core: pass DiskBackup to CreateVolumeContainer

Not passing DiskBackup from ConvertDiskCommand will result in the
allocation policy being overriden and consequnetly fail the conversion.

This patch sets DiskBackup and always passes it to ConvertDiskCommand.

Bug-Url: https://bugzilla.redhat.com/2108012
Signed-off-by: Benny Zlotnik <bzlotnik@redhat.com>

backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/storage/disk/image/ConvertDiskCommand.java

@@ -35,6 +35,7 @@
 import org.ovirt.engine.core.common.businessentities.StorageDomain;
 import org.ovirt.engine.core.common.businessentities.VM;
 import org.ovirt.engine.core.common.businessentities.VdsmImageLocationInfo;
+import org.ovirt.engine.core.common.businessentities.storage.DiskBackup;
 import org.ovirt.engine.core.common.businessentities.storage.DiskImage;
 import org.ovirt.engine.core.common.businessentities.storage.ImageStatus;
 import org.ovirt.engine.core.common.businessentities.storage.VolumeFormat;
@@ -249,6 +250,7 @@ private CreateVolumeContainerCommandParameters createVolumeCreationParameters(Di
         parameters.setParentParameters(getParameters());
         parameters.setEndProcedure(ActionParametersBase.EndProcedure.COMMAND_MANAGED);
         parameters.setParentCommand(getActionType());
+        parameters.setBackup(getBackup(diskImage));
         parameters.setEntityInfo(new EntityInfo(VdcObjectType.Disk, diskImage.getId()));
         return parameters;
     }
@@ -346,6 +348,11 @@ private VolumeFormat getVolumeFormat(DiskImage diskImage) {
                 getParameters().getVolumeFormat();
     }
 
+    private DiskBackup getBackup(DiskImage diskImage) {
+        return getParameters().getBackup() == null ? diskImage.getBackup() :
+                getParameters().getBackup();
+    }
+
     private VdsmImageLocationInfo getLocationInfo() {
         return (VdsmImageLocationInfo) getParameters().getLocationInfo();
     }