Hi, On wto, lip 14, 2009 at 09:47:44 -0700, Sukadev Bhattiprolu wrote: > I don't have any beyond what is in the lxc-source examples. Maybe > Daniel Lezcano has some. Just asking :) > |BTW, where's the canonical source for ns_exec? > > It is here: git://git.sr71.net/~hallyn/cr_tests.git Thanks a lot. > So I guess this is the first time we are trying this scenario out (i.e. > it may not be a regression so we can't necessarily use git-bisect). > > I am not too familiar with libvirt implementation, but do you think it > is possible to repro this using ns_exec and fewer/minimal namespaces ? I didn't try that, but regarding devpts the libvirt code does basically: unshare(CLONE_NS) mount --make-slave / mount devpts /dev/pts -t devpts clone(all the namespace options including CLONE_NEWNS) child: mount --move /the/above/dev/pts /dev/pts set up everything else As the point of the bug is opening a pts when its other end is already gone, I'm not sure we have to even do anything in the parent (maybe open/close the ptm). Will have a look today. > We should be able to get a cross-namespace pty using ns_exec, but am not > sure the set of namespaces need to be cloned - would it be sufficient if > we clone pid and mount namespaces and remount /dev/pts in child container ? As my testcase doesn't know nor care about its pid, quite possibly we would only need mount namespaces. Best regards, Grzegorz Nosek _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
