On 03/07/2018 04:48 AM, Leon Fauster wrote: > OS: EL6 - sometimes I use > > kpartx -a /mnt/.../lvdisk.img > > to map the partitions and mount them via > > /dev/mapper/loop0pX > > After using the disk (unmounting it) I noticed that > detaching such mapping via kpartx -d does not result > in freeing up the loop devices. Results: System reboots > shows that the filesystem where lvdisk.img is located > can't be unmounted. > > lsof, fuser, ps does not show any usage. Even removing the > device node via > > dmsetup remove /dev/mapper/loop0pX > > does not help. Trying to unmount the underlying filesystem > still shows /mnt: device is busy. > > Any other suggestions would be greatly appreciated! Do you have an open shell/terminal session hanging out in the /mnt directory you used? -- Jim Perrin The CentOS Project | http://www.centos.org twitter: @BitIntegrity | GPG Key: FA09AD77