btrfs-progs-0.20.rc1.20131114git9f0c53f-1.fc20 incorporates 16KB leafsize/nodesize by
default, which significantly reduces metadata fragmentation and improves performance.
Since this is set at the time the file system is created, it would be nice to get this in
before freeze. Since it's the new default, it's considered safe.
There is one minor regression found, which is 'btrfs filesystem show' reports
duplicate volumes. A fix is committed upstream already and a post-install update will fix
this.
https://admin.fedoraproject.org/updates/FEDORA-2013-21474/btrfs-progs-0.2...
Chris Murphy