[ovirt-users] Cannot create VM with custom memory amount

[Ondra Machacek]

On Mon, Jan 9, 2017 at 6:06 PM, Logan Kuhn <support at jac-properties.com> wrote:
> I'm working on a program that should take a set of variables for the name,
> ram and disk space as well as how many disks (IE, 3 at 10, 15 and 20GB).
> Most of that works, but if I try and specify an integer value for memory it
> will seemingly always fail.  I'm using Python 3, code and error are below.
>
> def create_vm(name, ram, cpu=None):
>         garbled_passwd = 'd3lrazNwa2wjUnI='
>
>         logging.basicConfig(level=logging.DEBUG,
> filename=os.path.join(baseDir, 'list_vms.log'))
>
>         # This example will connect to the server and create a new virtual
> machine:
>
>         # Create the connection to the server:
>         connection = sdk.Connection(
>             url='https://ovirt.example.com/ovirt-engine/api',
>             username='admin at internal',
>             password=base64.b64decode(garbled_passwd).decode('utf-8'),
>             ca_file='/etc/pki/tls/certs/examplecert.pem',
>             debug=True,
>             log=logging.getLogger(),
>         )
>
>         # Get the reference to the "vms" service:
>         vms_service = connection.system_service().vms_service()
>
>         # Use the "add" method to create a new virtual machine:
>         cpu = types.CpuTopology(cores=2, sockets=1)
>
>         vms_service.add(
>             types.Vm(
>                 name=name,
>                 memory=400,

The memory parameter is in bytes.
So for example to create vm with 2GiB of memory please pass following value:

 memory=2 * 2**30,

>                 cpu=types.Cpu(topology=cpu),
>                 cluster=types.Cluster(
>                     name='Default',
>                 ),
>                 template=types.Template(
>                     name='Blank',
>                 ),
>             ),
>         )
>
>         # Close the connection to the server:
>         connection.close()
>
> ovirtsdk4.Error: Fault reason is "Operation Failed". Fault detail is
> "[Cannot add VM. Physical Memory Guaranteed cannot exceed Memory Size.]".
> HTTP response code is 400.
>
> The Template is unmodified from installation time.  I know the other
> settings are right because if I comment out the memory line then it creates
> a VM with the memory value from the "Blank" template.
>
> Regards,
> Logan
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>