xenserver/etc_init.d_vswitch

   1 #!/bin/bash
   2 #
   3 # vswitch
   4 #
   5 # chkconfig: 2345 09 91
   6 # description: Manage vswitch kernel modules and user-space daemon
   7
   8 # Copyright (C) 2009 Nicira Networks, Inc.
   9 #
  10 # Licensed under the Apache License, Version 2.0 (the "License");
  11 # you may not use this file except in compliance with the License.
  12 # You may obtain a copy of the License at:
  13 #
  14 #     http://www.apache.org/licenses/LICENSE-2.0
  15 #
  16 # Unless required by applicable law or agreed to in writing, software
  17 # distributed under the License is distributed on an "AS IS" BASIS,
  18 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  19 # See the License for the specific language governing permissions and
  20 # limitations under the License.
  21
  22 . /etc/init.d/functions
  23
  24 test -e /etc/sysconfig/vswitch && . /etc/sysconfig/vswitch
  25
  26 # General config variables in /etc/sysconfig/vswitch
  27 : ${ENABLE_BRCOMPAT:=y}
  28 : ${ENABLE_FAKE_PROC_NET:=y}
  29 : ${FORCE_COREFILES:=y}
  30
  31 # Config variables specific to ovs-vswitchd
  32 : ${VSWITCHD_CONF:=/etc/ovs-vswitchd.conf}
  33 : ${VSWITCHD_PIDFILE:=/var/run/ovs-vswitchd.pid}
  34 : ${VSWITCHD_RUN_DIR:=/var/xen/vswitch}
  35 : ${VSWITCHD_PRIORITY:=-10}
  36 : ${VSWITCHD_LOGFILE:=/var/log/ovs-vswitchd.log}
  37 : ${VSWITCHD_FILE_LOGLEVEL:=INFO}
  38 : ${VSWITCHD_SYSLOG_LOGLEVEL:=ERR}
  39 : ${VSWITCHD_MEMLEAK_LOGFILE:=}
  40 : ${VSWITCHD_STRACE_LOG:=}
  41 : ${VSWITCHD_STRACE_OPT:=}
  42 : ${VSWITCHD_VALGRIND_LOG:=}
  43 : ${VSWITCHD_VALGRIND_OPT:=}
  44
  45 # Config variables specific to ovs-brcompatd
  46 : ${BRCOMPATD_PIDFILE:=/var/run/ovs-brcompatd.pid}
  47 : ${BRCOMPATD_RUN_DIR:=/var/xen/vswitch}
  48 : ${BRCOMPATD_PRIORITY:=-10}
  49 : ${BRCOMPATD_LOGFILE:=/var/log/ovs-brcompatd.log}
  50 : ${BRCOMPATD_FILE_LOGLEVEL:=INFO}
  51 : ${BRCOMPATD_SYSLOG_LOGLEVEL:=ERR}
  52 : ${BRCOMPATD_MEMLEAK_LOGFILE:=}
  53 : ${BRCOMPATD_STRACE_LOG:=}
  54 : ${BRCOMPATD_STRACE_OPT:=}
  55 : ${BRCOMPATD_VALGRIND_LOG:=}
  56 : ${BRCOMPATD_VALGRIND_OPT:=}
  57
  58 # Full paths to executables & modules
  59 vswitchd="/usr/sbin/ovs-vswitchd"
  60 brcompatd="/usr/sbin/ovs-brcompatd"
  61 dpctl="/usr/bin/ovs-dpctl"
  62 appctl="/usr/bin/ovs-appctl"
  63 ofctl="/usr/bin/ovs-ofctl"
  64
  65
  66 if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
  67     if [ "$ENABLE_BRCOMPAT" != "y" ]; then
  68         warning "FAKE_PROC_NET required BRCOMPAT which was disabled.  Force enabling."
  69         ENABLE_BRCOMPAT="y"
  70     fi
  71 fi
  72
  73 function dp_list {
  74     "$dpctl" show | grep '^dp[0-9]\+:' | cut -d':' -f 1
  75 }
  76
  77 function turn_on_corefiles {
  78     ulimit -Sc 67108864
  79 }
  80
  81 function remove_all_dp {
  82     for dp in $(dp_list); do
  83         action "Removing datapath: $dp" "$dpctl" del-dp "$dp"
  84     done
  85 }
  86
  87 function insert_modules_if_required {
  88     if ! lsmod | grep -q "openvswitch_mod"; then
  89         action "Inserting llc module" modprobe llc
  90         action "Inserting openvswitch module" modprobe openvswitch_mod
  91     fi
  92     if [ -n "$BRCOMPATD_PIDFILE" ] && ! lsmod | grep -q "brcompat_mod"; then
  93         action "Inserting brcompat module" modprobe brcompat_mod
  94     fi
  95 }
  96
  97 function remove_modules {
  98     if lsmod | grep -q "brcompat_mod"; then
  99         action "Removing brcompat module" rmmod brcompat_mod.ko
 100     fi
 101     if lsmod | grep -q "openvswitch_mod"; then
 102         action "Removing openvswitch module" rmmod openvswitch_mod.ko
 103     fi
 104 }
 105
 106 function reload_vswitchd {
 107     if [ -f "$VSWITCHD_PIDFILE" ]; then
 108         "$appctl" --target=/var/run/ovs-vswitchd.`cat $VSWITCHD_PIDFILE`.ctl vswitchd/reload
 109     fi
 110 }
 111
 112 function reload_brcompatd {
 113     if [ -f "$BRCOMPATD_PIDFILE" ]; then
 114         "$appctl" --target=/var/run/ovs-brcompatd.`cat $BRCOMPATD_PIDFILE`.ctl vlog/reopen
 115     fi
 116 }
 117
 118 function start_vswitchd {
 119     local syslog_opt="-vANY:SYSLOG:${VSWITCHD_SYSLOG_LOGLEVEL}"
 120     local logfile_file_opt=""
 121     local logfile_level_opt=""
 122     if [ ! -d "$VSWITCHD_RUN_DIR" ]; then
 123         mkdir -p "$VSWITCHD_RUN_DIR"
 124     fi
 125     cd "$VSWITCHD_RUN_DIR"
 126     if [ -n "$VSWITCHD_FILE_LOGLEVEL" ]; then
 127         logfile_level_opt="-vANY:FILE:${VSWITCHD_FILE_LOGLEVEL}"
 128         logfile_file_opt="--log-file=$VSWITCHD_LOGFILE"
 129     fi
 130     local leak_opt=""
 131     if [ -n "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 132         leak_opt="--check-leaks=$VSWITCHD_MEMLEAK_LOGFILE"
 133         if [ -e "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 134             mv "$VSWITCHD_MEMLEAK_LOGFILE" "$VSWITCHD_MEMLEAK_LOGFILE.prev"
 135         fi
 136     fi
 137     local strace_opt=""
 138     local daemonize="y"
 139     if [ -n "$VSWITCHD_STRACE_LOG" ] && [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 140         printf "Can not start with both VALGRIND and STRACE\n"
 141         exit 1
 142     fi
 143     if [ -n "$VSWITCHD_STRACE_LOG" ]; then
 144         strace_opt="strace -o $VSWITCHD_STRACE_LOG $VSWITCHD_STRACE_OPT"
 145         daemonize="n"
 146     fi
 147     if [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 148         valgrind_opt="valgrind --log-file=$VSWITCHD_VALGRIND_LOG $VSWITCHD_VALGRIND_OPT"
 149         daemonize="n"
 150     fi
 151     local fake_proc_net_opt=""
 152     if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
 153         fake_proc_net_opt="--fake-proc-net"
 154     fi
 155     if [ "$daemonize" != "y" ]; then
 156         # Start in background and force a "success" message
 157         action "Starting ovs-vswitchd ($strace_opt$valgrind_opt)" true
 158         (nice -n "$VSWITCHD_PRIORITY" $strace_opt $valgrind_opt "$vswitchd" --pidfile="$VSWITCHD_PIDFILE" --detach --no-chdir $fake_proc_net_opt -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_CONF") &
 159     else
 160         action "Starting ovs-vswitchd" nice -n "$VSWITCHD_PRIORITY" "$vswitchd" --pidfile="$VSWITCHD_PIDFILE" --detach --no-chdir $fake_proc_net_opt -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_CONF"
 161     fi
 162 }
 163
 164 function start_brcompatd {
 165     local syslog_opt="-vANY:SYSLOG:${BRCOMPATD_SYSLOG_LOGLEVEL}"
 166     local logfile_file_opt=""
 167     local logfile_level_opt=""
 168     if [ -d "$BRCOMPATD_RUN_DIR" ]; then
 169         mkdir -p "$BRCOMPATD_RUN_DIR"
 170     fi
 171     cd "$BRCOMPATD_RUN_DIR"
 172     if [ -n "$BRCOMPATD_FILE_LOGLEVEL" ]; then
 173         logfile_level_opt="-vANY:FILE:${BRCOMPATD_FILE_LOGLEVEL}"
 174         logfile_file_opt="--log-file=$BRCOMPATD_LOGFILE"
 175     fi
 176     local leak_opt=""
 177     if [ -n "$BRCOMPATD_MEMLEAK_LOG" ]; then
 178         leak_opt="--check-leaks=$BRCOMPATD_MEMLEAK_LOGFILE"
 179         if [ -e "$BRCOMPATD_MEMLEAK_LOGFILE" ]; then
 180             mv "$BRCOMPATD_MEMLEAK_LOGFILE" "$BRCOMPATD_MEMLEAK_LOGFILE.prev"
 181         fi
 182     fi
 183     local strace_opt=""
 184     local daemonize="y"
 185     if [ -n "$BRCOMPATD_STRACE_LOG" ] && [ -n "$BRCOMPATD_VALGRIND_LOG" ]; then
 186         printf "Can not start with both VALGRIND and STRACE\n"
 187         exit 1
 188     fi
 189     if [ -n "$BRCOMPATD_STRACE_LOG" ]; then
 190         strace_opt="strace -o $BRCOMPATD_STRACE_LOG $BRCOMPATD_STRACE_OPT"
 191         daemonize="n"
 192     fi
 193     if [ -n "$VALGRIND_LOG" ]; then
 194         valgrind_opt="valgrind --log-file=$BRCOMPATD_VALGRIND_LOG $BRCOMPATD_VALGRIND_OPT"
 195         daemonize="n"
 196     fi
 197     appctl_cmd="$appctl --target=/var/run/ovs-vswitchd.\`cat $VSWITCHD_PIDFILE\`.ctl %s"
 198     if [ "$daemonize" != "y" ]; then
 199         # Start in background and force a "success" message
 200         action "Starting ovs-brcompatd ($strace_opt$valgrind_opt)" true
 201         (nice -n "$VSWITCHD_PRIORITY" $strace_opt $valgrind_opt "$brcompatd"--no-chdir --appctl-command="$appctl_cmd" --pidfile=$BRCOMPATD_PIDFILE -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_CONF") &
 202     else
 203         action "Starting ovs-brcompatd" nice -n "$BRCOMPATD_PRIORITY" $strace_opt $valgrind_opt "$brcompatd" --no-chdir --appctl-command="$appctl_cmd" --pidfile=$BRCOMPATD_PIDFILE --detach -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_CONF"
 204     fi
 205 }
 206
 207 function stop_vswitchd {
 208     if [ -f "$VSWITCHD_PIDFILE" ]; then
 209         local pid=$(cat "$VSWITCHD_PIDFILE")
 210         action "Killing ovs-vswitchd ($pid)" kill -TERM $pid
 211         rm -f "$VSWITCHD_PIDFILE"
 212     fi
 213 }
 214
 215 function stop_brcompatd {
 216     if [ -f "$BRCOMPATD_PIDFILE" ]; then
 217         local pid=$(cat "$BRCOMPATD_PIDFILE")
 218         action "Killing ovs-brcompatd ($pid)" kill -TERM $pid
 219         rm -f "$BRCOMPATD_PIDFILE"
 220     fi
 221 }
 222
 223 function restart_approval {
 224     if test ! -t 0; then
 225         # Don't prompt if invoked non-interactively.
 226         return 0
 227     fi
 228     cat <<EOF
 229
 230 WARNING!!!
 231
 232 Restarting vswitch on a live server is not guaranteed to work.  It is
 233 provided as a convenience for those situations in which it does work.
 234 If you just want to reload the configuration file, use "reload"
 235 instead of restart.
 236
 237 EOF
 238     read -s -r -n 1 -p "Countinue with restart (y/N): " response
 239     printf "\n"
 240     case "$response" in
 241         y|Y)
 242             return 0
 243             ;;
 244         *)
 245             return 1
 246             ;;
 247     esac
 248 }
 249
 250 function start {
 251     if [ "$FORCE_COREFILES" = "y" ]; then
 252         turn_on_corefiles
 253     fi
 254
 255     insert_modules_if_required
 256
 257     # Increase the limit on the number of open file descriptors since
 258     # ovs-vswitchd needs a few per bridge
 259     ulimit -n 4096
 260
 261     if [ ! -e "$VSWITCHD_CONF" ]; then
 262         warning "$VSWITCHD_CONF does not exist"
 263         action "Creating empty $VSWITCHD_CONF" touch "$VSWITCHD_CONF"
 264     elif [ ! -e /var/run/vswitch.booted ]; then
 265         touch /var/run/vswitch.booted
 266         /usr/bin/ovs-cfg-mod '-vANY:console:emer' -F "$VSWITCHD_CONF" \
 267             '--del-match=bridge.*' \
 268             '--del-match=port.*' \
 269             '--del-match=bonding.*' \
 270             '--del-match=iface.*' \
 271             '--del-match=vlan.*'
 272     fi
 273
 274     start_vswitchd
 275     start_brcompatd
 276     reload_vswitchd  # ensures ovs-vswitchd has fully read config file.
 277     touch /var/lock/subsys/vswitch
 278 }
 279
 280 function stop {
 281     stop_brcompatd
 282     stop_vswitchd
 283     rm -f /var/lock/subsys/vswitch
 284 }
 285
 286 function restart {
 287     if restart_approval; then
 288         stop
 289         start
 290     fi
 291 }
 292
 293 case "$1" in
 294     start)
 295         start
 296         ;;
 297     stop)
 298         stop
 299         ;;
 300     restart)
 301         restart
 302         ;;
 303     reload)
 304         reload_vswitchd
 305         reload_brcompatd
 306         ;;
 307     strace-vswitchd)
 308         shift
 309         strace -p $(cat "$VSWITCHD_PIDFILE") "$@"
 310         ;;
 311     strace-brcompatd)
 312         shift
 313         strace -p $(cat "$BRCOMPATD_PIDFILE") "$@"
 314         ;;
 315     status)
 316         status -p ovs-vswitchd.pid ovs-vswitchd
 317         status -p ovs-brcompatd.pid ovs-brcompatd
 318         ;;
 319     version)
 320         /usr/sbin/ovs-vswitchd -V
 321         /usr/sbin/ovs-brcompatd -V
 322         ;;
 323     help)
 324         printf "vswitch [start|stop|restart|reload|unload|status|version]\n"
 325         ;;
 326     *)
 327         printf "Unknown command: $1\n"
 328         exit 1
 329         ;;
 330 esac