To my unwelcome surprise, when I upgraded my CentOS 5 box to the latest Xen 3.3.0, virt-install would no longer create the old config formats. What I have done to go around the SXP file format (which will probably be ungreppable if it gets big enough) is make a shell script to create old config file for you. (On openSUSE, I believe the vminstall command makes both, so maybe SLES is the same)

#!/bin/sh
#auto create script using kickstart

vpsname=$1
xenvg=”xen”
sysmem=1024
tmp=/tmp/xentmp

if [ ! "$vpsname" ]; then
echo “Syntax: $0 vps_name”
exit
elif [ ! -b /dev/$xenvg/$vpsname ]; then
echo “No block device: /dev/$xenvg/$vpsname”
exit 1
fi

#paravirt
#works
virt-install -p –location=http://x.x.x.x/centos52-32 –noautoconsole –file=/dev/$xenvg/$vpsname –name=$vpsname –ram=$sysmem –vnc -x “ks=http://x.x.x.x/kickstart/xen-guest.ks” $2

#hvm
#still working on it

#qemu-kvm
#doesn’t yet work

#create old-style xm config file
sleep 2
xm list –long $vpsname > $tmp
sed ’s/(//g;s/)//g’ $tmp > $tmp.1
uuid=`grep -m 1 uuid $tmp.1 | awk ‘{print $2}’`
mac=`grep mac $tmp.1 | awk ‘{print $2}’`

( cat < /etc/xen/$vpsname

(i’m hoping none of that gets eaten) You can probably replace that elif block to do an lvcreate automatically for you.