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List:       xen-devel
Subject:    Re: [Xen-devel] Cannot create domU
From:       Chris Bainbridge <chris.bainbridge () gmail ! com>
Date:       2005-09-30 14:48:01
Message-ID: 623652d50509300748w795b76f7n () mail ! gmail ! com
[Download RAW message or body]

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=="xen-backend", KERNEL=="vif*", ACTION=="online",
RUN+="/etc/xen/scripts/launch up"
SUBSYSTEM=="xen-backend", KERNEL=="vbd*", ACTION=="add",
RUN+="/etc/xen/scripts/vbd-add %k"
SUBSYSTEM=="xen-backend", KERNEL=="vbd*", ACTION=="remove",
RUN+="/etc/xen/scripts/vbd-remove %k"
SUBSYSTEM=="xen-backend", KERNEL=="vif*", ACTION=="remove",
RUN+="/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="/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=$(xenstore-read "$XENBUS_PATH"/type)
params=$(xenstore-read "$XENBUS_PATH"/params)
[ -x /etc/xen/scripts/block-"$t" ] && \
    /etc/xen/scripts/block-"$t" bind $params

xen scripts # cat vbd-remove
#!/bin/sh
t=$(xenstore-read "$XENBUS_PATH"/type)
node=$(xenstore-read "$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}

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