gluster volume quota <volumename> list
gluster peer status
gluster volume status
gluster volume list
gluster volume heal <volumename> info
gluster volume info

gluster volume heal www info
umount /var/www                      # on all nodes
gluster volume stop www              # on one node
systemctl stop glusterd.service      # on all nodes
ps aux | grep gluster                # on all nodes
systemctl disable glusterd.service   # optional on all nodes