Filesystem Type Size Used Avail Use% Mounted on tmpfs tmpfs 7.7G 92K 7.7G 1% /etc/timezone /dev/mapper/XXXXXXXX btrfs 138G 12G 125G 9% /usr tmpfs tmpfs 7.7G 0 7.7G 0% /usr/lib/x86_64-linux-gnu/GL tmpfs tmpfs 7.7G 0 7.7G 0% /usr/share/runtime/lib/plugins /dev/mapper/XXXXXXXX btrfs 40G 6.6G 33G 17% /mnt tmpfs tmpfs 1.6G 8.5M 1.6G 1% /run/host/monitor devtmpfs devtmpfs 10M 0 10M 0% /dev tmpfs tmpfs 7.7G 0 7.7G 0% /dev/shm tmpfs tmpfs 7.7G 0 7.7G 0% /home/XXXXXXXXXXXXXXXXXXXXXXXXXX tmpfs tmpfs 7.7G 0 7.7G 0% /home/XXXXXXXXXXXXXX tmpfs tmpfs 7.7G 1.4M 7.7G 1% /run/media cgroup_root tmpfs 10M 0 10M 0% /sys/fs/cgroup /dev/mapper/XXXXXXX btrfs 40G 3.4G 36G 9% /var/log tmpfs tmpfs 7.7G 0 7.7G 0% /tmp/.X11-unix