I've now confirmed that root:root on the mount point works. The Perl
IO::Tty module had to be rebuilt against the glibc without pt_chown()
before it would work and that confused the issue.
Sorry for the noise...
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Server Tea
Rebuilding IO::Tty on a system which lacks grantpt() and pt_chown()
fixed the problem with the script not being able to create a pty.
So the only remaining piece is to understand why /dev/pts is being
chowned to root:root. Looking at src/lxc/conf.c, I can see where that
directory is being created
Unfortunately, after I submitted this ticket, I discovered that the
patch alone is not sufficient. It turns out that the group ownership of
/dev/pts is also not being set correctly (it is still root:root), which
also prevents users that are members of the tty group from being able to
create ptys.
