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:--10}"
  37 VSWITCHD_LOGFILE="${VSWITCHD_LOGFILE:-/var/log/ovs-vswitchd.log}"
  38 VSWITCHD_FILE_LOGLEVEL="${VSWITCHD_FILE_LOGLEVEL:-INFO}"
  39 VSWITCHD_SYSLOG_LOGLEVEL="${VSWITCHD_SYSLOG_LOGLEVEL:-ERR}"
  40 VSWITCHD_MEMLEAK_LOGFILE="${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="${BRCOMPATD_PRIORITY:--10}"
  50 BRCOMPATD_LOGFILE="${BRCOMPATD_LOGFILE:-/var/log/ovs-brcompatd.log}"
  51 BRCOMPATD_FILE_LOGLEVEL="${BRCOMPATD_FILE_LOGLEVEL:-INFO}"
  52 BRCOMPATD_SYSLOG_LOGLEVEL="${BRCOMPATD_SYSLOG_LOGLEVEL:-ERR}"
  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 "$VSWITCHD_PIDFILE").ctl \
 114             --execute=vswitchd/reload
 115     fi
 116 }
 117
 118 function reload_brcompatd {
 119     if [ -f "$BRCOMPATD_PIDFILE" ]; then
 120         "$appctl" \
 121             --target=ovs-brcompatd.$(cat "$BRCOMPATD_PIDFILE").ctl --reopen
 122     fi
 123 }
 124
 125 function start_vswitchd {
 126     local syslog_opt="-vANY:SYSLOG:${VSWITCHD_SYSLOG_LOGLEVEL}"
 127     local logfile_file_opt=""
 128     local logfile_level_opt=""
 129     if [ ! -d "$VSWITCHD_RUN_DIR" ]; then
 130         mkdir -p "$VSWITCHD_RUN_DIR"
 131     fi
 132     cd "$VSWITCHD_RUN_DIR"
 133     if [ -n "$VSWITCHD_FILE_LOGLEVEL" ]; then
 134         logfile_level_opt="-vANY:FILE:${VSWITCHD_FILE_LOGLEVEL}"
 135         logfile_file_opt="--log-file=$VSWITCHD_LOGFILE"
 136     fi
 137     local leak_opt=""
 138     if [ -n "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 139         leak_opt="--check-leaks=$VSWITCHD_MEMLEAK_LOGFILE"
 140         if [ -e "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 141             mv "$VSWITCHD_MEMLEAK_LOGFILE" "$VSWITCHD_MEMLEAK_LOGFILE.prev"
 142         fi
 143     fi
 144     local strace_opt=""
 145     local daemonize="y"
 146     if [ -n "$VSWITCHD_STRACE_LOG" ] && [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 147         printf "Can not start with both VALGRIND and STRACE\n"
 148         exit 1
 149     fi
 150     if [ -n "$VSWITCHD_STRACE_LOG" ]; then
 151         strace_opt="strace -o $VSWITCHD_STRACE_LOG $VSWITCHD_STRACE_OPT"
 152         daemonize="n"
 153     fi
 154     if [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 155         valgrind_opt="valgrind --log-file=$VSWITCHD_VALGRIND_LOG $VSWITCHD_VALGRIND_OPT"
 156         daemonize="n"
 157     fi
 158     local fake_proc_net_opt=""
 159     if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
 160         fake_proc_net_opt="--fake-proc-net"
 161     fi
 162     if [ "$daemonize" != "y" ]; then
 163         # Start in background and force a "success" message
 164         action "Starting ovs-vswitchd ($strace_opt$valgrind_opt)" true
 165         (nice -n "$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") &
 166     else
 167         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"
 168     fi
 169 }
 170
 171 function start_brcompatd {
 172     local syslog_opt="-vANY:SYSLOG:${BRCOMPATD_SYSLOG_LOGLEVEL}"
 173     local logfile_file_opt=""
 174     local logfile_level_opt=""
 175     if [ -d "$BRCOMPATD_RUN_DIR" ]; then
 176         mkdir -p "$BRCOMPATD_RUN_DIR"
 177     fi
 178     cd "$BRCOMPATD_RUN_DIR"
 179     if [ -n "$BRCOMPATD_FILE_LOGLEVEL" ]; then
 180         logfile_level_opt="-vANY:FILE:${BRCOMPATD_FILE_LOGLEVEL}"
 181         logfile_file_opt="--log-file=$BRCOMPATD_LOGFILE"
 182     fi
 183     local leak_opt=""
 184     if [ -n "$BRCOMPATD_MEMLEAK_LOG" ]; then
 185         leak_opt="--check-leaks=$BRCOMPATD_MEMLEAK_LOGFILE"
 186         if [ -e "$BRCOMPATD_MEMLEAK_LOGFILE" ]; then
 187             mv "$BRCOMPATD_MEMLEAK_LOGFILE" "$BRCOMPATD_MEMLEAK_LOGFILE.prev"
 188         fi
 189     fi
 190     local strace_opt=""
 191     local daemonize="y"
 192     if [ -n "$BRCOMPATD_STRACE_LOG" ] && [ -n "$BRCOMPATD_VALGRIND_LOG" ]; then
 193         printf "Can not start with both VALGRIND and STRACE\n"
 194         exit 1
 195     fi
 196     if [ -n "$BRCOMPATD_STRACE_LOG" ]; then
 197         strace_opt="strace -o $BRCOMPATD_STRACE_LOG $BRCOMPATD_STRACE_OPT"
 198         daemonize="n"
 199     fi
 200     if [ -n "$VALGRIND_LOG" ]; then
 201         valgrind_opt="valgrind --log-file=$BRCOMPATD_VALGRIND_LOG $BRCOMPATD_VALGRIND_OPT"
 202         daemonize="n"
 203     fi
 204     appctl_cmd="$appctl -t /var/run/ovs-vswitchd.\`cat $VSWITCHD_PIDFILE\`.ctl -e '%s'"
 205     if [ "$daemonize" != "y" ]; then
 206         # Start in background and force a "success" message
 207         action "Starting ovs-brcompatd ($strace_opt$valgrind_opt)" true
 208         (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") &
 209     else
 210         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"
 211     fi
 212 }
 213
 214 function stop_vswitchd {
 215     if [ -f "$VSWITCHD_PIDFILE" ]; then
 216         local pid=$(cat "$VSWITCHD_PIDFILE")
 217         action "Killing ovs-vswitchd ($pid)" kill -TERM $pid
 218         rm -f "$VSWITCHD_PIDFILE"
 219     fi
 220 }
 221
 222 function stop_brcompatd {
 223     if [ -f "$BRCOMPATD_PIDFILE" ]; then
 224         local pid=$(cat "$BRCOMPATD_PIDFILE")
 225         action "Killing ovs-brcompatd ($pid)" kill -TERM $pid
 226         rm -f "$BRCOMPATD_PIDFILE"
 227     fi
 228 }
 229
 230 function restart_approval {
 231     if test ! -t 0; then
 232         # Don't prompt if invoked non-interactively.
 233         return 0
 234     fi
 235     cat <<EOF
 236
 237 WARNING!!!
 238
 239 Restarting vswitch on a live server is not guaranteed to work.  It is
 240 provided as a convenience for those situations in which it does work.
 241 If you just want to reload the configuration file, use "reload"
 242 instead of restart.
 243
 244 EOF
 245     read -s -r -n 1 -p "Countinue with restart (y/N): " response
 246     printf "\n"
 247     case "$response" in
 248         y|Y)
 249             return 0
 250             ;;
 251         *)
 252             return 1
 253             ;;
 254     esac
 255 }
 256
 257 function start {
 258     if [ "$FORCE_COREFILES" = "y" ]; then
 259         turn_on_corefiles
 260     fi
 261
 262     insert_modules_if_required
 263
 264     # Increase the limit on the number of open file descriptors since
 265     # ovs-vswitchd needs a few per bridge
 266     ulimit -n 4096
 267
 268     if [ ! -e "$VSWITCHD_CONF" ]; then
 269         warning "$VSWITCHD_CONF does not exist"
 270         action "Creating empty $VSWITCHD_CONF" touch "$VSWITCHD_CONF"
 271     elif [ ! -e /var/run/vswitch.booted ]; then
 272         touch /var/run/vswitch.booted
 273         /usr/bin/ovs-cfg-mod '-vANY:console:emer' -F "$VSWITCHD_CONF" \
 274             '--del-match=bridge.*' \
 275             '--del-match=port.*' \
 276             '--del-match=bonding.*' \
 277             '--del-match=iface.*' \
 278             '--del-match=vlan.*.trunks=*' \
 279             '--del-match=vlan.*.tag=*'
 280     fi
 281
 282     start_vswitchd
 283     start_brcompatd
 284     reload_vswitchd  # ensures ovs-vswitchd has fully read config file.
 285 }
 286
 287 function stop {
 288     stop_brcompatd
 289     stop_vswitchd
 290 }
 291
 292 function restart {
 293     if restart_approval; then
 294         stop
 295         start
 296     fi
 297 }
 298
 299 case "$1" in
 300     start)
 301         start
 302         ;;
 303     stop)
 304         stop
 305         ;;
 306     restart)
 307         restart
 308         ;;
 309     reload)
 310         reload_vswitchd
 311         reload_brcompatd
 312         ;;
 313     strace-vswitchd)
 314         shift
 315         strace -p $(cat "$VSWITCHD_PIDFILE") "$@"
 316         ;;
 317     strace-brcompatd)
 318         shift
 319         strace -p $(cat "$BRCOMPATD_PIDFILE") "$@"
 320         ;;
 321     status)
 322         status -p ovs-vswitchd.pid ovs-vswitchd
 323         status -p ovs-brcompatd.pid ovs-brcompatd
 324         ;;
 325     version)
 326         "$VSWITCH_BASE"/sbin/ovs-vswitchd -V
 327         "$VSWITCH_BASE"/sbin/ovs-brcompatd -V
 328         ;;
 329     help)
 330         printf "vswitch [start|stop|restart|reload|unload|status|version]\n"
 331         ;;
 332     *)
 333         printf "Unknown command: $1\n"
 334         exit 1
 335         ;;
 336 esac