Hi everyone, Can someone explain to me why/how this problem can happen : LXC is running for days, suddenly something happen and LXC is not able to communicate with some process related to cgmanager . Only option is to stop/start the container again
lxc-ls -f NAME STATE IPV4 IPV6 GROUPS AUTOSTART ------------------------------------------------------------- yunohost RUNNING xxx.xxx.xxx.xxx - - NO lxc-attach -n yunohost lxc-attach: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-attach: cgmanager.c: cgm_attach: 1460 Failed to enter group /user.slice lxc-attach: attach.c: lxc_attach: 909 error communicating with child process lxc-info -n yunohost lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: Name: yunohost lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: State: RUNNING lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: PID: 26614 IP: xxx.xxx.xxx.xxx lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup cpuacct: lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup blkio: lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup memory: lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: lxc-info: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-info: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup memory: Link: vethJCTHVT TX bytes: 10.89 MiB RX bytes: 390.76 MiB Total bytes: 401.65 MiB benoit@lxd-virt-01a:~$ lxc-stop -n yunohost lxc-stop: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-stop: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: lxc-stop: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-stop: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: lxc-stop: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request lxc-stop: cgmanager.c: do_cgm_get: 901 Failed to enter container cgroup freezer: lxc-ls -f NAME STATE IPV4 IPV6 GROUPS AUTOSTART ------------------------------------------------------------- yunohost STOPPED - - - NO lxc-start -n yunohost lxc-attach -n yunohost root@yunohost:/# uptime 19:27:35 up 0 min, 0 users, load average: 0,74, 0,69, 0,68 I'm missing some parts to understand what means this error. I'm running an unprivileged container It happened to me at least 2 to 3 times since I'm using LXC/LXD I'm not able yet to explain how to reproduce. Does "service lxc restart" or "service lxd restart" or "service cgmanager restart" can introduce this ? I feel like it's only related to systemd and dbus since I cannot have a "normal" debian 8 system working well with dbus, avhi-daemon and stuff like that. All LXC containers are running Is there any thing I can do but stop and start the container ? What is technically missing from lxc to work ? Thanks a lot for your help . Have a nice (long?) weekend Cordialement, Benoît Georgelin
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