Here is my "df -h" after mounting an 800M old volume, and the one created on 16.04 4.7M just now
Filesystem Size Used Avail Use% Mounted on udev 3.8G 0 3.8G 0% /dev tmpfs 785M 2.2M 783M 1% /run /dev/sda8 46G 17G 27G 38% / tmpfs 3.9G 26M 3.9G 1% /dev/shm tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/sda9 1.9G 1.2G 571M 68% /opt /dev/sda2 96M 33M 64M 34% /boot/efi /dev/sda11 270G 210G 47G 82% /big tmpfs 785M 44K 785M 1% /run/user/1000 /dev/sda10 4.5G 1.9G 2.4G 45% /work /dev/mapper/proj 803M 278M 468M 38% /proj /dev/mapper/codes 4.7M 60K 4.2M 2% /home/francis/e/codes -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875885 Title: luks cannot create small volumes < 8M To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1875885/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs