## 
## fresh vivid instance , recreating the fun I'm having in bug  1427264
## http://pad.lv/1427264

## ssh in as ubuntu with your ssh keys
sudo apt-get install ubuntu-dev-tools sbuild schroot debootstrap haveged ecryptfs-utils

# add sbuild group, as it is used, and this way we can add ebar to it before running mk-sbuild
# see bug LP: #1328689 for why 'keyctl'

sudo addgroup sbuild

sudo keyctl link @u @s
sudo adduser --encrypt-home ebar
sudo keyctl unlink @u @s
## follow the prompts here. I suggest a password of 'cubswin:)'

sudo adduser ebar sudo
sudo adduser ebar sbuild

## enable ssh password auth
sudo sed -i 'm/PasswordAuthentication no/s,no,yes,' /etc/ssh/sshd_config
sudo service ssh restart


# now come in as 'ebar' using password.
rel=trusty ; arch=amd64;
mk-sbuild --eatmydata --arch=$arch $rel 2>&1 | tee /tmp/schroot-$rel-$arch.log

$ cd /tmp
$ name=$(schroot --chroot=chroot:trusty-amd64 --begin-session)
$ schroot --chroot=$name --run-session cat /proc/mounts
trusty-amd64 / overlayfs rw,relatime,lowerdir=/var/lib/schroot/union/underlay/trusty-amd64-f267f6d3-7b0e-4b54-b262-3e0519ffdad1,upperdir=/var/lib/schroot/union/overlay/trusty-amd64-f267f6d3-7b0e-4b54-b262-3e0519ffdad1,workdir=/var/lib/schroot/union/overlay/trusty-amd64-f267f6d3-7b0e-4b54-b262-3e0519ffdad1_work 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/dev/disk/by-uuid/a5b58c9e-b67a-4a12-8c89-7a87bb80ad49 /build ext4 rw,relatime,data=ordered 0 0
$ df
Filesystem     1K-blocks    Used Available Use% Mounted on
udev             1010012       0   1010012   0% /dev
tmpfs             204920    4616    200304   3% /run
/dev/vda1       20342140 1907228  18418528  10% /
tmpfs            1024584       4   1024580   1% /dev/shm
tmpfs               5120       0      5120   0% /run/lock
tmpfs            1024584       0   1024584   0% /sys/fs/cgroup
/dev/vdb        41153856   49164  39007540   1% /mnt
tmpfs             204920       0    204920   0% /run/user/1001
trusty-amd64    20342140 1907228  18418528  10% /var/lib/schroot/mount/trusty-amd64-f267f6d3-7b0e-4b54-b262-3e0519ffdad1
$ ls /home/ebar/
Access-Your-Private-Data.desktop  README.txt

## clean up just for fun
schroot --chroot=$name --end-session