diff --git a/os_capacity/commands/commands.py b/os_capacity/commands/commands.py
index 9969c75..84acf52 100644
--- a/os_capacity/commands/commands.py
+++ b/os_capacity/commands/commands.py
@@ -28,7 +28,8 @@ class FlavorList(Lister):
 
     def take_action(self, parsed_args):
         flavors = utils.get_flavors(self.app)
-        return (('UUID', 'Name', 'VCPUs', 'RAM MB', 'DISK GB'), flavors)
+        return (('UUID', 'Name', 'VCPUs', 'RAM MB', 'DISK GB', 'Extra Specs'),
+                flavors)
 
 
 class ListResourcesAll(Lister):
diff --git a/os_capacity/data/flavors.py b/os_capacity/data/flavors.py
index 6e45b6f..6d5f69a 100644
--- a/os_capacity/data/flavors.py
+++ b/os_capacity/data/flavors.py
@@ -16,12 +16,18 @@
 
 
 Flavor = collections.namedtuple(
-    "Flavor", ("id", "name", "vcpus", "ram_mb", "disk_gb"))
+    "Flavor", ("id", "name", "vcpus", "ram_mb", "disk_gb", "extra_specs"))
 
 
-def get_all(compute_client):
-    response = compute_client.get("/flavors/detail").json()
+def get_all(compute_client, include_extra_specs=True):
+    response = compute_client.get('/flavors/detail').json()
     raw_flavors = response['flavors']
-    # TODO(johngarbutt) disk should probably include ephemeral
-    return [Flavor(f['id'], f['name'], f['vcpus'], f['ram'], f['disk'])
+    if include_extra_specs:
+        for flavor in raw_flavors:
+            url = '/flavors/%s/os-extra_specs' % flavor['id']
+            response = compute_client.get(url).json()
+            flavor['extra_specs'] = response['extra_specs']
+    return [Flavor(f['id'], f['name'], f['vcpus'], f['ram'],
+                   (f['disk'] + f['OS-FLV-EXT-DATA:ephemeral']),
+                   f.get('extra_specs'))
             for f in raw_flavors]
diff --git a/os_capacity/utils.py b/os_capacity/utils.py
index 52187f5..94bfe65 100644
--- a/os_capacity/utils.py
+++ b/os_capacity/utils.py
@@ -24,8 +24,7 @@
 
 def get_flavors(app):
     app.LOG.debug("Getting flavors")
-    raw_flavors = flavors.get_all(app.compute_client)
-    return [(f.id, f.name, f.vcpus, f.ram_mb, f.disk_gb) for f in raw_flavors]
+    return flavors.get_all(app.compute_client, include_extra_specs=True)
 
 
 def get_providers_with_resources_and_servers(app):
@@ -54,7 +53,13 @@ def group_providers_by_type_with_capacity(app):
     all_flavors = flavors.get_all(app.compute_client)
     grouped_flavors = collections.defaultdict(list)
     for flavor in all_flavors:
-        key = (flavor.vcpus, flavor.ram_mb, flavor.disk_gb)
+        custom_rc = None
+        for extra_spec in flavor.extra_specs:
+            if extra_spec.startswith('resources:CUSTOM'):
+                custom_rc = extra_spec.replace('resources:', '')
+                break  # Assuming a good Ironic setup here
+
+        key = (flavor.vcpus, flavor.ram_mb, flavor.disk_gb, custom_rc)
         grouped_flavors[key] += [flavor.name]
 
     all_resource_providers = resource_provider.get_all(app.placement_client)
@@ -69,6 +74,7 @@ def group_providers_by_type_with_capacity(app):
         vcpus = 0
         ram_mb = 0
         disk_gb = 0
+        custom_rc = None
         for inventory in inventories:
             if "VCPU" in inventory.resource_class:
                 vcpus += inventory.total
@@ -76,7 +82,9 @@ def group_providers_by_type_with_capacity(app):
                 ram_mb += inventory.total
             if "DISK" in inventory.resource_class:
                 disk_gb += inventory.total
-        key = (vcpus, ram_mb, disk_gb)
+            if inventory.resource_class.startswith('CUSTOM_'):
+                custom_rc = inventory.resource_class  # Ironic specific
+        key = (vcpus, ram_mb, disk_gb, custom_rc)
 
         inventory_counts[key] += 1
 
@@ -86,8 +94,9 @@ def group_providers_by_type_with_capacity(app):
             allocation_counts[key] += 1
 
     for key, inventory_count in inventory_counts.items():
-        resources = "VCPU:%s,MEMORY_MB:%s,DISK_GB:%s" % key
+        resources = "VCPU:%s,MEMORY_MB:%s,DISK_GB:%s,%s" % key
         matching_flavors = grouped_flavors[key]
+        matching_flavors.sort()
         matching_flavors = ", ".join(matching_flavors)
         total = inventory_count
         used = allocation_counts[key]