forked from rook/rook
Linear raid can be created using `mdadm --create --level=linear`, By creating a linear raid disk on top of a logical volume, we can pass the linear device to `ceph-volume lvm batch --prepare` to provision a new OSD on top of the logical volume since `ceph-volume` does not take lv as the data device. Signed-off-by: Ash Wu <hSATAC@gmail.com>