Hello,
booting unprivileged ubuntu trusty and vivid container I get the
following messaged when shutting them down:
umount: /dev/zero: block devices are not permitted on filesystem
umount: /dev/urandom: block devices are not permitted on filesystem
umount: /dev/tty: block devices are not permitted on filesystem
umount: /dev/random: block devices are not permitted on filesystem
umount: /dev/null: block devices are not permitted on filesystem
umount: /dev/full: block devices are not permitted on filesystem
umount: /dev/console: block devices are not permitted on filesystem
that goes for basically all device bind-mounts:
umount: /dev/fb0: block devices are not permitted on filesystem
umount: /dev/video0: block devices are not permitted on filesystem
umount: /dev/dri: block devices are not permitted on filesystem
umount: /dev/snd: block devices are not permitted on filesystem
umount: /dev/zero: block devices are not permitted on filesystem
umount: /dev/urandom: block devices are not permitted on filesystem
umount: /dev/tty: block devices are not permitted on filesystem
umount: /dev/random: block devices are not permitted on filesystem
umount: /dev/null: block devices are not permitted on filesystem
umount: /dev/full: block devices are not permitted on filesystem
umount: /dev/console: block devices are not permitted on filesystem
Can someone explain this?
Best,
Christian
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