1 mkfcmap  -source
2  src_vdisk_id 
2  src_vdisk_name 
3  -target
4  target_vdisk_id 
4  target_vdisk_name 
5?  -name new_name_arg
6?  -consistgrp 
6.1  consist_group_id 
6.1  consist_group_name 
7?  -copyrate rate
8?  -autodelete
9?  -grainsize 
9.1 64
9.1 256
10?  -incremental
11?  -cleanrate
11.1 rate
12?  -iogrp
12.1  iogroup_name 
12.1  iogroup_id 
13?  -keeptarget