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Description
As kubevirt/openshift virtualization uses libvirt/qemu, it should be possible to backup virtual machines too.
I dont have much experience with k8 but it seems what is required is a so called "sidecar" container that includes virtnbdbackup.
The concept would be:
- kubevirt starts a pod (virt-launcher*) that includes libvirtd/qemu that executes a single virtual machine
- alongside the virt-launcher* pod, another pod with virtnbdbackup included is executed that can then access the libvirtd daemon inside the virt-launcher pod.
- the sidecar has some kind of PVC storage attached where the backup is stored.
- backup is executed and written to PVC
- sidecar pod quits operation
Link with an example sidecar:
https://blog.vmsplice.net/2024/03/how-to-access-libvirt-domains-in.html