Comment # 3 on bug 907393 from Antoine Saroufim

Here's my hardware information:
https://dl.dropboxusercontent.com/u/44544435/Hardware%20Info

I've got two hard disks with 2 partitions on each. My /home partition is on one
of them and it uses BtrFS. My system is on a partition on the other hard disk
and it also uses BtrFS. The second partition on the system's hard drive uses
ext4 and it mounts as /storage. It's about 600 GiB and it mainly contains
media. The fourth partition is not mounted at boot and is empty. 
The /home disk drive is an HDD with 1 TB capacity and the other is also an HDD
with 750GiB capacity.