[dm-devel] dm-ioband = smarter than me

[malahal at us.ibm.com]

Clint Moore [clint at blueboxgrp.com] wrote:
>
> 	I'm missing something and I'm not quite sure what it is.
>
> Here's what I have:
>
> [root@ test 2.6.24]# df -k
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/sda3            234414076   4047692 218266628   2% /
> ...
> [root at test 2.6.24]# dmsetup targets
> ioband           v0.0.3
> ...
> [root@ test 2.6.24]# echo "0 $(blockdev --getsize /dev/sda3) ioband 
> /dev/sda3 1" | dmsetup create ioband1
> device-mapper: reload ioctl failed: Invalid argument
> Command failed

Don't you need to unmount first?