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rd.route should use the name from kdump_setup_ifname

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This fix bz1854037 which happens because kexec-tools generates rd.route for
eth0 instead of for kdump-eth0,
 1. "rd.route=168.63.129.16:10.0.0.1:eth0 rd.route=169.254.169.254:10.0.0.1:eth0" is passed to the dracut cmdline by kexec-tools
 2. In the 2rd kernel,
    - dracut/modules.d/40network/net-lib.sh will write /tmp/net.route.eth0 based on rd.route
    - dracut/modules.d/45ifcfg/write-ifcfg.sh will copy /tmp/net.route.eth0 to /tmp/icfg and then copytree /tmp/ifcfg to /run/initramfs/state/etc/sysconfig/network-scripts
 3. NetworkManager will try to get an IP for eth0 regardless of the fact it's a slave NIC and time out
    ```
    $ ip link show
    2: kdump-eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
       link/ether 00:0d:3a:11:86:8b brd ff:ff:ff:ff:ff:ff
    3: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master kdump-eth0 state UP mode DEFAULT group default qlen 1000
    ```

Reported-by: Huijing Hei <hhei@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com
This commit is contained in:
Coiby Xu 2021-04-25 15:58:27 +08:00 committed by Kairui Song
parent 586d767697
commit 18ffd3cb17
1 changed files with 7 additions and 7 deletions
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14
dracut-module-setup.sh
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@ -235,7 +235,7 @@ cal_netmask_by_prefix() {
#$2: srcaddr
#if it use static ip echo it, or echo null
kdump_static_ip() {
local _netdev="$1" _srcaddr="$2" _ipv6_flag
local _netdev="$1" _srcaddr="$2" kdumpnic="$3" _ipv6_flag
local _netmask _gateway _ipaddr _target _nexthop _prefix
_ipaddr=$(ip addr show dev $_netdev permanent | awk "/ $_srcaddr\/.* /{print \$2}")
@ -273,14 +273,14 @@ kdump_static_ip() {
_target="[$_target]"
_nexthop="[$_nexthop]"
fi
echo "rd.route=$_target:$_nexthop:$_netdev"
echo "rd.route=$_target:$_nexthop:$kdumpnic"
done >> ${initdir}/etc/cmdline.d/45route-static.conf
kdump_handle_mulitpath_route $_netdev $_srcaddr
kdump_handle_mulitpath_route $_netdev $_srcaddr $kdumpnic
}
kdump_handle_mulitpath_route() {
local _netdev="$1" _srcaddr="$2" _ipv6_flag
local _netdev="$1" _srcaddr="$2" kdumpnic="$3" _ipv6_flag
local _target _nexthop _route _weight _max_weight _rule
if is_ipv6_address $_srcaddr; then
@ -299,9 +299,9 @@ kdump_handle_mulitpath_route() {
_nexthop=`echo "$_route" | cut -d ' ' -f3`
_max_weight=$_weight
if [ "x" != "x"$_ipv6_flag ]; then
_rule="rd.route=[$_target]:[$_nexthop]:$_netdev"
_rule="rd.route=[$_target]:[$_nexthop]:$kdumpnic"
else
_rule="rd.route=$_target:$_nexthop:$_netdev"
_rule="rd.route=$_target:$_nexthop:$kdumpnic"
fi
fi
else
@ -491,7 +491,7 @@ kdump_install_net() {
kdump_setup_znet $_netdev
fi
_static=$(kdump_static_ip $_netdev $_srcaddr)
_static=$(kdump_static_ip $_netdev $_srcaddr $kdumpnic)
if [ -n "$_static" ]; then
_proto=none
elif is_ipv6_address $_srcaddr; then