Moved the bug over to the kernel. Those log messages are caused by reference issues in a network namespace preventing it from being flushed, in turn preventing the LXC monitor from exiting, holding everything up.
** Package changed: lxd (Ubuntu) => linux (Ubuntu) -- 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/1858389 Title: lxd won't restart a container Status in linux package in Ubuntu: New Bug description: During the upgrade of a container from xenial to bionic, the container stopped working after the reboot. In an manual attempt to start the container: # lxc start juju-3fae13-25-lxd-6 error: Monitor is hung There are no failures reported in lxd/lxc related log files The dmesg does give some possibly related lines: [24085329.749762] unregister_netdevice: waiting for eth2 to become free. Usage count = 1 [24085339.874547] unregister_netdevice: waiting for eth2 to become free. Usage count = 1 [24085349.931433] unregister_netdevice: waiting for eth2 to become free. Usage count = 1 [24085360.136221] unregister_netdevice: waiting for eth2 to become free. Usage count = 1 [24085370.329020] unregister_netdevice: waiting for eth2 to become free. Usage count = 1 I could find that eth2 got renamed quite a few time: dmesg | grep eth2 | grep renamed [ 10.974225] i40e 0000:02:00.2 eno3: renamed from eth2 [ 38.168206] eth2: renamed from vethX6IXIX [ 39.528396] eth1: renamed from veth2L8Q43 [ 39.544217] eth2: renamed from vethCL4RR8 [ 42.132600] eth0: renamed from veth27ILVJ [ 42.184425] eth2: renamed from vethGV30Y9 [ 43.332523] eth2: renamed from veth38IOJO [ 44.553249] eth2: renamed from vethYWPS85 [ 47.696816] eth2: renamed from vethRS5NIA [12244954.658741] eth0: renamed from veth23WYKR [12244954.712483] eth2: renamed from vethXKHJAY [21391530.547187] eth2: renamed from vethON24JW [21392047.344985] eth2: renamed from vethBHEXYH [21852338.859877] eth2: renamed from veth44669K Kernel running: uname -a Linux openstack-9 4.4.0-143-generic #169-Ubuntu SMP Thu Feb 7 07:56:38 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux lxd running: dpkg -l | grep lxd ii lxd 2.0.11-0ubuntu1~16.04.4 amd64 Container hypervisor based on LXC - daemon ii lxd-client 2.0.11-0ubuntu1~16.04.4 amd64 Container hypervisor based on LXC - client To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1858389/+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
