[Patch v4] Add static route into cmdline if target address is not local

[Baoquan He]

If one target address is not local and its route is different than
default gateway, the specific route to this target address need be
added. E.g, target is 192.168.200.222.

sh> ip route show
default via 192.168.122.1 dev eth0  proto static  metric 1024
192.168.200.0/24 via 192.168.100.222 dev ens10  proto static  metric 1

In this patch, get the route to the specific target address and store
it as cmdline, here is /etc/cmdline.d/45-route-static.conf. And the
route options are separated by underscore like below. Then the sotred
route can be parsed when kdump kernel boot up.

192.168.200.0/24:192.168.100.222:ens10
---
 dracut-module-setup.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
index 5ab2997..fefbe4b 100755
--- a/dracut-module-setup.sh
+++ b/dracut-module-setup.sh
@@ -79,6 +79,11 @@ kdump_static_ip() {
        _gateway=$(ip route list dev $_netdev | awk '/^default /{print $3}')
        echo -n "${_srcaddr}::${_gateway}:${_netmask}::"
     fi
+
+    /sbin/ip route show | grep -v default | grep "^[[:digit:]].*via.* $_netdev " |\
+    while read line; do
+        echo $line | awk '{printf("rd.route=%s:%s:%s\n", $1, $3, $5)}'
+    done >> ${initdir}/etc/cmdline.d/45route-static.conf
 }

kdump_get_mac_addr() {

[Baoquan He]

Harald has merged the rd.route option of semicolon as separator.

This v4 post corresponds to that.

On 07/30/14 at 02:05pm, Baoquan He wrote:
> If one target address is not local and its route is different than
> default gateway, the specific route to this target address need be
> added. E.g, target is 192.168.200.222.
>
> sh> ip route show
> default via 192.168.122.1 dev eth0  proto static  metric 1024
> 192.168.200.0/24 via 192.168.100.222 dev ens10  proto static  metric 1
>
> In this patch, get the route to the specific target address and store
> it as cmdline, here is /etc/cmdline.d/45-route-static.conf. And the
> route options are separated by underscore like below. Then the sotred
> route can be parsed when kdump kernel boot up.
> 192.168.200.0/24:192.168.100.222:ens10
>
> dracut-module-setup.sh | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
> index 5ab2997..fefbe4b 100755
> --- a/dracut-module-setup.sh
> +++ b/dracut-module-setup.sh
> @@ -79,6 +79,11 @@ kdump_static_ip() {
>         _gateway=$(ip route list dev $_netdev | awk '/^default /{print $3}')
>         echo -n "${_srcaddr}::${_gateway}:${_netmask}::"
>      fi
> /sbin/ip route show | grep -v default | grep "^[[:digit:]].*via.* $_netdev " |\
> while read line; do
>    echo $line | awk '{printf("rd.route=%s:%s:%s\n", $1, $3, $5)}'
> done >> ${initdir}/etc/cmdline.d/45route-static.conf
>
> }
> kdump_get_mac_addr() {
>
> 1.9.0

[Dave Young]

Ccing Marc
On 07/30/14 at 02:05pm, Baoquan He wrote:
> If one target address is not local and its route is different than
> default gateway, the specific route to this target address need be
> added. E.g, target is 192.168.200.222.
>
> sh> ip route show
> default via 192.168.122.1 dev eth0  proto static  metric 1024
> 192.168.200.0/24 via 192.168.100.222 dev ens10  proto static  metric 1
>
> In this patch, get the route to the specific target address and store
> it as cmdline, here is /etc/cmdline.d/45-route-static.conf. And the
> route options are separated by underscore like below. Then the sotred

s/_/: ?
> route can be parsed when kdump kernel boot up.
>
> 192.168.200.0/24:192.168.100.222:ens10

Missing sob line?

Otherwise assume test is ok:
Acked-by: Dave Young
> dracut-module-setup.sh | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
> index 5ab2997..fefbe4b 100755
> --- a/dracut-module-setup.sh
> +++ b/dracut-module-setup.sh
> @@ -79,6 +79,11 @@ kdump_static_ip() {
>         _gateway=$(ip route list dev $_netdev | awk '/^default /{print $3}')
>         echo -n "${_srcaddr}::${_gateway}:${_netmask}::"
>      fi
> /sbin/ip route show | grep -v default | grep "^[[:digit:]].*via.* $_netdev " |\
> while read line; do
>    echo $line | awk '{printf("rd.route=%s:%s:%s\n", $1, $3, $5)}'
> done >> ${initdir}/etc/cmdline.d/45route-static.conf
>
> }
> kdump_get_mac_addr() {
>
> 1.9.0
>
> kexec mailing list
> [e-mail]
> https://lists.fedoraproject.org/mailman/listinfo/kexec

[Patch v5] Add static route into cmdline if target address is not local

[Baoquan He]

If one target address is not local and its route is different than
default gateway, the specific route to this target address need be
added. E.g, target is 192.168.200.222.

sh> ip route show
default via 192.168.122.1 dev eth0  proto static  metric 1024
192.168.200.0/24 via 192.168.100.222 dev ens10  proto static  metric 1

In this patch, get the route to the specific target address and store
it as cmdline, here is /etc/cmdline.d/45-route-static.conf. And the
route options are separated by semicolon like below. Then the stored
route can be parsed when kdump kernel boot up.

192.168.200.0/24:192.168.100.222:ens10

Signed-off-by: Baoquan He 
---
 dracut-module-setup.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
index 5ab2997..fefbe4b 100755
--- a/dracut-module-setup.sh
+++ b/dracut-module-setup.sh
@@ -79,6 +79,11 @@ kdump_static_ip() {
        _gateway=$(ip route list dev $_netdev | awk '/^default /{print $3}')
        echo -n "${_srcaddr}::${_gateway}:${_netmask}::"
     fi
+
+    /sbin/ip route show | grep -v default | grep "^[[:digit:]].*via.* $_netdev " |\
+    while read line; do
+        echo $line | awk '{printf("rd.route=%s:%s:%s\n", $1, $3, $5)}'
+    done >> ${initdir}/etc/cmdline.d/45route-static.conf
 }

kdump_get_mac_addr() {

[Patch v5] Add static route into cmdline if target address is not local

[Vivek Goyal]

On Thu, Jul 31, 2014 at 10:21:39AM +0800, Baoquan He wrote:
> If one target address is not local and its route is different than
> default gateway, the specific route to this target address need be
> added. E.g, target is 192.168.200.222.
>
> sh> ip route show
> default via 192.168.122.1 dev eth0  proto static  metric 1024
> 192.168.200.0/24 via 192.168.100.222 dev ens10  proto static  metric 1
>
> In this patch, get the route to the specific target address and store
> it as cmdline, here is /etc/cmdline.d/45-route-static.conf. And the
> route options are separated by semicolon like below. Then the stored
> route can be parsed when kdump kernel boot up.
>
> 192.168.200.0/24:192.168.100.222:ens10
>
> Signed-off-by: Baoquan He

Looks good to me.

Thanks Bao. Static route support is important one.

Acked-by: Vivek Goyal

Thanks
Vivek
> dracut-module-setup.sh | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
> index 5ab2997..fefbe4b 100755
> --- a/dracut-module-setup.sh
> +++ b/dracut-module-setup.sh
> @@ -79,6 +79,11 @@ kdump_static_ip() {
>         _gateway=$(ip route list dev $_netdev | awk '/^default /{print $3}')
>         echo -n "${_srcaddr}::${_gateway}:${_netmask}::"
>      fi
> /sbin/ip route show | grep -v default | grep "^[[:digit:]].*via.* $_netdev " |\
> while read line; do
>    echo $line | awk '{printf("rd.route=%s:%s:%s\n", $1, $3, $5)}'
> done >> ${initdir}/etc/cmdline.d/45route-static.conf
>
> }
> kdump_get_mac_addr() {
>
> 1.8.5.3
>
> kexec mailing list
> [e-mail]
> https://lists.fedoraproject.org/mailman/listinfo/kexec