Best practice to migrate from VirtualBox to KVM

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Hello community,

For quite some time I'm using Oracle VirtualBox on Linux Hosts to run some Linux and Windows guests on it. Since there are issues with the VBox Guest Additions almost every time a new version of the Guest Additions or the RHEL kernel are is released I'm thinking about to move over to use KVM instead. But I would like to keep my existing VMs and migrate them into KVM VMs.

Did someone of you walk down this path, already? If so you may give me some advise on how to do it?

Is it possible to use VirtualBox and KVM concurrently on one host until the migration is finished? Or at least to use them alternately?

How to convert the VMs? What are the common pitfalls?

Any advice would be appreciated.

Best regards,
Joerg

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