I have installed the  ovirt-engine-sdk-python using pip3  in my python3 virtaul environment in my personal laptop


(base) kris@my-ThinkPad-X270:~$ pip install ovirt-engine-sdk-python
Collecting ovirt-engine-sdk-python
  Downloading ovirt-engine-sdk-python-4.4.14.tar.gz (335 kB)
     |████████████████████████████████| 335 kB 166 kB/s
Collecting pycurl>=7.19.0
  Downloading pycurl-7.43.0.6.tar.gz (222 kB)
     |████████████████████████████████| 222 kB 496 kB/s
Requirement already satisfied: six in ./training/lib/python3.7/site-packages (from ovirt-engine-sdk-python) (1.15.0)
Building wheels for collected packages: ovirt-engine-sdk-python, pycurl
  Building wheel for ovirt-engine-sdk-python (setup.py) ... done
  Created wheel for ovirt-engine-sdk-python: filename=ovirt_engine_sdk_python-4.4.14-cp37-cp37m-linux_x86_64.whl size=300970 sha256=128ee03642c36094d62a04435bf5def1e5f8eb2c800f97132e8da02665d227a8
  Stored in directory: /home/kris/.cache/pip/wheels/2f/65/60/6a222dcdec777ae59bacb3f51a0a93e6cf9547b82cb0102db6
  Building wheel for pycurl (setup.py) ... done
  Created wheel for pycurl: filename=pycurl-7.43.0.6-cp37-cp37m-linux_x86_64.whl size=269770 sha256=2cf705a2246041f9eaa5cbb19c530470edad7f476a0a7eb04c4877931699bea9
  Stored in directory: /home/kris/.cache/pip/wheels/f2/32/dc/9ccf4566cfe0a7a11ee304c11af36a1e341a16fa30e74fb26e
Successfully built ovirt-engine-sdk-python pycurl
Installing collected packages: pycurl, ovirt-engine-sdk-python
Successfully installed ovirt-engine-sdk-python-4.4.14 pycurl-7.43.0.6
WARNING: You are using pip version 21.0.1; however, version 21.2.2 is available.
You should consider upgrading via the '/home/kris/training/bin/python3.7 -m pip install --upgrade pip' command.
(base) kris@my-ThinkPad-X270:~$ which pip
/home/kris/anaconda3/bin/pip
(base) kris@my-ThinkPad-X270:~$ pip --version
pip 21.0.1 from /home/kris/training/lib/python3.7/site-packages/pip (python 3.7)
(base) kris@my-ThinkPad-X270:~$ pwd
/home/kris


and Created file  in the user kris home directory in the same laptop  // Is what I am doing right ?

(base) kris@my-ThinkPad-X270:~$ cat ~/.config/ovirt.conf
[engine-dev]
engine_url=https://engine-dev   // what is this engine url ? its the rhevm ovirt url this our service provider may can provide right ?
username=admin@internal  
password=mypassword
cafile=/etc/pki/vdsm/certs/cacert.pem     // I dont have any cacert.pem file  in my laptop's /etc/pki/vdsm/certs/cacert.pem  no folder at all like this
(base) kris@my-ThinkPad-X270:~$ pwd
/home/kris
(base) kris@my-ThinkPad-X270:~$


But  I couldn't find any examples folder where I can find the download_disk.py   // So I have downloaded files for ovirt-engne-sdk-python-4.1.3.tar.gz

and untarred the files where I am able to find the  download_disk.py

#####

(base) kris@my-ThinkPad-X270:~/OVIRT_PYTON_SDK_SOURCE_FILES/ovirt-engine-sdk-python-4.1.3/examples$ ls
add_affinity_label.py            add_vm_from_template_version.py    follow_vm_links.py       set_vm_lease_storage_domain.py
add_bond.py                      add_vm_nic.py                      get_display_ticket.py    set_vm_serial_number.py
add_cluster.py                   add_vm.py                          import_external_vm.py    show_summary.py
add_data_center.py               add_vm_snapshot.py                 import_vm.py             start_vm.py
add_floating_disk.py             add_vm_with_sysprep.py             list_affinity_labels.py  start_vm_with_boot_devices.py
add_group.py                     add_vnc_console.py                 list_glance_images.py    start_vm_with_cloud_init.py
add_host.py                      assign_affinity_label_to_vm.py     list_roles.py            stop_vm.py
add_independet_vm.py             assign_permission.py               list_tags_of_vm.py       test_connection.py
add_instance_type.py             assign_tag_to_vm.py                list_tags.py             unassign_tag_to_vm.py
add_mac_pool.py                  attach_nfs_data_storage_domain.py  list_vm_disks.py         update_data_center.py
add_nfs_data_storage_domain.py   attach_nfs_iso_storage_domain.py   list_vm_snapshots.py     update_fencing_options.py
add_nfs_iso_storage_domain.py    change_vm_cd.py                    list_vms.py              update_quota_limits.py
add_openstack_image_provider.py  clone_vm_from_snapshot.py          page_vms.py              upload_disk.py
add_role.py                      connection_builder.py              remove_host.py           vm_backup.py
add_tag.py                       disable_compression.py             remove_tag.py
add_user_ssh_public_key.py       download_disk.py                   remove_vm.py
add_vm_disk.py                   enable_serial_console.py           search_vms.py
(base) kris@my-ThinkPad-X270:~/OVIRT_PYTON_SDK_SOURCE_FILES/ovirt-engine-sdk-python-4.1.3/examples$

Can I execute now the following from my laptop ? so that it will connect to the rhevm host node and download the disks ?

(base) kris@my-ThinkPad-X270:$ python3 download_disk.py  -c engine-dev MY_vm_blah_Id /var/tmp/disk1.raw      //is this correct ?

My laptop doesn't have space to accommodate 300 GB  so can I attache a usb harddisk and can I specify its mount point ? or any other suggestions or correcton ?  Because its a live host. I can't do trail and error on service maintainer's rhevm host machines.

kindly correct me if any thing wrong in my steps .  I have to perform this script running on mylaptop to  rhevm host machines without breaking anything.

Kindly guide me. 

Kris