docker-lvm-arch

lvcreate --wipesignatures y -n thinpool arch -L 100G
lvcreate --wipesignatures y -n thinpoolmeta arch -L 1G

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

cat <<EOF | tee /etc/lvm/profile/docker-thinpool.profile
activation {
    thin_pool_autoextend_threshold=80
    thin_pool_autoextend_percent=20
}
EOF

lvchange --metadataprofile docker-thinpool arch/thinpool

cat <<EOF | tee /etc/docker/daemon.json
{
        "storage-driver": "devicemapper",
        "storage-opts": [
                "dm.thinpooldev=/dev/mapper/arch-thinpool",
                "dm.use_deferred_removal=true"
        ]
}
EOF

systemctl start docker