[libvirt] LXC support?
Cole Robinson
crobinso at redhat.com
Wed Dec 23 19:28:15 UTC 2009
On 12/23/2009 01:12 PM, Diego Elio “Flameeyes” Pettenò wrote:
> I've been wanting to give a try to libvirt to handle containers from LXC
> as well, but seems like if I follow the default configuration example, I
> get this:
>
> virsh # create /etc/libvirt/lxc/axant.xml
> errore: Impossibile creare il dominio da /etc/libvirt/lxc/axant.xml
> errore: unknown OS type exe
>
> [sorry for the Italian message, but it doesn't really matter]
>
> The configuration is this:
>
> <domain type='lxc'>
> <name>axant</name>
> <memory>14680064</memory>
> <os>
> <type>exe</type>
> <init>/init</init>
> </os>
> <vcpu>8</vcpu>
> <clock offset="utc" />
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>destroy</on_crash>
> <devices>
> <emulator>/usr/libexec/libvirt_lxc</emulator>
>
> <filesystem type='mount'>
> <source dir='/media/chroots/axant'/>
> <target dir='/'/>
> </filesystem>
>
> <interface type='bridge'>
> <mac address="8e:8b:e5:aa:28:b6" />
> <source bridge="br0" />
> </interface>
> <console type='pty' />
> </devices>
> </domain>
>
> am I doing something wrong or the doc at [1] is outdated somehow?
>
>
> [1] http://libvirt.org/drvlxc.html
>
What is the output of 'virsh --connect lxc:/// capabilities'? Mine looks like:
<capabilities>
<host>
<cpu>
<arch>x86_64</arch>
</cpu>
<topology>
<cells num='1'>
<cell id='0'>
<cpus num='2'>
<cpu id='0'/>
<cpu id='1'/>
</cpus>
</cell>
</cells>
</topology>
</host>
<guest>
<os_type>exe</os_type>
<arch name='x86_64'>
<wordsize>32</wordsize>
<emulator>/usr/libexec/libvirt_lxc</emulator>
<domain type='lxc'>
</domain>
</arch>
</guest>
</capabilities>
And I can define your posted config without error. If you don't have a guest
block, defining any guest will fail, so the lxc capability detection probably
needs to be taught how to work with your system. You can checkout out
src/lxc/lxc_conf.c:lxcCapsInit
- Cole
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