List the available space in all cinder-volume?
Let's say that I have a OpenStack Havana installation with a cinder-scheduler and cinder-volume. As an administrator I want to know how much space I have left for volumes. How can I find out?
Rephrasing the question, can I find out via CLI commands if there is a cinder-volume host in my installation that can hold a 1TB volume?
EDIT: Since @dbaxps mentions that it depends on the backend, I'll be more specific. Assume that the backend is NfsDriver. I want to find out via openstack API / CLI the space cinder can allocate (that would be the sum of the free space on the nfs_shares ).
It depends on what kind of backend you selected for cinder. It may be LVM, GlusterFS and etc....