I’ve been playing around more with Linux Containers after my
post about init scripts
and I start to think they are quite near being working for Gentoo. I
hope once I come back from my vacations to get them in the tree
together with Tiziano.
Right now the problems we have are:
- the standard stage3 needs to be heavily tweaked or it’ll be a
massacre when started;
- if
I do set ttys in the configuration, at start time it moves me to the
real tty1, which causes a domino effect with X11 that is annoying,
although not critical;
- OpenRC needs to be tweaked to add
support for Linux-Containers; there are quite a few things that could
be eased up by having a working OpenRC that ignores some init scripts
when running in containers; the code seems to be in
src/librc/librc.c
(look for openvz) and should be easy to check whether we’re running on
containers, by checking the running cgroup (/proc/self/cgroup);
- the current ebuild in Tiziano’s overlay creates a
/var/lib/lib
directory and installs the lxc- binaries in /usr/bin,
both of which shouldn’t happen in Gentoo once installed;
- running
rc shutdown
inside the container will stop all the services properly, but will not
kill init and thus not kill the vserver, I’m not sure why; running kill
1
also seems not to work, I have yet to check whether sending the kill
signal from outside will properly shut down the rc inside, if yes, then
it’ll be a good way to shut down the container.
Once I’ll be back and I’ll be working on the init scripts, they’ll
be in a separate package, kinda like mysql’s, since what I have for now
is slightly more complex, will add a few more standard locations (for
instance they’ll use a /var/log/lxc directory that is not
part of the standard install of lxc) and will require a couple of
packages that are not part of lxc.
