When adding volume, option "bus" does not work

I need to add to the virtual machine cinder volume. When adding bus, it must be an type ide. Through this CLI it works

'--block-device id = 54b70708-22b7-4744-aaf9-9ef3364def92, bus = ide"

Options do not work through the horizon, always say ' bus = 'virtio' />

<Disk type = 'block' device = 'disk'>
       <Driver name = 'qemu' type = 'raw' cache = 'none' io = 'native' />
       <Source dev = '/ dev / disk / by-path / ip-10.105.170.10: 3260-iscsi-iqn.2010-10.org.openstack: volume-866dd7fd-7e3d-46d1-98ca-cfb39a5e7ec0-lun-1' />
       <BackingStore />
       <Target dev = 'vda' bus = 'virtio' />
       <Serial> 866dd7fd-7e3d-46d1-98ca-cfb39a5e7ec0 </ serial>
       <Alias name = 'virtio-disk0' />
       <Address type = 'pci' domain = '0x0000' bus = '0x00' slot = '0x04' function = '0x0' />
     </ Disk>