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Bug
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Resolution: Done
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Major
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2.8.5
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Quality / Stability / Reliability
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1
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False
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True
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Important
Description of problem:
Created a virtual machine with "Operating System" type "Linux" in RHV, the inventory cache of forklift have other_linux as OS type:
# oc exec -c inventory forklift-controller-7f56fc46ff-5crp5 -- sh -c 'export token=`cat /var/run/secrets/kubernetes.io/serviceaccount/token`;curl -k -X GET -H "Authorization: Bearer $token" https://127.0.0.1:8443/providers/ovirt/87d83c9c-39da-498f-901b-f2e4ee381e14/vms/b1526bfc-509e-47c2-938f-94dc8705a24b' 2>/dev/null |jq '.osType' "other_linux"
This will not match any cluster preference and fallback to template selection:
{"level":"info","ts":"2025-06-05 05:56:35.421","logger":"plan|6nw2f","msg":"Building VirtualMachine without a VirtualMachinePreference.","plan":{"name":"nijin-mtv","namespace":"openshift-mtv"},"migration":"openshift-mtv/nijin-mtv-rt6kx","vm":" id:b1526bfc-509e-47c2-938f-94dc8705a24b name:'nijin-mtv' ","err":"couldn't find a corresponding preference"}
For template selection, it will search for templates with label rhel8.1 for this case as per https://github.com/kubev2v/forklift/blob/v2.8.3/pkg/controller/plan/adapter/ovirt/builder.go#L571-L572
That will be rhel8 templates and in OpenShift Virtualization < 4.18, these templates have "running" in spec:
oc get template rhel8-server-medium -o yaml |yq '.objects[0].spec' dataVolumeTemplates: - apiVersion: cdi.kubevirt.io/v1beta1 kind: DataVolume metadata: ... ... ... requests: storage: 30Gi running: false <=== template: metadata: ... ...
Forklift then also sets runStrategy here https://github.com/kubev2v/forklift/blob/v2.8.3/pkg/controller/plan/kubevirt.go#L1470-L1475
So the VM creation fails with following error:
- description: Create VM. error: phase: Running reasons: - 'admission webhook "virtualmachine-validator.kubevirt.io" denied the request: Running and RunStrategy are mutually exclusive' name: VirtualMachineCreation phase: Running progress: completed: 0 total: 1 started: "2025-06-05T05:56:34Z" restorePowerState: "On" started: "2025-06-05T05:51:23Z"
Issue is not reproducible with 4.18 where in this version, templates have "runStrategy":
Version-Release number of selected component (if applicable):
Migration Toolkit for Virtualization Operator 2.8.5 OpenShift Virtualization 4.17.11
How reproducible:
Always
Steps to Reproduce:
1. Create a VM with OS type "Linux" in RHV. 2. Try migrating this VM using MTV. 3. Migration fails
Actual results:
Migration from RHV to OpenShift Virtualization is failing with error "Running and RunStrategy are mutually exclusive"
Expected results:
Additional info:
