Re: [libvirt] simple LXC/libvirt busybox container (Unable to get cgroup)

On Thu, Dec 10, 2009 at 9:03 PM, Daniel P. Berrange <berrange(a)redhat.com&gt; wrote: > On Thu, Dec 10, 2009 at 02:22:37AM -0600, Tony Risinger wrote: >> i'm trying to get even the simplest busybox container with libvirt+LXC >> with very limited success.  I feel l am missing something supremely >> simple for me to be hung on this for weeks. >> >> i dont see anything interesting in domain log, but getting this error >> from "LIBVIRT_DEBUG=1 libvirtd": >> >> 05:27:56.113: error : lxcDomainGetInfo:462 : internal error Unable to >> get cgroup for arch-nano >> 05:27:56.113: debug : virDomainFree:2004 : domain=0x81d8e68 >> 05:27:56.113: debug : virUnrefDomain:422 : unref domain 0x81d8e68 arch-nano 1 >> 05:27:56.113: debug : virReleaseDomain:376 : release domain 0x81d8e68 arch-nano >> 05:27:56.113: debug : virReleaseDomain:392 : unref connection 0x81dc0f0 2 >> 05:27:56.113: debug : remoteSerializeError:141 : prog=536903814 ver=1 >> proc=16 type=1 serial=4, msg=internal error Unable to get cgroup for >> arch-nano >> >> i've been using this root filesystem layout: >> >> [root@PHS-001 arch-nano]# tree >> . >> |-- bin >> |   |-- cat -> ../sbin/busybox >> |   |-- chdir -> ../sbin/busybox >> |   |-- chmod -> ../sbin/busybox >> |   |-- ls -> ../sbin/busybox >> |   |-- rm -> ../sbin/busybox >> |   |-- sh -> ../sbin/busybox >> |   `-- vi -> ../sbin/busybox >> |-- dev >> |   `-- pts >> |-- etc >> |-- proc >> |-- sbin >> |   |-- busybox >> |   `-- init -> busybox >> `-- sys >> >> all folders besides /bin and /sbin were created by libvirt.  i tried >> using the /sbin/init script previously suggested: >> >> #!/sbin/busybox >> sh > > > Sorry, my suggestion was wrong. I forgot that if you have #!/sbin/busybox > it will attempt to execute the command matching the name of the script. > So it will in fact try to run 'init', rather than 'sh'. > > Just make the libvirt XML point directly to /bin/sh  instead and it > should work. I even tested it this time :-) Hem, I still have a problem with ns subsystem enabled. Yes, I can launch a container however the cgroup hierarchy is wrong from libvirtd expecting like: /: libvirtd --daemon /5345: /usr/libexec/libvirt_lxc --name Daniel, could you confirm how about your cgroup hierarchy?