From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Bainbridge <chris.bainbridge@gmail.com>
Subject: Re: Cannot create domU
Date: Fri, 30 Sep 2005 15:48:01 +0100
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I finally got it working under Gentoo by abandoning all the hotplug
stuff and just using a few udev rules:

xen udev # cat rules.d/49-xen.rules
SUBSYSTEM=3D=3D"xen-backend", KERNEL=3D=3D"vif*", ACTION=3D=3D"online",
RUN+=3D"/etc/xen/scripts/launch up"
SUBSYSTEM=3D=3D"xen-backend", KERNEL=3D=3D"vbd*", ACTION=3D=3D"add",
RUN+=3D"/etc/xen/scripts/vbd-add %k"
SUBSYSTEM=3D=3D"xen-backend", KERNEL=3D=3D"vbd*", ACTION=3D=3D"remove",
RUN+=3D"/etc/xen/scripts/vbd-remove %k"
SUBSYSTEM=3D=3D"xen-backend", KERNEL=3D=3D"vif*", ACTION=3D=3D"remove",
RUN+=3D"/etc/xen/scripts/vif-remove %k"

xen udev # cd /etc/xen/scripts/
xen scripts # cat launch
#!/bin/sh

# the script is specified in xend config
# and passed to us. we just call it.
export PATH=3D"/sbin:/bin:/usr/sbin:/usr/bin:$PATH"

#echo "$(date): launch $1"
#env

#echo "Running ${script} $1"
${script} $1

xen scripts # cat vbd-add
#!/bin/sh
t=3D$(xenstore-read "$XENBUS_PATH"/type)
params=3D$(xenstore-read "$XENBUS_PATH"/params)
[ -x /etc/xen/scripts/block-"$t" ] && \
    /etc/xen/scripts/block-"$t" bind $params

xen scripts # cat vbd-remove
#!/bin/sh
t=3D$(xenstore-read "$XENBUS_PATH"/type)
node=3D$(xenstore-read "$XENBUS_PATH"/node)
[ -x /etc/xen/scripts/block-"$t" ] && \
/etc/xen/scripts/block-"$t" unbind $node
# remove device backend store entries
xenstore-rm "$XENBUS_PATH"

xen scripts # cat vif-remove
#!/bin/sh
# remove device backend store entries
xenstore-rm "$XENBUS_PATH"
/sbin/ip link set ${dev} down
/sbin/brctl delif ${bridge} ${dev}