virsh pool storage basics

How or where were these pools created? Where are configuration files? $ virsh pool-list --all Name State Autostart ------------------------------------------- default active yes Downloads active yes $ virsh pool-info Downloads Name: Downloads UUID: fdbe7407-67c4-405d-8e46-9c2695a8b353 State: running Persistent: yes Autostart: yes Capacity: 219.88 GiB Allocation: 34.87 GiB Available: 185.01 GiB $ virsh pool-info default Name: default UUID: cb72b02e-b436-4ec9-9460-d297744c4c69 State: running Persistent: yes Autostart: yes Capacity: 219.88 GiB Allocation: 34.95 GiB Available: 184.93 GiB I believe that the pools were created by the virt-manager GUI. Is there free space on default? I think that the Downloads pool is probably superfluous.