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" \
 109             --target=ovs-vswitchd.$(cat "$VSWITCHD_PIDFILE").ctl \
 110             --execute=vswitchd/reload
 111     fi
 112 }
 113
 114 function reload_brcompatd {
 115     if [ -f "$BRCOMPATD_PIDFILE" ]; then
 116         "$appctl" \
 117             --target=ovs-brcompatd.$(cat "$BRCOMPATD_PIDFILE").ctl --reopen
 118     fi
 119 }
 120
 121 function start_vswitchd {
 122     local syslog_opt="-vANY:SYSLOG:${VSWITCHD_SYSLOG_LOGLEVEL}"
 123     local logfile_file_opt=""
 124     local logfile_level_opt=""
 125     if [ ! -d "$VSWITCHD_RUN_DIR" ]; then
 126         mkdir -p "$VSWITCHD_RUN_DIR"
 127     fi
 128     cd "$VSWITCHD_RUN_DIR"
 129     if [ -n "$VSWITCHD_FILE_LOGLEVEL" ]; then
 130         logfile_level_opt="-vANY:FILE:${VSWITCHD_FILE_LOGLEVEL}"
 131         logfile_file_opt="--log-file=$VSWITCHD_LOGFILE"
 132     fi
 133     local leak_opt=""
 134     if [ -n "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 135         leak_opt="--check-leaks=$VSWITCHD_MEMLEAK_LOGFILE"
 136         if [ -e "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 137             mv "$VSWITCHD_MEMLEAK_LOGFILE" "$VSWITCHD_MEMLEAK_LOGFILE.prev"
 138         fi
 139     fi
 140     local strace_opt=""
 141     local daemonize="y"
 142     if [ -n "$VSWITCHD_STRACE_LOG" ] && [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 143         printf "Can not start with both VALGRIND and STRACE\n"
 144         exit 1
 145     fi
 146     if [ -n "$VSWITCHD_STRACE_LOG" ]; then
 147         strace_opt="strace -o $VSWITCHD_STRACE_LOG $VSWITCHD_STRACE_OPT"
 148         daemonize="n"
 149     fi
 150     if [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 151         valgrind_opt="valgrind --log-file=$VSWITCHD_VALGRIND_LOG $VSWITCHD_VALGRIND_OPT"
 152         daemonize="n"
 153     fi
 154     local fake_proc_net_opt=""
 155     if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
 156         fake_proc_net_opt="--fake-proc-net"
 157     fi
 158     if [ "$daemonize" != "y" ]; then
 159         # Start in background and force a "success" message
 160         action "Starting ovs-vswitchd ($strace_opt$valgrind_opt)" true
 161         (nice -n "$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") &
 162     else
 163         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"
 164     fi
 165 }
 166
 167 function start_brcompatd {
 168     local syslog_opt="-vANY:SYSLOG:${BRCOMPATD_SYSLOG_LOGLEVEL}"
 169     local logfile_file_opt=""
 170     local logfile_level_opt=""
 171     if [ -d "$BRCOMPATD_RUN_DIR" ]; then
 172         mkdir -p "$BRCOMPATD_RUN_DIR"
 173     fi
 174     cd "$BRCOMPATD_RUN_DIR"
 175     if [ -n "$BRCOMPATD_FILE_LOGLEVEL" ]; then
 176         logfile_level_opt="-vANY:FILE:${BRCOMPATD_FILE_LOGLEVEL}"
 177         logfile_file_opt="--log-file=$BRCOMPATD_LOGFILE"
 178     fi
 179     local leak_opt=""
 180     if [ -n "$BRCOMPATD_MEMLEAK_LOG" ]; then
 181         leak_opt="--check-leaks=$BRCOMPATD_MEMLEAK_LOGFILE"
 182         if [ -e "$BRCOMPATD_MEMLEAK_LOGFILE" ]; then
 183             mv "$BRCOMPATD_MEMLEAK_LOGFILE" "$BRCOMPATD_MEMLEAK_LOGFILE.prev"
 184         fi
 185     fi
 186     local strace_opt=""
 187     local daemonize="y"
 188     if [ -n "$BRCOMPATD_STRACE_LOG" ] && [ -n "$BRCOMPATD_VALGRIND_LOG" ]; then
 189         printf "Can not start with both VALGRIND and STRACE\n"
 190         exit 1
 191     fi
 192     if [ -n "$BRCOMPATD_STRACE_LOG" ]; then
 193         strace_opt="strace -o $BRCOMPATD_STRACE_LOG $BRCOMPATD_STRACE_OPT"
 194         daemonize="n"
 195     fi
 196     if [ -n "$VALGRIND_LOG" ]; then
 197         valgrind_opt="valgrind --log-file=$BRCOMPATD_VALGRIND_LOG $BRCOMPATD_VALGRIND_OPT"
 198         daemonize="n"
 199     fi
 200     appctl_cmd="$appctl -t /var/run/ovs-vswitchd.\`cat $VSWITCHD_PIDFILE\`.ctl -e '%s'"
 201     if [ "$daemonize" != "y" ]; then
 202         # Start in background and force a "success" message
 203         action "Starting ovs-brcompatd ($strace_opt$valgrind_opt)" true
 204         (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") &
 205     else
 206         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"
 207     fi
 208 }
 209
 210 function stop_vswitchd {
 211     if [ -f "$VSWITCHD_PIDFILE" ]; then
 212         local pid=$(cat "$VSWITCHD_PIDFILE")
 213         action "Killing ovs-vswitchd ($pid)" kill -TERM $pid
 214         rm -f "$VSWITCHD_PIDFILE"
 215     fi
 216 }
 217
 218 function stop_brcompatd {
 219     if [ -f "$BRCOMPATD_PIDFILE" ]; then
 220         local pid=$(cat "$BRCOMPATD_PIDFILE")
 221         action "Killing ovs-brcompatd ($pid)" kill -TERM $pid
 222         rm -f "$BRCOMPATD_PIDFILE"
 223     fi
 224 }
 225
 226 function restart_approval {
 227     if test ! -t 0; then
 228         # Don't prompt if invoked non-interactively.
 229         return 0
 230     fi
 231     cat <<EOF
 232
 233 WARNING!!!
 234
 235 Restarting vswitch on a live server is not guaranteed to work.  It is
 236 provided as a convenience for those situations in which it does work.
 237 If you just want to reload the configuration file, use "reload"
 238 instead of restart.
 239
 240 EOF
 241     read -s -r -n 1 -p "Countinue with restart (y/N): " response
 242     printf "\n"
 243     case "$response" in
 244         y|Y)
 245             return 0
 246             ;;
 247         *)
 248             return 1
 249             ;;
 250     esac
 251 }
 252
 253 function start {
 254     if [ "$FORCE_COREFILES" = "y" ]; then
 255         turn_on_corefiles
 256     fi
 257
 258     insert_modules_if_required
 259
 260     # Increase the limit on the number of open file descriptors since
 261     # ovs-vswitchd needs a few per bridge
 262     ulimit -n 4096
 263
 264     if [ ! -e "$VSWITCHD_CONF" ]; then
 265         warning "$VSWITCHD_CONF does not exist"
 266         action "Creating empty $VSWITCHD_CONF" touch "$VSWITCHD_CONF"
 267     elif [ ! -e /var/run/vswitch.booted ]; then
 268         touch /var/run/vswitch.booted
 269         /usr/bin/ovs-cfg-mod '-vANY:console:emer' -F "$VSWITCHD_CONF" \
 270             '--del-match=bridge.*' \
 271             '--del-match=port.*' \
 272             '--del-match=bonding.*' \
 273             '--del-match=iface.*'
 274     fi
 275
 276     start_vswitchd
 277     start_brcompatd
 278     reload_vswitchd  # ensures ovs-vswitchd has fully read config file.
 279     touch /var/lock/subsys/vswitch
 280 }
 281
 282 function stop {
 283     stop_brcompatd
 284     stop_vswitchd
 285     rm -f /var/lock/subsys/vswitch
 286 }
 287
 288 function restart {
 289     if restart_approval; then
 290         stop
 291         start
 292     fi
 293 }
 294
 295 case "$1" in
 296     start)
 297         start
 298         ;;
 299     stop)
 300         stop
 301         ;;
 302     restart)
 303         restart
 304         ;;
 305     reload)
 306         reload_vswitchd
 307         reload_brcompatd
 308         ;;
 309     strace-vswitchd)
 310         shift
 311         strace -p $(cat "$VSWITCHD_PIDFILE") "$@"
 312         ;;
 313     strace-brcompatd)
 314         shift
 315         strace -p $(cat "$BRCOMPATD_PIDFILE") "$@"
 316         ;;
 317     status)
 318         status -p ovs-vswitchd.pid ovs-vswitchd
 319         status -p ovs-brcompatd.pid ovs-brcompatd
 320         ;;
 321     version)
 322         /usr/sbin/ovs-vswitchd -V
 323         /usr/sbin/ovs-brcompatd -V
 324         ;;
 325     help)
 326         printf "vswitch [start|stop|restart|reload|unload|status|version]\n"
 327         ;;
 328     *)
 329         printf "Unknown command: $1\n"
 330         exit 1
 331         ;;
 332 esac