On Wed, Aug 4, 2021 at 1:38 AM Nir Soffer <nsof...@redhat.com> wrote:
> On Tue, Aug 3, 2021 at 7:29 PM KK CHN <kkchn...@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 > > To perform this which modules/packages need to be installed in the rhevm host node ? Does the rhevm hosts come with python3 installed by default ? or I need to install python3 on rhevm node ? Then using pip3 to install the download_disk.py / what the module name to install this sdk ? any dependency before installing this sdk ? like java need to be installed on the rhevm node ? One doubt: came across virt v2v while google search, can virtv2v be used in rhevm node to export VMs to images ? or only from other hypervisors to rhevm only virt v2v supports ? This requires ovirt.conf file: // ovirt.conf file need to be created ? or already there in any rhevm node? > > $ 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 <nsof...@redhat.com> wrote: > >> > >> On Mon, Aug 2, 2021 at 12:22 PM <kkchn...@gmail.com> wrote: > >> > > >> > I have few VMs in Redhat Virtualisation environment RHeV ( using > Rhevm4.1 ) managed by a third party > >> > > >> > 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 > 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 > >> > >
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