LXC support in 2.6.38

[Stéphane Graber]

Hello,

I'd like to use my mx51 system to run LXC containers.
Running lxc-checkconfig gives me the following output:
root@linaro:~# lxc-checkconfig
Kernel config /proc/config.gz not found, looking in other places...
Found kernel config file /boot/config-2.6.38-1000-linaro-mx51
--- Namespaces ---
Namespaces: enabled
Utsname namespace: missing
Ipc namespace: required
Pid namespace: required
User namespace: missing
Network namespace: missing
Multiple /dev/pts instances: missing

--- Control groups ---
Cgroup: required
Cgroup namespace: missing
Cgroup device: missing
Cgroup sched: missing
Cgroup cpu account: missing
Cgroup memory controller: missing

--- Misc ---
Veth pair device: missing
Macvlan: missing
Vlan: enabled
File capabilities: missing

That indicates that the following REQUIRED options are missing:
 - CONFIG_IPC_NS
 - CONFIG_PID_NS
 - CONFIG_CGROUPS

And the following RECOMMENDED options are missing:
 - CONFIG_UTS_NS
 - CONFIG_USER_NS
 - CONFIG_NET_NS
 - CONFIG_CGROUP_NS
 - CONFIG_CGROUP_DEVICE
 - CONFIG_CGROUP_SCHED
 - CONFIG_CGROUP_CPUACCT
 - CONFIG_CGROUP_MEM_RES_CTLR
 - CONFIG_VETH
 - CONFIG_MACVLAN
 - CONFIG_SECURITY_FILE_CAPABILITIES

Among the RECOMMENDED ones, I consider the following essential for a usable LXC setup:
 - CONFIG_UTS_NS
 - CONFIG_USER_NS
 - CONFIG_NET_NS
 - CONFIG_CGROUP_NS
 - CONFIG_CGROUP_DEVICE
 - CONFIG_VETH
 - CONFIG_MACVLAN

[Stéphane Graber (stgraber)]

For comparison, on a regular Ubuntu natty system (amd64), I get the following output from lxc-checkconfig:

stgraber@castiana:~$ lxc-checkconfig
Kernel config /proc/config.gz not found, looking in other places...
Found kernel config file /boot/config-2.6.38-7-generic
--- Namespaces ---
Namespaces: enabled
Utsname namespace: enabled
Ipc namespace: enabled
Pid namespace: enabled
User namespace: enabled
Network namespace: enabled
Multiple /dev/pts instances: enabled

--- Control groups ---
Cgroup: enabled
Cgroup namespace: enabled
Cgroup device: enabled
Cgroup sched: enabled
Cgroup cpu account: enabled
Cgroup memory controller: enabled
Cgroup cpuset: enabled

--- Misc ---
Veth pair device: enabled
Macvlan: enabled
Vlan: enabled
File capabilities: enabled

[Loïc Minier (lool)]

Would be nice to have LXC support in Linaro kernels to enable server work