2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest [req-7ff8afb6-57b3-46e1-a639-650ea82b5c8c f2404224ccbe40319077a735886824b6 9ed5b56c9a6a42c0a8362897a5561f61 - default default] Error launching a defined domain with XML: <domain type='kvm'>
  <name>instance-00000008</name>
  <uuid>31153057-c972-4f76-b5d0-2f6a2eb5d6ea</uuid>
  <metadata>
    <nova:instance xmlns:nova="http://openstack.org/xmlns/libvirt/nova/1.1">
      <nova:package version="25.0.0"/>
      <nova:name>server1</nova:name>
      <nova:creationTime>2022-07-27 09:10:26</nova:creationTime>
      <nova:flavor name="m1.nano">
        <nova:memory>128</nova:memory>
        <nova:disk>1</nova:disk>
        <nova:swap>0</nova:swap>
        <nova:ephemeral>0</nova:ephemeral>
        <nova:vcpus>1</nova:vcpus>
      </nova:flavor>
      <nova:owner>
        <nova:user uuid="f2404224ccbe40319077a735886824b6">admin</nova:user>
        <nova:project uuid="9ed5b56c9a6a42c0a8362897a5561f61">admin</nova:project>
      </nova:owner>
      <nova:ports>
        <nova:port uuid="e3665c1d-fa46-48d1-8d2a-917e4bc144cb">
          <nova:ip type="fixed" address="10.0.0.84" ipVersion="4"/>
        </nova:port>
      </nova:ports>
    </nova:instance>
  </metadata>
  <memory unit='KiB'>131072</memory>
  <currentMemory unit='KiB'>131072</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <cputune>
    <shares>1024</shares>
  </cputune>
  <sysinfo type='smbios'>
    <system>
      <entry name='manufacturer'>OpenStack Foundation</entry>
      <entry name='product'>OpenStack Nova</entry>
      <entry name='version'>25.0.0</entry>
      <entry name='serial'>31153057-c972-4f76-b5d0-2f6a2eb5d6ea</entry>
      <entry name='uuid'>31153057-c972-4f76-b5d0-2f6a2eb5d6ea</entry>
      <entry name='family'>Virtual Machine</entry>
    </system>
  </sysinfo>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.6.0'>hvm</type>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <vmcoreinfo state='on'/>
  </features>
  <cpu mode='host-model' check='partial'>
    <topology sockets='1' dies='1' cores='1' threads='1'/>
  </cpu>
  <clock offset='utc'>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source dev='/dev/dm-6'/>
      <target dev='vda' bus='virtio'/>
      <iotune>
        <total_iops_sec_max>200</total_iops_sec_max>
      </iotune>
      <serial>7bc0c2eb-cacc-4c9e-9320-99cbad8e8518</serial>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </disk>
    <controller type='usb' index='0' model='piix3-uhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <interface type='bridge'>
      <mac address='fa:16:3e:86:42:6b'/>
      <source bridge='qbre3665c1d-fa'/>
      <target dev='tape3665c1d-fa'/>
      <model type='virtio'/>
      <mtu size='1450'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <log file='/var/lib/nova/instances/31153057-c972-4f76-b5d0-2f6a2eb5d6ea/console.log' append='off'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
    </serial>
    <console type='pty'>
      <log file='/var/lib/nova/instances/31153057-c972-4f76-b5d0-2f6a2eb5d6ea/console.log' append='off'/>
      <target type='serial' port='0'/>
    </console>
    <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='192.168.122.14'>
      <listen type='address' address='192.168.122.14'/>
    </graphics>
    <audio id='1' type='none'/>
    <video>
      <model type='virtio' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <stats period='10'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </memballoon>
    <rng model='virtio'>
      <backend model='random'>/dev/urandom</backend>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </rng>
  </devices>
</domain>
: libvirt.libvirtError: internal error: unable to execute QEMU command 'block_set_io_throttle': bps_max/iops_max require corresponding bps/iops values
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest Traceback (most recent call last):
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest   File "/var/lib/kolla/venv/lib/python3.6/site-packages/nova/virt/libvirt/guest.py", line 165, in launch
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest     return self._domain.createWithFlags(flags)
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest   File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 193, in doit
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest     result = proxy_call(self._autowrap, f, *args, **kwargs)
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest   File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 151, in proxy_call
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest     rv = execute(f, *args, **kwargs)
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest   File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 132, in execute
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest     six.reraise(c, e, tb)
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest   File "/usr/local/lib/python3.6/site-packages/six.py", line 719, in reraise
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest     raise value
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest   File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 86, in tworker
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest     rv = meth(*args, **kwargs)
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest   File "/usr/lib64/python3.6/site-packages/libvirt.py", line 1385, in createWithFlags
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest     raise libvirtError('virDomainCreateWithFlags() failed')
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest libvirt.libvirtError: internal error: unable to execute QEMU command 'block_set_io_throttle': bps_max/iops_max require corresponding bps/iops values
2022-07-27 12:10:30.429 8 ERROR nova.virt.libvirt.guest 
2022-07-27 12:10:30.434 8 ERROR nova.virt.libvirt.driver [req-7ff8afb6-57b3-46e1-a639-650ea82b5c8c f2404224ccbe40319077a735886824b6 9ed5b56c9a6a42c0a8362897a5561f61 - default default] [instance: 31153057-c972-4f76-b5d0-2f6a2eb5d6ea] Failed to start libvirt guest: libvirt.libvirtError: internal error: unable to execute QEMU command 'block_set_io_throttle': bps_max/iops_max require corresponding bps/iops values
2