Hi all, 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 On Wed, Aug 4, 2021 at 1:38 AM Nir Soffer <nsoffer@redhat.com> wrote:
On Tue, Aug 3, 2021 at 7:29 PM KK CHN <kkchn.in@gmail.com> wrote:
I have asked our VM maintainer to run the command
# virsh -r dumpxml vm-name_blah //as Super user
But no output : No matching domains found that was the TTY output on
that rhevm node when I executed the command.
Then I tried to execute # virsh list // it doesn't list any VMs
!!! ( How come this ? Does the Rhevm node need to enable any CLI with License key or something to list Vms or to dumpxml with virsh ? or its CLI commands ?
RHV undefine the vms when they are not running.
Any way I want to know what I have to ask the maintainer to provide a working a working CLI or ? which do the tasks expected to do with command line utilities in rhevm.
If the vm is not running you can get the vm configuration from ovirt using the API:
GET /api/vms/{vm-id}
You may need more API calls to get info about the disks, follow the <links> in the returned xml.
I have one more question : Which command can I execute on an rhevm node to manually export ( not through GUI portal) a VMs to required format ?
For example; 1. I need to get one VM and disks attached to it as raw images. Is this possible how?
and another 2. VM and disk attached to it as Ova or( what other good format) which suitable to upload to glance ?
Arik can add more info on exporting.
Each VMs are around 200 to 300 GB with disk volumes ( so where should be the images exported to which path to specify ? to the host node(if the host doesn't have space or NFS mount ? how to specify the target location where the VM image get stored in case of NFS mount ( available ?)
You have 2 options: - Download the disks using the SDK - Export the VM to OVA
When exporting to OVA, you will always get qcow2 images, which you can later convert to raw using "qemu-img convert"
When downloading the disks, you control the image format, for example this will download the disk in any format, collapsing all snapshots to the raw format:
$ python3 /usr/share/doc/python3-ovirt-engine-sdk4/examples/download_disk.py -c engine-dev 3649d84b-6f35-4314-900a-5e8024e3905c /var/tmp/disk1.raw
This requires ovirt.conf file:
$ cat ~/.config/ovirt.conf [engine-dev] engine_url = https://engine-dev username = admin@internal password = mypassword cafile = /etc/pki/vdsm/certs/cacert.pem
Nir
Thanks in advance
On Mon, Aug 2, 2021 at 8:22 PM Nir Soffer <nsoffer@redhat.com> wrote:
On Mon, Aug 2, 2021 at 12:22 PM <kkchn.in@gmail.com> wrote:
I have few VMs in Redhat Virtualisation environment RHeV ( using
Now I am in the process of migrating those VMs to my cloud setup
with OpenStack ussuri version with KVM hypervisor and Glance storage.
The third party is making down each VM and giving the each VM image
with their attached volume disks along with it.
There are three folders which contain images for each VM . These folders contain the base OS image, and attached LVM disk images
( from time to time they added hard disks and used LVM for storing data ) where data is stored.
Is there a way to get all these images to be exported as Single
image file Instead of multiple image files from Rhevm it self. Is this
Rhevm4.1 ) managed by a third party possible ?
If possible how to combine e all these disk images to a single image
and that image can upload to our cloud glance storage as a single image ?
It is not clear what is the vm you are trying to export. If you share the libvirt xml of this vm it will be more clear. You can use "sudo virsh -r dumpxml vm-name".
RHV supports download of disks to one image per disk, which you can move to another system.
We also have export to ova, which creates one tar file with all exported disks, if this helps.
Nir