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, 2010 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 ovsdb-server
  32 : ${OVSDB_SERVER_REMOTES:=punix:/var/run/ovsdb-server db:Open_vSwitch,managers}
  33 : ${OVSDB_SERVER_DB:=/etc/ovs-vswitchd.conf.db}
  34 : ${OVSDB_SERVER_PIDFILE:=/var/run/ovsdb-server.pid}
  35 : ${OVSDB_SERVER_RUN_DIR:=/var/xen/vswitch}
  36 : ${OVSDB_SERVER_PRIORITY:=-10}
  37 : ${OVSDB_SERVER_LOGFILE:=/var/log/ovsdb-server.log}
  38 : ${OVSDB_SERVER_FILE_LOGLEVEL:=INFO}
  39 : ${OVSDB_SERVER_SYSLOG_LOGLEVEL:=ERR}
  40 : ${OVSDB_SERVER_MEMLEAK_LOGFILE:=}
  41 : ${OVSDB_SERVER_STRACE_LOG:=}
  42 : ${OVSDB_SERVER_STRACE_OPT:=}
  43 : ${OVSDB_SERVER_VALGRIND_LOG:=}
  44 : ${OVSDB_SERVER_VALGRIND_OPT:=}
  45
  46 # Config variables specific to ovs-vswitchd
  47 : ${VSWITCHD_OVSDB_SERVER:=unix:/var/run/ovsdb-server}
  48 : ${VSWITCHD_OVSDB_SCHEMA:=/usr/share/vswitch/vswitch-idl.ovsschema}
  49 : ${VSWITCHD_PIDFILE:=/var/run/ovs-vswitchd.pid}
  50 : ${VSWITCHD_RUN_DIR:=/var/xen/vswitch}
  51 : ${VSWITCHD_PRIORITY:=-10}
  52 : ${VSWITCHD_LOGFILE:=/var/log/ovs-vswitchd.log}
  53 : ${VSWITCHD_FILE_LOGLEVEL:=INFO}
  54 : ${VSWITCHD_SYSLOG_LOGLEVEL:=ERR}
  55 : ${VSWITCHD_MEMLEAK_LOGFILE:=}
  56 : ${VSWITCHD_STRACE_LOG:=}
  57 : ${VSWITCHD_STRACE_OPT:=}
  58 : ${VSWITCHD_VALGRIND_LOG:=}
  59 : ${VSWITCHD_VALGRIND_OPT:=}
  60
  61 # Config variables specific to ovs-brcompatd
  62 : ${BRCOMPATD_PIDFILE:=/var/run/ovs-brcompatd.pid}
  63 : ${BRCOMPATD_RUN_DIR:=/var/xen/vswitch}
  64 : ${BRCOMPATD_PRIORITY:=-10}
  65 : ${BRCOMPATD_LOGFILE:=/var/log/ovs-brcompatd.log}
  66 : ${BRCOMPATD_FILE_LOGLEVEL:=INFO}
  67 : ${BRCOMPATD_SYSLOG_LOGLEVEL:=ERR}
  68 : ${BRCOMPATD_MEMLEAK_LOGFILE:=}
  69 : ${BRCOMPATD_STRACE_LOG:=}
  70 : ${BRCOMPATD_STRACE_OPT:=}
  71 : ${BRCOMPATD_VALGRIND_LOG:=}
  72 : ${BRCOMPATD_VALGRIND_OPT:=}
  73
  74 # Full paths to executables & modules
  75 ovsdb_server="/usr/sbin/ovsdb-server"
  76 ovsdb_tool="/usr/bin/ovsdb-tool"
  77 vswitchd="/usr/sbin/ovs-vswitchd"
  78 brcompatd="/usr/sbin/ovs-brcompatd"
  79 dpctl="/usr/bin/ovs-dpctl"
  80 appctl="/usr/bin/ovs-appctl"
  81 ofctl="/usr/bin/ovs-ofctl"
  82 vsctl="/usr/bin/ovs-vsctl"
  83
  84
  85 if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
  86     if [ "$ENABLE_BRCOMPAT" != "y" ]; then
  87         warning "FAKE_PROC_NET required BRCOMPAT which was disabled.  Force enabling."
  88         ENABLE_BRCOMPAT="y"
  89     fi
  90 fi
  91
  92 function dp_list {
  93     "$dpctl" show | grep '^dp[0-9]\+:' | cut -d':' -f 1
  94 }
  95
  96 function turn_on_corefiles {
  97     ulimit -Sc 67108864
  98 }
  99
 100 function remove_all_dp {
 101     for dp in $(dp_list); do
 102         action "Removing datapath: $dp" "$dpctl" del-dp "$dp"
 103     done
 104 }
 105
 106 function insert_modules_if_required {
 107     if ! lsmod | grep -q "openvswitch_mod"; then
 108         action "Inserting llc module" modprobe llc
 109         action "Inserting openvswitch module" modprobe openvswitch_mod
 110     fi
 111     if [ -n "$BRCOMPATD_PIDFILE" ] && ! lsmod | grep -q "brcompat_mod"; then
 112         action "Inserting brcompat module" modprobe brcompat_mod
 113     fi
 114     if [ -f "/lib/modules/`uname -r`/kernel/net/vswitch/ip_gre_mod.ko" ] && ! lsmod | grep -q "ip_gre_mod"; then
 115         action "Inserting ip_gre module" modprobe ip_gre_mod
 116     fi
 117 }
 118
 119 function remove_modules {
 120     if lsmod | grep -q "brcompat_mod"; then
 121         action "Removing brcompat module" rmmod brcompat_mod.ko
 122     fi
 123     if lsmod | grep -q "openvswitch_mod"; then
 124         action "Removing openvswitch module" rmmod openvswitch_mod.ko
 125     fi
 126     if lsmod | grep -q "ip_gre_mod"; then
 127         action "Removing ip_gre module" rmmod ip_gre_mod.ko
 128     fi
 129 }
 130
 131 function start_ovsdb_server {
 132     local syslog_opt="-vANY:SYSLOG:${OVSDB_SERVER_SYSLOG_LOGLEVEL}"
 133     local logfile_file_opt=""
 134     local logfile_level_opt=""
 135     if [ ! -d "$OVSDB_SERVER_RUN_DIR" ]; then
 136         mkdir -p "$OVSDB_SERVER_RUN_DIR"
 137     fi
 138     cd "$OVSDB_SERVER_RUN_DIR"
 139     local remotes=
 140     for remote in $OVSDB_SERVER_REMOTES; do
 141         remotes="$remotes --remote=$remote"
 142     done
 143     if [ -n "$OVSDB_SERVER_FILE_LOGLEVEL" ]; then
 144         logfile_level_opt="-vANY:FILE:${OVSDB_SERVER_FILE_LOGLEVEL}"
 145         logfile_file_opt="--log-file=$OVSDB_SERVER_LOGFILE"
 146     fi
 147     local leak_opt=""
 148     if [ -n "$OVSDB_SERVER_MEMLEAK_LOGFILE" ]; then
 149         leak_opt="--check-leaks=$OVSDB_SERVER_MEMLEAK_LOGFILE"
 150         if [ -e "$OVSDB_SERVER_MEMLEAK_LOGFILE" ]; then
 151             mv "$OVSDB_SERVER_MEMLEAK_LOGFILE" "$OVSDB_SERVER_MEMLEAK_LOGFILE.prev"
 152         fi
 153     fi
 154     local strace_opt=""
 155     local daemonize="y"
 156     if [ -n "$OVSDB_SERVER_STRACE_LOG" ] && [ -n "$OVSDB_SERVER_VALGRIND_LOG" ]; then
 157         printf "Can not start with both VALGRIND and STRACE\n"
 158         exit 1
 159     fi
 160     if [ -n "$OVSDB_SERVER_STRACE_LOG" ]; then
 161         strace_opt="strace -o $OVSDB_SERVER_STRACE_LOG $OVSDB_SERVER_STRACE_OPT"
 162         daemonize="n"
 163     fi
 164     if [ -n "$OVSDB_SERVER_VALGRIND_LOG" ]; then
 165         valgrind_opt="valgrind --log-file=$OVSDB_SERVER_VALGRIND_LOG $OVSDB_SERVER_VALGRIND_OPT"
 166         daemonize="n"
 167     fi
 168     if [ "$daemonize" != "y" ]; then
 169         # Start in background and force a "success" message
 170         action "Starting ovsdb_server ($strace_opt$valgrind_opt)" true
 171         (nice -n "$OVSDB_SERVER_PRIORITY" $strace_opt $valgrind_opt "$ovsdb_server" "$OVSDB_SERVER_DB" --pidfile="$OVSDB_SERVER_PIDFILE" --detach --no-chdir -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt $remotes) &
 172     else
 173         action "Starting ovsdb-server" nice -n "$OVSDB_SERVER_PRIORITY" "$ovsdb_server" "$OVSDB_SERVER_DB" --pidfile="$OVSDB_SERVER_PIDFILE" --detach --no-chdir -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt $remotes
 174     fi
 175 }
 176
 177 function start_vswitchd {
 178     local syslog_opt="-vANY:SYSLOG:${VSWITCHD_SYSLOG_LOGLEVEL}"
 179     local logfile_file_opt=""
 180     local logfile_level_opt=""
 181     if [ ! -d "$VSWITCHD_RUN_DIR" ]; then
 182         mkdir -p "$VSWITCHD_RUN_DIR"
 183     fi
 184     cd "$VSWITCHD_RUN_DIR"
 185     if [ -n "$VSWITCHD_FILE_LOGLEVEL" ]; then
 186         logfile_level_opt="-vANY:FILE:${VSWITCHD_FILE_LOGLEVEL}"
 187         logfile_file_opt="--log-file=$VSWITCHD_LOGFILE"
 188     fi
 189     local leak_opt=""
 190     if [ -n "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 191         leak_opt="--check-leaks=$VSWITCHD_MEMLEAK_LOGFILE"
 192         if [ -e "$VSWITCHD_MEMLEAK_LOGFILE" ]; then
 193             mv "$VSWITCHD_MEMLEAK_LOGFILE" "$VSWITCHD_MEMLEAK_LOGFILE.prev"
 194         fi
 195     fi
 196     local strace_opt=""
 197     local daemonize="y"
 198     if [ -n "$VSWITCHD_STRACE_LOG" ] && [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 199         printf "Can not start with both VALGRIND and STRACE\n"
 200         exit 1
 201     fi
 202     if [ -n "$VSWITCHD_STRACE_LOG" ]; then
 203         strace_opt="strace -o $VSWITCHD_STRACE_LOG $VSWITCHD_STRACE_OPT"
 204         daemonize="n"
 205     fi
 206     if [ -n "$VSWITCHD_VALGRIND_LOG" ]; then
 207         valgrind_opt="valgrind --log-file=$VSWITCHD_VALGRIND_LOG $VSWITCHD_VALGRIND_OPT"
 208         daemonize="n"
 209     fi
 210     local fake_proc_net_opt=""
 211     if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
 212         fake_proc_net_opt="--fake-proc-net"
 213     fi
 214     if [ "$daemonize" != "y" ]; then
 215         # Start in background and force a "success" message
 216         action "Starting ovs-vswitchd ($strace_opt$valgrind_opt)" true
 217         (nice -n "$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_OVSDB_SERVER") &
 218     else
 219         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_OVSDB_SERVER"
 220     fi
 221 }
 222
 223 function start_brcompatd {
 224     local syslog_opt="-vANY:SYSLOG:${BRCOMPATD_SYSLOG_LOGLEVEL}"
 225     local logfile_file_opt=""
 226     local logfile_level_opt=""
 227     if [ -d "$BRCOMPATD_RUN_DIR" ]; then
 228         mkdir -p "$BRCOMPATD_RUN_DIR"
 229     fi
 230     cd "$BRCOMPATD_RUN_DIR"
 231     if [ -n "$BRCOMPATD_FILE_LOGLEVEL" ]; then
 232         logfile_level_opt="-vANY:FILE:${BRCOMPATD_FILE_LOGLEVEL}"
 233         logfile_file_opt="--log-file=$BRCOMPATD_LOGFILE"
 234     fi
 235     local leak_opt=""
 236     if [ -n "$BRCOMPATD_MEMLEAK_LOGFILE" ]; then
 237         leak_opt="--check-leaks=$BRCOMPATD_MEMLEAK_LOGFILE"
 238         if [ -e "$BRCOMPATD_MEMLEAK_LOGFILE" ]; then
 239             mv "$BRCOMPATD_MEMLEAK_LOGFILE" "$BRCOMPATD_MEMLEAK_LOGFILE.prev"
 240         fi
 241     fi
 242     local strace_opt=""
 243     local daemonize="y"
 244     if [ -n "$BRCOMPATD_STRACE_LOG" ] && [ -n "$BRCOMPATD_VALGRIND_LOG" ]; then
 245         printf "Can not start with both VALGRIND and STRACE\n"
 246         exit 1
 247     fi
 248     if [ -n "$BRCOMPATD_STRACE_LOG" ]; then
 249         strace_opt="strace -o $BRCOMPATD_STRACE_LOG $BRCOMPATD_STRACE_OPT"
 250         daemonize="n"
 251     fi
 252     if [ -n "$VALGRIND_LOG" ]; then
 253         valgrind_opt="valgrind --log-file=$BRCOMPATD_VALGRIND_LOG $BRCOMPATD_VALGRIND_OPT"
 254         daemonize="n"
 255     fi
 256     appctl_cmd="$appctl --target=/var/run/ovs-vswitchd.\`cat $VSWITCHD_PIDFILE\`.ctl %s"
 257     if [ "$daemonize" != "y" ]; then
 258         # Start in background and force a "success" message
 259         action "Starting ovs-brcompatd ($strace_opt$valgrind_opt)" true
 260         (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_OVSDB_SERVER") &
 261     else
 262         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_OVSDB_SERVER"
 263     fi
 264 }
 265
 266 function stop_ovsdb_server {
 267     if [ -f "$OVSDB_SERVER_PIDFILE" ]; then
 268         local pid=$(cat "$OVSDB_SERVER_PIDFILE")
 269         action "Killing ovsdb-server ($pid)" kill -TERM $pid
 270         rm -f "$OVSDB_SERVER_PIDFILE"
 271     fi
 272 }
 273
 274 function stop_vswitchd {
 275     if [ -f "$VSWITCHD_PIDFILE" ]; then
 276         local pid=$(cat "$VSWITCHD_PIDFILE")
 277         action "Killing ovs-vswitchd ($pid)" kill -TERM $pid
 278         rm -f "$VSWITCHD_PIDFILE"
 279     fi
 280 }
 281
 282 function stop_brcompatd {
 283     if [ -f "$BRCOMPATD_PIDFILE" ]; then
 284         local pid=$(cat "$BRCOMPATD_PIDFILE")
 285         action "Killing ovs-brcompatd ($pid)" kill -TERM $pid
 286         rm -f "$BRCOMPATD_PIDFILE"
 287     fi
 288 }
 289
 290 function restart_approval {
 291     if test ! -t 0; then
 292         # Don't prompt if invoked non-interactively.
 293         return 0
 294     fi
 295     cat <<EOF
 296
 297 WARNING!!!
 298
 299 Restarting vswitch on a live server is not guaranteed to work.  It is
 300 provided as a convenience for those situations in which it does work.
 301
 302 EOF
 303     read -s -r -n 1 -p "Countinue with restart (y/N): " response
 304     printf "\n"
 305     case "$response" in
 306         y|Y)
 307             return 0
 308             ;;
 309         *)
 310             return 1
 311             ;;
 312     esac
 313 }
 314
 315 function start {
 316     if [ "$FORCE_COREFILES" = "y" ]; then
 317         turn_on_corefiles
 318     fi
 319
 320     insert_modules_if_required
 321
 322     # Increase the limit on the number of open file descriptors since
 323     # ovs-vswitchd needs a few per bridge
 324     ulimit -n 4096
 325
 326     # Allow GRE traffic.
 327     iptables -I INPUT -p gre -j ACCEPT
 328
 329     if [ ! -e "$OVSDB_SERVER_DB" ]; then
 330         warning "$OVSDB_SERVER_DB does not exist"
 331
 332         action "Creating empty database $OVSDB_SERVER_DB" true
 333         $ovsdb_tool -vANY:console:emer create "$OVSDB_SERVER_DB" "$VSWITCHD_OVSDB_SCHEMA"
 334     fi
 335
 336     start_ovsdb_server
 337     $vsctl --no-wait init
 338     if [ ! -e /var/run/vswitch.booted ]; then
 339         touch /var/run/vswitch.booted
 340         for bridge in $($vsctl list-br); do
 341             $vsctl --no-wait del-br $bridge
 342         done
 343     fi
 344
 345     start_vswitchd
 346     start_brcompatd
 347     touch /var/lock/subsys/vswitch
 348 }
 349
 350 function stop {
 351     stop_brcompatd
 352     stop_vswitchd
 353     stop_ovsdb_server
 354     rm -f /var/lock/subsys/vswitch
 355 }
 356
 357 function restart {
 358     if restart_approval; then
 359         stop
 360         start
 361     fi
 362 }
 363
 364 case "$1" in
 365     start)
 366         start
 367         ;;
 368     stop)
 369         stop
 370         ;;
 371     restart)
 372         restart
 373         ;;
 374     strace-vswitchd)
 375         shift
 376         strace -p $(cat "$VSWITCHD_PIDFILE") "$@"
 377         ;;
 378     strace-brcompatd)
 379         shift
 380         strace -p $(cat "$BRCOMPATD_PIDFILE") "$@"
 381         ;;
 382     status)
 383         status -p ovsdb-server.pid ovsdb-server
 384         status -p ovs-vswitchd.pid ovs-vswitchd
 385         status -p ovs-brcompatd.pid ovs-brcompatd
 386         ;;
 387     version)
 388         /usr/sbin/ovsdb-server -V
 389         /usr/sbin/ovs-vswitchd -V
 390         /usr/sbin/ovs-brcompatd -V
 391         ;;
 392     help)
 393         printf "vswitch [start|stop|restart|unload|status|version]\n"
 394         ;;
 395     *)
 396         printf "Unknown command: $1\n"
 397         exit 1
 398         ;;
 399 esac