[Xen-API] XenAPI Python Question

[Ryan Kahil <rkahil@xxxxxxxxxxxxxxxxxxxx>]

Hello,

I am creating a script that spins up VMs, including the creation of VDIs and VBDs, respectively. But I have came across an issue with it and have been following along the documentation, found here: http://xapi-project.github.io/xen-api/overview.html

When I go to create a disk image, it constantly fails:

Collecting info on the VM Specs.....

Connection Successful!

Checking for template: CentOS 7

Server has 75 VM objects (this includes templates):

Found: OpaqueRef:858d7cdb-6882-7055-74d1-2e6162533d59 CentOS 7

('Selected template: ', 'CentOS 7')

Installing new VM from the template

Adding non-interactive to the kernel commandline

Choosing an SR to instantiate the VM's disks

Choosing SR: NFS VM disks (uuid 95a58c17-6a0d-1d61-33e2-e445a5e147b3)

Rewriting the disk provisioning XML

Creating Disk for VM..... Test

Connection Successful!

Caught ['UUID_INVALID', 'VDI', '95a58c17-6a0d-1d61-33e2-e445a5e147b3']:

Traceback (most recent call last):

  File "/Users/ryankahil/Xen-Builder/bsdxenbuilder.py", line 148, in create_vdi

    src_vdi = session.xenapi.VDI.get_by_uuid(vdi_uuid)

  File "/Library/Python/2.7/site-packages/XenAPI.py", line 229, in __call__

    return self.__send(self.__name, args)

  File "/Library/Python/2.7/site-packages/XenAPI.py", line 133, in xenapi_request

    result = _parse_result(getattr(self, methodname)(*full_params))

  File "/Library/Python/2.7/site-packages/XenAPI.py", line 203, in _parse_result

    raise Failure(result['ErrorDescription'])

Failure: ['UUID_INVALID', 'VDI', '95a58c17-6a0d-1d61-33e2-e445a5e147b3’]

I am following the documentation as best as possible and can’t seem to find out why the UUID is invalid. The SR I am using is NFS if that helps. And have taken some code snippets for VDI and VBD creations in your GitHub repo to see if there is something I am doing wrong but again, the same issue. Here is a snippet of my code:

def create_vdi(ctx,name,sr,readonly,hdspace,diskimage,vdi_uuid):

    click.echo("Creating Disk for VM..... " + name)

    session = xen_session()

    vdi = None

    try:

        src_vdi = session.xenapi.VDI.get_by_uuid(vdi_uuid)

       # sr = session.xenapi.VDI.get_SR(src_vdi)

        vdi_args = session.xenapi.VDI.get_record(src_vdi)

        vdi = session.xenapi.VDI.create(vdi_args)

        create_vbd(name,vdi,readonly,userdevice)

    except Exception, e:

        print("Caught %s: " % str(e))

        traceback.print_exc()

The vdi_uuid is provided in another method:

        sr_pool = session.xenapi.pool.get_all()[0]

        default_sr = session.xenapi.pool.get_default_SR(sr_pool)

        default_sr = session.xenapi.SR.get_record(default_sr)

        print("Choosing SR: %s (uuid %s)" % (default_sr['name_label'], default_sr['uuid']))

        print("Rewriting the disk provisioning XML")

        spec = provision.getProvisionSpec(session, vm)

        spec.setSR(default_sr['uuid'])

        provision.setProvisionSpec(session, vm, spec)

        create = session.xenapi.VM.provision(vm)

        session.xenapi.VM.start(vm,False, True)

        vdi_uuid = default_sr['uuid’]

I have noticed that once the VM is created (in a stopped state due to having no boot disk), simply attaching a DVD drive allows me to install CentOS. But is there a way to programmatically do this with XenAPI (I thought creating the VDI/VBD does this for me)?

Thanks,

Ryan

_______________________________________________
Xen-api mailing list
Xen-api@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-api