[dm-devel] Help ! : device-mapper: reload ioctl failed: Invalid argument

[Sethuraman Subbiah <ssubbia2 ncsu edu>]

Hi , 

This is Sethuraman Subbiah , a student at NCState. I installed DM-IOBAND. I needed that for a project. 

I downloaded a kernel module binary and used insmod to insert the module. It worked and i did modprobe. 

When I gave dmsetup targets | grep ioband 
I got ioband    v1.14.0

It was fine till that step. 

When I try to associate /dev/sda3 with ioband1 : 

echo "0 $(blockdev --getsize /dev/sda3) ioband /dev/sda3 1 0 0 none weight 0 :40" | dmsetup create ioband1

I keep getting this error : 
device-mapper: reload ioctl failed: Invalid argument
Command failed


Can someone help me out ? Thanks !

-
Regards,
Sethuraman Subbiah

Graduate Student - NC state University
M.S in Computer Science