The glance command can be used to manage images. If the image is already available in the desired format, get an image
# cd /data
# wget http://cloud.fedoraproject.org/fedora-19.x86_64.qcow2
Upload it to Glance.
# source /root/keystonerc_admin
# glance image-create --name "fedora-19" --disk-format qcow2 --container-format bare --file /data/fedora-19.x86_64.qcow2
# glance image-list
+--------------------------------------+-----------+-------------+------------------+-----------+--------+
| ID | Name | Disk Format | Container Format | Size | Status |
+--------------------------------------+-----------+-------------+------------------+-----------+--------+
| 8badaf16-7fa0-44ae-97ce-807d2aa50892 | fedora-19 | qcow2 | bare | 239534080 | active |
+--------------------------------------+-----------+-------------+------------------+-----------+--------+
If the system image is stored at a remote location, --location can be used to provide the URL directly without first downloading the system image. The --copy-from option is similar to the --location option, but will also populate the image in the Glance cache.
By default, images are stored in /var/lib/glance/images/ of the node where glance service is running. Check out /etc/glance/glance-api.conf to see what format is being used.
# cat /etc/glance/glance-api.conf
...
[glance_store]
stores=file,http
default_store=file
filesystem_store_datadir=/var/lib/glance/images/
...