diff --git a/nova/tests/unit/virt/hyperv/test_hostops.py b/nova/tests/unit/virt/hyperv/test_hostops.py
index 378d252594b6..73bb5d8955fe 100644
--- a/nova/tests/unit/virt/hyperv/test_hostops.py
+++ b/nova/tests/unit/virt/hyperv/test_hostops.py
@@ -197,6 +197,7 @@ class HostOpsTestCase(test_base.HyperVBaseTestCase):
                     'memory_mb_used': mock.sentinel.MEMORY_MB_USED,
                     'local_gb': mock.sentinel.LOCAL_GB,
                     'local_gb_used': mock.sentinel.LOCAL_GB_USED,
+                    'disk_available_least': mock.sentinel.LOCAL_GB_FREE,
                     'vcpus': self.FAKE_NUM_CPUS,
                     'vcpus_used': 0,
                     'hypervisor_type': 'hyperv',
diff --git a/nova/virt/hyperv/hostops.py b/nova/virt/hyperv/hostops.py
index ca5fe19a3e1c..0ab1c05a7b0a 100644
--- a/nova/virt/hyperv/hostops.py
+++ b/nova/virt/hyperv/hostops.py
@@ -158,11 +158,17 @@ class HostOps(object):
                  cpu_topology['cores'] *
                  cpu_topology['threads'])
 
+        # NOTE(claudiub): free_hdd_gb only refers to the currently free
+        # physical storage, it doesn't take into consideration the virtual
+        # sizes of the VMs' dynamic disks. This means that the VMs' disks can
+        # expand beyond the free_hdd_gb's value, and instances will still be
+        # scheduled to this compute node.
         dic = {'vcpus': vcpus,
                'memory_mb': total_mem_mb,
                'memory_mb_used': used_mem_mb,
                'local_gb': total_hdd_gb,
                'local_gb_used': used_hdd_gb,
+               'disk_available_least': free_hdd_gb,
                'hypervisor_type': "hyperv",
                'hypervisor_version': self._get_hypervisor_version(),
                'hypervisor_hostname': platform.node(),