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 VSWITCH_BASE="${VSWITCH_BASE:-/root/vswitch}"
  28 ENABLE_BRCOMPAT="${ENABLE_BRCOMPAT:-y}"
  29 ENABLE_FAKE_PROC_NET="${ENABLE_FAKE_PROC_NET:-y}"
  30 FORCE_COREFILES="${FORCE_COREFILES:-y}"
  31
  32 # Config variables specific to ovs-vswitchd
  33 VSWITCHD_CONF="${VSWITCHD_CONF:-/etc/ovs-vswitchd.conf}"
  34 VSWITCHD_PIDFILE="${VSWITCHD_PIDFILE:-/var/run/ovs-vswitchd.pid}"
  35 VSWITCHD_RUN_DIR="${VSWITCHD_RUN_DIR:-/var/xen/vswitch}"
  36 VSWITCHD_PRIORITY="${VSWITCHD_PRIORITY:--5}"
  37 VSWITCHD_LOGFILE="${VSWITCHD_LOGFILE:-/var/log/ovs-vswitchd.log}"
  38 VSWITCHD_FILE_LOGLEVEL="${VSWITCHD_FILE_LOGLEVEL:-}"
  39 VSWITCHD_SYSLOG_LOGLEVEL="${VSWITCHD_SYSLOG_LOGLEVEL:-WARN}"
  40 VSWITCHD_MEMLEAK_LOGFILE="${VSWITCHD_MEMLEAK_LOGFILE:-}"
  41 VSWITCHD_STRACE_LOG="${VSWITCHD_STRACE_LOG:-}"
  42 VSWITCHD_STRACE_OPT="${VSWITCHD_STRACE_OPT:-}"
  43 VSWITCHD_VALGRIND_LOG="${VSWITCHD_VALGRIND_LOG:-}"
  44 VSWITCHD_VALGRIND_OPT="${VSWITCHD_VALGRIND_OPT:-}"
  45
  46 # Config variables specific to ovs-brcompatd
  47 BRCOMPATD_PIDFILE="${BRCOMPATD_PIDFILE:-/var/run/ovs-brcompatd.pid}"
  48 BRCOMPATD_RUN_DIR="${BRCOMPATD_RUN_DIR:-/var/xen/vswitch}"
  49 BRCOMPATD_PRIORITY="${BRCOMPATD_PRIORITY:--5}"
  50 BRCOMPATD_LOGFILE="${BRCOMPATD_LOGFILE:-/var/log/ovs-brcompatd.log}"
  51 BRCOMPATD_FILE_LOGLEVEL="${BRCOMPATD_FILE_LOGLEVEL:-}"
  52 BRCOMPATD_SYSLOG_LOGLEVEL="${BRCOMPATD_SYSLOG_LOGLEVEL:-INFO}"
  53 BRCOMPATD_MEMLEAK_LOGFILE="${BRCOMPATD_MEMLEAK_LOGFILE:-}"
  54 BRCOMPATD_STRACE_LOG="${BRCOMPATD_STRACE_LOG:-}"
  55 BRCOMPATD_STRACE_OPT="${BRCOMPATD_STRACE_OPT:-}"
  56 BRCOMPATD_VALGRIND_LOG="${BRCOMPATD_VALGRIND_LOG:-}"
  57 BRCOMPATD_VALGRIND_OPT="${BRCOMPATD_VALGRIND_OPT:-}"
  58
  59
  60
  61
  62 # Full paths to executables & modules
  63 vswitchd="$VSWITCH_BASE/sbin/ovs-vswitchd"
  64 brcompatd="$VSWITCH_BASE/sbin/ovs-brcompatd"
  65 dpctl="$VSWITCH_BASE/bin/ovs-dpctl"
  66 appctl="$VSWITCH_BASE/bin/ovs-appctl"
  67 ofctl="$VSWITCH_BASE/bin/ovs-ofctl"
  68
  69
  70 if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
  71     if [ "$ENABLE_BRCOMPAT" != "y" ]; then
  72         warning "FAKE_PROC_NET required BRCOMPAT which was disabled.  Force enabling."
  73         ENABLE_BRCOMPAT="y"
  74     fi
  75 fi
  76
  77 function dp_list {
  78     "$dpctl" show | grep '^dp[0-9]\+:' | cut -d':' -f 1
  79 }
  80
  81 function turn_on_corefiles {
  82     ulimit -Sc 67108864
  83 }
  84
  85 function remove_all_dp {
  86     for dp in $(dp_list); do
  87         action "Removing datapath: $dp" "$dpctl" del-dp "$dp"
  88     done
  89 }
  90
  91 function insert_modules_if_required {
  92     if ! lsmod | grep -q "openvswitch_mod"; then
  93         action "Inserting llc module" modprobe llc
  94         action "Inserting openvswitch module" insmod $VSWITCH_BASE/kernel_modules/openvswitch_mod.ko
  95     fi
  96     if [ -n "$BRCOMPATD_PIDFILE" ] && ! lsmod | grep -q "brcompat_mod"; then
  97         action "Inserting brcompat module" insmod $VSWITCH_BASE/kernel_modules/brcompat_mod.ko
  98     fi
  99 }
 100
 101 function remove_modules {
 102     if lsmod | grep -q "brcompat_mod"; then
 103         action "Removing brcompat module" rmmod brcompat_mod.ko
 104     fi
 105     if lsmod | grep -q "openvswitch_mod"; then
 106         action "Removing openvswitch module" rmmod openvswitch_mod.ko
 107     fi
 108 }
 109
 110 function reload_vswitchd {
 111     if [ -f "$VSWITCHD_PIDFILE" ]; then
 112         "$appctl" \
 113             --target=ovs-vswitchd.$(cat "$VSWITCHD_PIDFILE").ctl \
 114             --execute=vswitchd/reload
 115     fi
 116 }
 117
 118 function start_vswitchd {
 119     local syslog_opt="-vANY:SYSLOG:${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 -t /var/run/ovs-vswitchd.\`cat $VSWITCHD_PIDFILE\`.ctl -e '%s'"
 198     if [ "$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     start_vswitchd
 262     start_brcompatd
 263     reload_vswitchd  # ensures ovs-vswitchd has fully read config file.
 264 }
 265
 266 function stop {
 267     stop_brcompatd
 268     stop_vswitchd
 269 }
 270
 271 function restart {
 272     if restart_approval; then
 273         stop
 274         start
 275     fi
 276 }
 277
 278 case "$1" in
 279     start)
 280         start
 281         ;;
 282     stop)
 283         stop
 284         ;;
 285     restart)
 286         restart
 287         ;;
 288     reload)
 289         reload_vswitchd
 290         ;;
 291     strace-vswitchd)
 292         shift
 293         strace -p $(cat "$VSWITCHD_PIDFILE") "$@"
 294         ;;
 295     strace-brcompatd)
 296         shift
 297         strace -p $(cat "$BRCOMPATD_PIDFILE") "$@"
 298         ;;
 299     status)
 300         status -p ovs-vswitchd.pid ovs-vswitchd
 301         status -p ovs-brcompatd.pid ovs-brcompatd
 302         ;;
 303     version)
 304         "$VSWITCH_BASE"/sbin/ovs-vswitchd -V
 305         "$VSWITCH_BASE"/sbin/ovs-brcompatd -V
 306         ;;
 307     help)
 308         printf "vswitch [start|stop|restart|reload|unload|status|version]\n"
 309         ;;
 310     *)
 311         printf "Unknown command: $1\n"
 312         exit 1
 313         ;;
 314 esac