Description of problem:

Currently, we have migrated dataImage from the source cluster to the target cluster. but the iso file does not exist in the target cluster.

Attach claude's output about dataImage in IBI:

  DataImage Lifecycle in Image-Based Installation

  1. Creation - During Installation Setup

  // controllers/imageclusterinstall_controller.go:749-768
  log.Infof("creating new dataImage for BareMetalHost (%s/%s)", bmh.Name, bmh.Namespace)
  dataImage = &bmh_v1alpha1.DataImage{
      ObjectMeta: metav1.ObjectMeta

{           Name:      bmh.Name,           Namespace: bmh.Namespace,       }

,
      Spec: bmh_v1alpha1.DataImageSpec

{           URL: url,  // Points to the configuration ISO       }

,
  }
  - When: Before the host boots to start installation
  - Purpose: Attach the configuration ISO containing install-config, network config, etc.

  2. Active Use - During Installation

  // Line 717: Check if DataImage is attached before rebooting
  if dataImage.Status.AttachedImage.URL == "" && !setAnnotationIfNotExists(&bmh.ObjectMeta, rebootAnnotation, rebootAnnotationValue)

{       log.Infof("Adding reboot annotations to BareMetalHost (%s/%s)", bmh.Namespace, bmh.Name)   }

  - When: Host boots from the attached ISO
  - Purpose: The ISO provides configuration data for the installation process
  - Duration: From boot until installation completes

  3. Deletion - After Installation Completes

  // controllers/imageclusterinstall_controller.go:1354-1361 (finalizer)
  dataImage, err := r.removeBMHDataImage(ctx, log, key)
  if err != nil {
      return ctrl.Result{}, true, fmt.Errorf("failed to delete DataImage %s/%s: %w", key.Namespace, key.Name, err)
  }
  if dataImage != nil

{       log.Infof("Waiting for DataImage %s/%s to get deleted", key.Namespace, key.Name)       return ctrl.Result\{RequeueAfter: 1 * time.Minute}

, true, nil
  }
  - When: When ImageClusterInstall is deleted
  - Purpose: Clean up - the installed cluster doesn't need the ISO anymore

  Why DataImage Isn't Needed After Installation

  After the installation completes:

  1. Cluster is installed to disk - The SNO cluster now runs from the disk, not from the ISO
  2. Detached annotation added - The BMH is marked as detached to prevent Metal3 interference
  3. DataImage becomes unnecessary - The configuration ISO served its purpose

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