PVC with  5.27 GiB unable to bound due to dv stuck import in progress with 5Gi storage size requst when image is larger than 5Gi

gcnv-4.20 

100% reproducable 

1.deploy a cnv,gcnv cluster
2.create a dv within the gcnv storageclass, dv request size = 5Gi, image:URL:  docker://quay.io/openshift-cnv/qe-cnv-tests-fedora:41

apiVersion: cdi.kubevirt.io/v1beta1
kind: DataVolume
metadata:
  annotations:
    cdi.kubevirt.io/storage.usePopulator: "true"
  creationTimestamp: "2025-07-30T10:17:45Z"
  generation: 1
  name: import-public-registry-low-capacity-dv
  namespace: cdi-import-test-import-registr
  resourceVersion: "1823395"
  uid: c46bc4f6-1ccf-4a72-a346-5cebc6ccd9ff
spec:
  contentType: kubevirt
  source:
    registry:
      url: docker://quay.io/openshift-cnv/qe-cnv-tests-fedora:41
  storage:
    resources:
      requests:
        storage: 5Gi
    storageClassName: gcnv-flex




3.wait for dv import 
(notice the pvc CAPACITY is larger than 5Gi)

oc get pvc -A
NAMESPACE                        NAME                                                 STATUS    VOLUME                                     CAPACITY     ACCESS MODES   STORAGECLASS   VOLUMEATTRIBUTESCLASS   AGE
cdi-import-test-import-registr   import-public-registry-low-capacity-dv               Pending                                                                          gcnv-flex      <unset>                 57s
cdi-import-test-import-registr   prime-e99808ce-70db-4de4-825a-e242e868af15           Bound     pvc-266c4bfc-9e41-4db9-93c7-6c2e0590b46b   5663988122   RWX            gcnv-flex      <unset>                 57s
cdi-import-test-import-registr   prime-e99808ce-70db-4de4-825a-e242e868af15-scratch   Bound     pvc-0deadfd1-94d0-48b5-9ddc-c53ab51b7bdb   5402Mi       RWO            gcnv-flex      <unset>                 57s





from the DV will get:
 Type     Reason            Age    From                          Message
  ----     ------            ----   ----                          -------
  Normal   Pending           2m25s  datavolume-import-controller  PVC import-public-registry-low-capacity-dv Pending
  Warning  Unschedulable     2m25s  datavolume-import-controller  Importer pod cannot be scheduled
  Normal   ImportScheduled   97s    datavolume-import-controller  Import into import-public-registry-low-capacity-dv scheduled
  Normal   ImportInProgress  89s    datavolume-import-controller  Import into import-public-registry-low-capacity-dv in progress
  Warning  Error             42s    datavolume-import-controller  DataVolume too small to contain image

 datavolume-import-controller  DataVolume too small to contain image
Unable to process data: Unable to convert source data to target format: virtual image size 5368709120 is larger than the reported available storage 5368381440. A larger PVC is required

auto expand / round up the dv size up to 6gi or any fit size 

in different sc (filesytem) ocs-storagecluster-cephfs (for instance)
i see dv was expand / rounded to 6Gi which fit the image (the dv request was 5Gi) 
 
oc get pvc -A
NAMESPACE                            NAME                                                           STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS                VOLUMEATTRIBUTESCLASS   AGE
cdi-import-test-import-registr       import-public-registry-low-capacity-dv                         Bound    pvc-187f562b-7bde-4c25-a6f6-a074da88327a   6Gi        RWX            ocs-storagecluster-cephfs   <unset>                 114s

T2 test::test_public_registry_data_volume_low_capacity