Comment 5 for bug 1544818

> We need to change an image format from ISO to ext2 with 4k blocks and switch to data source ConfigDrive with disk label == 'config-2' (see [1])

that's it. We're using NoCloud data source right now it will not allow us to use any other FS with 4k blocks. (vfat isn't an option)

so, in order to fix, we need to modify do_configdrive action in manager.py https://github.com/openstack/fuel-agent/blob/57539aed3192969e884acb7cbba9952a291052c3/fuel_agent/manager.py#L343-L365

so, it will be producing ext2 image instead of iso. http://cloudinit.readthedocs.org/en/latest/topics/datasources.html#version-2