Comment 3 for bug 1541339

After maxing to 100 ADMIN_NODE_DISK we have enough space for backup (it is close to previous available 17G)
[root@nailgun ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/os-root 9.5G 1.4G 7.7G 16% /
devtmpfs 1.4G 0 1.4G 0% /dev
tmpfs 1.4G 0 1.4G 0% /dev/shm
tmpfs 1.4G 26M 1.4G 2% /run
tmpfs 1.4G 0 1.4G 0% /sys/fs/cgroup
/dev/vda3 197M 108M 90M 55% /boot
/dev/vda2 200M 0 200M 0% /boot/efi
/dev/mapper/os-var 27G 17G 8.2G 68% /var
/dev/mapper/os-varlog 40G 194M 38G 1% /var/log