tools/hv/bondvf.sh

   1 #!/bin/bash
   2
   3 # This example script creates bonding network devices based on synthetic NIC
   4 # (the virtual network adapter usually provided by Hyper-V) and the matching
   5 # VF NIC (SRIOV virtual function). So the synthetic NIC and VF NIC can
   6 # function as one network device, and fail over to the synthetic NIC if VF is
   7 # down.
   8 #
   9 # Usage:
  10 # - After configured vSwitch and vNIC with SRIOV, start Linux virtual
  11 #   machine (VM)
  12 # - Run this scripts on the VM. It will create configuration files in
  13 #   distro specific directory.
  14 # - Reboot the VM, so that the bonding config are enabled.
  15 #
  16 # The config files are DHCP by default. You may edit them if you need to change
  17 # to Static IP or change other settings.
  18 #
  19
  20 sysdir=/sys/class/net
  21 netvsc_cls={f8615163-df3e-46c5-913f-f2d2f965ed0e}
  22 bondcnt=0
  23
  24 # Detect Distro
  25 if [ -f /etc/redhat-release ];
  26 then
  27         cfgdir=/etc/sysconfig/network-scripts
  28         distro=redhat
  29 elif grep -q 'Ubuntu' /etc/issue
  30 then
  31         cfgdir=/etc/network
  32         distro=ubuntu
  33 elif grep -q 'SUSE' /etc/issue
  34 then
  35         cfgdir=/etc/sysconfig/network
  36         distro=suse
  37 else
  38         echo "Unsupported Distro"
  39         exit 1
  40 fi
  41
  42 echo Detected Distro: $distro, or compatible
  43
  44 # Get a list of ethernet names
  45 list_eth=(`cd $sysdir && ls -d */ | cut -d/ -f1 | grep -v bond`)
  46 eth_cnt=${#list_eth[@]}
  47
  48 echo List of net devices:
  49
  50 # Get the MAC addresses
  51 for (( i=0; i < $eth_cnt; i++ ))
  52 do
  53         list_mac[$i]=`cat $sysdir/${list_eth[$i]}/address`
  54         echo ${list_eth[$i]}, ${list_mac[$i]}
  55 done
  56
  57 # Find NIC with matching MAC
  58 for (( i=0; i < $eth_cnt-1; i++ ))
  59 do
  60         for (( j=i+1; j < $eth_cnt; j++ ))
  61         do
  62                 if [ "${list_mac[$i]}" = "${list_mac[$j]}" ]
  63                 then
  64                         list_match[$i]=${list_eth[$j]}
  65                         break
  66                 fi
  67         done
  68 done
  69
  70 function create_eth_cfg_redhat {
  71         local fn=$cfgdir/ifcfg-$1
  72
  73         rm -f $fn
  74         echo DEVICE=$1 >>$fn
  75         echo TYPE=Ethernet >>$fn
  76         echo BOOTPROTO=none >>$fn
  77         echo UUID=`uuidgen` >>$fn
  78         echo ONBOOT=yes >>$fn
  79         echo PEERDNS=yes >>$fn
  80         echo IPV6INIT=yes >>$fn
  81         echo MASTER=$2 >>$fn
  82         echo SLAVE=yes >>$fn
  83 }
  84
  85 function create_eth_cfg_pri_redhat {
  86         create_eth_cfg_redhat $1 $2
  87 }
  88
  89 function create_bond_cfg_redhat {
  90         local fn=$cfgdir/ifcfg-$1
  91
  92         rm -f $fn
  93         echo DEVICE=$1 >>$fn
  94         echo TYPE=Bond >>$fn
  95         echo BOOTPROTO=dhcp >>$fn
  96         echo UUID=`uuidgen` >>$fn
  97         echo ONBOOT=yes >>$fn
  98         echo PEERDNS=yes >>$fn
  99         echo IPV6INIT=yes >>$fn
 100         echo BONDING_MASTER=yes >>$fn
 101         echo BONDING_OPTS=\"mode=active-backup miimon=100 primary=$2\" >>$fn
 102 }
 103
 104 function del_eth_cfg_ubuntu {
 105         local mainfn=$cfgdir/interfaces
 106         local fnlist=( $mainfn )
 107
 108         local dirlist=(`awk '/^[ \t]*source/{print $2}' $mainfn`)
 109
 110         local i
 111         for i in "${dirlist[@]}"
 112         do
 113                 fnlist+=(`ls $i 2>/dev/null`)
 114         done
 115
 116         local tmpfl=$(mktemp)
 117
 118         local nic_start='^[ \t]*(auto|iface|mapping|allow-.*)[ \t]+'$1
 119         local nic_end='^[ \t]*(auto|iface|mapping|allow-.*|source)'
 120
 121         local fn
 122         for fn in "${fnlist[@]}"
 123         do
 124                 awk "/$nic_end/{x=0} x{next} /$nic_start/{x=1;next} 1" \
 125                         $fn >$tmpfl
 126
 127                 cp $tmpfl $fn
 128         done
 129
 130         rm $tmpfl
 131 }
 132
 133 function create_eth_cfg_ubuntu {
 134         local fn=$cfgdir/interfaces
 135
 136         del_eth_cfg_ubuntu $1
 137         echo $'\n'auto $1 >>$fn
 138         echo iface $1 inet manual >>$fn
 139         echo bond-master $2 >>$fn
 140 }
 141
 142 function create_eth_cfg_pri_ubuntu {
 143         local fn=$cfgdir/interfaces
 144
 145         del_eth_cfg_ubuntu $1
 146         echo $'\n'allow-hotplug $1 >>$fn
 147         echo iface $1 inet manual >>$fn
 148         echo bond-master $2 >>$fn
 149         echo bond-primary $1 >>$fn
 150 }
 151
 152 function create_bond_cfg_ubuntu {
 153         local fn=$cfgdir/interfaces
 154
 155         del_eth_cfg_ubuntu $1
 156
 157         echo $'\n'auto $1 >>$fn
 158         echo iface $1 inet dhcp >>$fn
 159         echo bond-mode active-backup >>$fn
 160         echo bond-miimon 100 >>$fn
 161         echo bond-slaves none >>$fn
 162 }
 163
 164 function create_eth_cfg_suse {
 165         local fn=$cfgdir/ifcfg-$1
 166
 167         rm -f $fn
 168         echo BOOTPROTO=none >>$fn
 169         echo STARTMODE=auto >>$fn
 170 }
 171
 172 function create_eth_cfg_pri_suse {
 173         local fn=$cfgdir/ifcfg-$1
 174
 175         rm -f $fn
 176         echo BOOTPROTO=none >>$fn
 177         echo STARTMODE=hotplug >>$fn
 178 }
 179
 180 function create_bond_cfg_suse {
 181         local fn=$cfgdir/ifcfg-$1
 182
 183         rm -f $fn
 184         echo BOOTPROTO=dhcp >>$fn
 185         echo STARTMODE=auto >>$fn
 186         echo BONDING_MASTER=yes >>$fn
 187         echo BONDING_SLAVE_0=$2 >>$fn
 188         echo BONDING_SLAVE_1=$3 >>$fn
 189         echo BONDING_MODULE_OPTS=\'mode=active-backup miimon=100 primary=$2\' >>$fn
 190 }
 191
 192 function create_bond {
 193         local bondname=bond$bondcnt
 194         local primary
 195         local secondary
 196
 197         local class_id1=`cat $sysdir/$1/device/class_id 2>/dev/null`
 198         local class_id2=`cat $sysdir/$2/device/class_id 2>/dev/null`
 199
 200         if [ "$class_id1" = "$netvsc_cls" ]
 201         then
 202                 primary=$2
 203                 secondary=$1
 204         elif [ "$class_id2" = "$netvsc_cls" ]
 205         then
 206                 primary=$1
 207                 secondary=$2
 208         else
 209                 return 0
 210         fi
 211
 212         echo $'\nBond name:' $bondname
 213
 214         echo configuring $primary
 215         create_eth_cfg_pri_$distro $primary $bondname
 216
 217         echo configuring $secondary
 218         create_eth_cfg_$distro $secondary $bondname
 219
 220         echo creating: $bondname with primary slave: $primary
 221         create_bond_cfg_$distro $bondname $primary $secondary
 222
 223         let bondcnt=bondcnt+1
 224 }
 225
 226 for (( i=0; i < $eth_cnt-1; i++ ))
 227 do
 228         if [ -n "${list_match[$i]}" ]
 229         then
 230                 create_bond ${list_eth[$i]} ${list_match[$i]}
 231         fi
 232 done