mtv-resources-and-services.adoc

{project-short} custom resources and services

{The} {project-first} is provided as an {ocp} Operator. It creates and manages the following custom resources (CRs) and services.

{project-short} custom resources

• Provider CR stores attributes that enable {project-short} to connect to and interact with the source and target providers.

• NetworkMapping CR maps the networks of the source and target providers.

• StorageMapping CR maps the storage of the source and target providers.

• Plan CR contains a list of VMs with the same migration parameters and associated network and storage mappings.

• Migration CR runs a migration plan.

  Only one Migration CR per migration plan can run at a given time. You can create multiple Migration CRs for a single Plan CR.

{project-short} services

• The Inventory service performs the following actions:

  • Connects to the source and target providers.

  • Maintains a local inventory for mappings and plans.

  • Stores VM configurations.

  • Runs the Validation service if a VM configuration change is detected.

• The Validation service checks the suitability of a VM for migration by applying rules.

• The Migration Controller service orchestrates migrations.

  When you create a migration plan, the Migration Controller service validates the plan and adds a status label. If the plan fails validation, the plan status is Not ready and the plan cannot be used to perform a migration. If the plan passes validation, the plan status is Ready and it can be used to perform a migration. After a successful migration, the Migration Controller service changes the plan status to Completed.

• The Populator Controller service orchestrates disk transfers using Volume Populators.

• The Kubevirt Controller and Containerized Data Import (CDI) Controller services handle most technical operations.