I figured out what's happening. lxc sets up /dev/kmsg as a symlink to
/dev/console, init fopens kmsg, and suddenly it owns the console. Not
sure whether the fix is to handle kmsg differently or special-case it in
upstart to be opened with O_NOCTTY. I'll leave it to Serge and James to
figure that out, and in the meantime I'll attend to the kernel patch.
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) => Seth Forshee (sforshee)
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https://bugs.launchpad.net/bugs/1263738
Title:
login console 0 in user namespace container is not configured right
Status in Upstart:
New
Status in “linux” package in Ubuntu:
Confirmed
Status in “lxc” package in Ubuntu:
Triaged
Status in “linux” source package in Trusty:
Confirmed
Status in “lxc” source package in Trusty:
Triaged
Bug description:
When you create a container in a private user namespace, when you start the
container without the '-d' flag, that console is not properly set up.
Logging in
gives you
-bash: no job control in this shell
and hitting ctrl-c reboots the container.
Consoles from 'lxc-console -n $container' behave correctly.
This may be a kernel issue, as discussed here:
http://lists.linuxcontainers.org/pipermail/lxc-
devel/2013-October/005843.html
so also marking this as affecting the kernel.
This can be worked around, but really needs to be fixed before trusty
is frozen.
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