diff --git a/tox.ini b/tox.ini
index 199ee38575ae..b863680fcc1c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -36,8 +36,11 @@ commands = bash tools/lintstack.sh
 # tests conflict with coverage.
 setenv = VIRTUAL_ENV={envdir}
 commands =
- python setup.py testr --coverage \
- --testr-args='^(?!.*test.*coverage).*$'
+ coverage erase
+ python -m nova.openstack.common.lockutils python setup.py testr --coverage \
+ --testr-args='(?=.*{posargs})^(?!.*test.*coverage).*$'
+ coverage combine
+ coverage html --include='nova/*' --omit='nova/openstack/common/*' -d covhtml -i
 
 [testenv:venv]
 commands = {posargs}
</div><div class="naked_ctrl">
<form action="/index.cgi/larger-text" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://opendev.org/openstack/nova/commit/e9b5acf5d4ae825c2d6570955d21c4b6f4316b14.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://opendev.org/openstack/nova/commit/e9b5acf5d4ae825c2d6570955d21c4b6f4316b14.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast">配色反転</option>
<option value="larger-text" selected="selected">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>