Tiered storage kernel driver for Linux forked from [btier](https://github.com/tsutsu/btier).
Tested on Ubuntu 14.04 with 4.4.0-62-generic kernel.
Features:
 * dkms support
 * load btier.ko at boot time (rebuild initrd after bttab altering is required)
 * debian/ubuntu make packages


MAKE, INSTALL and CONFIGURE
	aptitude install build-essential git dkms debhelper
	cd ~/src
	git clone https://github.com/evgenypim/btier
	cd ./btier/
	make deb
	ls ../btier*.deb #=> ../btier_2.0.1-1_amd64.deb
	dpkg -i ../btier_2.0.1-1_amd64.deb

	# create tier device with ssd (sda) as tier0 and hdd (sdb) as tier1
	modprobe btier
	ls -l /dev/tiercontrol # check if module is loaded
	btier_setup -f /dev/sda:/dev/sdb -c
	ls /dev/sdtier* #=> /dev/sdtiera

	# make tier available for fstab at boot time
	echo "/dev/sda:/dev/sdb" >> /etc/bttab
	update-initramfs -u

	# create filesystem and mount
	mkfs.ext4 /dev/sdtiera
	mkdir /mnt/tier
	mount /dev/sdtiera /mnt/tier
	echo "/dev/sdtiera /mnt/tier ext4 defaults 0 1" >> /etc/fstab

for more information see Documentation/btier.txt