[systemd-devel] Shared root fs by default

[Tvrtko Ursulin]

Hi all,

As a bit of a feedback, the change in systemd to mark root fs as recursively 
shared by default has the potential to bite hard anyone who builds chroot-ed 
environments on their system.

When you build your chroot fs and then bind mount bits of the outside world 
into it, you are up for a nasty surprise when you tear those mounts down. You 
will then find your original mount points gone and system potentially in a 
seriously broken state.

Depending what bits from the outside have been bind mounted into chroot and 
your filesystem setup you can lose /home, /dev, /proc, etc. You get the 
picture. :/


Regards,

Tvrtko