[dm-devel] device-mapper: reload ioctl failed: Device or resource busy

[hxsrmeng <hxsrmeng gmail com>]

Hi, 

Sorry if it is not a good question here.:) 

When I use dmsetup to create a target, I got the following message;

"device-mapper: reload ioctl failed: Device or resource busy"

But the devices are umount-ed. What else may cause this problem?

Thanks a lot.