Public bug reported: I have been trying to work with lxc to make use of my uml image. My config is as follows:
12:21:05 rrs@champaran:~$ cat /var/lib/lxc/test/config lxc.utsname = test lxc.rootfs = /home/rrs/Debian-Wheezy-AMD64-root_fs lxc.rootfs.mount = /tmp/foo lxc.cgroup.cpuset.cpus = 0,1 lxc.cgroup.cpu.shares = 1234 lxc.cgroup.devices.deny = a lxc.cgroup.devices.allow = c 1:3 rw lxc.cgroup.devices.allow = b 8:0 rw #lxc.mount = /etc/fstab.complex lxc.mount.entry = /lib /root/myrootfs/lib none ro,bind 0 0 lxc.cap.drop = sys_module mknod setuid net_raw lxc.cap.drop = mac_override When I try to start the instance, I get the following error: 12:16:04 rrs@champaran:~$ sudo lxc-start -n test lxc-start: cgroup is not mounted lxc-start: failed to setup the cgroups for 'test' lxc-start: failed to setup the container lxc-start: invalid sequence number 1. expected 2 lxc-start: failed to spawn 'test' But as you can see below, cgroup is already mounted. 12:16:49 rrs@champaran:~$ mount /dev/sda6 on / type ext4 (rw,errors=remount-ro,commit=600) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) /dev/sda2 on /boot type ext4 (rw,commit=600) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) cgroups on /sys/fs/cgroup type tmpfs (rw,uid=0,gid=0,mode=0755) gvfs-fuse-daemon on /home/rrs/.cache/gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=rrs) ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: lxc 0.7.5-3ubuntu28 ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6 Uname: Linux 3.2.0-17-generic x86_64 ApportVersion: 1.91-0ubuntu1 Architecture: amd64 Date: Mon Feb 20 12:17:21 2012 SourcePackage: lxc UpgradeStatus: Upgraded to precise on 2012-01-24 (26 days ago) mtime.conffile..etc.default.lxc: 2012-01-25T01:58:25.599609 ** Affects: lxc (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug precise -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/936756 Title: lxc complains about cgroup not available To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/936756/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs