Root partition only 15GB how to utilize the rest?

John Fine john2fx
Since sda3 is LVM you should think about how to manage logical volumes.
Tools such as /usr/sbin/vgdisplay, /usr/sbin/lvdisplay and several of the other /usr/sbin/lv* commands will assist, along with using the man pages for those commands.
In particular, the /usr/sbin/lvextend command along with its ‘-r’ option may assist.

Thanks alot that was exactly what i needed i used

sudo lvextend -L221G /dev/mapper_fedora_fedora-root --resizefs

Works like a charm.