虚拟机操作脚本

• 手动添加磁盘以及磁盘配置

virsh attach-disk vm8 /vmdata22/vm8_2.qcow2 sde --wwn 0x50011731`openssl rand  -base64 0 | md5sum | cut -c1-8` --subdriver qcow2 --config --live

### 详情 ###
<< 'INFO'
  www: 磁盘wwn
  subdriver： 磁盘文件的格式
INFO

• 手动添加物理磁盘virt-manager

  #!/usr/bash
  
  set -x
  
  
  function add_remove_disk()
  {
      IFS=","
      vm_name=$1
      vm_disk=($2)
      IFS=" "
      if [ "$3" == "remove" ];then
          echo "Remove disk: ${vm_disk[*]}"
          for disk in ${vm_disk[*]};do
              virt-xml ${vm_name} --remove-device --update --disk ${disk};
          done
      else
          echo "Attach disk: ${vm_disk[*]}"
          for disk in ${vm_disk[*]};do
              virt-xml ${vm_name} --add-device --update --disk ${disk},cache=none,bus=scsi,device='lun';
          done
      fi
  }
  
  flag=${1}
  # sdi, sdh, sdg
  vm_name="vm5"
  vm_disk1="/dev/disk/by-id/wwn-0x50014ee0596e2504,/dev/disk/by-id/wwn-0x50014ee00419471e,/dev/disk/by-id/wwn-0x5001173101672bd0"
  
  add_remove_disk ${vm_name} ${vm_disk1} ${flag}
  
  ## sdd sde sdf
  vm_name="vm6"
  vm_disk1="/dev/disk/by-id/wwn-0x50014ee6b0d37088,/dev/disk/by-id/wwn-0x50014ee0aec3dc0b" #,/dev/disk/by-id/wwn-0x50014ee0596e6130"
  
  add_remove_disk ${vm_name} ${vm_disk1} ${flag}
  
  # sdf
  vm_name="vm7"
  vm_disk1="/dev/disk/by-id/wwn-0x50014ee0596e6130"
  
  add_remove_disk ${vm_name} ${vm_disk1} ${flag}
  

• 虚拟机模拟物理磁盘

  # config 配置下次重启生效； live实时生效，重启失效
  virsh attach-disk vm8 /vmdata22/vm8_2.qcow2 sde --wwn 0x50011731`openssl rand  -base64 8 | md5sum | cut -c1-8` --subdriver qcow2 --config --live

• 模拟ssd，nvme磁盘

  # nvme 需要 version > 4.2.0; ssd配置scsi设置
  <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>  
    <qemu:commandline>
      <qemu:arg value='-set'/>
      <qemu:arg value='device.scsi0-0-0-0.rotation_rate=1'/>
      <qemu:arg value='-drive'/>
      <qemu:arg value='file=/vmdata22/centos8_4_ssd_t.qcow2,format=qcow2,if=none,id=NVME1'/>
      <qemu:arg value='-device'/>
      <qemu:arg value='nvme,drive=NVME1,serial=nvme-1'/>
    </qemu:commandline>
    
  # Command
  virt-xml centos8.4 --edit --confirm --qemu-commandline='-set device.scsi0-0-0-0.rotation_rate=1'
  
  virt-xml centos8.4 --edit --confirm --qemu-commandline='-drive file=/vmdata22/centos8_4_ssd_t.qcow2,format=qcow2,if=none,id=NVME1'
  
  virt-xml centos8.4 --edit --confirm --qemu-commandline='-device nvme,drive=NVME1,serial=nvme-1'
  

• 故障解决

  【问题现象】
  Starting install… ERROR ‘virConnect’ object has no attribute ‘baselineHypervisorCPU’ Domain installation does not appear to have been successful. If it was, you can restart your domain by running: virsh --connect qemu:///system start kvm-test otherwise, please restart your installation.
  【解决办法】
  升级 libvirt-python-3.2.0-3 版本至 libvirt-python-4.5.0-1