Change from loopdevice to direct-lvm for docker

# Install docker

# Stop docker services and wipe out /var/lib/docker
service docker stop
rm -rf /var/lib/docker

# Create pv, lv. Following uses /dev/sdb1, add more partitions or disks here
pvcreate /dev/sdb1

# Create docker VG using the above created pvs
vgcreate docker /dev/sdb1

# Create lvs for docker
lvcreate --wipesignatures y -n thinpool docker -l 95%VG
lvcreate --wipesignatures y -n thinpoolmeta docker -l 1%VG

lvconvert -y --zero n -c 512K --thinpool docker/thinpool --poolmetadata docker/thinpoolmeta

# Setup automatic pool expansion
cat > /etc/lvm/profile/docker-thinpool.profile <<EOF
activation {
    thin_pool_autoextend_threshold=80
    thin_pool_autoextend_percent=20
}
EOF

# Apply the new profile
lvchange --metadataprofile docker-thinpool docker/thinpool

# Setup other_args for docker to use the new profile
cat > /etc/sysconfig/docker <<EOF
other_args='-d -s devicemapper --storage-opt=dm.basesize=20G --storage-opt=dm.thinpooldev=/dev/mapper/docker-thinpool --storage-opt=dm.use_deferred_removal=true'
EOF

# For CentOS 7.0
cat > /etc/docker/daemon.json <<EOF
{
    "storage-driver": "devicemapper",
    "storage-opts": [
        "dm.thinpooldev=/dev/mapper/docker-thinpool",
        "dm.basesize=30G"
    ]
}
EOF


# Restart docker
service docker start

# For verification
docker info

# Pull our image
docker pull bluedata/centos6

# Launch a node 
docker run -d --name test bluedata/centos6

# exec bash into the container
docker exec -it test /bin/bash

To manually create an LV with stripeing.

$> lvcreate --size 10737418240b  --name test --stripes 3 --stripesize 64 VolBDSCStore