The problem was that I installed Nova from trunk but used instructions for Cactus, which does not use Glance at all. I installed at the time when trunk still allowed running Nova without glance and using only the local storage, but when I updated to a version after Glance become mandatory, everything broke down.
I will close this bug, since it was a problem with the installation instructions (for which I have entered a bug that has since been fixed), not Nova itself.
The problem was that I installed Nova from trunk but used instructions for Cactus, which does not use Glance at all. I installed at the time when trunk still allowed running Nova without glance and using only the local storage, but when I updated to a version after Glance become mandatory, everything broke down.
I will close this bug, since it was a problem with the installation instructions (for which I have entered a bug that has since been fixed), not Nova itself.