不重启新增磁盘

  1. qemu-img create -f qcow2   /var/lib/libvirt/images/add-vdb-001.img 100G
  2. qemu-img info  /var/lib/libvirt/images/add-vdb-001.img
  6. virsh list --all # 查看虚拟机
  7. virsh list --all | awk '{print $2}' |xargs -i  virsh dumpxml  {}|egrep  'mac address|<name>' |grep -B 1 52:54:00:34:2f:b1
  10. virsh attach-disk  centos7.0-112-frontend  /var/lib/libvirt/images/add-vdb-001.img vdb --subdriver=qcow2 # 附加磁盘
  11. virsh detach-disk centos7.0-112-frontend  --target vdb  # 卸载磁盘
  14. qemu-img   resize /var/lib/libvirt/images/add-dev-30g.img +20G # 调整挂载盘大小
  15. virsh attach-disk  centos7.0-112-frontend   /var/lib/libvirt/images/add-dev-30g.img  vdc # 继续附加磁盘
  16. virsh domblklist  centos7.0-112-frontend  # 查看磁盘设备列表
  1. virsh edit centos7.0-112-frontend  # 编辑vm配置文件添加磁盘，重启仍然生效
  1.   <disk type='file' device='disk'>
  2.       <driver name='qemu' type='qcow2' cache='none'/>
  3.       <source file='/var/lib/libvirt/images/add-vdb-001.img'/>
  4.       <target dev='vdb' bus='virtio'/>
  5.     </disk>