Quoting david.an...@bli.uzh.ch (david.an...@bli.uzh.ch): > I have additional details to this: > > this error occurs both with kernel 3.19.0-16 and 3.19.0-18 and unprivileged > containers reproducibly produce processes in uninterruptible sleep state: > > root@andel2:~# ps aux | egrep ' D | Z | H ' > 200000 4637 0.0 0.0 4472 1480 ? D 14:03 0:00 /bin/sh > /usr/bin/savelog -q -p -c 5 /var/log/dmesg > 200000 4671 0.1 0.1 112456 6060 ? D 14:03 0:00 > /usr/sbin/nginx > > After this happens, all further lxc- calls hang or return errors, like e.g. > david@andel2:~$ lxc-ls -f > lxc_container: cgmanager.c: lxc_cgmanager_enter: 694 call to > cgmanager_move_pid_abs_sync failed: invalid request > > lxc_container: cgmanager.c: do_cgm_get: 871 Failed to enter container cgroup > freezer:
Ok now this bit doesn't surprise me, that's due to an attach bug which should be fixed by this patch: https://lists.linuxcontainers.org/pipermail/lxc-devel/2015-May/011795.html > lxc_container: cgmanager.c: lxc_cgmanager_enter: 694 call to > cgmanager_move_pid_abs_sync failed: invalid request > > lxc_container: cgmanager.c: do_cgm_get: 871 Failed to enter container cgroup > freezer: > lxc_container: utils.c: switch_to_ns: 1337 No such file or directory - failed > to open /proc/3109/ns/net > lxc_container: lxccontainer.c: lxcapi_get_ips: 1665 No such file or directory > - failed to enter namespace > lxc_container: cgmanager.c: lxc_cgmanager_enter: 694 call to > cgmanager_move_pid_abs_sync failed: invalid request > > lxc_container: cgmanager.c: do_cgm_get: 871 Failed to enter container cgroup > freezer: > lxc_container: utils.c: switch_to_ns: 1337 No such file or directory - failed > to open /proc/3109/ns/net > lxc_container: lxccontainer.c: lxcapi_get_ips: 1665 No such file or directory > - failed to enter namespace > NAME STATE IPV4 IPV6 GROUPS AUTOSTART > > ... > > > -----"lxc-users" <lxc-users-boun...@lists.linuxcontainers.org> wrote: ----- > To: LXC users mailing-list <lxc-users@lists.linuxcontainers.org> > From: david.an...@bli.uzh.ch > Sent by: "lxc-users" > Date: 05/27/2015 16:05 > Subject: Re: [lxc-users] lxc-ls -f problem > > Now attached the output of > strace -f -ostrace.out -- lxc-ls -f > strace -f -ostrace-start.out -- lxc-start -n s0_RStSh > lxc-start -n s0_RStSh -l trace -o debug.out > > I was running these not as root this time but if that is required I will post > those as well. > > Interestingly, this happens only on a vivid running in a KVM. > On three other vivid instances running on bare metal this does not happen. > > I am running the latest stable releases from the PPA, i.e. lxc 1.1.2-0ubuntu3. > > Cheers, > David > > > -----"lxc-users" <lxc-users-boun...@lists.linuxcontainers.org> wrote: ----- > To: LXC users mailing-list <lxc-users@lists.linuxcontainers.org> > From: david.an...@bli.uzh.ch > Sent by: "lxc-users" > Date: 05/23/2015 20:47 > Subject: Re: [lxc-users] lxc-ls -f problem > > Hi > > I have the exact same problem after yesterdays update. > > And I suspect it is bug > https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1413927 or at least > closely related. > > root@andel2:~# cat /proc/self/cgroup > 10:devices:/system.slice/ssh.service > 9:perf_event:/system.slice/ssh.service > 8:cpuset:/system.slice/ssh.service > 7:cpu,cpuacct:/system.slice/ssh.service > 6:memory:/system.slice/ssh.service > 5:freezer:/system.slice/ssh.service > 4:net_cls,net_prio:/system.slice/ssh.service > 3:hugetlb:/system.slice/ssh.service > 2:blkio:/system.slice/ssh.service > 1:name=systemd:/system.slice/ssh.service > > root@andel2:~# service cgmanager status > ● cgmanager.service - Cgroup management daemon > Loaded: loaded (/lib/systemd/system/cgmanager.service; disabled; vendor > preset: enabled) > Active: active (running) since Sat 2015-05-23 15:48:07 CEST; 30min ago > Main PID: 2994 (cgmanager) > Memory: 296.0K > CGroup: /system.slice/cgmanager.service > ‣ 2994 /sbin/cgmanager -m name=systemd > > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager: Invalid path > /run/cgmanager/fs/hugetlb/system.slice/ssh.service/lxc/s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager:per_ctrl_move_pid_main: > Invalid path /run/cgmanager/fs/hugetlb/system.slice/ssh.servi...s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager: Invalid path > /run/cgmanager/fs/memory/system.slice/ssh.service/lxc/s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager:per_ctrl_move_pid_main: > Invalid path /run/cgmanager/fs/memory/system.slice/ssh.servic...s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager: Invalid path > /run/cgmanager/fs/net_cls/system.slice/ssh.service/lxc/s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager:per_ctrl_move_pid_main: > Invalid path /run/cgmanager/fs/net_cls/system.slice/ssh.servi...s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager: Invalid path > /run/cgmanager/fs/perf_event/system.slice/ssh.service/lxc/s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager:per_ctrl_move_pid_main: > Invalid path /run/cgmanager/fs/perf_event/system.slice/ssh.se...s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager: Invalid path > /run/cgmanager/fs/none,name=systemd/system.slice/ssh.service/lxc/s0_nginx > May 23 15:48:15 andel2 cgmanager[2994]: cgmanager:per_ctrl_move_pid_main: > Invalid path /run/cgmanager/fs/none,name=systemd/system.slice...s0_nginx > Hint: Some lines were ellipsized, use -l to show in full. > > The unprivileged containers could be stopped but trying to stop a running > privileged container hangs and blocked the host completely. > Even a reboot is not possible, the host answers only to ping requests, ssh > returns with "Write failed: Broken pipe". > And since the machine is geographically distant (and it's weekend as usual > when such stuff happens) I cannot provide the results generated from the > commands below. > > But probably I am going to run into the same error on other machines and will > provide the results. > > David > > > -----"lxc-users" <lxc-users-boun...@lists.linuxcontainers.org> wrote: ----- > To: LXC users mailing-list <lxc-users@lists.linuxcontainers.org> > From: Serge Hallyn > Sent by: "lxc-users" > Date: 05/22/2015 17:44 > Subject: Re: [lxc-users] lxc-ls -f problem > > Quoting Dave Birch (dave.bi...@gmail.com): > > Dave Birch <dave.birch@...> writes: > > > > Further update - just discovered that lxc-start now hangs for all > > containers, even newly created ones using only the standard download > > template on lxc-create. > > > > I'm pretty much dead in the water until I can work out how to resolve > > this. > > Can you attach the results of > > sudo strace -f -ostrace.out -- lxc-ls -f > sudo strace -f -ostrace-start.out -- lxc-start -n <container> > sudo lxc-start -n <container> -l trace -o debug.out > > and show your exact steps, if you can remember them or have them in > history, when you were originally creating these containers? > _______________________________________________ > lxc-users mailing list > lxc-users@lists.linuxcontainers.org > http://lists.linuxcontainers.org/listinfo/lxc-users > > _______________________________________________ > lxc-users mailing list > lxc-users@lists.linuxcontainers.org > http://lists.linuxcontainers.org/listinfo/lxc-users > > _______________________________________________ > lxc-users mailing list > lxc-users@lists.linuxcontainers.org > http://lists.linuxcontainers.org/listinfo/lxc-users > > [attachment "outfiles.tgz" removed by David Andel/at/UZH] > _______________________________________________ > lxc-users mailing list > lxc-users@lists.linuxcontainers.org > http://lists.linuxcontainers.org/listinfo/lxc-users _______________________________________________ lxc-users mailing list lxc-users@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-users
