On Thu, Dec 10, 2009 at 5:22 PM, Tony Risinger <sweetsinsemilla@gmail.com> 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
but i get a similar results either way (script/symlink):
8173 ? Ss 0:00 /usr/lib/libvirt-git/libvirt_lxc --name arch-nano --console 11 --background 8175 pts/0 Ss+ 0:00 init 8177 ? Ss 0:00 init 8181 ? Zs 0:00 [init] <defunct> 8182 ? Zs 0:00 [init] <defunct> 8183 ? Zs 0:00 [init] <defunct>
"busybox init" doc says that without an /etc/inittab, sh will be started on /dev/tty2... im am using this config:
<domain type='lxc'> <name>arch-nano</name> <memory>500000</memory> <os> <type>exe</type> <init>/sbin/init</init> </os> <devices> <filesystem type='mount'> <source dir='/vps/dom/arch-nano'/> <target dir='/'/> </filesystem> </devices> </domain>
on this config i tried removing the console/serial section altogether, but i attempted many configurations of serial/console, including changing the <target> to "2", in attempt to match busybox default.
[root@PHS-001 arch-nano]# virsh -c lxc:/// console arch-nano error: Unable to get domain status error: internal error Unable to get cgroup for arch-nano
[root@PHS-001 arch-nano]# mount | grep cgroup none on /cgroup type cgroup (rw)
if anyone can please point out what i am doing wrong to not be able to move the root and get a console, i'd greatly appreciate it. ive been really stuck on this; i'd rather not write a bunch of scripts/wrappers for lxc-* tools when libvirt does it all splendidly already!
I'm successfully using lxc via lbivirt. I doubt ns subsystem of cgroups because I usually disable it that is the difference between my configuration and yours and if I enable it I also get the same error. So could you try without ns? like: mount -t cgroup -o memory,devices,cpu,cpuacct none /cgroup I think libvirt lxc still contains a problem around ns subsystem. ozaki-r
libvirt 0.7.4+ kernel 2.6.32 (am i missing a CONFIG_*?)
thanks for your time
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