# dmraid -ay -v
/dev/sdc: "pdc" and "nvidia" formats discovered (using nvidia)!
/dev/sdb: "pdc" and "nvidia" formats discovered (using nvidia)!
RAID set "nvidia_ifacefaa" already active
INFO: Activating stripe raid set "nvidia_ifacefaa"

# ls /dev/mapper/
control  nvidia_ifacefaa