On Tue, Jan 15, 2008 at 12:26:43AM -0800, Dave Leskovec wrote:
> Greetings,
>
> Following up on the XML format for the Linux Container support I
> proposed... I've made the following recommended changes:
> * Changed mount tags
> * Changed nameserver tag to be consistent with gateway
> * Moved cpushare and memory tags outside container tag
>
> This is the updated format:
> <domain type='linuxcontainer'>
> <name>Container123</name>
> <uuid>8dfd44b31e76d8d335150a2d98211ea0</uuid>
> <container>
> <filesystem>
> <mount>
> <source dir="/home/user/lxc_files/etc/"/>
> <target dir="/etc/"/>
> </mount>
> <mount>
> <source dir="/home/user/lxc_files/var/"/>
> <target dir="/var/"/>
> </mount>
> </filesystem>
Comparing this to the Linux-VServer XML that Daniel posted, you're both
pretty much representing the same concepts so we need to make a decision
about which format to use for filesystem mounts.
OpenVZ also provides a /domain/container/filesystem tag, though it
uses a concept of filesystem templates auto-cloned per container
rather than explicit mounts. I think I'd like to see
<filesystem type="mount">
<source dir="/home/user/lxc_files/etc/"/>
<target dir="/etc/"/>
</filesystem>
For the existing OpenVZ XML, we can augment their <filesystem> tag with
an attribute type="template".
> <application>/usr/sbin/container_init</application>
> <network hostname='browndog'>
> <ip address="192.168.1.110" netmask="255.255.255.0"/>
> <gateway address="192.168.1.1"/>
> <nameserver address="192.168.1.1"/nameserver>
> </ip>
> </network>
Again this is pretty similar to needs of VServer / OpenVZ. In the existing
OpenVZ XML, the gateway and nameserver tags are immediately within the
<network> tag, rather than nested inside the <ip> tag. Aside from that it
looks to be a consistent set of information.
> </container>
> <cpushare>40</cpushare>
As Daniel points out, we've thus far explicitly excluded tuning info from
the XML. Not that I have any suggestion on where else to put it at this
time. This is a minor thing though, easily implemented once we come to a
decision.
> <memory>65536</memory>
> <devices>
> <console tty='/dev/pts/4'/>
> </devices>
> </domain>
>
> Does this look ok now? All comments and questions are welcome.
Pretty close.
Dan.
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