diff --git a/tests/storage-xml/pool-logical-vol.xml b/tests/storage-xml/pool-logical-vol.xml
index 8f483731..aaca040f 100644
--- a/tests/storage-xml/pool-logical-vol.xml
+++ b/tests/storage-xml/pool-logical-vol.xml
@@ -1,7 +1,7 @@
 <volume>
   <name>pool-logical-vol</name>
   <capacity>10737418240</capacity>
-  <allocation>5368709120</allocation>
+  <allocation>10737418240</allocation>
   <target>
     <permissions>
       <mode>0700</mode>
diff --git a/tests/storage-xml/pool-logical-volclone.xml b/tests/storage-xml/pool-logical-volclone.xml
index 42005857..ef53c6cc 100644
--- a/tests/storage-xml/pool-logical-volclone.xml
+++ b/tests/storage-xml/pool-logical-volclone.xml
@@ -5,7 +5,7 @@
   <source>
   </source>
   <capacity unit="bytes">10737418240</capacity>
-  <allocation unit="bytes">5368709120</allocation>
+  <allocation unit="bytes">10737418240</allocation>
   <target>
     <path>/some/target/path/pool-logical-vol</path>
     <permissions>
diff --git a/tests/storage-xml/pool-logical-volinput.xml b/tests/storage-xml/pool-logical-volinput.xml
index 5abaf374..d51a9b06 100644
--- a/tests/storage-xml/pool-logical-volinput.xml
+++ b/tests/storage-xml/pool-logical-volinput.xml
@@ -1,7 +1,7 @@
 <volume>
   <name>pool-logical-volinput</name>
   <capacity>10737418240</capacity>
-  <allocation>5368709120</allocation>
+  <allocation>10737418240</allocation>
   <target>
     <permissions>
       <mode>0700</mode>
diff --git a/virtinst/Storage.py b/virtinst/Storage.py
index 1a39641c..a80875aa 100644
--- a/virtinst/Storage.py
+++ b/virtinst/Storage.py
@@ -1350,8 +1350,8 @@ class LogicalVolume(StorageVolume):
     def __init__(self, name, capacity, pool=None, pool_name=None, conn=None,
                  allocation=None, perms=None):
         if allocation and allocation != capacity:
-            raise ValueError(_("Sparse logical volumes are not supported, "
-                               "allocation must be equal to capacity"))
+            logging.warn(_("Sparse logical volumes are not supported, "
+                           "setting allocation equal to capacity"))
         StorageVolume.__init__(self, name=name, pool=pool, pool_name=pool_name,
                                allocation=capacity, capacity=capacity,
                                conn=conn)
@@ -1365,9 +1365,9 @@ class LogicalVolume(StorageVolume):
 
     def set_allocation(self, allocation):
         if allocation != self.capacity:
-            raise ValueError(_("Sparse logical volumes are not supported, "
-                               "allocation must be equal to capacity"))
-        super(LogicalVolume, self).set_allocation(allocation)
+            logging.warn(_("Sparse logical volumes are not supported, "
+                           "setting allocation equal to capacity"))
+        super(LogicalVolume, self).set_allocation(self.capacity)
     capacity = property(StorageVolume.get_allocation, set_allocation)