No image handlers specified in the configuration are available for image f46b89c4-e1b4-4300-8ab7-2dad75b1e246

[songqianxia]

When I deploy an instance, nova want to fetch image from glance. and at this time pop the error message:
2014-03-13 02:14:03.034 ERROR root [-] Original exception being dropped: ['Traceback (most recent call last):\n', ' File "/usr/lib/python2.6/site-packages/nova/openstack/common/fileutils.py", line 95, in remove_path_on_error\n yield\n', ' File "/usr/lib/python2.6/site-packages/nova/virt/images.py", line 93, in fetch\n path):\n', ' File "/usr/lib/python2.6/site-packages/nova/virt/imagehandler/__init__.py", line 176, in handle_image\n raise exception.NoImageHandlerAvailable(image_id=image_id)\n', 'NoImageHandlerAvailable: No image handlers specified in the configuration are available for image f46b89c4-e1b4-4300-8ab7-2dad75b1e246.\n']

and I have checked and found the reason.
It is because that nova use load_image_handlers(driver): to get the image handlers
but in file /usr/lib/python2.6/site-packages/nova/virt/imagehandler/__init__.py
def load_image_handlers (driver):
 # for de-duplicate. using ordereddict lib to support both py26 and py27?
    processed_handler_names = []
    ex = stevedore.extension.ExtensionManager('nova.virt.image.handlers')

it use ex = stevedore.extension.ExtensionManager('nova.virt.image.handlers'),
but the path nova.virt.image.handlers does not exist.

[James Bulmer (nekinie)]

Also affects the Arch Linux pkgbuild nova-deb which uses the source http://archive.ubuntu.com/ubuntu/pool/main/n/nova/nova_2014.1~b3.orig.tar.gz