[RFC] [PATCH] Bonding support for dracut

[RFC] [PATCH] Bonding support for dracut

[Vladislav Bogdanov]

[-- Attachment #1: Type: text/plain, Size: 251 bytes --]

Hi all,

I attach patch for bonding support in dracut.
It is against 005 (developed on fedora 13 version).
No documentation yet.
(partially) Tested to work correctly with bond0 alone and bridge on top
of bond0.

Comments are welcome,

Best,
Vladislav

[-- Attachment #2: dracut-005-bonding-support.patch --]
[-- Type: text/x-patch, Size: 13396 bytes --]

diff -urNp dracut-005.orig/modules.d/40network/check dracut-005/modules.d/40network/check
--- dracut-005.orig/modules.d/40network/check	2010-03-19 17:35:47.000000000 +0100
+++ dracut-005/modules.d/40network/check	2010-10-14 16:39:39.547565242 +0200
@@ -9,7 +9,7 @@ for program in ip arping; do 
     exit 1
   fi
 done
-for program in dhclient brctl; do
+for program in dhclient brctl ifenslave tr; do
   which $program >/dev/null 2>&1
   if [ $? -ne 0 ]; then
     dwarning "Could not find program \"$program\" it might be required by network." 
diff -urNp dracut-005.orig/modules.d/40network/ifup dracut-005/modules.d/40network/ifup
--- dracut-005.orig/modules.d/40network/ifup	2010-03-19 17:35:47.000000000 +0100
+++ dracut-005/modules.d/40network/ifup	2010-10-13 22:13:32.632014012 +0200
@@ -92,11 +92,25 @@ fi
 # $netif reads easier than $1
 netif=$1
 
+# enslave this interface to bond?
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+    for slave in $bondslaves ; do
+        if [ "$netif" = "$slave" ] ; then
+            netif=$bondname
+        fi
+    done
+fi
+
 # bridge this interface?
 if [ -e /tmp/bridge.info ]; then
     . /tmp/bridge.info
     if [ "$netif" = "$ethname" ]; then
-        netif="$bridgename"
+        if [ "$netif" = "$bondname" ] && [ -n "$DO_BOND_SETUP" ] ; then
+            : # We need to really setup bond (recursive call)
+        else
+            netif="$bridgename"
+        fi
     fi
 fi
 
@@ -115,11 +129,62 @@ if [ "$netif" = "lo" ] ; then
     exit 0
 fi
 
+# start bond if needed
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+
+    if [ "$netif" = "$bondname" ] && [ ! -e /tmp/net.$bondname.up ] ; then # We are master bond device
+        modprobe bonding
+        ip link set $netif down
+
+        # Stolen from ifup-eth
+        # add the bits to setup driver parameters here
+        for arg in $bondoptions ; do
+            key=${arg%%=*};
+            value=${arg##*=};
+            # %{value:0:1} is replaced with non-bash specific construct
+            if [ "${key}" = "arp_ip_target" -a "${#value}" != "0" -a "+${value%%+*}" != "+" ]; then
+                OLDIFS=$IFS;
+                IFS=',';
+                for arp_ip in $value; do
+                    echo +$arp_ip > /sys/class/net/${netif}/bonding/$key
+                done
+                IFS=$OLDIFS;
+            else
+                echo $value > /sys/class/net/${netif}/bonding/$key
+            fi
+        done
+
+        ip link set $netif up
+
+        for slave in $bondslaves ; do
+            ip link set $slave down
+            ifenslave $bondname $slave
+            ip link set $slave up
+            wait_for_if_up $slave
+        done
+
+        # add the bits to setup the needed post enslavement parameters
+        for arg in $BONDING_OPTS ; do
+            key=${arg%%=*};
+            value=${arg##*=};
+            if [ "${key}" = "primary" ]; then
+                echo $value > /sys/class/net/${DEVICE}/bonding/$key
+            fi
+        done
+    fi
+fi
+
+
 # XXX need error handling like dhclient-script
 
 # start bridge if necessary
 if [ "$netif" = "$bridgename" ] && [ ! -e /tmp/net.$bridgename.up ]; then
-    ip link set $ethname up
+    if [ "$ethname" = "$bondname" ] ; then
+        DO_BOND_SETUP=yes /sbin/ifup $bondname
+    else
+        ip link set $ethname up
+    fi
     wait_for_if_up $ethname
     # Create bridge and add eth to bridge
     brctl addbr $bridgename
diff -urNp dracut-005.orig/modules.d/40network/install dracut-005/modules.d/40network/install
--- dracut-005.orig/modules.d/40network/install	2010-03-19 17:35:47.000000000 +0100
+++ dracut-005/modules.d/40network/install	2010-10-13 14:50:21.307020174 +0200
@@ -1,5 +1,5 @@
 #!/bin/bash
-dracut_install ip dhclient brctl arping
+dracut_install ip dhclient brctl arping ifenslave tr
 inst "$moddir/ifup" "/sbin/ifup"
 inst "$moddir/netroot" "/sbin/netroot"
 inst "$moddir/dhclient-script" "/sbin/dhclient-script"
@@ -8,6 +8,7 @@ inst_hook pre-udev 50 "$moddir/ifname-ge
 inst_hook pre-udev 60 "$moddir/net-genrules.sh"
 inst_hook cmdline 91 "$moddir/dhcp-root.sh"
 inst_hook cmdline 99 "$moddir/parse-ip-opts.sh"
+inst_hook cmdline 97 "$moddir/parse-bond.sh"
 inst_hook cmdline 98 "$moddir/parse-bridge.sh"
 inst_hook cmdline 99 "$moddir/parse-ifname.sh"
 inst_hook pre-pivot 10 "$moddir/kill-dhclient.sh"
diff -urNp dracut-005.orig/modules.d/40network/installkernel dracut-005/modules.d/40network/installkernel
--- dracut-005.orig/modules.d/40network/installkernel	2010-03-19 17:35:47.000000000 +0100
+++ dracut-005/modules.d/40network/installkernel	2010-10-13 14:50:21.309019550 +0200
@@ -15,3 +15,5 @@ instmods ecb arc4
 # bridge modules
 instmods bridge stp llc
 instmods ipv6
+# bonding
+instmods bonding
diff -urNp dracut-005.orig/modules.d/40network/net-genrules.sh dracut-005/modules.d/40network/net-genrules.sh
--- dracut-005.orig/modules.d/40network/net-genrules.sh	2010-10-13 22:16:17.113266333 +0200
+++ dracut-005/modules.d/40network/net-genrules.sh	2010-10-13 22:08:40.000000000 +0200
@@ -20,6 +20,13 @@ fix_bootif() {
         IFACES=$ethname
     fi
 
+    # bond: attempt only the defined interface (override bridge defines)
+    if [ -e /tmp/bond.info ]; then
+        . /tmp/bond.info
+        # It is enough to fire up only one
+        IFACES=${bondslaves%% *}
+    fi
+
     # BOOTIF says everything, use only that one
     BOOTIF=$(getarg 'BOOTIF=')
     if [ -n "$BOOTIF" ] ; then
diff -urNp dracut-005.orig/modules.d/40network/parse-bond.sh dracut-005/modules.d/40network/parse-bond.sh
--- dracut-005.orig/modules.d/40network/parse-bond.sh	1970-01-01 01:00:00.000000000 +0100
+++ dracut-005/modules.d/40network/parse-bond.sh	2010-10-13 15:46:54.000000000 +0200
@@ -0,0 +1,64 @@
+#!/bin/sh
+#
+# Format:
+#	bond=<bondname>[:<bondslaves>:[:<options>]]
+#
+#	bondslaves is a comma-separated list of physical (ethernet) interfaces
+#	options is a comma-separated list on bonding options (modinfo bonding for details) in format compatible with initscripts
+#	if options include multi-valued arp_ip_target option, then its values should be separated by semicolon.
+#	
+#
+#	bond without parameters assumes bond=bond0:eth0,eth1:balance-rr
+#
+
+# return if bond already parsed
+[ -n "$bondname" ] && return
+
+# Check if bond parameter is valid 
+if getarg bond= >/dev/null ; then
+    if [ -z "$netroot" ] ; then
+	die "No netboot configured, bond is invalid"
+    fi
+fi
+
+# We translate list of slaves to space-separated here to mwke it easier to loop over them in ifup
+# Ditto for bonding options
+parsebond() {
+    local v=${1}:
+    set --
+    while [ -n "$v" ]; do
+        set -- "$@" "${v%%:*}"
+        v=${v#*:}
+    done
+
+    unset bondname bondslaves bondoptions
+    case $# in
+    0)  bondname=bond0; bondslaves="eth0 eth1" ;;
+    1)  bondname=$1; bondslaves="eth0 eth1" ;;
+    2)  bondname=$1; bondslaves=$(echo $2|tr "," " ") ;;
+    3)  bondname=$1; bondslaves=$(echo $2|tr "," " "); bondoptions=$(echo $3|tr "," " ") ;;
+    *)  die "bond= requires zero to four parameters" ;;
+    esac
+}
+
+unset bondname bondslaves bondoptions
+
+# Parse bond for bondname, bondslaves, bondmode and bondoptions
+if getarg bond >/dev/null; then
+    # Read bond= parameters if they exist
+    bond="$(getarg bond=)"
+    if [ ! "$bond" = "bond" ]; then 
+        parsebond "$(getarg bond=)"
+    fi
+    # Simple default bond
+    if [ -z "$bondname" ]; then
+        bondname=bond0
+        bondslaves="eth0 eth1"
+    fi
+    # Make it suitable for initscripts export
+    bondoptions=$(echo $bondoptions|tr ";" ",")
+    echo "bondname=$bondname" > /tmp/bond.info
+    echo "bondslaves=\"$bondslaves\"" >> /tmp/bond.info
+    echo "bondoptions=\"$bondoptions\"" >> /tmp/bond.info
+    return
+fi
diff -urNp dracut-005.orig/modules.d/40network/parse-bridge.sh dracut-005/modules.d/40network/parse-bridge.sh
--- dracut-005.orig/modules.d/40network/parse-bridge.sh	2010-03-19 17:35:47.000000000 +0100
+++ dracut-005/modules.d/40network/parse-bridge.sh	2010-10-13 14:50:21.312268720 +0200
@@ -4,6 +4,7 @@
 #	bridge=<bridgename>:<ethname>
 #
 #	bridge without parameters assumes bridge=br0:eth0
+#	if bonding is enabled, then $bondname will be used instead of 'eth0'
 #
 
 # return if bridge already parsed
@@ -26,7 +27,7 @@ parsebridge() {
 
     unset bridgename ethname
     case $# in
-    0)  bridgename=br0; ethname=eth0 ;;
+    0)  bridgename=br0; ethname=$iface ;;
     1)  die "bridge= requires two parameters" ;;
     2)  bridgename=$1; ethname=$2 ;;
     *)  die "bridge= requires two parameters" ;;
@@ -35,6 +36,14 @@ parsebridge() {
 
 unset bridgename ethname
 
+iface=eth0
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+    if [ -n "$bondname" ] ; then
+        iface=$bondname
+    fi
+fi
+
 # Parse bridge for bridgename and ethname
 if getarg bridge >/dev/null; then
     # Read bridge= parameters if they exist
@@ -45,7 +54,7 @@ if getarg bridge >/dev/null; then
     # Simple default bridge
     if [ -z "$bridgename" ]; then
         bridgename=br0
-        ethname=eth0
+        ethname=$iface
     fi
     echo "bridgename=$bridgename" > /tmp/bridge.info
     echo "ethname=$ethname" >> /tmp/bridge.info
diff -urNp dracut-005.orig/modules.d/45ifcfg/write-ifcfg.sh dracut-005/modules.d/45ifcfg/write-ifcfg.sh
--- dracut-005.orig/modules.d/45ifcfg/write-ifcfg.sh	2010-03-19 17:35:47.000000000 +0100
+++ dracut-005/modules.d/45ifcfg/write-ifcfg.sh	2010-10-14 16:12:26.490314021 +0200
@@ -7,12 +7,25 @@ udevadm settle --timeout=30
 
 read IFACES < /tmp/net.ifaces
 
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+fi
+
+if [ -e /tmp/bridge.info ]; then
+    . /tmp/bridge.info
+fi
+
+mkdir -p /tmp/ifcfg/
+
 for netif in $IFACES ; do
-    mkdir -p /tmp/ifcfg/
     # bridge?
     unset bridge
+    unset bond
     if [ "$netif" = "$bridgename" ]; then
         bridge=yes
+    elif [ "$netif" = "$bondname" ]; then
+    # $netif can't be bridge and bond at the same time
+        bond=yes
     fi
     cat /sys/class/net/$netif/address > /tmp/net.$netif.hwaddr
     {
@@ -35,29 +48,80 @@ for netif in $IFACES ; do
     } > /tmp/ifcfg/ifcfg-$netif
 
     # bridge needs different things written to ifcfg
-    if [ -z "$bridge" ]; then
+    if [ -z "$bridge" ] && if [ -z "$bond" ]; then
         # standard interface
-	{
+        {
             echo "HWADDR=$(cat /sys/class/net/$netif/address)"
             echo "TYPE=Ethernet"
             echo "NAME=\"Boot Disk\"" 
-	} >> /tmp/ifcfg/ifcfg-$netif
-    else
+        } >> /tmp/ifcfg/ifcfg-$netif
+    fi
+
+    if [ -n "$bond" ] ; then
+        # bond interface
+        {
+            # This variable is an indicator of a bond interface for initscripts
+            echo "BONDING_OPTS=\"$bondoptions\""
+            echo "NAME=\"Boot Disk\""
+        } >> /tmp/ifcfg/ifcfg-$netif
+
+        for slave in $bondslaves ; do
+            # write separate ifcfg file for the raw eth interface
+            {
+                echo "DEVICE=$slave"
+                echo "TYPE=Ethernet"
+                echo "ONBOOT=yes"
+                echo "NETBOOT=yes"
+                echo "HWADDR=$(cat /sys/class/net/$slave/address)"
+                echo "SLAVE=yes"
+                echo "MASTER=$netif"
+                echo "NAME=$slave"
+            } >> /tmp/ifcfg/ifcfg-$slave
+        done
+    fi
+
+    if [ -n "$bridge" ] ; then
         # bridge
 	{
 	    echo "TYPE=Bridge"
             echo "NAME=\"Boot Disk\"" 
 	} >> /tmp/ifcfg/ifcfg-$netif
-        # write separate ifcfg file for the raw eth interface
-	{
-            echo "DEVICE=$ethname"
-            echo "TYPE=Ethernet"
-            echo "ONBOOT=yes"
-            echo "NETBOOT=yes"
-            echo "HWADDR=$(cat /sys/class/net/$ethname/address)"
-            echo "BRIDGE=$netif"
-            echo "NAME=$ethname" 
-	} >> /tmp/ifcfg/ifcfg-$ethname
+        if [ "$ethname" = "$bondname" ] ; then
+            {
+                # This variable is an indicator of a bond interface for initscripts
+                echo "DEVICE=$bondname"
+                echo "ONBOOT=yes"
+                echo "NETBOOT=yes"
+                echo "BONDING_OPTS=\"$bondoptions\""
+                echo "BRIDGE=$netif"
+                echo "NAME=\"$bondname\"" 
+            } >> /tmp/ifcfg/ifcfg-$bondname
+            for slave in $bondslaves ; do
+                # write separate ifcfg file for the raw eth interface
+                # yes, duplicated code at this moment
+                {
+                    echo "DEVICE=$slave"
+                    echo "TYPE=Ethernet"
+                    echo "ONBOOT=yes"
+                    echo "NETBOOT=yes"
+                    echo "HWADDR=$(cat /sys/class/net/$slave/address)"
+                    echo "SLAVE=yes"
+                    echo "MASTER=$bondname"
+                    echo "NAME=$slave"
+                } >> /tmp/ifcfg/ifcfg-$slave
+            done
+        else
+            # write separate ifcfg file for the raw eth interface
+            {
+                echo "DEVICE=$ethname"
+                echo "TYPE=Ethernet"
+                echo "ONBOOT=yes"
+                echo "NETBOOT=yes"
+                echo "HWADDR=$(cat /sys/class/net/$ethname/address)"
+                echo "BRIDGE=$netif"
+                echo "NAME=$ethname" 
+            } >> /tmp/ifcfg/ifcfg-$ethname
+        fi
     fi
 done
 

Re: [RFC] [PATCH] Bonding support for dracut

[Harald Hoyer]

On 10/18/2010 02:04 PM, Vladislav Bogdanov wrote:
> Hi all,
>
> I attach patch for bonding support in dracut.
> It is against 005 (developed on fedora 13 version).
> No documentation yet.
> (partially) Tested to work correctly with bond0 alone and bridge on top
> of bond0.
>
> Comments are welcome,
>
> Best,
> Vladislav

Please patch against the git version...

$ git clone git://dracut.git.sourceforge.net/gitroot/dracut/dracut

http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut

Re: [RFC] [PATCH] Bonding support for dracut

[Vladislav Bogdanov]

[-- Attachment #1: Type: text/plain, Size: 581 bytes --]

18.10.2010 16:06, Harald Hoyer wrote:
> On 10/18/2010 02:04 PM, Vladislav Bogdanov wrote:
>> Hi all,
>>
>> I attach patch for bonding support in dracut.
>> It is against 005 (developed on fedora 13 version).
>> No documentation yet.
>> (partially) Tested to work correctly with bond0 alone and bridge on top
>> of bond0.
>>
>> Comments are welcome,
>>
>> Best,
>> Vladislav
> 
> Please patch against the git version...
> 
> $ git clone git://dracut.git.sourceforge.net/gitroot/dracut/dracut
> 
> http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut

This should be it.

[-- Attachment #2: dracut-bonding-support.patch --]
[-- Type: text/x-patch, Size: 12907 bytes --]

diff --git a/modules.d/40network/check b/modules.d/40network/check
index 26b56b3..f575bd9 100755
--- a/modules.d/40network/check
+++ b/modules.d/40network/check
@@ -15,7 +15,7 @@ for program in ip arping; do
         exit 1
     fi
 done
-for program in dhclient brctl; do
+for program in dhclient brctl ifenslave tr; do
     if ! type -P $program >/dev/null; then
         dwarning "Could not find program \"$program\" it might be required by network." 
     fi
diff --git a/modules.d/40network/ifup b/modules.d/40network/ifup
index 5cd6fc5..73e7984 100755
--- a/modules.d/40network/ifup
+++ b/modules.d/40network/ifup
@@ -92,11 +92,25 @@ exec >>/dev/initlog.pipe 2>>/dev/initlog.pipe
 # $netif reads easier than $1
 netif=$1
 
+# enslave this interface to bond?
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+    for slave in $bondslaves ; do
+        if [ "$netif" = "$slave" ] ; then
+            netif=$bondname
+        fi
+    done
+fi
+
 # bridge this interface?
 if [ -e /tmp/bridge.info ]; then
     . /tmp/bridge.info
     if [ "$netif" = "$ethname" ]; then
-        netif="$bridgename"
+        if [ "$netif" = "$bondname" ] && [ -n "$DO_BOND_SETUP" ] ; then
+            : # We need to really setup bond (recursive call)
+        else
+            netif="$bridgename"
+        fi
     fi
 fi
 
@@ -115,11 +129,62 @@ if [ "$netif" = "lo" ] ; then
     exit 0
 fi
 
+# start bond if needed
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+
+    if [ "$netif" = "$bondname" ] && [ ! -e /tmp/net.$bondname.up ] ; then # We are master bond device
+        modprobe bonding
+        ip link set $netif down
+
+        # Stolen from ifup-eth
+        # add the bits to setup driver parameters here
+        for arg in $bondoptions ; do
+            key=${arg%%=*};
+            value=${arg##*=};
+            # %{value:0:1} is replaced with non-bash specific construct
+            if [ "${key}" = "arp_ip_target" -a "${#value}" != "0" -a "+${value%%+*}" != "+" ]; then
+                OLDIFS=$IFS;
+                IFS=',';
+                for arp_ip in $value; do
+                    echo +$arp_ip > /sys/class/net/${netif}/bonding/$key
+                done
+                IFS=$OLDIFS;
+            else
+                echo $value > /sys/class/net/${netif}/bonding/$key
+            fi
+        done
+
+        ip link set $netif up
+
+        for slave in $bondslaves ; do
+            ip link set $slave down
+            ifenslave $bondname $slave
+            ip link set $slave up
+            wait_for_if_up $slave
+        done
+
+        # add the bits to setup the needed post enslavement parameters
+        for arg in $BONDING_OPTS ; do
+            key=${arg%%=*};
+            value=${arg##*=};
+            if [ "${key}" = "primary" ]; then
+                echo $value > /sys/class/net/${netif}/bonding/$key
+            fi
+        done
+    fi
+fi
+
+
 # XXX need error handling like dhclient-script
 
 # start bridge if necessary
 if [ "$netif" = "$bridgename" ] && [ ! -e /tmp/net.$bridgename.up ]; then
-    ip link set $ethname up
+    if [ "$ethname" = "$bondname" ] ; then
+        DO_BOND_SETUP=yes /sbin/ifup $bondname
+    else
+        ip link set $ethname up
+    fi
     wait_for_if_up $ethname
     # Create bridge and add eth to bridge
     brctl addbr $bridgename
diff --git a/modules.d/40network/install b/modules.d/40network/install
index a95ba2a..b22cc96 100755
--- a/modules.d/40network/install
+++ b/modules.d/40network/install
@@ -1,7 +1,7 @@
 #!/bin/bash
 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
 # ex: ts=8 sw=4 sts=4 et filetype=sh
-dracut_install ip dhclient brctl arping
+dracut_install ip dhclient brctl arping ifenslave tr
 inst "$moddir/ifup" "/sbin/ifup"
 inst "$moddir/netroot" "/sbin/netroot"
 inst "$moddir/dhclient-script" "/sbin/dhclient-script"
@@ -10,6 +10,7 @@ inst_hook pre-udev 50 "$moddir/ifname-genrules.sh"
 inst_hook pre-udev 60 "$moddir/net-genrules.sh"
 inst_hook cmdline 91 "$moddir/dhcp-root.sh"
 inst_hook cmdline 99 "$moddir/parse-ip-opts.sh"
+inst_hook cmdline 97 "$moddir/parse-bond.sh"
 inst_hook cmdline 98 "$moddir/parse-bridge.sh"
 inst_hook cmdline 99 "$moddir/parse-ifname.sh"
 inst_hook pre-pivot 10 "$moddir/kill-dhclient.sh"
diff --git a/modules.d/40network/installkernel b/modules.d/40network/installkernel
index 1c9ce7d..c5944ab 100755
--- a/modules.d/40network/installkernel
+++ b/modules.d/40network/installkernel
@@ -18,3 +18,5 @@ instmods ecb arc4
 # bridge modules
 instmods bridge stp llc
 instmods ipv6
+# bonding
+instmods bonding
diff --git a/modules.d/40network/net-genrules.sh b/modules.d/40network/net-genrules.sh
index f8e6056..d24a865 100755
--- a/modules.d/40network/net-genrules.sh
+++ b/modules.d/40network/net-genrules.sh
@@ -24,6 +24,13 @@ fix_bootif() {
         IFACES=$ethname
     fi
 
+    # bond: attempt only the defined interface (override bridge defines)
+    if [ -e /tmp/bond.info ]; then
+        . /tmp/bond.info
+        # It is enough to fire up only one
+        IFACES=${bondslaves%% *}
+    fi
+
     # BOOTIF says everything, use only that one
     BOOTIF=$(getarg 'BOOTIF=')
     if [ -n "$BOOTIF" ] ; then
diff --git a/modules.d/40network/parse-bond.sh b/modules.d/40network/parse-bond.sh
new file mode 100755
index 0000000..5c21bb8
--- /dev/null
+++ b/modules.d/40network/parse-bond.sh
@@ -0,0 +1,63 @@
+#!/bin/sh
+#
+# Format:
+#       bond=<bondname>[:<bondslaves>:[:<options>]]
+#
+#       bondslaves is a comma-separated list of physical (ethernet) interfaces
+#       options is a comma-separated list on bonding options (modinfo bonding for details) in format compatible with initscripts
+#       if options include multi-valued arp_ip_target option, then its values should be separated by semicolon.
+#
+#       bond without parameters assumes bond=bond0:eth0,eth1:mode=balance-rr
+#
+
+# return if bond already parsed
+[ -n "$bondname" ] && return
+
+# Check if bond parameter is valid 
+if getarg bond= >/dev/null ; then
+    if [ -z "$netroot" ] ; then
+        die "No netboot configured, bond is invalid"
+    fi
+fi
+
+# We translate list of slaves to space-separated here to mwke it easier to loop over them in ifup
+# Ditto for bonding options
+parsebond() {
+    local v=${1}:
+    set --
+    while [ -n "$v" ]; do
+        set -- "$@" "${v%%:*}"
+        v=${v#*:}
+    done
+
+    unset bondname bondslaves bondoptions
+    case $# in
+    0)  bondname=bond0; bondslaves="eth0 eth1" ;;
+    1)  bondname=$1; bondslaves="eth0 eth1" ;;
+    2)  bondname=$1; bondslaves=$(echo $2|tr "," " ") ;;
+    3)  bondname=$1; bondslaves=$(echo $2|tr "," " "); bondoptions=$(echo $3|tr "," " ") ;;
+    *)  die "bond= requires zero to four parameters" ;;
+    esac
+}
+
+unset bondname bondslaves bondoptions
+
+# Parse bond for bondname, bondslaves, bondmode and bondoptions
+if getarg bond >/dev/null; then
+    # Read bond= parameters if they exist
+    bond="$(getarg bond=)"
+    if [ ! "$bond" = "bond" ]; then 
+        parsebond "$(getarg bond=)"
+    fi
+    # Simple default bond
+    if [ -z "$bondname" ]; then
+        bondname=bond0
+        bondslaves="eth0 eth1"
+    fi
+    # Make it suitable for initscripts export
+    bondoptions=$(echo $bondoptions|tr ";" ",")
+    echo "bondname=$bondname" > /tmp/bond.info
+    echo "bondslaves=\"$bondslaves\"" >> /tmp/bond.info
+    echo "bondoptions=\"$bondoptions\"" >> /tmp/bond.info
+    return
+fi
diff --git a/modules.d/40network/parse-bridge.sh b/modules.d/40network/parse-bridge.sh
index 984192f..92a6a33 100755
--- a/modules.d/40network/parse-bridge.sh
+++ b/modules.d/40network/parse-bridge.sh
@@ -28,7 +28,7 @@ parsebridge() {
 
     unset bridgename ethname
     case $# in
-        0)  bridgename=br0; ethname=eth0 ;;
+        0)  bridgename=br0; ethname=$iface ;;
         1)  die "bridge= requires two parameters" ;;
         2)  bridgename=$1; ethname=$2 ;;
         *)  die "bridge= requires two parameters" ;;
@@ -37,6 +37,14 @@ parsebridge() {
 
 unset bridgename ethname
 
+iface=eth0
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+    if [ -n "$bondname" ] ; then
+        iface=$bondname
+    fi
+fi
+
 # Parse bridge for bridgename and ethname
 if getarg bridge >/dev/null; then
     # Read bridge= parameters if they exist
@@ -47,7 +55,7 @@ if getarg bridge >/dev/null; then
     # Simple default bridge
     if [ -z "$bridgename" ]; then
         bridgename=br0
-        ethname=eth0
+        ethname=$iface
     fi
     echo "bridgename=$bridgename" > /tmp/bridge.info
     echo "ethname=$ethname" >> /tmp/bridge.info
diff --git a/modules.d/45ifcfg/write-ifcfg.sh b/modules.d/45ifcfg/write-ifcfg.sh
index ac3bd90..968d9f0 100755
--- a/modules.d/45ifcfg/write-ifcfg.sh
+++ b/modules.d/45ifcfg/write-ifcfg.sh
@@ -9,12 +9,25 @@ udevadm settle --timeout=30
 
 read IFACES < /tmp/net.ifaces
 
+if [ -e /tmp/bond.info ]; then
+    . /tmp/bond.info
+fi
+
+if [ -e /tmp/bridge.info ]; then
+    . /tmp/bridge.info
+fi
+
+mkdir -p /tmp/ifcfg/
+
 for netif in $IFACES ; do
-    mkdir -p /tmp/ifcfg/
     # bridge?
     unset bridge
+    unset bond
     if [ "$netif" = "$bridgename" ]; then
         bridge=yes
+    elif [ "$netif" = "$bondname" ]; then
+    # $netif can't be bridge and bond at the same time
+        bond=yes
     fi
     cat /sys/class/net/$netif/address > /tmp/net.$netif.hwaddr
     {
@@ -37,29 +50,84 @@ for netif in $IFACES ; do
     } > /tmp/ifcfg/ifcfg-$netif
 
     # bridge needs different things written to ifcfg
-    if [ -z "$bridge" ]; then
+    if [ -z "$bridge" ] && if [ -z "$bond" ]; then
         # standard interface
         {
             echo "HWADDR=$(cat /sys/class/net/$netif/address)"
             echo "TYPE=Ethernet"
             echo "NAME=\"Boot Disk\"" 
         } >> /tmp/ifcfg/ifcfg-$netif
-    else
+    fi
+
+    if [ -n "$bond" ] ; then
+        # bond interface
+        {
+            # This variable is an indicator of a bond interface for initscripts
+            echo "BONDING_OPTS=\"$bondoptions\""
+            echo "NAME=\"Boot Disk\""
+        } >> /tmp/ifcfg/ifcfg-$netif
+
+        for slave in $bondslaves ; do
+            # write separate ifcfg file for the raw eth interface
+            {
+                echo "# Generated by dracut initrd"
+                echo "DEVICE=$slave"
+                echo "TYPE=Ethernet"
+                echo "ONBOOT=yes"
+                echo "NETBOOT=yes"
+                echo "HWADDR=$(cat /sys/class/net/$slave/address)"
+                echo "SLAVE=yes"
+                echo "MASTER=$netif"
+                echo "NAME=$slave"
+            } >> /tmp/ifcfg/ifcfg-$slave
+        done
+    fi
+
+    if [ -n "$bridge" ] ; then
         # bridge
         {
             echo "TYPE=Bridge"
             echo "NAME=\"Boot Disk\"" 
         } >> /tmp/ifcfg/ifcfg-$netif
-        # write separate ifcfg file for the raw eth interface
-        {
-            echo "DEVICE=$ethname"
-            echo "TYPE=Ethernet"
-            echo "ONBOOT=yes"
-            echo "NETBOOT=yes"
-            echo "HWADDR=$(cat /sys/class/net/$ethname/address)"
-            echo "BRIDGE=$netif"
-            echo "NAME=$ethname" 
-        } >> /tmp/ifcfg/ifcfg-$ethname
+        if [ "$ethname" = "$bondname" ] ; then
+            {
+                # This variable is an indicator of a bond interface for initscripts
+                echo "# Generated by dracut initrd"
+                echo "DEVICE=$bondname"
+                echo "ONBOOT=yes"
+                echo "NETBOOT=yes"
+                echo "BONDING_OPTS=\"$bondoptions\""
+                echo "BRIDGE=$netif"
+                echo "NAME=\"$bondname\"" 
+            } >> /tmp/ifcfg/ifcfg-$bondname
+            for slave in $bondslaves ; do
+                # write separate ifcfg file for the raw eth interface
+                # yes, duplicated code at this moment
+                {
+                    echo "# Generated by dracut initrd"
+                    echo "DEVICE=$slave"
+                    echo "TYPE=Ethernet"
+                    echo "ONBOOT=yes"
+                    echo "NETBOOT=yes"
+                    echo "HWADDR=$(cat /sys/class/net/$slave/address)"
+                    echo "SLAVE=yes"
+                    echo "MASTER=$bondname"
+                    echo "NAME=$slave"
+                } >> /tmp/ifcfg/ifcfg-$slave
+            done
+        else
+            # write separate ifcfg file for the raw eth interface
+            {
+                echo "# Generated by dracut initrd"
+                echo "DEVICE=$ethname"
+                echo "TYPE=Ethernet"
+                echo "ONBOOT=yes"
+                echo "NETBOOT=yes"
+                echo "HWADDR=$(cat /sys/class/net/$ethname/address)"
+                echo "BRIDGE=$netif"
+                echo "NAME=$ethname" 
+            } >> /tmp/ifcfg/ifcfg-$ethname
+        fi
     fi
 done
 

Re: [RFC] [PATCH] Bonding support for dracut

[Harald Hoyer]

On 10/18/2010 03:48 PM, Vladislav Bogdanov wrote:
> 18.10.2010 16:06, Harald Hoyer wrote:
>> On 10/18/2010 02:04 PM, Vladislav Bogdanov wrote:
>>> Hi all,
>>>
>>> I attach patch for bonding support in dracut.
>>> It is against 005 (developed on fedora 13 version).
>>> No documentation yet.
>>> (partially) Tested to work correctly with bond0 alone and bridge on top
>>> of bond0.
>>>
>>> Comments are welcome,
>>>
>>> Best,
>>> Vladislav
>>
>> Please patch against the git version...
>>
>> $ git clone git://dracut.git.sourceforge.net/gitroot/dracut/dracut
>>
>> http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut
>
> This should be it.

Thanks!!

Re: [RFC] [PATCH] Bonding support for dracut

[Harald Hoyer]

On 10/18/2010 03:48 PM, Vladislav Bogdanov wrote:
> 18.10.2010 16:06, Harald Hoyer wrote:
>> On 10/18/2010 02:04 PM, Vladislav Bogdanov wrote:
>>> Hi all,
>>>
>>> I attach patch for bonding support in dracut.
>>> It is against 005 (developed on fedora 13 version).
>>> No documentation yet.
>>> (partially) Tested to work correctly with bond0 alone and bridge on top
>>> of bond0.
>>>
>>> Comments are welcome,
>>>
>>> Best,
>>> Vladislav
>>
>> Please patch against the git version...
>>
>> $ git clone git://dracut.git.sourceforge.net/gitroot/dracut/dracut
>>
>> http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut
>
> This should be it.

pushed
...


http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut;a=commitdiff;h=96fb9c8dd708dfbab9cf6515d9a450abb060e623

Re: [RFC] [PATCH] Bonding support for dracut

[Vladislav Bogdanov]

18.10.2010 17:15, Harald Hoyer wrote:
> On 10/18/2010 03:48 PM, Vladislav Bogdanov wrote:
>> 18.10.2010 16:06, Harald Hoyer wrote:
>>> On 10/18/2010 02:04 PM, Vladislav Bogdanov wrote:
>>>> Hi all,
>>>>
>>>> I attach patch for bonding support in dracut.
>>>> It is against 005 (developed on fedora 13 version).
>>>> No documentation yet.
>>>> (partially) Tested to work correctly with bond0 alone and bridge on top
>>>> of bond0.
>>>>
>>>> Comments are welcome,
>>>>
>>>> Best,
>>>> Vladislav
>>>
>>> Please patch against the git version...
>>>
>>> $ git clone git://dracut.git.sourceforge.net/gitroot/dracut/dracut
>>>
>>> http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut
>>
>> This should be it.
> 
> pushed
> ...
> 
> 
> http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut;a=commitdiff;h=96fb9c8dd708dfbab9cf6515d9a450abb060e623

Ahmmm....
So quick :)
I was ready for a long discussion :)

Some notes:

There is no documentation yet :( and it should not be forgotten to add
it. I generally hate to edit XML by hands. Could someone who operates
some magic XML tools do it?

Also both original patch (against 005) and commit message has a typo (in
head comments):
bond=bond0:eth0,eth1:balance-rr
should be really
bond=bond0:eth0,eth1:mode=balance-rr

Patch against git has this corrected (together with one more typo -
s/DEVICE/netif/)

Or even better third clause (options) should be omitted from that line:
it remained from a revision where I had mode as a separate clause.
Current version leaves all options defaulting to bonding.ko (and
balance-rr is its default mode btw).

One more is a mode of parse-bond.sh which should be 0755 (for consistency?).

And last, this should be tested thoroughly. I only did limited testing -
not all use cases, especially not with default values. It seems to be
correct, but I'm not 100% sure.

Best,
Vladislav

Re: [RFC] [PATCH] Bonding support for dracut

[Harald Hoyer]

On 10/18/2010 04:31 PM, Vladislav Bogdanov wrote:
> 18.10.2010 17:15, Harald Hoyer wrote:
>> On 10/18/2010 03:48 PM, Vladislav Bogdanov wrote:
>>> 18.10.2010 16:06, Harald Hoyer wrote:
>>>> On 10/18/2010 02:04 PM, Vladislav Bogdanov wrote:
>>>>> Hi all,
>>>>>
>>>>> I attach patch for bonding support in dracut.
>>>>> It is against 005 (developed on fedora 13 version).
>>>>> No documentation yet.
>>>>> (partially) Tested to work correctly with bond0 alone and bridge on top
>>>>> of bond0.
>>>>>
>>>>> Comments are welcome,
>>>>>
>>>>> Best,
>>>>> Vladislav
>>>>
>>>> Please patch against the git version...
>>>>
>>>> $ git clone git://dracut.git.sourceforge.net/gitroot/dracut/dracut
>>>>
>>>> http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut
>>>
>>> This should be it.
>>
>> pushed
>> ...
>>
>>
>> http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut;a=commitdiff;h=96fb9c8dd708dfbab9cf6515d9a450abb060e623
>
> Ahmmm....
> So quick :)
> I was ready for a long discussion :)
>
> Some notes:
>
> There is no documentation yet :( and it should not be forgotten to add
> it. I generally hate to edit XML by hands. Could someone who operates
> some magic XML tools do it?

Nice, free, open source xml editor:

http://www.syntext.com/products/serna-free/

>
> Also both original patch (against 005) and commit message has a typo (in
> head comments):
> bond=bond0:eth0,eth1:balance-rr
> should be really
> bond=bond0:eth0,eth1:mode=balance-rr
>
> Patch against git has this corrected (together with one more typo -
> s/DEVICE/netif/)

Hmm, I took dracut-bonding-support.patch and not 
dracut-005-bonding-support.patch... but I might have copied the commit message 
from the wrong patch.

>
> Or even better third clause (options) should be omitted from that line:
> it remained from a revision where I had mode as a separate clause.
> Current version leaves all options defaulting to bonding.ko (and
> balance-rr is its default mode btw).
>
> One more is a mode of parse-bond.sh which should be 0755 (for consistency?).

Already done :)
http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut;a=commitdiff;h=57a49c67275c8ec6b3d85dc70433ffc15aec47e4

>
> And last, this should be tested thoroughly. I only did limited testing -
> not all use cases, especially not with default values. It seems to be
> correct, but I'm not 100% sure.
>
> Best,
> Vladislav

Re: [RFC] [PATCH] Bonding support for dracut

[Vladislav Bogdanov]

[-- Attachment #1: Type: text/plain, Size: 54 bytes --]

Hi,

copy-paste typo fix is attached

Best,
Vladislav

[-- Attachment #2: dracut-bonding-fix.patch --]
[-- Type: text/x-patch, Size: 528 bytes --]

diff --git a/modules.d/45ifcfg/write-ifcfg.sh b/modules.d/45ifcfg/write-ifcfg.sh
index 968d9f0..45fcde2 100755
--- a/modules.d/45ifcfg/write-ifcfg.sh
+++ b/modules.d/45ifcfg/write-ifcfg.sh
@@ -50,7 +50,7 @@ for netif in $IFACES ; do
     } > /tmp/ifcfg/ifcfg-$netif
 
     # bridge needs different things written to ifcfg
-    if [ -z "$bridge" ] && if [ -z "$bond" ]; then
+    if [ -z "$bridge" ] && [ -z "$bond" ]; then
         # standard interface
         {
             echo "HWADDR=$(cat /sys/class/net/$netif/address)"

One more fix (was Re: [RFC] [PATCH] Bonding support for dracut)

[Vladislav Bogdanov]

[-- Attachment #1: Type: text/plain, Size: 61 bytes --]

Hi,

one more patch with fixes is attached.

Best,
Vladislav

[-- Attachment #2: dracut-bonding-support-fixes.patch --]
[-- Type: text/x-patch, Size: 2845 bytes --]

diff --git a/modules.d/45ifcfg/write-ifcfg.sh b/modules.d/45ifcfg/write-ifcfg.sh
index 45fcde2..022467b 100755
--- a/modules.d/45ifcfg/write-ifcfg.sh
+++ b/modules.d/45ifcfg/write-ifcfg.sh
@@ -68,12 +68,13 @@ for netif in $IFACES ; do
         } >> /tmp/ifcfg/ifcfg-$netif
 
         for slave in $bondslaves ; do
+            # Set ONBOOT=no to prevent initscripts from trying to setup already bonded physical interface
             # write separate ifcfg file for the raw eth interface
             {
                 echo "# Generated by dracut initrd"
                 echo "DEVICE=$slave"
                 echo "TYPE=Ethernet"
-                echo "ONBOOT=yes"
+                echo "ONBOOT=no"
                 echo "NETBOOT=yes"
                 echo "HWADDR=$(cat /sys/class/net/$slave/address)"
                 echo "SLAVE=yes"
@@ -91,23 +92,24 @@ for netif in $IFACES ; do
         } >> /tmp/ifcfg/ifcfg-$netif
         if [ "$ethname" = "$bondname" ] ; then
             {
-                # This variable is an indicator of a bond interface for initscripts
+                # Set ONBOOT=no to prevent initscripts from trying to setup already bridged bond interface
                 echo "# Generated by dracut initrd"
                 echo "DEVICE=$bondname"
-                echo "ONBOOT=yes"
+                echo "ONBOOT=no"
                 echo "NETBOOT=yes"
+                # This variable is an indicator of a bond interface for initscripts
                 echo "BONDING_OPTS=\"$bondoptions\""
                 echo "BRIDGE=$netif"
                 echo "NAME=\"$bondname\"" 
             } >> /tmp/ifcfg/ifcfg-$bondname
             for slave in $bondslaves ; do
                 # write separate ifcfg file for the raw eth interface
-                # yes, duplicated code at this moment
+                # Set ONBOOT=no to prevent initscripts from trying to setup already bridged physical interface
                 {
                     echo "# Generated by dracut initrd"
                     echo "DEVICE=$slave"
                     echo "TYPE=Ethernet"
-                    echo "ONBOOT=yes"
+                    echo "ONBOOT=no"
                     echo "NETBOOT=yes"
                     echo "HWADDR=$(cat /sys/class/net/$slave/address)"
                     echo "SLAVE=yes"
@@ -121,11 +123,11 @@ for netif in $IFACES ; do
                 echo "# Generated by dracut initrd"
                 echo "DEVICE=$ethname"
                 echo "TYPE=Ethernet"
-                echo "ONBOOT=yes"
+                echo "ONBOOT=no"
                 echo "NETBOOT=yes"
                 echo "HWADDR=$(cat /sys/class/net/$ethname/address)"
                 echo "BRIDGE=$netif"
-                echo "NAME=$ethname" 
+                echo "NAME=$ethname"
             } >> /tmp/ifcfg/ifcfg-$ethname
         fi
     fi

Re: One more fix (was Re: [RFC] [PATCH] Bonding support for dracut)

[Harald Hoyer]

On 10/19/2010 04:49 PM, Vladislav Bogdanov wrote:
> Hi,
>
> one more patch with fixes is attached.
>
> Best,
> Vladislav

pushed

Re: [RFC] [PATCH] Bonding support for dracut

[Harald Hoyer]

On 10/19/2010 03:54 PM, Vladislav Bogdanov wrote:
> Hi,
>
> copy-paste typo fix is attached
>
> Best,
> Vladislav

pushed