[ovirt-devel] [ovirt-users] Ovirt 4.1 USB Api problems

[Michal Skrivanek]

adding the list back for future reference

Hi,

this is most probably a bug being tracked as
https://bugzilla.redhat.com/attachment.cgi?id=1260877 <https://bugzilla.redhat.com/attachment.cgi?id=1260877>. The fix is
merged but not yet released.

A workaround could be re-adjusting of usb settings ofter VM creation
by a separate updating request.

Regards
Jakub

> On 16 Mar 2017, at 11:49, Michal Skrivanek <michal.skrivanek at redhat.com> wrote:
> 
> 
>> On 16 Mar 2017, at 11:38, Adolfo <agomez at virtualcable.es> wrote:
>> 
>> Hi,
>> 
>> I don't know if this is the correct place for this question (i hope it is  ;-) ).
>> 
>> We are trying to make "enable USB support" work with a machine created from python ovirtsdk4 api,
>> 
>> here is the code:
>> 
>>           cluster = ovirt.types.Cluster(id=six.binary_type(clusterId))
>>           template = ovirt.types.Template(id=six.binary_type(templateId))
>>           if usbType in ('native', 'legacy'):
>>               usb = ovirt.types.Usb(enabled=True, type=ovirt.types.UsbType.NATIVE if usbType == 'native' else ovirt.types.UsbType.LEGACY)
> 
> legacy is no longer supported in 4.0 (and not needed/useful since 3.6 already)
> 
>>           else:
>>               usb = ovirt.types.Usb(enabled=False)
>> 
>>           memoryPolicy = ovirt.types.MemoryPolicy(guaranteed=guaranteedMB * 1024 * 1024)
>>           par = ovirt.types.Vm(name=name, cluster=cluster, template=template, description=comments,
>> type=ovirt.types.VmType.DESKTOP, memory=memoryMB * 1024 * 1024, memory_policy=memoryPolicy,
>>                           usb=usb)  # display=display,
>> 
>>           return api.system_service().vms_service().add(par).id
>> 
>> 
>> The cuestion is that the machines gets correctly created, but when we try to start the machine, we get an this error (extract from vdsm):
>> 
>> Traceback (most recent call last):
>> File "/usr/share/vdsm/virt/vm.py", line 552, in _startUnderlyingVm
>>   self._run()
>> File "/usr/share/vdsm/virt/vm.py", line 1994, in _run
>>   self._connection.createXML(domxml, flags),
>> File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 123, in wrapper
>>   ret = f(*args, **kwargs)
>> File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 941, in wrapper
>>   return func(inst, *args, **kwargs)
>> File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3784, in createXML
>>   if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self)
>> libvirtError: Error XML: Duplicate USB controllers with index 0
>> 
>> The question is, that if to this machine we have created, from administration interface, remove an add support for usb, the machine works, and the generated XML differs:
>> 
>> This is the difference we have found:
>> 
>> <         <controller index="0" model="piix3-uhci" type="usb">
>> <             <address bus="0x00" domain="0x0000" function="0x2" slot="0x01" type="pci" />
>> <         </controller>
>> 40a38
>>>            <address bus="0x00" domain="0x0000" function="0x0" slot="0x02" type="pci" />
>> 
>> The "<" are from the non working (created from API call), and the ">" are same machine after disabling and enabling again "usb support".
>> 
>> Is this a bug?, if not, ¿How is supposed to be enabled USB support from API on VM  Creation?,
>> 
>> By the way, the equivalent code for oVirt 3.x was working without problems, the problems arises from 4.0 onwards.
> 
> Sounds like bug, adding Jakub
> 
>> 
>> 
>> Sorry for the inconveniences, and thank in advance for any help,
>> 
>> 
>> Adolfo Gómez
>> 
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
> 

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