diff --git a/manila/post_test_hook.sh b/manila/post_test_hook.sh
index 0ff30e7..fc9c61a 100755
--- a/manila/post_test_hook.sh
+++ b/manila/post_test_hook.sh
@@ -57,6 +57,8 @@ else
     case "$GLUSTERFS_MANILA_DRIVER_TYPE" in
     glusterfs|glusterfs-nfs)
         local BACKEND_NAME="GLUSTERFS"
+        RUN_MANILA_EXTEND_TESTS=True
+        RUN_MANILA_SHRINK_TESTS=True
         ;;
     glusterfs-heketi|glusterfs-nfs-heketi)
         local BACKEND_NAME="GLUSTERFSHEKETI"