Comment 7 for bug 1458532

rally gives both tokens and username/password to OpenStack clients:
https://github.com/openstack/rally/blob/master/rally/osclients.py#L204-L219
If token is expired, openstack client should request a new one using username/password. Rally tests take more then 1h and tokens should be expired. It's normal behavior.

As we can see nova requests and uses new tokens correctly:
http://paste.openstack.org/show/237893/
But there is known issue with cinder:
https://bugs.launchpad.net/cinder/+bug/1298135

So, we need to fix cinder and check another OpenStack services. All of them should request new tokens if get 401.