ia64/xen-unstable

view tools/examples/vif-route @ 7595:286946489e5d

From Murillo Fernandes Bernardes <mfb@br.ibm.com>:

The problem is: There is no mechanism to detect block device setup failure

Network devices have the same problem, and are fixed with this too.

I handling this problem in the way suggested by aliguori:
- hotplug scripts write a "hotplug-status" node on store
- Xend DevController.createDevice() check verify this node and return success
or throw an exception on failure.
- If no changes in "hotplug-status" node after DEVICE_CREATE_TIMEOUT seconds
Xend throw an exception showing the problem with hotplug scripts.

Signed-off-by: Ewan Mellor <ewan@xensource.com>
author emellor@leeni.uk.xensource.com
date Mon Oct 31 17:10:57 2005 +0100 (2005-10-31)
parents 19af31a59537
children 1444adb1c407
line source
1 #!/bin/sh
2 #============================================================================
3 # /etc/xen/vif-route
4 #
5 # Script for configuring a vif in routed mode.
6 # The hotplugging system will call this script if it is specified either in
7 # the device configuration given to Xend, or the default Xend configuration
8 # in /etc/xen/xend-config.sxp. If the script is specified in neither of those
9 # places, then vif-bridge is the default.
10 #
11 # Usage:
12 # vif-route (up|down)
13 #
14 # Environment vars:
15 # vif vif interface name (required).
16 # XENBUS_PATH path to this device's details in the XenStore (required).
17 #
18 # Read from the store:
19 # ip list of IP networks for the vif, space-separated (default given in
20 # this script).
21 #============================================================================
23 dir=$(dirname "$0")
24 . "$dir/vif-common.sh"
26 main_ip=$(ip addr show eth0 | sed -e '/inet /!d;s/^.*inet \([^\s*]\)\s.*$/\1/')
28 case "$command" in
29 up)
30 ifconfig ${vif} ${main_ip} netmask 255.255.255.255 up
31 echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp
32 ipcmd='a'
33 ;;
34 down)
35 ifdown ${vif}
36 ipcmd='d'
37 ;;
38 esac
40 if [ "${ip}" ] ; then
41 # If we've been given a list of IP addresses, then add routes from dom0 to
42 # the guest using those addresses.
43 for addr in ${ip} ; do
44 ip r ${ipcmd} ${addr} dev ${vif} src ${main_ip}
45 done
46 fi
48 handle_iptable()
50 success