On Thu, Dec 10, 2009 at 9:36 PM, Daniel P. Berrange <berra...@redhat.com> wrote: > On Thu, Dec 10, 2009 at 09:26:39PM +0900, Ryota Ozaki wrote: >> On Thu, Dec 10, 2009 at 9:03 PM, Daniel P. Berrange <berra...@redhat.com> >> 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: >> >> >> >> [r...@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? > > What you do mean by 'ns' subsystem ?
'ns' is one of functions of cgroups like such as devices, memory, cpu, etc. and it is enabled if you mount cgroup without any options that Tony is doing. > > > # grep cgroup /proc/mounts > cgroup /dev/cgroups/cpu cgroup rw,relatime,cpuacct,cpu 0 0 > cgroup /dev/cgroups/memory cgroup rw,relatime,memory 0 0 > cgroup /dev/cgroups/devices cgroup rw,relatime,devices 0 0 Oh, you don't enable 'ns', so yes, things go fine in your environment. > > # cat /proc/`pgrep libvirtd`/cgroup > 32:devices:/sysdefault > 16:memory:/sysdefault > 12:cpuacct,cpu:/sysdefault > > # cat /proc/`pgrep libvirt_lxc`/cgroup > 32:devices:/sysdefault/libvirt/lxc/vm1 > 16:memory:/sysdefault/libvirt/lxc/vm1 > 12:cpuacct,cpu:/sysdefault/libvirt/lxc/vm1 > > > And the process inside the contanier is PID 12309 > > # cat /proc/12309/cgroup > 32:devices:/sysdefault/libvirt/lxc/vm1 > 16:memory:/sysdefault/libvirt/lxc/vm1 > 12:cpuacct,cpu:/sysdefault/libvirt/lxc/vm1 > > > Which all appears to be correct to me > > This is on a Fedora 12 host 2.6.31.6-145.fc12.i686.PAE with > > CONFIG_UTS_NS=y > CONFIG_IPC_NS=y > CONFIG_USER_NS=y > CONFIG_PID_NS=y > CONFIG_NET_NS=y > CONFIG_CGROUP_SCHED=y > CONFIG_CGROUPS=y > # CONFIG_CGROUP_DEBUG is not set > CONFIG_CGROUP_NS=y This is the function I'm mentioning. ozaki-r > CONFIG_CGROUP_FREEZER=y > CONFIG_CGROUP_DEVICE=y > CONFIG_CGROUP_CPUACCT=y > CONFIG_CGROUP_MEM_RES_CTLR=y > CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y > CONFIG_NET_CLS_CGROUP=y > > > Regards, > Daniel > -- > |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| > |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| > |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| > |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| > -- Libvir-list mailing list Libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
