[Lxc-users] lxc on Fedora 15

[Ramez Hanna]

On Sat, May 28, 2011 at 3:33 PM, Ramez Hanna <rhanna at informatiq.org> wrote:

> I have failed to start a container on f15 although it worked fine on 14
> here is the log
> ==snip
> [root at hovercraft boss]# cat lxc.log
> lxc-start 1306584262.160 DEBUG lxc_conf - allocated pty '/dev/pts/9' (4/5)
> lxc-start 1306584262.160 DEBUG lxc_conf - allocated pty '/dev/pts/10' (6/7)
> lxc-start 1306584262.160 DEBUG lxc_conf - allocated pty '/dev/pts/11' (8/9)
> lxc-start 1306584262.160 DEBUG lxc_conf - allocated pty '/dev/pts/12'
> (10/11)
> lxc-start 1306584262.160 INFO lxc_conf - tty's configured
> lxc-start 1306584262.160 ERROR lxc_caps - failed to cap_get_flag: Invalid
> argument
> lxc-start 1306584262.160 DEBUG lxc_console - using '/dev/tty' as console
> lxc-start 1306584262.160 DEBUG lxc_start - sigchild handler set
> lxc-start 1306584262.161 INFO lxc_start - 'boss' is initialized
> lxc-start 1306584262.161 ERROR lxc_namespace - failed to clone(0x6c020000):
> Operation not permitted
> lxc-start 1306584262.161 ERROR lxc_start - Operation not permitted - failed
> to fork into a new namespace
> lxc-start 1306584262.161 ERROR lxc_start - failed to spawn 'boss'
> lxc-start 1306584262.161 DEBUG lxc_cgroup - using cgroup mounted at
> '/sys/fs/cgroup/systemd'
> lxc-start 1306584262.161 ERROR lxc_cgroup - No such file or directory -
> failed to remove cgroup '/sys/fs/cgroup/systemd/boss'
> == end
>
> mounts
> [root at hovercraft boss]# mount |grep cgroup
> tmpfs on /sys/fs/cgroup type tmpfs
> (rw,nosuid,nodev,noexec,relatime,mode=755)
> cgroup on /sys/fs/cgroup/systemd type cgroup
> (rw,nosuid,nodev,noexec,relatime,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
> cgroup on /sys/fs/cgroup/cpuset type cgroup
> (rw,nosuid,nodev,noexec,relatime,cpuset)
> cgroup on /sys/fs/cgroup/ns type cgroup
> (rw,nosuid,nodev,noexec,relatime,ns)
> cgroup on /sys/fs/cgroup/cpu type cgroup
> (rw,nosuid,nodev,noexec,relatime,cpu)
> cgroup on /sys/fs/cgroup/cpuacct type cgroup
> (rw,nosuid,nodev,noexec,relatime,cpuacct)
> cgroup on /sys/fs/cgroup/memory type cgroup
> (rw,nosuid,nodev,noexec,relatime,memory)
> cgroup on /sys/fs/cgroup/devices type cgroup
> (rw,nosuid,nodev,noexec,relatime,devices)
> cgroup on /sys/fs/cgroup/freezer type cgroup
> (rw,nosuid,nodev,noexec,relatime,freezer)
> cgroup on /sys/fs/cgroup/net_cls type cgroup
> (rw,nosuid,nodev,noexec,relatime,net_cls)
> cgroup on /sys/fs/cgroup/blkio type cgroup
> (rw,nosuid,nodev,noexec,relatime,blkio)
>
> it looks like lxc is trying to create the container's cgroup under systemd
> which seems to be the wrong location
> any leads on how can i debug further
> how does lxc find where cgroup is mounted?
>
> see bug https://bugzilla.redhat.com/show_bug.cgi?id=683667
>


upgraded to lxc-0.7.4.1-1.1.x86_64

[root at hovercraft ~]# lxc-start -n boss -l DEBUG -o log
lxc-start: open /sys/fs/cgroup/systemd/boss/devices.deny : No such file or
directory
lxc-start: failed to setup the cgroups for 'boss'
lxc-start: failed to setup the container
lxc-start: invalid sequence number 1. expected 2
lxc-start: failed to spawn 'boss'

[root at hovercraft ~]# cat log
lxc-start 1306828803.471 DEBUG lxc_conf - allocated pty '/dev/pts/9' (4/5)
lxc-start 1306828803.471 DEBUG lxc_conf - allocated pty '/dev/pts/10' (6/7)
lxc-start 1306828803.471 DEBUG lxc_conf - allocated pty '/dev/pts/11' (8/9)
lxc-start 1306828803.471 DEBUG lxc_conf - allocated pty '/dev/pts/12'
(10/11)
lxc-start 1306828803.471 INFO lxc_conf - tty's configured
lxc-start 1306828803.471 DEBUG lxc_console - using '/dev/tty' as console
lxc-start 1306828803.471 DEBUG lxc_start - sigchild handler set
lxc-start 1306828803.471 INFO lxc_start - 'boss' is initialized
lxc-start 1306828803.478 DEBUG lxc_cgroup - using cgroup mounted at
'/sys/fs/cgroup/systemd'
lxc-start 1306828803.479 DEBUG lxc_cgroup - cgroup flags is 0x2
lxc-start 1306828803.485 INFO lxc_conf - network has been setup
lxc-start 1306828803.485 DEBUG lxc_conf - mounted '/var/lib/lxc/boss/rootfs'
on '/usr/lib64/lxc/rootfs'
lxc-start 1306828803.485 DEBUG lxc_conf - mounted 'proc' on
'/usr/lib64/lxc/rootfs//proc', type 'proc'
lxc-start 1306828803.486 DEBUG lxc_conf - mounted 'devpts' on
'/usr/lib64/lxc/rootfs//dev/pts', type 'devpts'
lxc-start 1306828803.486 DEBUG lxc_conf - mounted 'sysfs' on
'/usr/lib64/lxc/rootfs//sys', type 'sysfs'
lxc-start 1306828803.486 INFO lxc_conf - mount points have been setup
lxc-start 1306828803.486 DEBUG lxc_cgroup - using cgroup mounted at
'/sys/fs/cgroup/systemd'
lxc-start 1306828803.486 ERROR lxc_cgroup - open
/sys/fs/cgroup/systemd/boss/devices.deny : No such file or directory
lxc-start 1306828803.486 ERROR lxc_conf - failed to setup the cgroups for
'boss'
lxc-start 1306828803.486 ERROR lxc_start - failed to setup the container
lxc-start 1306828803.486 ERROR lxc_sync - invalid sequence number 1.
expected 2
lxc-start 1306828803.486 ERROR lxc_start - failed to spawn 'boss'
lxc-start 1306828803.486 DEBUG lxc_cgroup - using cgroup mounted at
'/sys/fs/cgroup/systemd'
lxc-start 1306828803.491 DEBUG lxc_cgroup - '/sys/fs/cgroup/systemd/boss'
unlinked
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