It appears that different dmraid versions handle specifying a
single dmraid device differently.
dmraid-1.0.0.rc14 uses a partial name only,
such as "isw" or "isw_cjbdddajhi".
dmriad-1.0.0.rc15 uses a full name only,
such as "isw_cjbdddajhi_Vol0".
To maintain compatibility with the broadest range of dmraid versions,
the ability to specify a single dmraid device is being removed.
Some distros appear to display /dev/dm-# device names with
libparted. Since this fails a pattern match with the dmraid
device name, check with udev to see if a pattern match is
possible with the name returned from udevinfo or udevadm info.
For example:
/dev/mapper/isw_cjbdddajhi_Vol0 is the device name
/dev/dm-0 is a symbolic link pointing to the above device name
Curtis Gedak