Device-mapper RAID tool and library. It is provided by lots of distro such as RHEL and Ubuntu. There are some weird line endings in this patch, so please cherry-pick it from https://github.com/bendaaron/meta-oe-dev/commit/bcf7dd2b46ec4948b5d03945d13909302cce99bc Signed-off-by: Bian Naimeng <biannm at cn.fujitsu.com>