When you use the kollacli host destroy --includedata command to destroy a node that runs the Glance Image service (usually a controller node), the Glance images are removed from the deployment but they remain on disk in /var/lib/glance/images on the node.

You might want to monitor the /var/lib/glance/images directory. Each image file is named after the ID of the Glance image. Use either the openstack image list or the glance image list command to display a list of image IDs. You can safely remove the image files that are not listed by these commands.

Bug: 22909370