On 01/25/2012 08:18 AM, Serge Hallyn wrote:
Quoting Daniel P. Berrange (berrange(a)redhat.com):
> On Tue, Jan 24, 2012 at 11:53:38AM -0700, Eric Blake wrote:
>> Systemd detects containers based on whether they have
>> an environment variable starting with 'container=lxc';
>> using a longer name fits the expectations, while also
>> allowing detection of who created the container.
>>
>> Requested by Lennart Poettering, in response to
>>
https://bugs.freedesktop.org/show_bug.cgi?id=45175
>>
> ACK, I had actually offered to do this before, but at the time
> it was though having LIBVIRT_LXC_UUID was fine.
And it still is... right? container= is just deemed prettier?
According to the systemd bug above, yes. Also, from my IRC conversation
with Lennart, I came away with the idea that other containers are also
setting $container, so having ALL containers set the same environment
variable (and realizing that other containers obviously won't be using
LIBVIRT_LXC_*) makes it easier for systemd to recognize all containers
from just a single variable name, rather than having to hand-maintain a
growing list as new containers are created.
At any rate, I've pushed the patch now.
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library
http://libvirt.org