@@ -130,6 +130,8 @@ function configure_tempest {

     local available_flavors

     local flavors_ref

     local flavor_lines

+    local flavor_ref_size

+    local flavor_ref_alt_size

     local public_network_id

     local public_router_id

     local ssh_connect_method="floating"

@@ -233,11 +235,24 @@ function configure_tempest {

             fi

             flavor_ref=${flavors[0]}

             flavor_ref_alt=$flavor_ref

+            flavor_ref_size=$(openstack flavor show --format value --column disk "${flavor_ref}")

             # Ensure ``flavor_ref`` and ``flavor_ref_alt`` have different values.

             # Some resize instance in tempest tests depends on this.

             for f in ${flavors[@]:1}; do

                 if [[ "$f" != "$flavor_ref" ]]; then

+                    #

+                    # NOTE(sdatko): Resize is only possible when target flavor

+                    #               is not smaller than the original one. For

+                    #               Tempest tests, in case there was a bigger

+                    #               flavor selected as default, e.g. m1.small,

+                    #               we need to perform additional check.

+                    #

+                    flavor_ref_alt_size=$(openstack flavor show --format value --column disk "${f}")

+                    if [[ "${flavor_ref_alt_size}" -lt "${flavor_ref_size}" ]]; then

+                        continue

+                    fi

+

                     flavor_ref_alt=$f

                     break

                 fi