last_resort groups prioritized by iallocator plugin

Also change language slightly for preferred groups to look better now
that it's repeated.

Signed-off-by: Stephen Shirley <diamond@google.com>
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

diff --git a/doc/design-2.3.rst b/doc/design-2.3.rst
index 31fd3cc..e96b359 100644 (file)
--- a/doc/design-2.3.rst
+++ b/doc/design-2.3.rst
@@ -77,12 +77,13 @@ The ``alloc_policy`` attribute can have the following values:
 
 - last_resort: the node group should not be used for instance
   allocations, unless this would be the only way to have the operation
-  succeed.
+  succeed. Prioritization among groups in this state will be deferred to
+  the iallocator plugin that's being used.
 
 - preferred: the node group can be used freely for allocation of
   instances (this is the default state for newly created node
-  groups). Note that prioritization among groups in this state will be
-  deferred to the  iallocator plugin that's being used.
+  groups). Prioritization among groups in this state will be deferred to
+  the iallocator plugin that's being used.
 
 Node group operations
 +++++++++++++++++++++