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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - PrivateTmp works incorrectly with `mount --make-rprivate /`"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70856#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - PrivateTmp works incorrectly with `mount --make-rprivate /`"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70856">bug 70856</a>
from <span class="vcard"><a class="email" href="mailto:s.seletskiy@gmail.com" title="Stanislav <s.seletskiy@gmail.com>"> <span class="fn">Stanislav</span></a>
</span></b>
<pre>However, `mount --make-rprivate /` is needed to get LXC containers to work.
I mean that if service is not using `PrivateTmp` option, then any unmounts are
propagated to the processes running inside service. Even if `mount
--make-rprivate /` was issued before.
So, problem arises ONLY if PrivateTmp and make-rprivate using together.
Please, take a careful look on scenario I attached at first comment.
Unmounts are propagated:
# mount --make-rprivate /
# mount blahblah /mnt
# systemctl start ntpd (without PrivateTmp option in ntpd.service)
# umount /mnt
Unmounts are NOT propagated and unmounting /mnt CAUSES A PROBLEM:
# mount --make-rprivate /
# mount blahblah /mnt
# systemctl start ntpd (WITH PrivateTmp option in ntpd.service, which is
default)
# umount /mnt
Hope it is clear enough...</pre>
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