Trying to use a chrooted system via
mount -B stage3 gentoo mount -t sysfs none gentoo/sys mount -t proc none gentoo/proc mount -R /dev gentoo/dev mount --make-rslave gentoo/dev unshare --fork chroot gentoo umount -R gentoo
After the last umount, dev, dev/pts, dev/shm, dev/mqueue, dev/hugepages were still mounted under stage3.
I have two questions,
- Why they were mounted to stage3?
- How could I unmount those? Every mountpoint is busy.
OS: Ubuntu Xenial. Kernel: 4.13.4, but I have got same issue with kernel like 4.10 and others.