[ovirt-users] Re: Combining Virtual machine image with multiple disks attached
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 ?
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.
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 ?
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 ?)
Thanks in advance
On Mon, Aug 2, 2021 at 8:22 PM Nir Soffer <nsoffer(a)redhat.com> wrote:
On Mon, Aug 2, 2021 at 12:22 PM <kkchn.in(a)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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