From Fedora Project Wiki

Blivet-gui is a graphical tool for storage management that uses Blivet library. It provides an easy way to create, modify or delete various storage devices. Currently available features includes LVM storage management (including support for LVM cache, LVM RAID or Thin LVM), Btrfs (including support for Btrfs RAID, subvolumes and snapshots), MD RAID, encrypted devices using LUKS and of course support for managing standard disk partitions and filesystems.

Available in Fedora repositories since Fedora 21.