why redundant command for resizing logical volumes in LVM2?

[Paul Howarth]

Robert P. J. Day wrote:
>   i'm sure there's a simple answer to this, but is there any
> compelling reason why there are three different commands in LVM2 for
> resizing a logical volume?
> 
>   lvreduce		# make smaller
>   lvextend		# make larger
>   lvresize		# resize
> 
> is there some pretty obvious redundancy here, or am i misreading the
> man pages?

All of the lvm2 commands are symlinks to a single binary. See:

$ ls -l /usr/sbin/lv*

Having several different commands allows for simpler, easier to remember 
commands for doing common tasks rather than having to remember one command 
with lots of complex options.

Paul.