Setting up SSD as a cache for slow cloud volumes

setup_bcache.sh

#!/usr/bin/env bash
lsblk
apt-get install -y lvm2 mdadm bcache-tools

# Create a linux raid autodetect primary partition
# use the following keystrokes: np1tfdw
fdisk /dev/sdc
fdisk /dev/sdd

# setup raid
mdadm --create /dev/md127 --level 0 --raid-devices 2 /dev/sdc1 /dev/sdd1

# setup LVM: optional, you can replace /dev/vg0/lv0 with /dev/md127 below
pvcreate /dev/md127
vgcreate vg0 /dev/md127
lvcreate -l 90%FREE -n  lv0 vg0

# This is the default SSD attached on DS2 VMs
umount /dev/sdb
# Zero out existing partitions
dd if=/dev/zero of=/dev/sdb bs=512 count=100
dd if=/dev/zero of=/dev/vg0/lv0 bs=512 count=100

# init bache
make-bcache -C /dev/sdb  -B /dev/vg0/lv0

#create FS
mkfs -t ext4 /dev/bcache0