Migrate from oVirt/RHEV to Cloudstack

[Sparc0]

Has anyone here done any migration from oVirt/RHEV to Cloudstack?
Why i ask is because its KVM maybe someone has been able to come up with a simple migration workflow.

Since oVirt/RHEV libvirtd is not listening on a external ports i cant use the Import-Export instance tool in CS WebUI.
If i don't reconfigure libvirtd on my ovirt nodes but dont feel like a good idea.

We use Ceph for both oVirt and CS but different clusters.
Maybe i just connect my CS to that Ceph cluster and import the qcow files that way.

[SviridoffA]

You can simply export a qcow2 disk from oVirt. Upload this disk to Cloudstack, then create a virtual machine with the required parameters. Finally, attach this disk to the VM and specify ID 0 for the disk so that the VM can boot from it.

[Sparc0]

When we did the POC for CS we did a test migration similar to what you wrote. It works for a few VM's but not hundreds.

Turn off the VM you want to migrate.
get the VM's volume id by checking under Storage -> Disks.
Copy the ID
On any ovirt hypervisor do: rbd export ovirt.rbd/volume- /.raw
SCP this raw file to any cloudstack hypervisor and do: rbd import server1-root.raw cs_primary/server1
Go to Cloudstack UI under Tools -> Import Data Volume
Choose the correct storage pool and your imported RBD should show up as unmanaged.
Click to make it managed.
Create a new instance
Attach the volume you imported to the instance using Device ID: 0 (Imported else the disk will not be root disk)
Start the Instance.

[SviridoffA]

You're right, my solution only works for a few VMs. I didn't catch that you meant a mass migration. Unfortunately, I haven't done any large-scale migrations between these two systems before.

[Ezio1001]

Hello @Sparc0,

I wanted to get back to you in a comment but thought it wouldn't be clear enough.
So I made it into a "Show and Tell" post.
#13085
Hope it helps.

[Sparc0]

Thanks a lot will take a look at it.