dmsetup info -c --nameprefixes --unquoted --rows --noheadings \
-o name,uuid,suspended,readonly,major,minor,open,tables_loaded
o implement path_id with libudev
dmsetup info -c --nameprefixes --unquoted --rows --noheadings \
-o name,uuid,suspended,readonly,major,minor,open,tables_loaded
o implement path_id with libudev