[Pkg-xen-devel] xen-api: xcp-xapi.init conflicts with xend

[Thomas Goirand]

On 12/22/2011 01:37 AM, Mike McClurg wrote:
> Hi Thomas, Jon,
> 
> I was hoping that you could both comment on this github pull request:
> 
> https://github.com/jonludlam/xen-api/pull/12
> 
> Mike
> 

In Debian, /etc/default/xen is there to select xm vs xl. So we could do:

if ! [ -f /etc/default/xen ] ; then
	TOOLSTACK=xm
else
	. /etc/default/xen
	if ! [ "x${TOOLSTACK}" = "xxl" ] ; then
		TOOLSTACK=xm
	fi
fi

if ! [ ${TOOLSTACK} = "xl" ] ; then
	log_failure_msg "Please configure /etc/default/xen to use xl"
	exit 1
fi

I think it's also good to check for a xend instance, but I'd rather
advocate for doing this:

# Exit with failure if xend is running
if [ -f /var/run/xend.pid ] ; then
	log_failure_msg "xend.pid found, XCP conflicts with xend"
	exit 1
fi

By the way, I was thinking, would you like me to add a debconf question
like this:

Template: xen/xl_toolstack
Type: select
Choices: xm, xl
_Description: Xen tool stack to use:
 Xen offers 2 types of command line interface to start and stop virtual
machines. xm is the old one, while xl is the new way using the Xen Light
library.
 .
 If you intend to use Xen together with the Xen Cloud Platform API
(xcp-api) package, then you must choose xl.

That would of course control what's in /etc/default/xen

Thomas