Interesting. I removed the /sys/kernel/debug mount and containers seem to start up just fine:
c@mawhrin-skel:~$ grep kernel/debug /usr/share/lxc/config/ubuntu.common.conf # lxc.mount.entry = /sys/kernel/debug sys/kernel/debug none bind,optional 0 0 c@mawhrin-skel:~$ lxc launch ubuntu-trusty t2 Creating t2 Starting t2 c@mawhrin-skel:~$ lxc exec t2 -- ps -ef UID PID PPID C STIME TTY TIME CMD root 1 0 4 19:02 ? 00:00:00 /sbin/init root 453 1 0 19:02 ? 00:00:00 upstart-socket-bridge --daemon root 1507 1 0 19:02 ? 00:00:00 upstart-udev-bridge --daemon root 1513 1 0 19:02 ? 00:00:00 /lib/systemd/systemd-udevd --dae root 1583 1 0 19:02 ? 00:00:00 dhclient -1 -v -pf /run/dhclient root 1606 1 0 19:02 ? 00:00:00 /bin/sh /etc/network/if-up.d/ntp root 1610 1606 0 19:02 ? 00:00:00 lockfile-touch /var/lock/ntpdate root 1619 1606 0 19:02 ? 00:00:00 /usr/sbin/ntpdate -s ntp.ubuntu. root 1772 1 0 19:02 ? 00:00:00 /bin/sh /etc/network/if-up.d/ntp message+ 1773 1 0 19:02 ? 00:00:00 dbus-daemon --system --fork root 1775 1772 0 19:02 ? 00:00:00 lockfile-create /var/lock/ntpdat root 1812 1 0 19:02 ? 00:00:00 /lib/systemd/systemd-logind root 1864 1 0 19:02 ? 00:00:00 cron daemon 1866 1 0 19:02 ? 00:00:00 atd root 1867 1 0 19:02 ? 00:00:00 acpid -c /etc/acpi/events -s /va root 1870 1 0 19:02 ? 00:00:00 /usr/sbin/irqbalance root 1886 1 0 19:02 ? 00:00:00 /usr/sbin/sshd -D root 1910 1 0 19:02 ? 00:00:00 upstart-file-bridge --daemon root 1925 1 0 19:02 ? 00:00:00 /bin/sh /etc/init.d/ondemand bac root 1937 1925 0 19:02 ? 00:00:00 sleep 60 syslog 1943 1 2 19:02 ? 00:00:00 rsyslogd root 2023 1 0 19:02 ? 00:00:00 /usr/bin/python /usr/bin/cloud-i root 2025 0 0 19:02 ? 00:00:00 ps -ef -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1551854 Title: LXD bootstrap issues on xenial Status in linux package in Ubuntu: Confirmed Bug description: I'm using lxd with zfs block storage on xenial, and having issues with trusty containers. I've witnessed this problem when trying to bootstrap as well as after rebooting the host and a container failed to start. In the latter case, the container that failed to start was the juju controller: c@mawhrin-skel:~/omnibus-layers$ lxc list [3/3] +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-0 | STOPPED | | | PERSISTENT | 0 | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-1 | RUNNING | 10.0.3.28 (eth0) | | PERSISTENT | 0 | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-2 | RUNNING | 10.0.3.85 (eth0) | | PERSISTENT | 0 | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-3 | RUNNING | 10.0.3.176 (eth0) | | PERSISTENT | 0 | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-4 | RUNNING | 10.0.3.66 (eth0) | | PERSISTENT | 0 | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-5 | RUNNING | 10.0.3.31 (eth0) | | PERSISTENT | 0 | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-6 | RUNNING | 10.0.3.196 (eth0) | | PERSISTENT | 0 | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-7 | RUNNING | 10.0.3.186 (eth0) | | PERSISTENT | 0 | | | | 10.0.4.1 (lxcbr0) | | | | +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+ I manually started it, but found that no upstart services were started. Remembering this thread, https://lists.ubuntu.com/archives/juju/2016-February/006698.html, I checked /var/log/mountall.log in the machine-0 container, and sure enough: root@juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-0:~# cat /var/log/upstart/mountall.log mount: permission denied mountall: mount /sys/kernel/debug [187] terminated with status 32 mountall: Filesystem could not be mounted: /sys/kernel/debug The problem persists if I stop and start the container. If I remount /sys/kernel/debug on the host, then stop and start the container, upstart succeeds and the juju controller starts up. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-8-generic 4.4.0-8.23 ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2 Uname: Linux 4.4.0-8-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: c 24562 F.... pulseaudio CurrentDesktop: MATE Date: Tue Mar 1 10:52:45 2016 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=007cedda-f922-4e4c-89b1-57b31f18292e InstallationDate: Installed on 2016-02-28 (2 days ago) InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224) MachineType: LENOVO 2306CTO ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-8-generic.efi.signed root=/dev/mapper/ubuntu--mate--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-8-generic N/A linux-backports-modules-4.4.0-8-generic N/A linux-firmware 1.156 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/22/2014 dmi.bios.vendor: LENOVO dmi.bios.version: G2ETA1WW (2.61 ) dmi.board.asset.tag: Not Available dmi.board.name: 2306CTO dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG2ETA1WW(2.61):bd04/22/2014:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2306CTO dmi.product.version: ThinkPad X230 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1551854/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
