LVM Support for 2-way Mirror RAID10
LVM is now capable of creating, removing, and resizing RAID10 logical volumes. To create a RAID10 logical volume, like the other RAID types, specify the segment type as follows:
~]# lvcreate --type raid10 -m 1 -i 2 -L 1G -n lv vg
Note that the -m and -i arguments behave in the same way they would for other segment types. That is, -i is the total number of stripes while -m is the number of (additional) copies (that is, -m 1 -i 2 gives 2 stripes on top of 2-way mirrors).