kexec-tools/kdump_dracut_modules/99kdumpbase/module-setup.sh
Dave Young ba0aa24316 Add ssh dump support
Add ssh dump support

changes including below items:
1. sshkey option
2. sshkey propagate
3. fix a bug of  _server ip calculation for dump target string
4. change the prefix of kdump hook from 93 to 01 to avoid dhclient and
   other cleanups happening before us
5. enable network with dracut cmdline rd.neednet=1 when there's network
   target config

[v1 - v2]:
Only check_ssh_target when there's ssh dump target in kdump config file

[v2 -> v3]
style fixes: trailing spaces and space before tab indent
remove set -x
simply check_ssh_target
use awk to get sshkey option value
change pivot hook order to 0000

Signed-off-by: Dave Young <dyoung@redhat.com>
2012-02-22 14:12:57 +08:00

92 lines
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#!/bin/bash
. $dracutfunctions
check() {
[[ $debug ]] && set -x
#kdumpctl sets this explicitly
if [ -z "$IN_KDUMP" ] || [ ! -f /etc/kdump.conf ]
then
return 1
fi
return 0
}
depends() {
echo "base shutdown"
return 0
}
to_udev_name() {
local dev="$1"
case "$dev" in
UUID=*)
dev=`blkid -U "${dev#UUID=}"`
;;
LABEL=*)
dev=`blkid -L "${dev#LABEL=}"`
;;
esac
echo ${dev#/dev/}
}
is_bridge() {
[ -d /sys/class/net/"$1"/bridge ]
}
is_bond() {
[ -d /sys/class/net/"$1"/bonding ]
}
install() {
local _server
local _netdev
sed -ne '/^#/!p' /etc/kdump.conf > /tmp/$$-kdump.conf
while read config_opt config_val;
do
case "$config_opt" in
ext[234]|xfs|btrfs|minix|raw)
sed -i -e "s#$config_val#/dev/$(to_udev_name $config_val)#" /tmp/$$-kdump.conf
;;
net)
if strstr "$config_val" "@"; then
_server=`echo $config_val | sed 's/.*@//' | cut -d':' -f1`
else
_server=$(echo $config_val | sed -e 's#\(.*\):.*#\1#')
fi
_netdev=`/sbin/ip route get to $_server 2>&1`
[ $? != 0 ] && echo "Bad kdump location: $config_val" && exit 1
#the field in the ip output changes if we go to another subnet
if [ -n "`echo $_netdev | grep via`" ]
then
# we are going to a different subnet
_netdev=`echo $_netdev|awk '{print $5;}'|head -n 1`
else
# we are on the same subnet
_netdev=`echo $_netdev|awk '{print $3}'|head -n 1`
fi
echo " ip=$_netdev:dhcp rd.neednet=1" > ${initdir}/etc/cmdline.d/40ip.conf
if is_bridge "$_netdev"; then
echo " bridge=$_netdev:$(cd /sys/class/net/$_netdev/brif/; echo *)" > ${initdir}/etc/cmdline.d/41bridge.conf
elif is_bond "$_netdev"; then
echo " bond=$_netdev:\"$(cat /sys/class/net/$_netdev/bonding/slaves)\"" > ${initdir}/etc/cmdline.d/42bond.conf
#TODO
#echo "bondoptions=\"$bondoptions\"" >> /tmp/$$-bond
else
:
fi
;;
esac
done < /etc/kdump.conf
inst "/bin/date" "/bin/date"
inst "/bin/sync" "/bin/sync"
inst "/bin/cut" "/bin/cut"
inst "/sbin/makedumpfile" "/sbin/makedumpfile"
inst "/tmp/$$-kdump.conf" "/etc/kdump.conf"
inst_hook pre-pivot 0000 "$moddir/kdump.sh"
}