Hi,
I am trying to start a lxc container I have setup on a test Centos 6.4 box. I
downloaded and built lxc-0.9.0
and installed it into /opt/lxc-0.9.0. I believe I have it setup properly and my
test lxc host is called host1.
When I try to start it I get:
[root@sandbox ~]# lxc-start -n host1
lxc-start: Error creating cgroups
lxc-start: failed to spawn 'host1'
I have /cgroup mounted:
[root@sandbox ~]# mount |grep cgroup
cgroup on /cgroup type cgroup (rw)
[root@sandbox ~]# cat /proc/mounts | grep cgroup
cgroup /cgroup cgroup
rw,relatime,net_prio,perf_event,blkio,net_cls,freezer,devices,memory,cpuacct,cpu,ns,cpuset
0 0
I did a strace with the start command and it seems it can't execute mkdir:
access("/cgroup/lxc/host1", F_OK) = -1 ENOENT (No such file or directory)
mkdir("/cgroup/lxc/host1", 0755) = -1 EINVAL (Invalid argument)
write(3, " lxc-start 1375881857.425 E"..., 76) = 76
write(2, "lxc-start: ", 11lxc-start: ) = 11
write(2, "Error creating cgroups", 22Error creating cgroups) = 22
Sure enough, I can't create a dir below the lxc level, but I can at the lxc
level:
[root@sandbox ~]# mkdir /cgroup/lxc/host1
mkdir: cannot create directory `/cgroup/lxc/host1': Invalid argument
[root@sandbox ~]# mkdir /cgroup/foo
[root@sandbox ~]# rmdir /cgroup/foo
[root@sandbox ~]# uname -a
Linux sandbox.rc.fas.harvard.edu 2.6.32-358.11.1.el6.x86_64 #1 SMP Wed Jun 12
03:34:52 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
[root@sandbox ~]# more /etc/issue
CentOS release 6.4 (Final)
Kernel \r on an \m
Any ideas why this is happening and how to fix it ?
Thanks in advance,
Mike
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