I've been trying to capture a log of the failure when running lxc-attach and it seems to cause just enough delay to get by the race. Also, it does not always occur, but more time than not, the error happens leading more credence to this being a race. I've attached the config I use for the container.
** Attachment added: "config" https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1452451/+attachment/4393645/+files/config -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1452451 Title: failed to change apparmor profile to lxc-container-default-with- nesting Status in lxc package in Ubuntu: Incomplete Bug description: I develop and maintain the unity8-lxc package (lp:unity8-preview-lxc) which uses an unpacked Ubuntu Next Desktop ISO as a privileged rootfs. It uses the lxc-container-default-with-nesting apparmor profile since we'd like to support containers within this. When I try to do a lxc-start. lxc-wait(RUNNING), and lxc-attach for the first time in my setup script, I get the following error: lxc_container: lsm/apparmor.c: apparmor_process_label_set: 183 No such file or directory - failed to change apparmor profile to lxc- container-default-with-nesting I believe this is a race because if I introduce a sleep of say 0.5 seconds between the lxc-wait and lxc-attach, then it works. It also works for any subsequent lxc-start/lxc-wait/lxc-attach after this failure. Please let me know if I can provide more info. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: lxc 1.1.2-0ubuntu3 ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3 Uname: Linux 3.19.0-16-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Wed May 6 16:47:14 2015 InstallationDate: Installed on 2013-03-18 (779 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) SourcePackage: lxc UpgradeStatus: Upgraded to vivid on 2014-10-20 (198 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1452451/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp