Re: [CentOS] Problem unmounting loop device

On Wed, 2005-07-13 at 15:33 -0500, Matt Lawrence wrote:

I'm attempting to build a virtual disk image for qemu of CentOS4 on CentOS4. I'm having a problem after using yum --installroot to put a minimal filesystem on a partition located within the virtual disk. When I go to unmount it, I get "device is busy" errors. I know that I haven't left anything using that filesystem and lsof doesn't show anything, so I'm wondering if there is some sort of odd problem with the loop device. So far, I haven't been able to find anything applicable using google. Any ideas?

-- Matt

use the command:

fuser -m /path/to/mountpoint

it will tell you if any processes are using that location