openEuler 20.03

Installing the VM Software Packages

Download the dependencies.

yum install -y openssl-devel virt-install numactl numactl-devel libcap-ng-devel traceroute iperf3 python2-paramiko edk2 edk2-devel qemu-guest-agent

Create a storage pool.

systemctl start libvirtd
mkdir -p /home/kvm/images
chown root:root /home/kvm/images
chmod 755 /home/kvm/images
virsh pool-define-as StoragePool --type dir --target /home/kvm/images
virsh pool-build StoragePool
virsh pool-start StoragePool
virsh pool-autostart StoragePool
cd /home/kvm/images
qemu-img create -f qcow2 1.img 50G

(Optional) Modify the QEMU configuration file to configure the permission.

If the system does not display a permission error, skip this step.

Open the qemu.conf file.

           
                vim /etc/libvirt/qemu.conf

Press I to enter the insert mode, locate the content to be modified, and set user = "root" and group = "root", as shown in the following figure.
Press Esc to exit the insert mode. Input :wq! and press Enter to save the file and exit.

Restart the libvirtd service.

           
                systemctl restart libvirtd

Creating VMs Running CentOS 7.6

Create VM 1. Allocate four CPUs and 4 GB memory to it, and use 1.img as the drive space. Copy the .iso file to /home/iso/ and install CentOS 7.6.

virt-install --name=vm1 --vcpus=4 --ram=4096 --disk path=/home/kvm/images/1.img,format=qcow2,size=20,bus=virtio --cdrom /home/iso/CentOS-7-aarch64-Everything-1810.iso --network bridge=virbr0,model=virtio --force  --autostart

Install the VM OS.
Configure all items that contain an exclamation mark (!). Enter the serial number corresponding to the option, configure the parameter as prompted, and press b to start the installation.
After the installation is complete, the login prompt is displayed.
Repeat 1 to 4 to create VM 2.

Configuring the VMs

Modify the configuration of VM 1.

        
             virsh edit vm1

Delete <interface type='network'>xxx</interface>. Add the following content before </devices>:

         
              <hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x01' slot='0x01' function='0x2'/>
</source>
</hostdev>

The values of domain, bus, slot, and function in <address domain='0x0000' bus='0x01' slot='0x01' function='0x2'/> correspond to PCI port 0000:01:01.2 of the VF.

Modify the configuration of VM 2 in the same way.

When configuring the PCI port numbers for the other VMs, bind the PCI port numbers to VF ports that are not in use.

Parent topic: Creating a VM