# virsh blkdeviotune p861223 /dev/vm/p861223 --total-iops-sec 600 --live
# iotop
# virsh blkdeviotune p861223 /dev/vm/p861223 --total-iops-sec 0 --live
# virsh blkdeviotune p814090 sda --write_bytes_sec 30000000 --write_bytes_sec_max 30000000 --read_bytes_sec 30000000 --read_bytes_sec_max 30000000 --live --config
# virsh change-media p670196 sdc /kvm/templates/iso/virtio-win.iso --insert --config
# virsh change-media p670196 sdc --eject --config
# virsh nwfilter-undefine p651709
# virsh domiftune p870386 p870386 --live --config --inbound 0,0,0 --outbound 0,0,0
# virsh blkdeviotune p982015 /dev/vm/p982015 --live --config --read-bytes-sec 2000000 --write_bytes_sec 2000000 --write_bytes_sec_max 52428800
# virsh domiftune p631616 00:00:00:63:16:16 --live --config --inbound 12500,12500,1024
# virsh domiftune p631616 00:00:00:63:16:16