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VM Creation (DataSource Clone)

Tests VM creation using KubeVirt DataSource cloning for efficient VM provisioning.

Use Case: Measure VM provisioning performance with your storage backend.

For boot-storm scenarios (mass simultaneous VM startup), see the dedicated Boot Storm Testing guide.

Basic VM Creation Test

# Run performance test using the vm template
virtbench datasource-clone \
  --start 1 \
  --end 100 \
  --vm-name VM-NAME \
  --namespace-prefix NS-PREFIX \
  --vm-template ../examples/vm-templates/rhel9-vm-datasource.yaml \
  --save-results \
  --storage-driver STORAGE-DRIVER

# Run performance test using your storage class using default templates
virtbench datasource-clone \
  --start 1 \
  --end 100 \
  --vm-name VM-NAME \
  --namespace-prefix NS-PREFIX \
  --storage-class YOUR-STORAGE-CLASS \
  --save-results \
  --storage-driver STORAGE-DRIVER

Advanced Options

Namespace Batch Creation

# Create namespaces in batches of 30 for faster setup
virtbench datasource-clone \
  --start 1 \
  --end 100 \
  --vm-name VM-NAME \
  --namespace-prefix NS-PREFIX \
  --storage-class YOUR-STORAGE-CLASS \
  --namespace-batch-size 30 \
  --save-results \
  --storage-driver STORAGE-DRIVER

Save Results

# Save results to JSON and CSV files
virtbench datasource-clone \
  --start 1 \
  --end 100 \
  --vm-name VM-NAME \
  --namespace-prefix NS-PREFIX \
  --storage-class YOUR-STORAGE-CLASS \
  --save-results \
  --storage-driver STORAGE-DRIVER

Saved runs are written under:

results/{storage-driver}/{num-disks}-disk/{timestamp}_{namespace-prefix}_{start}-{end}/

The run log is saved in the same folder as the JSON and CSV result files.

Cleanup

# Cleanup resources after test
virtbench datasource-clone \
  --start 1 \
  --end 100 \
  --vm-name VM-NAME \
  --namespace-prefix NS-PREFIX \
  --cleanup

# Cleanup even if tests fail
virtbench datasource-clone \
  --start 1 \
  --end 100 \
  --vm-name VM-NAME \
  --namespace-prefix NS-PREFIX \
  --cleanup-on-failure

# Dry run to see what would be deleted
virtbench datasource-clone \
  --start 1 \
  --end 100 \
  --vm-name VM-NAME \
  --namespace-prefix NS-PREFIX \
  --dry-run-cleanup

See Also