Add snapshot size to VSC created for VGS

Currently the RestoreSize is missing when
the corresponding VSC are created for the
the volumesnapshotgroup, This PR adds the missing
RestoreSize for VSC.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

pkg/sidecar-controller/groupsnapshot_helper.go

@@ -477,6 +477,11 @@ func (ctrl *csiSnapshotSideCarController) createGroupSnapshotWrapper(groupSnapsh
 		if err != nil {
 			return groupSnapshotContent, err
 		}
+
+		_, err = ctrl.updateSnapshotContentStatus(volumeSnapshotContent, snapshot.SnapshotId, snapshot.ReadyToUse, snapshot.CreationTime.AsTime().UnixNano(), snapshot.SizeBytes, groupSnapshotID)
+		if err != nil {
+			return groupSnapshotContent, err
+		}
 	}
 
 	newGroupSnapshotContent, err := ctrl.updateGroupSnapshotContentStatus(groupSnapshotContent, groupSnapshotID, readyToUse, creationTime.UnixNano(), snapshotContentNames)

pkg/sidecar-controller/snapshot_controller.go

@@ -446,11 +446,13 @@ func (ctrl *csiSnapshotSideCarController) updateSnapshotContentStatus(
 			SnapshotHandle: &snapshotHandle,
 			ReadyToUse:     &readyToUse,
 			CreationTime:   &createdAt,
-			RestoreSize:    &size,
 		}
 		if groupSnapshotID != "" {
 			newStatus.VolumeGroupSnapshotHandle = &groupSnapshotID
 		}
+		if size > 0 {
+			newStatus.RestoreSize = &size
+		}
 		updated = true
 	} else {
 		newStatus = contentObj.Status.DeepCopy()
@@ -469,7 +471,7 @@ func (ctrl *csiSnapshotSideCarController) updateSnapshotContentStatus(
 			newStatus.CreationTime = &createdAt
 			updated = true
 		}
-		if newStatus.RestoreSize == nil {
+		if newStatus.RestoreSize == nil && size > 0 {
 			newStatus.RestoreSize = &size
 			updated = true
 		}