[ovirt-users] ovirt-engine-sdk-python-4.1 clone a vm from snapshot

[Niyazi Elvan]

Hello Juan !

Thank you very much ! I am quite new to ovirt sdk and I really appreciate
your help.

 ** with 4.0 I actually meant 3.6 , my typo :)





On Wed, Mar 8, 2017 at 9:18 PM, Juan Hernández <jhernand at redhat.com> wrote:

> On 03/08/2017 06:53 PM, Niyazi Elvan wrote:
> > Hi Folks !
> >
> > I am looking for a documentation for ovirt-engine-sdk-python-4.1 but
> > could not find anything yet. Looks like there are many changes compared
> > to 4.0.
> >
>
> Version 4.1 of the SDK isn't very different for version 4.0. It is very
> different from version 3.6.
>
> Note that version 3 of the API, and version 3 of the SDK are deprecated
> since version 4.0 of the engine, and they will be removed in version 4.2
> of the engine.
>
> There is a general description of version 4 of the SDK here:
>
>   https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/README.adoc
>
> A collection of examples here:
>
>   https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk/examples
>
> And reference documentation here:
>
>   http://ovirt.github.io/ovirt-engine-sdk/4.1
>
> You may also find useful the documentation of the API itself:
>
>   http://ovirt.github.io/ovirt-engine-api-model/4.1
>
> Specially the section that describes how to add virtual machines, as
> there is an example of how to add a virtual machine from a snapshot there:
>
>
> http://ovirt.github.io/ovirt-engine-api-model/4.1/#
> services/vms/methods/add
>
> > Can anyone help me about how to clone a VM from a snapshot using the
> > latest sdk ?
> >
>
> To create a virtual machine from a snapshot with the latest version of
> the SDK you will need something like this:
>
> ---8<---
> import time
>
> import ovirtsdk4 as sdk
> import ovirtsdk4.types as types
>
> # This example shows how to clone a virtual machine from an snapshot.
>
> # Create the connection to the server:
> connection = sdk.Connection(
>     url='https://engine.example.com/ovirt-engine/api',
>     username='admin at internal',
>     password='...',
>     ca_file='ca.pem'
> )
>
> # Get the reference to the root of the tree of services:
> system_service = connection.system_service()
>
> # Find the virtual machine:
> vms_service = system_service.vms_service()
> vm = vms_service.list(search='name=myvm')[0]
>
> # Find the service that manages the virtual machine:
> vm_service = vms_service.vm_service(vm.id)
>
> # Find the snapshot. Note that the snapshots collection doesn't support
> # search, so we need to retrieve the complete list and the look for the
> # snapshot that has the description that we are looking for.
> snaps_service = vm_service.snapshots_service()
> snaps = snaps_service.list()
> snap = next(
>   (s for s in snaps if s.description == 'mysnap'),
>   None
> )
>
> # Create a new virtual machine, cloning it from the snapshot:
> cloned_vm = vms_service.add(
>     vm=types.Vm(
>         name='myclonedvm',
>         snapshots=[
>             types.Snapshot(
>                 id=snap.id
>             )
>         ],
>         cluster=types.Cluster(
>             name='mycluster'
>         )
>     )
> )
>
> # Find the service that manages the cloned virtual machine:
> cloned_vm_service = vms_service.vm_service(cloned_vm.id)
>
> # Wait till the virtual machine is down, as that means that the creation
> # of the disks of the virtual machine has been completed:
> while True:
>     time.sleep(5)
>     cloned_vm = cloned_vm_service.get()
>     if cloned_vm.status == types.VmStatus.DOWN:
>         break
>
> # Close the connection to the server:
> connection.close()
> --->8---
>



-- 
Niyazi Elvan
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