kubeovn / kube-ovn / 18705377874

23%

Build Type

push

github

Committed by web-flow

Commit Message

fix: prevent GC from deleting KubeVirt VM interfaces (#5814)

The garbage collector introduced in PR #5789 incorrectly identifies
KubeVirt VM interfaces as 'lost' and deletes them, breaking network
connectivity for VMs within ~60 seconds of creation.

Root cause: For KubeVirt VMs, the pod_name in OVS external_ids is set
to the VM name (e.g., 'ubuntu-vm-br'), not the launcher pod name
(e.g., 'virt-launcher-ubuntu-vm-br-xyz'). When gcInterfaces() tries
to look up the pod by the VM name, it fails and incorrectly deletes
the interface.

Solution: When a pod is not found by direct lookup, check if it might
be a KubeVirt VM by searching for launcher pods with the label
'vm.kubevirt.io/name' matching the pod_name from OVS. If a matching
launcher pod exists, keep the interface instead of deleting it.

This fix maintains backward compatibility with non-KubeVirt pods
while preventing false-positive deletions for KubeVirt VMs.

Signed-off-by: dnugmanov <damir_nug@mail.ru>

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