd64-CD-1.iso is installed, start the Virtual Machine and log on to view, such: get resources for shared storage 1 iscsiadm

vmdisk storage pool has been created. You can create a virtual disk file directly in this storage pool.5. Create a virtual machine storage volume in the storage pool (1) create a virtual machine storage volume in the storage pool # virsh vol-create-as vmdisk oeltest03.qcow2 20G --format qcow2 650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px; "title =" image "border =" 0 "alt =" image "src =" http://img1.51cto.com/attachment/201310/2/7035

-virtualizationprinciple: Para-virtualization, also known as para-virtualization, was first used by Citrix's Xen. In the semi-virtualized model, the unified physical hardware resources are managed by hypervisor, and the hypervisor provides the resource invocation interface. The virtual sub-machine communicates with the hypervisor through a specific calling interface, and then the full I/O resource controls the operation. The Para-virtualization model diagram is as follows:Para-virtualization, al

and/or incomplete code/drivers" = y (Config_experimental = y) "Processor type and features ": "Paravirtualized guest support" = y "Lguest guest support" = y "High memory support" = off/4 GB "Alignment value to which kernel shoshould be aligned" = 0x100000 (Config_paravirt = Y, config_lguest_guest = Y, config_highmem64g = N and Config_physical_align = 0x100000) "Device drivers ": "Staging drivers" = N "Block devices" "Virtio block Driver (experiment

1. Lab description Qcow2 disk format is recommended for KVM virtual machines in centos 7. In this tutorial, centos 6.8 64 virtual machines are installed in KVM.2. Command deployment process 2.1 upload an image Use winscp to upload to/data/ISO/2.2 format a disk 1 virt-install --network bridge=br0,model=virtio --name=vm01-centos6.8 --ram=1024 --vcpus=2 --disk path=/data/images/vm01-centos6.8.img,size=20,bus=virtio