lvreduce(8) on Linux
The text 3993adb1357b, as Debian 7 (Wheezy) shipped it.
reduce the size of a logical volume
Flags it lists
-
--extents -
--force -
--nofsck -
--noudevsync -
--resizefs -
--size -
-L -
-f -
-l -
-n -
-r